Piezoelectric knocking detector for internal combustion engine

Details Piezoelectric knocking detector for internal combustion engine Piezoelectric knocking detector for internal combustion engine

1979-01-09

1980-09-30

Budd, Mark O.

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

310329, H01L 4110

Patent

active

042258022

ABSTRACT:
A knocking detector for an internal combustion engine includes a vibration unit comprising an inertial mass member and springs which are mounted in a housing attached to an engine body. The spring constants of the springs are so selected that the resonant frequency of the vibration unit becomes substantilly equal to the frequency of vibration due to knocking of the engine, and the vibration of the vibration unit is detected and converted into an electric signal.

REFERENCES:
patent: 2411401 (1946-11-01), Welch
patent: 2972006 (1961-02-01), Shoor
patent: 3075098 (1963-01-01), Shoor
patent: 3145311 (1964-08-01), Dickey
patent: 3394275 (1968-07-01), Lippmann
patent: 3819962 (1974-06-01), Ivey et al.
patent: 4110654 (1978-08-01), Paul

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