Cylinder pressure transmitter for an internal combustion engine

Details Cylinder pressure transmitter for an internal combustion engine Cylinder pressure transmitter for an internal combustion engine

1983-12-15

1988-08-30

Budd, Mark O.

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

H01L 4108

Patent

active

047679603

ABSTRACT:
A cylinder pressure transmitter has piezoelectric means to provide an electrical signal corresponding to pressure in a cylinder of an automotive internal combustion engine during engine operation and has electronic means to amplify the signal for transmission to computer control means for use in regulating spark advance to improve engine efficiency and performance and reduce engine knocking. The pressure transmitter has a generally cylindrical body having a chamber open at both ends for attachment to an engine cylinder, has a diaphragm secured over one end of the chamber, and has the piezoelectric means held against the diaphragm with a selected preload compressive force by backing means which are threadedly engaged with the body inside the chamber for adjustment to provide the desired force.

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patent: 3857287 (1974-12-01), Sonderegger et al.
patent: 4021688 (1977-05-01), Kudinov et al.
patent: 4286687 (1981-09-01), Fiske, Jr.

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