Piezoelectric pressure measuring instrument

Details Piezoelectric pressure measuring instrument Piezoelectric pressure measuring instrument

1988-05-12

1990-02-06

Woodiel, Donald O.

Measuring and testing

Vehicle drive train

Rear end

73714, 73754, 73761, 73DIG4, 310338, G01L 908, G01M 1500

Patent

active

048980242

ABSTRACT:
A pressure measuring instrument for the measurement of the combustion chamber pressure in a cylinder of an internal combustion engine, comprises a piezoelectric pressure sensor. The sensor includes an annular disk-like electrode with an output terminal, a piezoelectric element in contact with said electrode, a pair of annular pressure acting members having interposed therebetween said electrode and said piezoelectric element, and a lead. The piezoelectric pressure sensor is disposed between a first wall on a cylinder head and a second wall of a spark plug.

REFERENCES:
patent: 2773388 (1956-12-01), Prosser
patent: 3505862 (1970-04-01), List et al.
patent: 4566316 (1986-01-01), Takeuchi
patent: 4602506 (1986-07-01), Sawamoto et al.
patent: 4686861 (1987-08-01), Morii

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