Knock detection method and apparatus with dual integration windo

Details Knock detection method and apparatus with dual integration windo Knock detection method and apparatus with dual integration windo

1994-06-30

1996-07-23

Chapman, John E.

Measuring and testing

Engine detonation

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

G01L 2322

Patent

active

055378552

ABSTRACT:
A knock detection method and apparatus integrates a knock sensor signal (107) over a first period and provides a first integrated knock sensor signal (119), and integrates the knock sensor signal (107) over a second period and provides a second integrated knock sensor signal (139). A knock indication (131) is provided dependent on an amplitude of the first integrated knock sensor signal (119) and an amplitude of the second integrated knock sensor signal (139) and independent of the influence of the variations of the knock sensor (101) potential sensor to sensor gain variation.

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patent: 5092160 (1992-03-01), Ueda et al.
patent: 5408863 (1995-04-01), Sawyers et al.

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