Electronic fuel injection control device for internal combustion

Details Electronic fuel injection control device for internal combustion Electronic fuel injection control device for internal combustion

1991-10-21

1992-11-17

Wolfe, Willis R.

Internal-combustion engines

Charge forming device

Fuel injection system

F02D 4106

Patent

active

051634082

ABSTRACT:
An electronic fuel injection device for an internal combustion engine, wherein operating conditions of the internal combustion engine is detected; a fuel injection value for the internal combustion engine is calculated based upon the detected operating conditions; the calculated fuel injection value is corrected by a fuel correction value during engine start which is stored in a memory; a fuel injection pulse for a fuel injector corresponding to the corrected fuel injection value during engine start is generated; a start time of the internal combustion engine started by the fuel injection determined by generated fuel injection pulse; a start time rank for the detected start time is assigned depending upon the length of the start time; a new fuel correction value is calculated by summing up variables of factors in Table 1 which influence the air/fuel ratio during engine start and are determined for every start time rank based upon the assigned start time rank; the fuel correction value used for the present engine start is renewed by adding the calculated new fuel correction value during engine start and is stored in the memory for use in the next engine start.

REFERENCES:
patent: 4705004 (1987-11-01), Takahashi et al.
patent: 4844039 (1989-07-01), Osaki et al.
patent: 4875452 (1989-10-01), Hara et al.
patent: 5027779 (1991-07-01), Nishiyama
patent: 5092301 (1992-03-01), Ostdiek

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