Engine knock sensor

Details Engine knock sensor Engine knock sensor

2007-12-11

2007-12-11

Kwok, Helen (Department: 2856)

Measuring and testing

Engine detonation

Specific type of detonation sensor

C310S329000

Reexamination Certificate

active

11369249

ABSTRACT:
The piezoelectric element of an engine knock sensor is held between upper and lower ring-shaped bases by two identical clips that extend through the piezoelectric element and engage each base. Each clip has a ring-shaped flange engaging a groove circumscribing the inner wall of one of the bases, with the flanges of the clips engaging opposite bases. Also, each clip has three legs that engage a groove in the opposite base. Each clip leg is disposed between two legs of the other clip.

REFERENCES:
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patent: 4441370 (1984-04-01), Sakurada
patent: 4483181 (1984-11-01), Maekawa et al.
patent: 4959993 (1990-10-01), Komurasaki
patent: 4967114 (1990-10-01), Komurasaki et al.
patent: 5329809 (1994-07-01), Sellnau et al.
patent: 6122577 (2000-09-01), Mergenthaler et al.
patent: 6752005 (2004-06-01), Harada et al.

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