Knock sensor

Details Knock sensor Knock sensor

1993-06-11

1995-03-21

Williams, Hezron E.

Measuring and testing

Engine detonation

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

G01L 2322

Patent

active

053985400

ABSTRACT:
A knock sensor for indirect or direct fixing to an internal combustion engine has a housing (10) with a pressure sleeve (11) on the outer side of which a piezoceramic disk, a seismic mass (16), the contact disks (14), and the insulating disks (13) are arranged. The insulating disks (13) or the piezoelectrical disk (15) are or is made slightly electrically conductive so that the voltage spikes which occur due to the pyroelectrical effect can be easily eliminated. In this way, faulty measuring and interference can be avoided in the electrical circuit connected to the knock sensor.

REFERENCES:
patent: 4660409 (1987-04-01), Miyata
patent: 4966031 (1989-06-01), Mochizuki
patent: 4978883 (1990-12-01), Komurasaki

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