Integrated spark plug-combustion pressure sensor

Details Integrated spark plug-combustion pressure sensor Integrated spark plug-combustion pressure sensor

1978-12-13

1979-10-02

Woodiel, Donald O.

Measuring and testing

Fluid pressure gauge

Combined

73115, 73754, 73DIG4, G01L 908

Patent

active

041693884

ABSTRACT:
An integrated spark plug-combustion pressure sensor capable of extended use in normal operation of an automobile. Thermally conductive gas sealing means are provided between the plug insulator and shell. A piezo-electric pressure sensor element is positioned to sense combustion pressure through changes in the stress of plug shell and is enclosed as an integral part of the plug for protection against the harsh engine environment.

REFERENCES:
patent: 2068744 (1937-01-01), Gutzke
patent: 3020763 (1962-02-01), Davis

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