Knock control apparatus for internal combustion engines

Details Knock control apparatus for internal combustion engines Knock control apparatus for internal combustion engines

1989-10-17

1990-11-06

Wolfe, Willis R.

Internal-combustion engines

Combustion chamber means combined with air-fuel mixture...

F02P 514

Patent

active

049677101

ABSTRACT:
A knock control apparatus of ignition timing control type according to the present invention comprises, as one aspect thereof, a knock control level increasing means for augmenting a knock phenomenon suppressing function, so that, when the knock interval is short, the output characteristic of the integrating means is increased to raise the control level for suppressing the knock generating element in each cylinder of the engine, and that the integrating means output characteristic is invalidated when the condition of the internal combustion engine reaches the normal operating state. The knock control apparatus comprises, as another aspect thereof, a reset pulse generation circuit for resetting the voltage from the above integrator to zero at the interval of more than a predetermined number of times the ignition cycle and in synchronism with the ignition signal.

REFERENCES:
patent: 4377999 (1983-03-01), Komurasaki et al.
patent: 4393837 (1983-07-01), Sugihara et al.
patent: 4530328 (1985-07-01), Komurasaki et al.
patent: 4606316 (1986-08-01), Komurasaki
patent: 4607602 (1986-08-01), Komurasaki et al.
patent: 4788957 (1988-12-01), Komurasaki
patent: 4793310 (1988-12-01), Komurasaki

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