Internal Combustion engine with recessed intake manifold

Claim 2

An internal combustion engine comprising an engine member including an intake manifold mounting face having therein a series of openings, an intake manifold including an engine mounting surface on said manifold mounting face, a carburetor mounting surface in spaced relation to said engine mounting surface, a like series of intake passages extending between said mounting surfaces, terminating at said engine mounting surface in respective openings respectively located in alignment with said openings in said manifold mounting face, and terminating at said carburetor mounting surface in respective openings, and drains re-circulation means for delivering drains accumulating in said intake passages to intake passages other than said intake passages in which the drains accumulated, and a like series of carburetors on said carburetor mounting surface, said carburetors respectively including air induction passages communicating respectively with said openings in said carburetor mounting surface.

Claim 3

An internal combustion engine in accordance with claim 1 wherein said drains re-circulation means comprises a like series of drain ducts located in said engine mounting surface and respectively communicating with said openings in said engine mounting surface for draining drains from said intake passages, a like series of drain ducts located in said carburetor mounting surface and respectively communicating with said openings in said carburetor mounting surface for delivering drains to said intake passages, and a like series of cross bores extending between said mounting surfaces and respectively communicating with said drain ducts in said mounting surfaces.

Claim 4

An internal combustion engine in accordance with claim 1 and further including means securing said carburetors to said engine member with said intake manifold captured between said engine member and said carburetors and including fasteners extending through said intake manifold and into said engine member.

Claim 5

An internal combustion engine in accordance with claim 1 wherein said intake manifold is fabricated of composite material.

Claim 6

An internal combustion engine comprising an engine member including an intake manifold mounting face having therein an opening, an intake manifold including an exterior surface comprising an engine mounting surface on said manifold mounting face, and a carburetor mounting surface in spaced relation to said engine mounting surface, an intake passage extending between said mounting surfaces, terminating at said engine mounting surface in an opening located in alignment with said opening in said manifold mounting face, and terminating at said carburetor mounting surface in an opening, and means for supplying primer fuel to said intake passage and comprising a primer fuel duct located in one of said mounting surfaces, and a carburetor located on said carburetor mounting surface and including an air induction passage communicating with said opening in said carburetor mounting surface.

Claim 7

An internal combustion engine comprising an engine member including an intake manifold mounting face having therein an opening, an intake manifold including an exterior surface comprising an engine mounting surface on said manifold mounting face, and a carburetor mounting surface in spaced relation to said engine mounting surface, an intake passage extending between said mounting surfaces, terminating at said engine mounting surface in an opening located in alignment with said opening in said manifold mounting face, and terminating at said carburetor mounting surface in an opening, and means for supplying primer fuel to said intake passage and comprising a primer fuel duct located in one of said mounting surfaces, and a carburetor located on said carburetor mounting surface and including an air induction passage communicating with said opening in said carburetor mounting surface.

Claim 8

An internal combustion engine in accordance with claim 5 wherein said primer fuel duct is located in said engine mounting surface, and wherein said primer fuel supply means also includes a primer fuel inlet located in said exterior surface and adapted to be connected to a source of primer fuel, a primer fuel duct located in said carburetor mounting surface and communicating with said opening in said carburetor mounting surface, and a cross bore extending between said mounting surfaces and communicating between said primer fuel duct in said carburetor mounting surface and said primer fuel duct in said engine mounting surface.

Claim 9

An internal combustion engine in accordance with claim 5 and further including means securing said carburetor to said engine member with said intake manifold captured between said engine member and said carburetor and including fasteners extending through said intake manifold and into said engine member.

Claim 10

An internal combustion engine in accordance with claim 5 wherein said intake manifold is fabricated of composite material.

Claim 11

An internal combustion engine comprising an engine member including an intake manifold mounting face having therein an opening, an intake manifold including an exterior surface comprising an engine mounting surface on said manifold mounting face, and a carburetor mounting surface in spaced relation to said engine mounting surface, an intake passage extending between said mounting surfaces, terminating at said engine mounting surface in an opening located in alignment with said opening in said manifold mounting face, and terminating at said carburetor mounting surface in an opening, and means for supplying operating fuel to a carburetor, and a carburetor located on said carburetor mounting surface and including an air induction passage communicating with said opening in said carburetor mounting surface and a fuel inlet port communicating with said operating fuel supply means in said intake manifold.

Claim 12

An internal combustion engine comprising an engine member including an intake manifold mounting face having therein an opening, an intake manifold including an exterior surface comprising an engine mounting surface on said manifold mounting face, and a carburetor mounting surface in spaced relation to said engine mounting surface, an intake passage extending between said mounting surfaces, terminating at said engine mounting surface in an opening located in alignment with said opening in said manifold mounting face, and terminating at said carburetor mounting surface in an opening, and means for supplying operating fuel to a carburetor, and a carburetor located on said carburetor mounting surface and including an air induction passage communicating with said opening in said carburetor mounting surface and a fuel inlet port communicating with said operating fuel supply means in said intake manifold.

Claim 13

An internal combustion engine in accordance with claim 9 wherein said operating fuel supply means comprises a fuel supply recess located in said carburetor mounting surface and communicating with said fuel inlet port, and an internal duct communicating between said fuel supply recess and said exterior surface and adapted for communication with a fuel source.

Claim 14

An internal combustion engine in accordance with claim 9 and further including means securing said carburetor to said engine member with said intake manifold captured between said engine member and said carburetor and including fasteners extending through said intake manifold and into said engine member.

Claim 15

An internal combustion engine in accordance with claim 9 wherein said intake manifold is fabricated of composite material.

