Internal-combustion engines – Combustion chamber means combined with air-fuel mixture...
Patent
1991-04-24
1992-05-05
Nelli, Raymond A.
Internal-combustion engines
Combustion chamber means combined with air-fuel mixture...
123435, F02P 514
Patent
active
051098202
ABSTRACT:
A knock control apparatus and method for an internal combustion engine serves to simplify hardware components employed to reduce the load thereon, and hence minimize the cost of manufacture while improving the freedom of control of an engine control unit. Vibrations of a cylinder are sensed to generate a vibration level which is then averaged to provide an average value. A knock determination threshold is generated based on the average value. The vibration level is compared with the threshold for determining whether knock is taking place in the cylinder. When the vibration level exceeds the threshold, engine control parameters are controlled in a direction to suppress knocking in the cylinder. Preferably, the averaging of the vibration level comprises averaging the vibration level to provide a first average value, and averaging the first average value to provide a second average value. Preferably, the generation of a vibration level comprises generating a first vibration level and a second vibration level at a first and a second reference crank position, respectively. A knock determination threshold is generated based on the second vibration level. A knock determination signal is generated based on a difference between the first vibration level and the knock determination threshold.
REFERENCES:
patent: 4750103 (1988-06-01), Abo et al.
patent: 4760828 (1988-08-01), Shimada et al.
patent: 4766545 (1988-08-01), Nagai
patent: 4770144 (1988-09-01), Sakakibara et al.
patent: 4882695 (1989-11-01), Mieno et al.
patent: 4892074 (1990-01-01), Iriyama
patent: 4951630 (1990-08-01), Iwata
patent: 4969440 (1990-11-01), Murakami et al.
patent: 4993387 (1991-02-01), Sakakibara et al.
Hashimoto Atsuko
Iwata Toshio
Matsuoka Atsuko
Mitsubishi Denki K.K.
Mitsubishi Jidosha Kogyo K.K.
Nelli Raymond A.
LandOfFree
Apparatus and method for controlling knocking in an internal com does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Apparatus and method for controlling knocking in an internal com, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus and method for controlling knocking in an internal com will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1405614