Fiber optic misfire, knock and LPP detector for internal combust

Details Fiber optic misfire, knock and LPP detector for internal combust Fiber optic misfire, knock and LPP detector for internal combust

1995-10-16

1998-06-09

Dombroske, George M.

Measuring and testing

Vehicle drive train

Rear end

73705, 73715, 73714, 73756, G01M 1500

Patent

active

057637695

ABSTRACT:
A fiber optic spark plug integrated combustion pressure detector comprises the sensitive sensor head with "snap" action diaphragm to provide the temperature insensitivity to combustion temperature variations. The optical module is integrated into the electrical connector to eliminate open optical interfaces. The "snap" action and special diaphragm shape selectively increase detector knock and misfire discrimination. The pressure sensor can be made spark plug integrated or injected in block cylinder for combustion pressure sensing in engine.

REFERENCES:
patent: 4413509 (1983-11-01), Moser et al.
patent: 4521683 (1985-06-01), Miller
patent: 4760733 (1988-08-01), Tanaka
patent: 4986671 (1991-01-01), Sun et al.
patent: 5275053 (1994-01-01), Wlodarczyk et al.
patent: 5351528 (1994-10-01), Fukui et al.
patent: 5386723 (1995-02-01), Wier
patent: 5390546 (1995-02-01), Wodarczyk
patent: 5446279 (1995-08-01), Hsu

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