Claim 16

An internal combustion engine comprising an engine member including an intake manifold mounting face having therein a series of openings, an intake manifold including an exterior surface comprising an engine mounting surface on said manifold mounting face, and a carburetor mounting surface in spaced relation to said engine mounting surface, a like series of intake passages extending between said mounting surfaces, terminating at said engine mounting surface in respective openings respectively located in alignment with said openings in said manifold mounting face, and terminating at said carburetor mounting surface in respective openings, drains re-circulation means for delivering drains accumulating in said intake passages to intake passages other than said intake passages in which the drains accumulated, and means for supplying primer fuel to said intake passages, and a like series of carburetors on said carburetor mounting surface, said carburetors respectively including air induction passages respectively communicating with said openings in said carburetor mounting surface.

Claim 17

An internal combustion engine comprising an engine member including an intake manifold mounting face having therein a series of openings, an intake manifold including an exterior surface comprising an engine mounting surface on said manifold mounting face, and a carburetor mounting surface in spaced relation to said engine mounting surface, a like series of intake passages extending between said mounting surfaces, terminating at said engine mounting surface in respective openings respectively located in alignment with said openings in said manifold mounting face, and terminating at said carburetor mounting surface in respective openings, drains re-circulation means for delivering drains accumulating in said intake passages to intake passages other than said intake passages in which the drains accumulated, and means for supplying primer fuel to said intake passages, and a like series of carburetors on said carburetor mounting surface, said carburetors respectively including air induction passages respectively communicating with said openings in said carburetor mounting surface.

Claim 18

An internal combustion engine in accordance with claim 13 wherein said drains re-circulation means comprises a like series of drain ducts located in said engine mounting surface and respectively communicating with said openings in said engine mounting surface for draining drains from said intake passages, a like series of drain ducts located in said carburetor mounting surface and respectively communicating with said openings in said carburetor mounting surface for delivering drains to said intake passages, and a like series of cross bores extending between said mounting surfaces and respectively communicating with said drain ducts in said mounting surfaces, and wherein said primer fuel supply means comprises a primer fuel inlet located in said exterior surface and adapted to be connected to a source of primer fuel, a primer fuel duct located in said engine mounting surface and communicating with said primer fuel inlet, a like series of primer fuel ducts located in said carburetor mounting surface and respectively communicating with said openings in said carburetor mounting surface, and a like series of cross bores extending between said mounting surfaces and respectively communicating between said primer fuel duct in said carburetor mounting surface and said primer fuel ducts in said engine mounting surfaces.

Claim 19

An internal combustion engine in accordance with claim 13 and further including means securing said carburetors to said engine member with said intake manifold captured between said engine member and said carburetors and including fasteners extending through said intake manifold and into said engine member.

Claim 20

An internal combustion engine in accordance with claim 13 wherein said intake manifold is fabricated of composite material.

Claim 21

An internal combustion engine comprising an engine member including an intake manifold mounting face having therein a series of openings, an intake manifold including an exterior surface comprising an engine mounting surface on said manifold mounting face, and a carburetor mounting surface in spaced relation to said engine mounting surface, a like series of intake passages extending between said mounting surfaces, terminating at said engine mounting surface in respective openings respectively located in alignment with said openings in said manifold mounting face, and terminating at said carburetor mounting surface in respective openings, drains re-circulation means for delivering drains accumulating in said intake passages to intake passages other than said intake passages in which the drains accumulated, and means for supplying operating fuel to a like series of carburetors, and a like series of carburetors on said carburetor mounting surface, said carburetors including respective air induction passages respectively communicating with said openings in said carburetor mounting surface and respective fuel inlet ports respectively communicating with said operating fuel supply means in said intake manifold.

Claim 22

An internal combustion engine comprising an engine member including an intake manifold mounting face having therein a series of openings, an intake manifold including an exterior surface comprising an engine mounting surface on said manifold mounting face, and a carburetor mounting surface in spaced relation to said engine mounting surface, a like series of intake passages extending between said mounting surfaces, terminating at said engine mounting surface in respective openings respectively located in alignment with said openings in said manifold mounting face, and terminating at said carburetor mounting surface in respective openings, drains re-circulation means for delivering drains accumulating in said intake passages to intake passages other than said intake passages in which the drains accumulated, and means for supplying operating fuel to a like series of carburetors, and a like series of carburetors on said carburetor mounting surface, said carburetors including respective air induction passages respectively communicating with said openings in said carburetor mounting surface and respective fuel inlet ports respectively communicating with said operating fuel supply means in said intake manifold.

Claim 23

An internal combustion engine in accordance with claim 17 wherein said drains re-circulation means comprises a like series of drain ducts located in said engine mounting surface and respectively communicating with said openings in said engine mounting surface for draining drains from said intake passages, a like series of drain ducts located in said carburetor mounting surface and respectively communicating with said openings in said carburetor mounting surface for delivering drains to said intake passages, and a like series of cross bores extending between said mounting surfaces and respectively communicating with said drain ducts in said mounting surfaces, and wherein said operating fuel supply means comprises a like series of fuel supply recesses located in said carburetor mounting surface and respectively communicating with said fuel inlet ports, and a series of internal ducts respectively communicating between said fuel supply recesses and said exterior surface and adapted for communication with a source of operating fuel.

Claim 24

An internal combustion engine in accordance with claim 17 and further including means securing said carburetors to said engine member with said intake manifold captured between said engine member and said carburetors and including fasteners extending through said intake manifold and into said engine member.

Claim 25

An internal combustion engine in accordance with claim 17 wherein said intake manifold is fabricated of composite material.

