Internal combustion engine crankcase with dry-sump lubrication

Claim 2

A crankcase for an internal combustion engine with dry sump lubrication, wherein the improvement comprises a relatively flat crankcase bottom part provided with at least one space for the lubricant sump having disposed therein at least two suction places at substantially the same level, at least two of said suction places being operatively connected with separate suction pump means for return of a lubricant to a collection sump and being each arranged at a place of the sump space constituting a lower space for a predetermined inclined position of the engine.

Claim 3

A crankcase according to claim 1, wherein at least two suction places of a respective sump space are arranged with separate suction pump means on different sides of the longitudinal axis of the space.

Claim 4

A crankcase for an internal combustion engine with dry-sump lubrication, wherein the improvement comprises a relatively flat crankcase bottom part provided with at least one space for the lubricant sump having at least two suction places at substantially the same level, at least two of said suction places being operatively connected with separate suction pump means, and being each arranged at a place of the sump space constituting a lower space for a predetermined inclined position of the engine, wherein at least two suction places of a respective sump are arranged with separate suction pump means on different sides of the longitudinal axis of the space, characterized by at least one pair of suction places in each sum space, each pair being operatively connected with two suction pump means, one suction pump means for each suction place, and each suction place of a respective pair being arranged at a different longitudinal end of the sump space and on a different side of the space longitudinal axis.

Claim 5

A crankcase for an internal combustion engine with dry-sump lubrication, wherein the improvement comprises a relatively flat crankcase bottom part provided with at least one space for the lubricant sump having at least two suction places at substantially the same level, at least two of said suction places being operatively connected with separate suction pump means, and being each arranged at a place of the sump space constituting a lower space for a predetermined inclined position of the engine, wherein at least two suction places of a respective sump are arranged with separate suction pump means on different sides of the longitudinal axis of the space, characterized by at least one pair of suction places in each sum space, each pair being operatively connected with two suction pump means, one suction pump means for each suction place, and each suction place of a respective pair being arranged at a different longitudinal end of the sump space and on a different side of the space longitudinal axis.

Claim 6

A crankcase according to claim 3, wherein the housing bottom part is subdivided into two sump spaces arranged one behind the other in the longitudinal axis of the housing.

Claim 7

A crankcase according to claim 4, wherein the suction places arranged on the same side of the housing longitudinal axis from both sump spaces are operatively connected with a common suction pump means.

Claim 8

A crankcase according to claim 5, wherein the suction places from both sump spaces operatively connected with a common suction pump means are arranged at the same longitudinal ends.

Claim 9

A crankcase according to claim 6, wherein the last-mentioned suction places of both sump spaces connected with a common suction pump means are arranged at a respective one of the forward and rearward longitudinal ends of the corresponding space.

Claim 10

A crankcase according to claim 6, wherein each suction place is provided with an aperture terminating in the sump which extends transversely to the Housing longitudinal axis.

Claim 11

A crankcase according to claim 8, wherein the suction pump means are arranged at the outer wall of the crankcase.

Claim 12

A crankcase according to claim 9, further comprising inner housing line means between a respective suction place and the corresponding passage opening in the housing wall and extending substantially transversely to the housing longitudinal axis.

Claim 13

A crankcase according to claim 10, wherein the suction place and its communicating passage aperture in the housing wall are arranged on the same side of the housing longitudinal axis.

Claim 14

A crankcase for an internal combustion engine with dry-sump lubrication, wherein the improvement comprises a relatively flat crankcase bottom part provided with at least one space for the lubricant sump having at least two suction places at substantially the same level, at least two of said suction places being operatively connected with separate suction pump means and being each arranged at a place of the sump space constituting a lower space for a predetermined inclined position of the engine, characterized by at least one pair of suction places in each sump space, each pair being operatively connected with two suction pump means, one suction pump means for each suction place, and each suction place of a respective pair being arranged at a different longitudinal end of the sump space and on a different side of the space longitudinal axis.

Claim 15

A crankcase for an internal combustion engine with dry-sump lubrication, wherein the improvement comprises a relatively flat crankcase bottom part provided with at least one space for the lubricant sump having at least two suction places at substantially the same level, at least two of said suction places being operatively connected with separate suction pump means and being each arranged at a place of the sump space constituting a lower space for a predetermined inclined position of the engine, characterized by at least one pair of suction places in each sump space, each pair being operatively connected with two suction pump means, one suction pump means for each suction place, and each suction place of a respective pair being arranged at a different longitudinal end of the sump space and on a different side of the space longitudinal axis.

Claim 16

A crankcase according to claim 12, wherein the housing bottom part is subdivided into two sump spaces arranged one behind the other in the longitudinal axis of the housing.

Claim 17

A crankcase according to claim 13, wherein the suction places arranged on the same side of the housing longitudinal axis from both sump spaces are operatively connected with a common suction pump means.

Claim 18

A crankcase according to claim 14, wherein the suction places from both sum spaces operatively connected with a common suction pump means are arranged at the same longitudinal ends.

Claim 19

A crankcase according to claim 12, wherein each suction place is provided with an aperture terminating in the sump which extends transversely to the housing longitudinal axis.

Claim 20

A crankcase according to claim 1, wherein the suction pump means are arranged at the outer wall of the crankcase.

Claim 21

A crankcase according to claim 16, further comprising inner housing line means between a respective suction place and the corresponding passage opening in the housing wall and extending substantially transversely to the housing longitudinal axis.

Claim 22

A crankcase according to claim 18, wherein the suction place and its communicating passage aperture in the housing wall are arranged on the same side of the housing longitudinal axis.

Claim 23

A crankcase according to claim 1, wherein the housing bottom part is subdivided into two sump spaces arranged one behind the other in the longitudinal axis of the housing.

Claim 24

A crankcase according to claim 20, wherein the suction places arranged on the same side of the housing longitudinal axis from both sump spaces are operatively connected with a common suction pump means.

Claim 25

A crankcase according to claim 20, wherein the suction places from both sump spaces operatively connected with a common suction pump means are arranged at the same longitudinal ends.

Claim 26

A crankcase according to claim 22, wherein the last-mentioned suction places of both sump spaces connected with a common suction pump means are arranged at a respective one of the forward and rearward longitudinal ends of the corresponding space.

Claim 27

A crankcase according to claim 1, wherein each suction place is provided with an aperture terminating in the sump which extends transversely to the housing longitudinal axis.

Claim 28

A crankcase according to claim 1, further comprising inner housing line means between a respective suction place and the corresponding passage opening in the housing wall and extending substantially transversely to the housing longitudinal axis.

Claim 29

A crankcase according to claim 25, wherein the suction place and its communicating passage aperture in the housing wall are arranged on the same side of the housing longitudinal axis.