Engine knock detecting system

Details Engine knock detecting system Engine knock detecting system

1991-05-31

1992-05-26

Wolfe, Willis R.

Internal-combustion engines

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

123435, 73 35, F02P 5145, F02D 4104

Patent

active

051157799

ABSTRACT:
An engine knocking detecting system is disclosed, which comprises an engine vibration sensing device which produces a signal which represents a vibration of an engine; an engine speed sensing device which produces a signal which represents the speed of the engine; parallelly arranged band-pass filters to which the vibration representative signal from the engine vibration sensing device is fed simultaneously, the band-pass filters having respective pass-bands which are not overlapped; and a knocking judging device for judging whether the engine is under knocking or not by analyzing the output signals issued from the band-pass filters and the engine speed representative signal from the engine speed sensing device.

REFERENCES:
patent: 4364260 (1982-12-01), Chen et al.
patent: 4492109 (1985-01-01), Ozaki et al.
patent: 4899710 (1990-02-01), Takahashi
patent: 4943776 (1990-07-01), Polito et al.

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