Claim 26

An internal combustion engine comprising an engine member including an intake manifold mounting face having therein a series of openings, an intake manifold including an exterior surface comprising an engine mounting surface on said manifold mounting face, and a carburetor mounting surface in spaced relation to said engine mounting surface, a like series of intake passages extending between said mounting surfaces, terminating at said engine mounting surface in respective openings respectively located in alignment with said openings in said manifold mounting face, and terminating at said carburetor mounting surface in respective openings, drains re-circulation means for delivering drains accumulating in said intake passages to intake passages other than said intake passages in which the drains accumulated, means for supplying primer fuel to said intake passages, and means for supplying operating fuel to a like series of carburetors, and a like series of carburetors on said carburetor mounting surface, said carburetors including respective air induction passages respectively communicating with said openings in said carburetor mounting surface, and respective fuel inlet ports respectively communicating with said operating fuel supply means in said intake manifold.

Claim 27

An internal combustion engine comprising an engine member including an intake manifold mounting face having therein a series of openings, an intake manifold including an exterior surface comprising an engine mounting surface on said manifold mounting face, and a carburetor mounting surface in spaced relation to said engine mounting surface, a like series of intake passages extending between said mounting surfaces, terminating at said engine mounting surface in respective openings respectively located in alignment with said openings in said manifold mounting face, and terminating at said carburetor mounting surface in respective openings, drains re-circulation means for delivering drains accumulating in said intake passages to intake passages other than said intake passages in which the drains accumulated, means for supplying primer fuel to said intake passages, and means for supplying operating fuel to a like series of carburetors, and a like series of carburetors on said carburetor mounting surface, said carburetors including respective air induction passages respectively communicating with said openings in said carburetor mounting surface, and respective fuel inlet ports respectively communicating with said operating fuel supply means in said intake manifold.

Claim 28

An internal combustion engine in accordance with claim 21 wherein said drains re-circulation means comprises a like series of drain ducts located in said engine mounting surface and respectively communicating with said openings in said engine mounting surface for draining drains from said intake passages, a like series of drain ducts located in said carburetor mounting surface and respectively communicating with said openings in said carburetor mounting surface for delivering drains to said intake passages, and a like series of cross bores extending between said mounting surfaces and respectively communicating with said drain ducts in said mounting surfaces, wherein said primer fuel supply means comprises a primer fuel inlet located in said exterior surface and adapted to be connected to a source of primer fuel, a like series of primer fuel ducts located in said carburetor mounting surface and communicating with said openings in said carburetor mounting surface, a primer fuel duct located in said engine mounting surface and communicating with said primer fuel inlet, and a like series of cross bores extending between said mounting surfaces and respectively communicating with said primer fuel ducts in said carburetor mounting surface and with said primer fuel duct in said engine mounting surface, and wherein said operating fuel supply means comprises a like series of fuel supply recesses located in said carburetor mounting surface and respectively communicating with said fuel inlet ports, and a series of internal ducts respectively communicating between said fuel supply recesses and said exterior surface and adapted for communication with a source of operating fuel.

Claim 29

An internal combustion engine in accordance with claim 21 and further including means securing said carburetors to said engine member with said intake manifold captured between said engine member and said carburetors and including fasteners extending through said intake manifold and into said engine member.

Claim 30

An internal combustion engine in accordance with claim 21 wherein said intake manifold is fabricated of composite material.

Claim 31

An internal combustion engine comprising an engine block including an intake manifold mounting face having therein a series of rectangular openings, an intake manifold including an exterior surface comprising an engine mounting surface on said intake manifold mounting face, and a carburetor mounting surface in spaced parallel relation to said engine mounting surface, a like series of intake passages extending between said mounting surfaces, terminating at said engine mounting surface in respective rectangular openings respectively located in alignment with said openings in said manifold mounting face and having respective lower ends, and terminating at said carburetor mounting surface with respective circular openings, means for supplying operating fuel and including a like series of fuel supply recesses located in said carburetor mounting surface, and a like series of fuel supply conduits respectively communicating between said fuel supply recesses and said exterior surface, means for supplying primer fuel and comprising a primer fuel inlet port located in said exterior surface and adapted to communicate with a source of primer fuel, a common recess located in said engine mounting surface and communicating with said primer fuel inlet port, a like series of primer fuel cross bores extending between said mounting surfaces and communicating with said common recess, and a like series of duct defining recesses located in said carburetor mounting surface and respectively communicating with said primer fuel cross bores and with said openings in said carburetor mounting surface, and drains re-circulation means comprising a like series of sump defining recesses in said engine mounting surface, a like series of duct defining recesses located in said engine mounting surface and respectively communicating between said sump defining recesses and said lower ends of said openings in said engine block mounting surface, a first like series of cross bores extending between said mounting surfaces and respectively communicating with said series of sump defining recesses, a first like series of duct defining recesses in said carburetor mounting surface and respectively communicating with said first series of cross bores, a second like series of cross bores extending between said mounting surfaces and respectively communicating with said first like series of duct defining recesses in said carburetor mounting surface, a second like series of duct defining recesses extending in said engine mounting surface and respectively communicating with said second like series of cross bores, a third like series of cross bores extending between said mounting surfaces and respectively communicating with said second like series of duct defining recesses in said engine mounting surface, and a second like series of duct defining recesses in said carburetor mounting surface and respectively communicating between said third like series cf cross bores and said circular openings in said carburetor mounting surface, an operating fuel supply header exterior to said intake manifold and including a like series of branch conduit portions respectively communicating with said fuel supply conduits, and a common portion communicating with said branch portions and having therein a fuel filter and being adapted to communicate with a source of operating fuel, a like series of carburetors located on said carburetor mounting surface and including respective air induction passages respectively located in communication with said circular openings in said carburetor mounting surface, and respective fuel inlet ports respectively located in communication with said fuel supply recesses, means fastening said intake manifold to said engine block, and means securing said carburetors on said intake manifold including fasteners extending through said intake manifold and into said engine block.

