Vibration detecting device

Details Vibration detecting device Vibration detecting device

1988-09-26

1989-09-26

Chapman, John

Measuring and testing

Engine detonation

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

310329, G01L 2322

Patent

active

048690953

ABSTRACT:
A vibration detecting device especially intended for detecting the knocking of an internal combustion engine. Various components inclusive of a piezoelectric element are mounted around a cylindrical portion of a bush with an insulating tube disposed therebetween. An insulating tube fills the space between the cylindrical portion and the components that are arranged to be aligned with the cylindrical portion. The outermost part of the tube serves as a reference surface in arranging the components to be mounted in alignment with the cylindrical portion during assembly, thereby allowing them to be mounted precisely in alignment with the cylindrical portion.

REFERENCES:
patent: 4373378 (1983-02-01), Fujishiro et al.
patent: 4374472 (1983-02-01), Nishimura
patent: 4483181 (1984-11-01), Maekawa et al.
patent: 4524625 (1985-06-01), Takeuchi
patent: 4660409 (1987-04-01), Miyata et al.
patent: 4742262 (1988-05-01), Ferry

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