Engine knock sensor using piezoelectric rod oscillator

Details Engine knock sensor using piezoelectric rod oscillator Engine knock sensor using piezoelectric rod oscillator

1979-07-26

1981-12-08

Budd, Mark O.

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

310329, H01L 4108

Patent

active

043050131

ABSTRACT:
In order to provide a unitary, rugged and simplified engine knock sensor assembly for internal combustion engines, which is readily tunable after manufacture to particular frequency characteristics of a given engine, the invention provides a cantilevered bending oscillator which is clamped together with a suitable electrical contact in an axial channel of a metallic cylindrical socket. The radial clamping forces are permanently provided by deformation of the socket material, for example by mortising, or other dimensional changes of the socket material. A number of embodiments is presented. The invention also includes a method for simultaneously producing two separate electrical contacts from a single contact element.

REFERENCES:
patent: 2203332 (1940-06-01), Kinsley
patent: 3004177 (1961-10-01), Sobel et al.
patent: 3093710 (1963-06-01), Eyck
patent: 3109153 (1963-10-01), Rodeck
patent: 3313891 (1967-04-01), Wood
patent: 3500451 (1970-03-01), Yanoo
patent: 3790827 (1974-02-01), Brunet et al.

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