Claim 32

An internal combustion engine comprising an engine block including an intake manifold mounting face having therein a series of rectangular openings, an intake manifold including an exterior surface comprising an engine mounting surface on said intake manifold mounting face, and a carburetor mounting surface in spaced parallel relation to said engine mounting surface, a like series of intake passages extending between said mounting surfaces, terminating at said engine mounting surface in respective rectangular openings respectively located in alignment with said openings in said manifold mounting face and having respective lower ends, and terminating at said carburetor mounting surface with respective circular openings, means for supplying operating fuel and including a like series of fuel supply recesses located in said carburetor mounting surface, and a like series of fuel supply conduits respectively communicating between said fuel supply recesses and said exterior surface, means for supplying primer fuel and comprising a primer fuel inlet port located in said exterior surface and adapted to communicate with a source of primer fuel, a common recess located in said engine mounting surface and communicating with said primer fuel inlet port, a like series of primer fuel cross bores extending between said mounting surfaces and communicating with said common recess, and a like series of duct defining recesses located in said carburetor mounting surface and respectively communicating with said primer fuel cross bores and with said openings in said carburetor mounting surface, and drains re-circulation means comprising a like series of sump defining recesses in said engine mounting surface, a like series of duct defining recesses located in said engine mounting surface and respectively communicating between said sump defining recesses and said lower ends of said openings in said engine block mounting surface, a first like series of cross bores extending between said mounting surfaces and respectively communicating with said series of sump defining recesses, a first like series of duct defining recesses in said carburetor mounting surface and respectively communicating with said first series of cross bores, a second like series of cross bores extending between said mounting surfaces and respectively communicating with said first like series of duct defining recesses in said carburetor mounting surface, a second like series of duct defining recesses extending in said engine mounting surface and respectively communicating with said second like series of cross bores, a third like series of cross bores extending between said mounting surfaces and respectively communicating with said second like series of duct defining recesses in said engine mounting surface, and a second like series of duct defining recesses in said carburetor mounting surface and respectively communicating between said third like series cf cross bores and said circular openings in said carburetor mounting surface, an operating fuel supply header exterior to said intake manifold and including a like series of branch conduit portions respectively communicating with said fuel supply conduits, and a common portion communicating with said branch portions and having therein a fuel filter and being adapted to communicate with a source of operating fuel, a like series of carburetors located on said carburetor mounting surface and including respective air induction passages respectively located in communication with said circular openings in said carburetor mounting surface, and respective fuel inlet ports respectively located in communication with said fuel supply recesses, means fastening said intake manifold to said engine block, and means securing said carburetors on said intake manifold including fasteners extending through said intake manifold and into said engine block.

Claim 33

An internal combustion engine in accordance with claim 25 wherein said intake manifold is fabricated of composite material.

Claim 34

An intake manifold including an engine mounting surface, a carburetor mounting surface in spaced relation to said engine mounting surface, a series of intake passages extending between said mounting surfaces, terminating at said engine mounting surface in respective openings and terminating at said carburetor mounting surface in respective openings, and drains re-circulation means for delivering drains accumulating in said intake passages to intake passages other than said intake passages in which the drains accumulated.

Claim 35

An intake manifold including an engine mounting surface, a carburetor mounting surface in spaced relation to said engine mounting surface, a series of intake passages extending between said mounting surfaces, terminating at said engine mounting surface in respective openings and terminating at said carburetor mounting surface in respective openings, and drains re-circulation means for delivering drains accumulating in said intake passages to intake passages other than said intake passages in which the drains accumulated.

Claim 36

An intake manifold in accordance with claim 27 wherein said recirculation means comprises a like series of drain ducts located in said engine mounting surface and respectively communicating with said openings in said engine mounting surface for draining drains from said intake passages, a like series of drain ducts located in said carburetor mounting surface and respectively communicating with said openings in said carburetor mounting surface for delivering drains to said intake passages, and a like series of cross bores extending between said mounting surfaces and respectively communicating with said drain ducts in said mounting surfaces.

Claim 37

An intake manifold in accordance with claim 27 wherein said intake manifold is fabricated of composite material.

Claim 38

An intake manifold including an exterior surface comprising an engine mounting surface, and a carburetor mounting surface in spaced relation to said engine mounting surface, an intake passage extending between said mounting surfaces, terminating at said engine mounting surface in an opening, and terminating at said carburetor mounting surface in an opening, and means for supplying primer fuel to said intake passage and comprising a primer fuel duct located in one of said mounting surfaces.

Claim 39

An intake manifold including an exterior surface comprising an engine mounting surface, and a carburetor mounting surface in spaced relation to said engine mounting surface, an intake passage extending between said mounting surfaces, terminating at said engine mounting surface in an opening, and terminating at said carburetor mounting surface in an opening, and means for supplying primer fuel to said intake passage and comprising a primer fuel duct located in one of said mounting surfaces.

Claim 40

An intake manifold in accordance with claim 30 wherein said said primer fuel duct is located in said engine mounting surface, and wherein said primer fuel supply means further comprises a primer fuel inlet located in said exterior surface and adapted to be connected to a source of primer fuel, and another primer fuel duct located in said carburetor mounting surface and communicating with said opening in said carburetor mounting surface, and a cross bore extending between said mounting surfaces and communicating between said primer fuel duct in said carburetor mounting surface and said primer fuel duct in said engine mounting surface.

