Flame heater plug for air-compressing internal combustion engines

Claim 2

A flame heater-plug for air-compressing internal combustion engines which is arranged in the suction pipe thereof and includes heater means adapted to be heated and connected with the fuel supply system, characterized in that the part of the heaterplug projecting into the suction pipe is surrounded by a protective cap means open on the side leading toward the internal combustion engine and substantially closed toward the opposite side, and in that the heater means in said plug includes at least two heater elements, a relatively very small amount of fuel being adapted to be supplied to a first one of said heater elements while a substantially greater amount of fuel is adapted to be supplied to a second of said heater elements.

Claim 3

A flame heater-plug according to claim 1, wherein the protective cap means extends only approximately up to half the plug cross section.

Claim 4

A flame heater-plug according to claim 1, wherein the protective cap means is provided with at least one small aperture on the side facing the suction filter.

Claim 5

A flame heater-plug according to claim 1, wherein the protective cap means is provided at its end with a closed bottom.

Claim 6

A flame heater-plug according to claim 4, wherein the protective cap means projects beyond the end of the heater element by a considerable amount.

Claim 7

A flame heater-plug for air-compressing internal combustion engines which is arranged in the suction pipe thereof and includes at least two heater elements adapted to be heated and connected with the fuel supply system, characterized in that the part of said heater-plug projecting into the suction pipe is surrounded by a protective cap means open on the side leading toward the internal combustion engine and substantially closed toward the opposite side, and in that no fuel is supplied to a first one of said heater elements while fuel is adapted to be supplied to a second of said heater elements.

Claim 8

A flame heater-plug for air-compressing internal combustion engines which is arranged in the suction pipe thereof and includes at least two heater elements adapted to be heated and connected with the fuel supply system, characterized in that the part of said heater-plug projecting into the suction pipe is surrounded by a protective cap means open on the side leading toward the internal combustion engine and substantially closed toward the opposite side, and in that no fuel is supplied to a first one of said heater elements while fuel is adapted to be supplied to a second of said heater elements.

Claim 9

A flame heater-plug according to claim 6, wherein several heater elements are provided to which relatively more fuel is supplied.

Claim 10

A flame heater-plug according to claim 7, wherein the first heater element is arranged in the plug on the side facing the internal combustion engine.

Claim 11

A flame heater-plug for air-compressing internal combustion engines which is arranged in the suction pipe thereof and includes at least two heater elements adapted to be heated and connected with the fuel supply system, characterized in that the part of the heater-plug projecting into the suction pipe is surrounded by a protective cap means open on the side leading toward the internal combustion engine and substantially closed toward the opposite side, less fuel being adapted to be supplied to a first one of said heater elements while more fuel is adapted to be supplied to a second of said heater elements, and the first heater element being arranged in the plug on the side facing the internal combustion engine.

Claim 12

A flame heater-plug for air-compressing internal combustion engines which is arranged in the suction pipe thereof and includes at least two heater elements adapted to be heated and connected with the fuel supply system, characterized in that the part of the heater-plug projecting into the suction pipe is surrounded by a protective cap means open on the side leading toward the internal combustion engine and substantially closed toward the opposite side, less fuel being adapted to be supplied to a first one of said heater elements while more fuel is adapted to be supplied to a second of said heater elements, and the first heater element being arranged in the plug on the side facing the internal combustion engine.

Claim 13

A flame heater-plug according to claim 9, wherein the protective cap means is provided at its end with a closed bottom.

Claim 14

A flame heater-plug according to claim 10, wherein the protective cap means projects beyond the end of the heater element by a considerable amount.

Claim 15

A flame heater-plug according to claim 11, wherein the protective cap means is provided with at least one small aperture on the side facing the suction filter.

Claim 16

A flame heater-plug according to claim 12, wherein the protective means is secured at the walls of the suction pipe and surrounds a bore intended for the installation of the plug.

Claim 17

A flame heater-plug according to claim 12, wherein the protective cap means extends only approximately up to half the plug cross section.

Claim 18

A flame heater-plug for air-compressing interNal combustion engines which is arranged in the suction pipe thereof and includes at least two heater elements adapted to be heated and connected with the fuel supply system, characterized in that substantially no fuel is supplied to one heater element while fuel is supplied to several other heater elements.

Claim 19

A flame heater-plug for air-compressing interNal combustion engines which is arranged in the suction pipe thereof and includes at least two heater elements adapted to be heated and connected with the fuel supply system, characterized in that substantially no fuel is supplied to one heater element while fuel is supplied to several other heater elements.

Claim 20

A flame heater-plug according to claim 15, wherein the one heater element is arranged in the plug on the side facing the internal combustion engine.

Claim 21

A flame heater-plug for air-compressing internal combustion engines which is arranged in the suction pipe thereof and includes at least two heater elements adapted to be heated and connected with the fuel supply system, characterized in that the two heater elements are part of and extend together with said plug into the suction pipe, and that a relatively very small amount of fuel is supplied to one heater element while a substantially greater amount of fuel is supplied to the other heater element.

