Internal combustion engine controller

Details Internal combustion engine controller Internal combustion engine controller

1997-07-09

1998-08-18

Nelli, Raymond A.

Internal-combustion engines

Charge forming device

Fuel injection system

F02P 500

Patent

active

057945926

ABSTRACT:
In an internal combustion engine controller, a crank angle signal SGTP includes pulses corresponding to first and second reference crank angles and a cylinder identification signal SGCP includes a pulse having a phase difference to the crank angle signal, the pulse number of a specific cylinder from the second reference crank angle to the first reference crank angle is different from those of other cylinders, a control/arithmetic operation circuit includes means for calculating control timings, means for counting the pulse number of the cylinder identification signal, means for outputting a cylinder identification flag FC by assessing a cylinder identifying state based on a count value CP and a previous count value CPO and means for reflecting the cylinder identification flag to the output state of drive signals and control reflection means prohibits the output of the drive signals when the cylinder identification flag is abnormal. With this arrangement, the internal combustion engine controller is capable of avoiding the erroneous control of the internal combustion engine can be obtained without an increase in a cost.

REFERENCES:
patent: 5584274 (1996-12-01), Fukui et al.
patent: 5632246 (1997-05-01), Fukui et al.
patent: 5671714 (1997-09-01), Fukui et al.
patent: 5715791 (1998-02-01), Fukui et al.

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