Spark plug pressure sensor

Details Spark plug pressure sensor Spark plug pressure sensor

1989-02-22

1990-03-20

Myracle, Jerry W.

Measuring and testing

Vehicle drive train

Rear end

73754, G01M 1500

Patent

active

049090712

ABSTRACT:
A spark plug with pressure sensor comprising; a center electrode; an insulator placed to enclose the center electrode to support the electrode; a metallic shell having a diameter-increased portion, a diameter-reduced portion and a male thread portion in turn, the male thread portion being diametrically smaller than the diameter-reduced portion; an annular-shaped pressure sensor inserted into an outer surface of the diameter-reduced portion; an annular flange inserted into the outer surface of the diameter-reduced portion to sandwich the pressure sensor with an overhang portion of the diameter-increased portion; a gasket ring being placed underside of the flange when the metallic shell is screwed through the thread portion to a cylinder block of an engine; the annular flange extending its inner rim to position at a central side of the pressure sensor, and welded to the metallic shell.

REFERENCES:
patent: 4686861 (1987-08-01), Morii

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