Claim 22

A flame heater-plug for air-compressing internal combustion engines which is arranged in the suction pipe thereof and includes at least two heater elements adapted to be heated and connected with the fuel supply system, characterized in that the two heater elements are part of and extend together with said plug into the suction pipe, and that a relatively very small amount of fuel is supplied to one heater element while a substantially greater amount of fuel is supplied to the other heater element.

Claim 23

A flame heater-plug according to claim 17, characterized in that the part of the heater-plug projecting into the suction pipe includes protective cap means open on the side leading toward the internal combustion engine and substantially closed toward the opposite side, said protective cap means being secured at the walls of the suction pipe and surrounding a bore intended for the installation of the plug so that the protective cap means is always in the correct position with the open side thereof on the side of the engine, regardless of the position of the installed plug.

Claim 24

A flame heater-plug for air-compressing internal combustion engines which is arranged in the suction pipe thereof conducting the normal combustion air flow and includes at least two heater elements adapted to be heated and connected with the fuel supply system, characterized in that a respective plug extends into said suction pipe, in that substantially no fuel is supplied to one heater element while fuel is supplied to another heater element, and in that the at least two heater elements form an integral unit with the respective plug.

Claim 25

A flame heater-plug for air-compressing internal combustion engines which is arranged in the suction pipe thereof conducting the normal combustion air flow and includes at least two heater elements adapted to be heated and connected with the fuel supply system, characterized in that a respective plug extends into said suction pipe, in that substantially no fuel is supplied to one heater element while fuel is supplied to another heater element, and in that the at least two heater elements form an integral unit with the respective plug.

Claim 26

A flame heater-plug according to claim 19, characterized in that the part of the heater plug projecting into the suction pipe includes protective cap means open on the side leading toward the internal combustion engine and substantially closed toward the opposite side, said protective cap means being secured at the walls of the suction pipe and surrounding a bore intended for the installation of the plug so that the protective cap means is always in the correct position with the open side thereof on the side of the engine, regardless of the position of the installed plug.

Claim 27

A flame heater-plug for air-compressing internal combustion engines which is arranged in the suction pipe thereof and includes at least two heater elements adapted to be heated and connected with the fuel supply system, characterized in that less fuel is supplied to one heater element while more fuel is supplied to the other heater element, said one heater element being arranged in the plug on the side facing the internal combustion engine.

Claim 28

A flame heater-plug for air-compressing internal combustion engines which is arranged in the suction pipe thereof and includes at least two heater elements adapted to be heated and connected with the fuel supply system, characterized in that less fuel is supplied to one heater element while more fuel is supplied to the other heater element, said one heater element being arranged in the plug on the side facing the internal combustion engine.

Claim 29

A flame heater-plug for air-compressing internal combustion engines which is arranged in the normal path of flow of the air within the suction pipe thereof and includes heater means adapted to be heated and connection with the fuel supply system, characterized in that the part of the heater plug projecting into the suction pipe is surrounded by a protective cap means open on the side leading toward the internal combustion engine and substantially closed toward the opposite side facing the inflowing air to stabilize the operation of the plug, in that the heater means includes at least one heater element, and in that the protective cap means is fixedly secured at the walls of the suction pipe in such a manner that the open side of the protective cap means is on the side leading toward the internal combustion engine, said protective cap means surrounding a bore intenDed for the installation of the plug so that the protective cap means is always in its correct position regardless of the position of the installed plug.

Claim 30

A flame heater-plug for air-compressing internal combustion engines which is arranged in the normal path of flow of the air within the suction pipe thereof and includes heater means adapted to be heated and connection with the fuel supply system, characterized in that the part of the heater plug projecting into the suction pipe is surrounded by a protective cap means open on the side leading toward the internal combustion engine and substantially closed toward the opposite side facing the inflowing air to stabilize the operation of the plug, in that the heater means includes at least one heater element, and in that the protective cap means is fixedly secured at the walls of the suction pipe in such a manner that the open side of the protective cap means is on the side leading toward the internal combustion engine, said protective cap means surrounding a bore intenDed for the installation of the plug so that the protective cap means is always in its correct position regardless of the position of the installed plug.

Claim 31

A flame heater-plug for air-compressing internal combustion engines which is arranged in the suction pipe thereof and includes heater means adapted to be heated and connected with the fuel supply system, characterized in that the part of the heater-plug projecting into the suction pipe is surrounded by a protective cap means open on the side leading toward the internal combustion engine and substantially closed toward the opposite side, and in that the heater means in said plug includes several heater elements, less fuel being adapted to be supplied to a first one of said heater elements while more fuel is adapted to be supplied to several second heater elements.

Claim 32

A flame heater-plug for air-compressing internal combustion engines which is arranged in the suction pipe thereof and includes heater means adapted to be heated and connected with the fuel supply system, characterized in that the part of the heater-plug projecting into the suction pipe is surrounded by a protective cap means open on the side leading toward the internal combustion engine and substantially closed toward the opposite side, and in that the heater means in said plug includes several heater elements, less fuel being adapted to be supplied to a first one of said heater elements while more fuel is adapted to be supplied to several second heater elements.