Claim 41

An intake manifold in accordance with claim 30 wherein said intake manifold is fabricated of composite material.

Claim 42

An intake manifold including an exterior surface comprising an engine mounting surface, and a carburetor mounting surface in spaced relation to said engine mounting surface, an intake passage extending between said mounting surfaces, terminating at said engine mounting surface in an opening, and terminating at said carburetor mounting surface in an opening, and means in said manifold for supplying operating fuel to a carburetor.

Claim 43

An intake manifold including an exterior surface comprising an engine mounting surface, and a carburetor mounting surface in spaced relation to said engine mounting surface, an intake passage extending between said mounting surfaces, terminating at said engine mounting surface in an opening, and terminating at said carburetor mounting surface in an opening, and means in said manifold for supplying operating fuel to a carburetor.

Claim 44

An intake manifold in accordance with claim 33 wherein said operating fuel supply means comprises a fuel supply recess located in said carburetor mounting surface and adapted to supply fuel to the carburetor, and an internal duct communicating between said fuel supply recess and said exterior surface and adapted for communication with a source of operating fuel.

Claim 45

An intake manifold in accordance with claim 33 wherein said intake manifold is fabricated of composite material.

Claim 46

An intake manifold including an exterior surface comprising an engine mounting surface, and a carburetor mounting surface in spaced relation to said engine mounting surface, a series of intake passages extending between said mounting surfaces, terminating at said engine mounting surface in respective openings, and terminating at said carburetor mounting surface in respective openings, drains re circulation means for delivering drains accumulating in said intake passages to intake passages other than said intake passages in which the drains accumulated, and means for supplying primer fuel to said intake passages.

Claim 47

An intake manifold including an exterior surface comprising an engine mounting surface, and a carburetor mounting surface in spaced relation to said engine mounting surface, a series of intake passages extending between said mounting surfaces, terminating at said engine mounting surface in respective openings, and terminating at said carburetor mounting surface in respective openings, drains re circulation means for delivering drains accumulating in said intake passages to intake passages other than said intake passages in which the drains accumulated, and means for supplying primer fuel to said intake passages.

Claim 48

An intake manifold in accordance with claim 36 wherein said drains re-circulation means comprises a like series of drain ducts located in said engine mounting surface and respectively communicating with said openings in said engine mounting surface for draining drains from said intake passages, a like series of drain ducts located in said carburetor mounting surface and respectively communicating with said openings in said carburetor mounting surface for delivering drains to said intake passages, and a like series of cross bores extending between said mounting surfaces and respectively communicating with said drain ducts in said mounting surfaces, and wherein said primer fuel supply means comprises a primer fuel inlet located in said exterior surface and adapted to be connected to a source of primer fuel, a primer fuel duct located in said engine mounting surface and communicating with said primer fuel inlet, a like series of primer fuel ducts located in said carburetor mounting surface and respectively communicating with said openings in said carburetor mounting surface, and a like series of cross bores extending between said mounting surfaces and respectively communicating between said primer fuel ducts in said carburetor mounting surface and said primer fuel duct in said engine mounting surface.

Claim 49

An intake manifold in accordance with claim 36 wherein said intake manifold is fabricated of composite material.

Claim 50

An intake manifold including an exterior surface comprising an engine mounting surface, and a carburetor mounting surface in spaced relation to said engine mounting surface, a series of intake passages extending between said mounting surfaces, terminating at said engine mounting surface in respective openings, and terminating at said carburetor mounting surface in respective openings, drains re-circulation means for delivering drains accumulating in said intake passages to intake passages other than said intake passages in which the drains accumulated, and means for supplying operating fuel to a like series of carburetors.

Claim 51

An intake manifold including an exterior surface comprising an engine mounting surface, and a carburetor mounting surface in spaced relation to said engine mounting surface, a series of intake passages extending between said mounting surfaces, terminating at said engine mounting surface in respective openings, and terminating at said carburetor mounting surface in respective openings, drains re-circulation means for delivering drains accumulating in said intake passages to intake passages other than said intake passages in which the drains accumulated, and means for supplying operating fuel to a like series of carburetors.

Claim 52

An intake manifold in accordance with claim 39 wherein said drains re-circulation means comprises a like series of drain ducts located in said engine mounting surface and respectively communicating with said openings in said engine mounting surface for draining drains from said intake passages, a like series of drain ducts located in said carburetor mounting surface and respectively communicating with said openings in said carburetor mounting surface for delivering drains to said intake passages, and a like series of cross bores extending between said mounting surfaces and respectively communicating with said drain ducts in said mounting surfaces, and wherein said operating fuel supply means comprises a like series of fuel supply recesses located in said carburetor mounting surface and respectively adapted to supply fuel to the carburetors, and a like series of internal ducts respectively communicating between said fuel supply recesses and said exterior surface and adapted for communication with a fuel source.

Claim 53

An intake manifold in accordance with claim 39 wherein said intake manifold is fabricated of composite material.

Claim 54

An intake manifold including an exterior surface comprising an engine mounting surface, and a carburetor mounting surface in spaced relation to said engine mounting surface, a series of intake passages extending between said mounting surfaces, terminating at said engine mounting surface in respective openings, and terminating at said carburetor mounting surface in respective openings, drains re-circulation means for delivering drains accumulating in said intake passages to intake passages other than said intake passages in which the drains accumulated, means for supplying primer fuel to said intake passages, and means for supplying operating fuel to a like series of carburetors.

