Internal-combustion engines – Combustion chamber means combined with air-fuel mixture...
Patent
1983-03-09
1984-11-13
Cox, Ronald B.
Internal-combustion engines
Combustion chamber means combined with air-fuel mixture...
123435, 73 35, F02P 504
Patent
active
044819242
ABSTRACT:
An engine knock detecting apparatus for sensing knocking occurring in an internal combustion engine. The engine knock detecting apparatus has a vibration sensor for sensing vibration having a vibration component caused by the knocking taking place in the engine and outputting an electric signal corresponding to the vibration. A feed back loop is formed by a first mean level detection circuit which determines and outputs the mean value of the electric signal derived from the vibration sensor, and a gain controller which controls the gain of an amplifier in accordance with the first mean level signal produced by the first mean level detection circuit, such that the amplified signal derived from the amplifier takes a level equal to or above a predetermined level. The amplified signal derived from the amplifier is compared by a comparator with a reference signal which is delivered through a second mean level detection circuit and a reference signal generator. A knocking signal representing the occurrence of engine knock is produced when the level of the reference signal is exceeded by the level of the amplified signal.
REFERENCES:
patent: 4233944 (1980-11-01), Omori
patent: 4276861 (1981-07-01), Kearney
patent: 4282841 (1981-08-01), Takagi
Cox Ronald B.
Toyota Jidosha & Kabushiki Kaisha
LandOfFree
Engine knock detecting apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Engine knock detecting apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Engine knock detecting apparatus will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2355503