Cylinder pressure monitoring system

Details Cylinder pressure monitoring system Cylinder pressure monitoring system

1979-01-29

1980-10-14

Myracle, Jerry W.

Measuring and testing

Vehicle drive train

Rear end

73119A, G01M 1500

Patent

active

042274036

ABSTRACT:
Disclosed is a transducer assembly and diagnostic apparatus for processing an electrical signal which varies with the pressure changes occurring within an engine cylinder. The transducer assembly consists of a U-shaped structure integrally formed in a sandwich arrangement and encompassing a pressure-responsive crystalline element. The assembly is sized such that it substantially encompasses the shank of a spark or glow plug of the engine such that axial forces from within the cylinder excite the transducer through the plug to produce a signal which is processed in an electrical circuit to provide timing or other diagnostic information.

REFERENCES:
patent: 4109518 (1978-08-01), Dooley et al.
patent: 4130013 (1978-12-01), Bailey et al.

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