Claim 55

An intake manifold including an exterior surface comprising an engine mounting surface, and a carburetor mounting surface in spaced relation to said engine mounting surface, a series of intake passages extending between said mounting surfaces, terminating at said engine mounting surface in respective openings, and terminating at said carburetor mounting surface in respective openings, drains re-circulation means for delivering drains accumulating in said intake passages to intake passages other than said intake passages in which the drains accumulated, means for supplying primer fuel to said intake passages, and means for supplying operating fuel to a like series of carburetors.

Claim 56

An intake manifold in accordance with claim 42 wherein said drains re-circulation means comprises a like series of drain ducts located in said engine mounting surface and respectively communicating with said openings in said engine mounting surface for draining drains from said intake passages, a like series of drain ducts located in said carburetor mounting surface and respectively communicating with said openings in said carburetor mounting surface for delivering drains to said intake passages, and a like series of cross bores extending between said mounting surfaces and respectively communicating with said drain ducts in said mounting surfaces, wherein said primer fuel supply means comprises a primer fuel inlet located in said exterior surface and adapted to be connected to a source of primer fuel, a primer fuel duct located in said engine mounting surface and communicating with said primer fuel inlet, a like series of primer fuel ducts located in said carburetor mounting surface and respectively communicating with said openings in said carburetor mounting surface, and a like series of cross bores extending between said mounting surfaces and respectively communicating between said primer fuel ducts in said carburetor mounting surface and said primer fuel duct in said engine mounting surface, and wherein said operating fuel supply means comprises a like series of fuel supply recess located in said carburetor mounting surface and respectively adapted to supply fuel to the carburetors, and a like series of internal ducts respectively communicating between said fuel supply recesses and said exterior surface and adapted for communication with a fuel source.

Claim 57

An intake manifold in accordance with claim 42 wherein said intake manifold is fabricated of composite material.

Claim 58

An internal combustion engine comprising an engine member including an intake manifold mounting face, an intake manifold including an engine mounting surface on said manifold mounting face, and a carburetor mounting surface in spaced parallel relation to said engine mounting surface, a carburetor on said carburetor mounting surface, one of said manifold mounting surfaces including therein a recess adapted for conveying a fluid, and means securing said carburetor to said engine member with said intake manifold captured between said engine member and said carburetor and including fasteners extending through said intake manifold and into said engine member.

Claim 59

An internal combustion engine comprising an engine member including an intake manifold mounting face, an intake manifold including an engine mounting surface on said manifold mounting face, and a carburetor mounting surface in spaced parallel relation to said engine mounting surface, a carburetor on said carburetor mounting surface, one of said manifold mounting surfaces including therein a recess adapted for conveying a fluid, and means securing said carburetor to said engine member with said intake manifold captured between said engine member and said carburetor and including fasteners extending through said intake manifold and into said engine member.

Claim 60

An internal combustion engine comprising an engine member including an intake manifold mounting face having therein a series of openings, an intake manifold including an engine mounting surface on said manifold mounting face, a carburetor mounting surface in spaced parallel relation to said engine mounting surface, and a like series of intake passages extending between said mounting surfaces, terminating at said engine mounting surface in respective openings respectively located in alignment with said openings in said manifold mounting face, and terminating at said carburetor mounting surface in respective openings, said intake manifold further including drains re-circulation means for delivering drains accumulating in said intake passages to intake passages other than said intake passages in which the drains accumulated, a carburetor on said carburetor mounting surface, and means securing said carburetor to said engine member with said intake manifold captured between said engine member and said carburetor and including fasteners extending through said intake manifold and into said engine member.

Claim 61

An internal combustion engine comprising an engine member including an intake manifold mounting face having therein a series of openings, an intake manifold including an engine mounting surface on said manifold mounting face, a carburetor mounting surface in spaced parallel relation to said engine mounting surface, and a like series of intake passages extending between said mounting surfaces, terminating at said engine mounting surface in respective openings respectively located in alignment with said openings in said manifold mounting face, and terminating at said carburetor mounting surface in respective openings, said intake manifold further including drains re-circulation means for delivering drains accumulating in said intake passages to intake passages other than said intake passages in which the drains accumulated, a carburetor on said carburetor mounting surface, and means securing said carburetor to said engine member with said intake manifold captured between said engine member and said carburetor and including fasteners extending through said intake manifold and into said engine member.

Claim 62

An internal combustion engine in accordance with claim 46 wherein said drains re-circulation means includes a least one duct in one of said mounting surfaces.

Claim 63

An internal combustion engine comprising an engine member including an intake manifold mounting face having therein an opening, an intake manifold including an engine mounting surface on said manifold mounting face, a carburetor mounting surface in spaced parallel relation to said engine mounting surface, an intake passage extending between said mounting surfaces, terminating at said engine mounting surface in a opening located in alignment with said opening in said manifold mounting face, and terminating at said carburetor mounting surface in an opening, and means for supplying primer fuel to said intake passage, a carburetor on said carburetor mounting surface, and means securing said carburetor to said engine member with said intake manifold captured between said engine member and said carburetor and including fasteners extending through said intake manifold and into said engine member.

Claim 64

An internal combustion engine comprising an engine member including an intake manifold mounting face having therein an opening, an intake manifold including an engine mounting surface on said manifold mounting face, a carburetor mounting surface in spaced parallel relation to said engine mounting surface, an intake passage extending between said mounting surfaces, terminating at said engine mounting surface in a opening located in alignment with said opening in said manifold mounting face, and terminating at said carburetor mounting surface in an opening, and means for supplying primer fuel to said intake passage, a carburetor on said carburetor mounting surface, and means securing said carburetor to said engine member with said intake manifold captured between said engine member and said carburetor and including fasteners extending through said intake manifold and into said engine member.

