Fuel injection control system for internal combustion engine

Details Fuel injection control system for internal combustion engine Fuel injection control system for internal combustion engine

1992-05-05

1993-05-25

Argenbright, Tony M.

Internal-combustion engines

Charge forming device

Fuel injection system

12317916, F02D 4106, F02M 3100

Patent

active

052130827

ABSTRACT:
A fuel injection control system for an internal combustion engine equipped with a heater for heating an air-fuel mixture in cold engine start. In the system, the timing to cease injection is first obtained by the coolant temperature and the engine load. The value is then deferred by an amount if the heater is turned on. The amount increases as the heater on-time increases. Then an injection period is added to the timing to cease injection and another timing to commence injection is determined. Thus, the injection timing is deferred if an air-fuel mixture is heated so as to minimize the residence time of the heated fuel. This ensures that the fuel will be quickly drawn to the cylinder to be burnt completely and the composition of the gas is thus improved.

REFERENCES:
patent: 5044331 (1991-09-01), Suga et al.

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