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US 5,205,120 AGranted
Mixture-compressing internal-combustion engine with secondary-air injection and with air-mass metering in the suction pipe
AssigneeMercedes-Benz AG
InventorsKurt Oblander, Ludwig Fricker, Alexander Anderson, Hans-Karl Weining, Selcuk Geldec, Ralf Krukenberg, Gerhard Fingerle
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Abstract
The invention relates to a mixture-compressing internal-combustion engine with secondary-air injection and with air-mass measurement as well as with an injection valve sequential fuel injection and air assistance, the air line provided for air assistance being equipped with a shut-off valve opening in the starting and the warmup phase of the internal-combustion engine.
Claims2
Mixture-compressing internal-combustion engine comprising:
- a suction pipe provided with a throttle flap and an air-mass meter and opening to an engine cylinder inlet valve,
- a secondary air line leading to an exhaust line in bypassing relationship to the suction pipe,
- a secondary-air cut-off valve in the secondary air line,
- secondary-air cut-off valve control apparatus for opening the secondary-air cut-off valve during an engine warming-up phase,
- an injection valve for sequential fuel injection into the suction pipe,
- a supercharger to provide a supercharged internal combustion engine;
- and
- wherein the secondary-air line leading to the exhaust line via the secondary-air cut-off valve branches-off from the suction pipe between the supercharger and the air mass meter
- wherein, downstream of the air mass meter, an additional air line connected with the injection valve branches-off from the suction pipe.
6 more elements
Mixture-compressing internal-combustion engine comprising:
- a suction pipe provided with a throttle flap and an air-mass meter and opening to an engine cylinder inlet valve,
- a secondary air line leading to an exhaust line in bypassing relationship to the suction pipe,
- a secondary-air cut-off valve in the secondary air line,
- secondary-air cut-off valve control apparatus for opening the secondary-air cut-off valve during an engine warming-up phase,
- an injection valve for sequential fuel injection into the suction pipe,
- a supercharger located downstream of the air mass meter to provide a supercharged internal combustion engine,
- wherein the secondary air-line is equipped with the secondary-air cut-off valve and branches-off from the suction pipe between the superflanges and the throttle flap.
4 more elements
Dependencies are inferred from the claim text.