Oscillation sensor, particularly combustion engine knock sensor

Details Oscillation sensor, particularly combustion engine knock sensor Oscillation sensor, particularly combustion engine knock sensor

1979-01-16

1981-06-30

Ruehl, Charles A.

Measuring and testing

Engine detonation

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

73651, G01L 2322

Patent

active

042755867

ABSTRACT:
In order to detect the occurrence of engine knock (pinging, detonation), a piezoelectric sensor is mounted on the engine in a location where the oscillations due to engine knock are readily transmitted. The detector is a strip or strips of piezoelectric material mounted in cantilevered configuration in a clamping device. An advantageous location for the sensor is a bore within one of the cylinder head bolts of the engine. A variety of embodiments is described including the provision of seals for permitting the introduction of a damping fluid in the receiver bore for the sensor.

REFERENCES:
patent: 1948104 (1934-02-01), Firestone et al.
patent: 3093710 (1963-06-01), Ten Eyck
patent: 3113223 (1963-12-01), Smith et al.
patent: 3393557 (1968-07-01), Brown et al.
patent: 4161665 (1979-07-01), Buck et al.

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