Knock detector for internal combustion engine

Details Knock detector for internal combustion engine Knock detector for internal combustion engine

1980-06-17

1982-01-26

Gill, James J.

Measuring and testing

Engine detonation

Combustion signal compared to reference signal varied by a...

G01M 2322

Patent

active

043122140

ABSTRACT:
A knock detector for an internal combustion engine comprises a resonantly tuned knock sensor mounted on the engine, a variable gain amplifier for amplifying the signal from the knock sensor, knock and reference channels which are operatively coupled with the output of the variable gain amplifier to develop respective knock and reference channel signals, and a comparator for comparing the signal of one channel against the signal of the other channel. The gain of the variable gain amplifier, in general, is an inverse function of engine speed. The amplified signal from the variable gain amplifier is gated to a peak detector of the reference channel circuit during absence of any appreciable engine knock to develop a reference signal representing background noise. The knock channel detects peaks of the amplifier output signal, and the comparator compares the two peak detected signals to provide a knock signal when a predetermined relationship between the two is attained.

REFERENCES:
patent: 3822583 (1974-07-01), Keller et al.
patent: 4279143 (1981-07-01), Gwipand

Affiliated with

Also associated with

Rating

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1662168