Claim 65

An internal combustion engine in accordance with claim 48 wherein said means for supplying primer fuel includes at least one duct in one of said mounting surfaces.

Claim 66

An internal combustion engine in accordance with claim 45 wherein said intake manifold mounting face includes therein an opening, wherein said intake manifold includes an intake passage extending between said mounting surfaces, terminating at said engine mounting surface in an opening located in alignment with said opening in said manifold mounting face, and terminating at said carburetor mounting surface in an opening, said intake manifold further including means for supplying operating fuel to a carburetor on said carburetor mounting surface.

Claim 67

An internal combustion engine comprising an engine member including an intake manifold mounting face having therein an opening, an intake manifold including an engine mounting surface on said manifold mounting face, a carburetor mounting surface in spaced parallel relation to said engine mounting surface, an intake passage extending between said mounting surfaces, terminating at said engine mounting surface in an opening located in alignment with said opening in said manifold mounting face, and terminating at said carburetor mounting surface in an opening, and means for supplying operating fuel to a carburetor on said carburetor mounting surface, said operating fuel supply means including a recess in said carburetor mounting surface, a carburetor on said carburetor mounting surface, and means securing said carburetor to said engine member with said intake manifold captured between said engine member and said carburetor and including fasteners extending through said intake manifold and into said engine member.

Claim 68

An internal combustion engine comprising an engine member including an intake manifold mounting face having therein an opening, an intake manifold including an engine mounting surface on said manifold mounting face, a carburetor mounting surface in spaced parallel relation to said engine mounting surface, an intake passage extending between said mounting surfaces, terminating at said engine mounting surface in an opening located in alignment with said opening in said manifold mounting face, and terminating at said carburetor mounting surface in an opening, and means for supplying operating fuel to a carburetor on said carburetor mounting surface, said operating fuel supply means including a recess in said carburetor mounting surface, a carburetor on said carburetor mounting surface, and means securing said carburetor to said engine member with said intake manifold captured between said engine member and said carburetor and including fasteners extending through said intake manifold and into said engine member.

Claim 69

An internal combustion engine comprising an engine member including an intake manifold mounting face having therein a series of openings, an intake manifold including an engine mounting surface on said manifold mounting face, a carburetor mounting surface in spaced parallel relation to said engine mounting surface, a like series of intake passages extending between said mounting surfaces, terminating at said engine mounting surface in respective openings respectively located in alignment with said openings in said manifold mounting face, and terminating at said carburetor mounting surface in respective openings, drains re-circulation means for delivering drains accumulating in said intake passages to intake passages other than said intake passages in which the drains accumulated, and means for supplying primer fuel to said intake passages, a carburetor on said carburetor mounting surface, and means securing said carburetor to said engine member with said intake manifold captured between said engine member and said carburetor and including fasteners extending through said intake manifold and into said engine member.

Claim 70

An internal combustion engine comprising an engine member including an intake manifold mounting face having therein a series of openings, an intake manifold including an engine mounting surface on said manifold mounting face, a carburetor mounting surface in spaced parallel relation to said engine mounting surface, a like series of intake passages extending between said mounting surfaces, terminating at said engine mounting surface in respective openings respectively located in alignment with said openings in said manifold mounting face, and terminating at said carburetor mounting surface in respective openings, drains re-circulation means for delivering drains accumulating in said intake passages to intake passages other than said intake passages in which the drains accumulated, and means for supplying primer fuel to said intake passages, a carburetor on said carburetor mounting surface, and means securing said carburetor to said engine member with said intake manifold captured between said engine member and said carburetor and including fasteners extending through said intake manifold and into said engine member.

Claim 71

An internal combustion engine in accordance with claim 52 wherein said drains re-circulation means and said means for supplying primer fuel each includes at least one duct in one of said mounting surfaces.

Claim 72

An internal combustion engine comprising an engine member including an intake manifold mounting face having therein a series of openings, an intake manifold including an engine mounting surface on said manifold mounting face, a carburetor mounting surface in spaced parallel relation to said engine mounting surface, a like series of intake passages extending between said mounting surfaces, terminating at said engine mounting surface in respective openings respectively located in alignment with said openings in said manifold mounting face, and terminating at said carburetor mounting surface in respective openings, drains re-circulation means for delivering drains accumulating in said intake passages to intake passages other than said intake passages in which the drains accumulated, and means for supplying operating fuel to a like series of carburetors on said carburetor mounting surface, a like series of carburetors on said carburetor mounting surface, and means securing said carburetors to said engine member with said intake manifold captured between said engine member and said carburetors and including fasteners extending through said intake manifold and into said engine member.

Claim 73

An internal combustion engine comprising an engine member including an intake manifold mounting face having therein a series of openings, an intake manifold including an engine mounting surface on said manifold mounting face, a carburetor mounting surface in spaced parallel relation to said engine mounting surface, a like series of intake passages extending between said mounting surfaces, terminating at said engine mounting surface in respective openings respectively located in alignment with said openings in said manifold mounting face, and terminating at said carburetor mounting surface in respective openings, drains re-circulation means for delivering drains accumulating in said intake passages to intake passages other than said intake passages in which the drains accumulated, and means for supplying operating fuel to a like series of carburetors on said carburetor mounting surface, a like series of carburetors on said carburetor mounting surface, and means securing said carburetors to said engine member with said intake manifold captured between said engine member and said carburetors and including fasteners extending through said intake manifold and into said engine member.

