Knock control system for internal combustion engine

Details Knock control system for internal combustion engine Knock control system for internal combustion engine

1989-06-13

1991-02-19

Argenbright, Tony M.

Internal-combustion engines

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

123435, F02P 515

Patent

active

049933876

ABSTRACT:
A knock control system for the internal combustion engine is disclosed in which a knock intensity value V is detected from a signal produced by a knock sensor, a cumulative percentage point V.sub.P of distribution of a substantially logarithmic conversion value of the knock intensity value V is detected, a value S corresponding to the standard deviation of the substantially logarithmic conversion value is detected, and a knock decision level V.sub.KD is prepared on the basis of V.sub.P and S, thereby controlling knock control factors such as ignition timing and air-fuel ratio. The control system further comprises a device for deciding whether a predetermined period has passed after the engine enters specified operating conditions, a device for averaging knock intensity values, and an update quantity setting device for increasing the unit quantity of updating the averaging device and/or the cumulative percentage point detection device only while the predetermined period has not passed.

REFERENCES:
patent: 4347820 (1982-09-01), Deleris
patent: 4596217 (1986-06-01), Bonitz et al.
patent: 4617895 (1986-10-01), Sakakibara et al.
patent: 4699106 (1987-10-01), Haraguchi et al.
patent: 4711212 (1987-12-01), Haraguchi et al.
patent: 4711213 (1987-12-01), Sakakibara et al.
patent: 4711214 (1987-12-01), Sakakibara et al.
patent: 4777920 (1988-10-01), Oshiage et al.

Affiliated with

Also associated with

Rating

Knock control system for internal combustion engine does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Knock control system for internal combustion engine, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Knock control system for internal combustion engine will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1135167