Device for controlling fuel injection of an internal combustion

Details Device for controlling fuel injection of an internal combustion Device for controlling fuel injection of an internal combustion

1994-01-21

1996-03-12

Dolinar, Andrew M.

Internal-combustion engines

Charge forming device

Fuel injection system

F02D 4106

Patent

active

054977525

ABSTRACT:
A device for controlling fuel injection of an internal combustion engine which is capable of preventing the A/F ratio from becoming over-rich immediately after the engine is started to decrease the emission of hydrocarbons. An intake pipe is connected to a four-cylinder spark ignition-type gasoline engine, and an injector for injecting fuel is disposed in the intake pipe for each of the cylinders of the engine. An electronic control unit (ECU) controls fuel injection through the injector in an amount corresponding to the running condition of the engine. When the number of revolutions of the engine reaches a predetermined value (e.g., 500 to 1000 rpm), the ECU judges that complete combustion has occurred and then decreases the amount of fuel injected through the injector during a period in which the amount of fuel adhered to the wall surfaces is excessive.

REFERENCES:
patent: 4184460 (1980-01-01), Harada et al.
patent: 4438748 (1984-03-01), Ikeura et al.

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