Claim 74

An internal combustion engine in accordance with claim 54 wherein said drains re-circulation means includes at least one duct in one of said mounting surfaces and wherein said operating fuel supply means includes a like series of recesses in said carburetor mounting surface.

Claim 75

An internal combustion engine comprising an engine member including an intake manifold mounting face having therein a series of openings, an intake manifold including an engine mounting surface on said manifold mounting face, a carburetor mounting surface in spaced parallel relation to said engine mounting surface, a like series of intake passages extending between said mounting surfaces, terminating at said engine mounting surface in respective openings respectively located in alignment with said openings in said manifold mounting face, and terminating at said carburetor mounting surface in respective openings, drains re-circulation means for delivering drains accumulating in said intake passages to intake passages other than said intake passages in which the drains accumulated, means for supplying primer fuel to said intake passages, and means for supplying operating fuel to a like series of carburetors on said carburetor mounting surface, a like series of carburetors on said carburetor mounting surface, and means securing said carburetors to said engine member with said intake manifold captured between said engine member and said carburetors and including fasteners extending through said intake manifold and into said engine member.

Claim 76

An internal combustion engine comprising an engine member including an intake manifold mounting face having therein a series of openings, an intake manifold including an engine mounting surface on said manifold mounting face, a carburetor mounting surface in spaced parallel relation to said engine mounting surface, a like series of intake passages extending between said mounting surfaces, terminating at said engine mounting surface in respective openings respectively located in alignment with said openings in said manifold mounting face, and terminating at said carburetor mounting surface in respective openings, drains re-circulation means for delivering drains accumulating in said intake passages to intake passages other than said intake passages in which the drains accumulated, means for supplying primer fuel to said intake passages, and means for supplying operating fuel to a like series of carburetors on said carburetor mounting surface, a like series of carburetors on said carburetor mounting surface, and means securing said carburetors to said engine member with said intake manifold captured between said engine member and said carburetors and including fasteners extending through said intake manifold and into said engine member.

Claim 77

An internal combustion engine in accordance with claim 56 wherein said drains re-circulation means and said means for supplying primer fuel each includes a least one duct in one of said mounting surfaces, and wherein said operating fuel supply means includes a like series of recesses in said carburetor mounting surface.

Claim 78

An internal combustion engine in accordance with claim 45 wherein said intake manifold is fabricated of composite material.

Claim 79

An internal combustion engine in accordance with claim 45 wherein said mounting surfaces are each planar.

Claim 80

An intake manifold including an engine mounting surface, a carburetor mounting surface in spaced relation to said engine mounting surface, an intake passage extending between said mounting surfaces, terminating at said engine mounting surface in an opening and terminating at said carburetor mounting surface in an opening, and means for draining drains accumulating in said intake passage, said means comprising a drain duct in said carburetor mounting surface, and a cross bore extending between said mounting surfaces and communicating between said opening in said engine mounting surface and said drain duct.

Claim 81

An intake manifold including an engine mounting surface, a carburetor mounting surface in spaced relation to said engine mounting surface, an intake passage extending between said mounting surfaces, terminating at said engine mounting surface in an opening and terminating at said carburetor mounting surface in an opening, and means for draining drains accumulating in said intake passage, said means comprising a drain duct in said carburetor mounting surface, and a cross bore extending between said mounting surfaces and communicating between said opening in said engine mounting surface and said drain duct.

Claim 82

An intake manifold as set forth in claim 60 wherein said means also comprises a sump communicating with said opening in said engine mounting surface, and wherein said cross bore communicates with said sump.

Claim 83

An intake manifold as set forth in claim 60 wherein said means also comprises a drain duct in said engine mounting surface, and a second cross bore extending between said mounting surfaces and communicating between said drain duct in said carburetor mounting surface and said drain duct in said engine mounting surface.

Claim 84

An intake manifold as set forth in claim 60 wherein said means also comprises a second cross bore extending between said mounting surfaces and communicating between said opening in said engine mounting surface and said drain duct.

Claim 85

An intake manifold as set forth in claim 63 wherein said means also comprises a sump communicating with said opening in said engine mounting surface, and wherein said cross bores communicate with said sump.

Claim 86

An internal combustion engine comprising an engine block including an intake manifold mounting surface and defining a cylinder and a transfer passage communicating with said cylinder, an intake manifold including an engine mounting surface mating with said intake manifold mounting surface, a carburetor mounting surface in spaced relation to said engine mounting surface, an intake passage extending between said engine mounting surface and said carburetor mounting surface, terminating at said engine mounting surface in an opening communicating with said transfer passage, and terminating at said carburetor mounting surface in an opening, and drains recirculation means comprising a drain duct located in said engine mounting surface and communicating with said opening in said engine mounting surface, and means for delivering drains from said drain duct to said transfer passage.

Claim 87

An internal combustion engine comprising an engine block including an intake manifold mounting surface and defining a cylinder and a transfer passage communicating with said cylinder, an intake manifold including an engine mounting surface mating with said intake manifold mounting surface, a carburetor mounting surface in spaced relation to said engine mounting surface, an intake passage extending between said engine mounting surface and said carburetor mounting surface, terminating at said engine mounting surface in an opening communicating with said transfer passage, and terminating at said carburetor mounting surface in an opening, and drains recirculation means comprising a drain duct located in said engine mounting surface and communicating with said opening in said engine mounting surface, and means for delivering drains from said drain duct to said transfer passage.

Claim 88

An engine as set forth in claim 65 wherein said means for deliverying drains from said drain duct to said transfer passage includes a flexible conduit.