Knocking detecting device for an internal combustion engine

Details Knocking detecting device for an internal combustion engine Knocking detecting device for an internal combustion engine

2007-11-27

2009-12-01

Kwok, Helen C. (Department: 2856)

Measuring and testing

Engine detonation

Specific type of detonation sensor

C073S035040

Reexamination Certificate

active

07624619

ABSTRACT:
The present invention relates to a knocking detecting device for an internal combustion engine, for controlling a timing at which an ignition coil is actuated according to a knocking occurrence intensity, the knocking detecting device including the signal processing module for processing a signal attributable to knocking occurring in the operation of the internal combustion engine to determine a knocking occurrence intensity, in which the signal processing module includes: signal detecting means for detecting a signal attributable to knocking; frequency intensity calculating means for selecting a plurality of frequencies extracted from an output of the signal detecting means to calculate a frequency intensity; and knocking intensity determining means for finally determining that knocking occurs in a case where it is determined that at least two primary determination results of among a plurality of primary knocking determination results based on the outputs of the frequency intensity calculating means.

REFERENCES:
patent: 4899710 (1990-02-01), Takahashi
patent: 6789409 (2004-09-01), Tanaya
patent: 7424820 (2008-09-01), Iwade et al.
patent: 7478624 (2009-01-01), Kaneko et al.
patent: 01-178770 (1989-07-01), None
patent: 04-076249 (1992-03-01), None
patent: 05-033716 (1993-02-01), None
patent: 2684611 (1998-02-01), None
patent: 2004-138032 (2004-05-01), None

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