Optical combustion sensor, particularly for use with internal co

Details Optical combustion sensor, particularly for use with internal co Optical combustion sensor, particularly for use with internal co

1982-02-01

1983-11-01

Gill, James J.

Measuring and testing

Engine detonation

Combustion signal compared to reference signal varied by a...

313129, G01L 2322

Patent

active

044124465

ABSTRACT:
To provide for improved cleaning of an optical combustion sensor, particularly to determine knocking in an internal combustion (IC) engine, a pick-up element made of glass, glass-coated or covered metal or the like, and, for example, hollow inside and filled with a vaporizable and condensable medium to define a heat pipe, has a sensing end portion which is formed with a mushroom-shaped enlarged head (14). The unit may be combined with the functions of a spark plug by extending a conductor therethrough, making the pick-up of electrically conductive glass or ceramic, placing a metal foil or other conductor at the outside, separated from the metallic housing by an insulating sleeve or the like.

REFERENCES:
patent: 2841979 (1958-07-01), Harbert
patent: 3517247 (1970-06-01), Szilagyi

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