Knock detection device for an internal combustion engine

Details Knock detection device for an internal combustion engine Knock detection device for an internal combustion engine

1992-07-16

1994-12-13

Black, Thomas G.

Boots, shoes, and leggings

36443103, 36443104, 123425, 123479, 123435, 73 35, 73654, F02P 514, F02P 308

Patent

active

053734483

ABSTRACT:
A knock detection device being provided with a plurality of digital filter units, each is designed to cover respective characteristic resonance vibration frequency components inherent to resonance vibration modes due to knocking and including first, second and third digital filters, the first digital filter being tuned to the center frequency of the characteristic resonance vibration frequency component, the second digital filter being tuned to a neighboring lower frequency and the third digital filter being tuned to a neighboring higher frequency. The maximum intensity among the three intensities determined by the first, second and third digital filters is determined as the intensity for the characteristic resonance vibration frequency component and the determined result is fed-back to the digital filter unit to correct the center frequency of the first digital filter to the frequency showing the maximum intensity, whereby the knocking is reliably detected without being affected by such factors as engine operating conditions and secular changes of the engine.

REFERENCES:
patent: Re34234 (1993-04-01), Kuroiwa et al.
patent: 4236491 (1980-12-01), Hattori et al.
patent: 4409816 (1983-10-01), Yamaguchi et al.
patent: 4513716 (1985-04-01), Haraguchi et al.
patent: 4612902 (1986-09-01), Abe et al.
patent: 4843870 (1989-07-01), Citron et al.
patent: 4991553 (1991-12-01), Kurihara et al.
patent: 5170433 (1992-12-01), Elliott et al.
patent: 5230316 (1993-07-01), Ichibara

Affiliated with

Also associated with

Rating

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1197489