Engine control apparatus

Details Engine control apparatus Engine control apparatus

1989-06-14

1990-06-05

Wolfe, Willis R.

Internal-combustion engines

Charge forming device

Fuel injection system

123479, 123198DB, F02D 4122, F02D 1702

Patent

active

049304810

ABSTRACT:
An engine control apparatus comprises a cylinder discrimination sensor for generating cylinder discrimination signal, a crank angle sensor for generating crank angle signal, a fuel injection valve provided in each cylinder of the engine, an ignition coil provided in correspondence to each and every cylinder, a flip-flop circuit for detecting a state of misfire in each cylinder on the basis of a state of signal of said ignition coil, and a micro-computer for receiving the cylinder discrimination signal, the crank angle signal and the output signal of the flip-flop circuit to detect that a state of misfiring has occured continuously at the same cylinder and for closing the fuel injection valve corresponding to the cylinder where the misfiring has occured.

REFERENCES:
patent: 4006718 (1977-02-01), Konomi
patent: 4024850 (1977-05-01), Peter et al.
patent: 4117807 (1978-10-01), Barnard
patent: 4366794 (1983-01-01), Hachiga et al.
patent: 4378771 (1983-04-01), Sawada et al.
patent: 4469071 (1984-09-01), Bassi et al.
patent: 4499876 (1985-02-01), Yamamoto
patent: 4589401 (1986-05-01), Karim et al.

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