Apparatus and method for injecting fuel in cylinder injection ty

Details Apparatus and method for injecting fuel in cylinder injection ty Apparatus and method for injecting fuel in cylinder injection ty

1997-12-17

1999-07-20

Dollnar, Andrew M.

Internal-combustion engines

Combustion chamber means combined with air-fuel mixture...

Having a single combustible mixture inlet combined with...

123430, 123295, F02D 4106, F02B 1100

Patent

active

059244054

ABSTRACT:
An improved apparatus and method for controlling fuel injection in an internal combustion engine. The engine includes main-injection valves for directly injecting fuel into corresponding combustion chambers and a sub-injection valve for injecting fuel into a surge tank. The engine is able to perform a plurality of fuel injection modes. An ECU selects a homogeneous fuel injection mode, in which the injected fuel is evenly mixed with air supplied into the combustion chamber, from the plurality of fuel injection modes when the engine is being cranked and fuel injected from the main-injection valve will not adequately vaporize in the combustion chamber. The ECU controls the first and second injection valves according to the selected fuel injection mode. This improves engine starting and increases fuel efficiency.

REFERENCES:
patent: 4408582 (1983-10-01), Merrick
patent: 5052360 (1991-10-01), Ingle, III et al.
patent: 5181493 (1993-01-01), Motoyama et al.
patent: 5251582 (1993-10-01), Mochizuki
patent: 5313920 (1994-05-01), Matsushita

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