Optical combustion event sensor structure particularly knock sen

Details Optical combustion event sensor structure particularly knock sen Optical combustion event sensor structure particularly knock sen

1982-02-01

1984-05-08

Gill, James J.

Measuring and testing

Engine detonation

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

356 44, 374144, G01L 2322

Patent

active

044467230

ABSTRACT:
A light guide element, secured in a spark plug-like housing and positioned, for example, within a metallic tube forming a spark plug connector, is coated at the end facing the combustion chamber with a light-impervious material viz: graphite, the graphite emitting radiation upon influence of heat arising within the combustion chamber, which radiation is transmitted to the optical pick-up for subsequent photo-electric evaluation thereof. The optical pick-up is, for example, a quartz glass rod coupled to a light guide cable, or directly coupled to an opto-electrical transducer.

REFERENCES:
patent: 1560510 (1925-11-01), Hirsch
patent: 4092863 (1978-06-01), Turner
patent: 4265206 (1981-05-01), Garcea
"Fiber Optic Probe . . . "by Holmes from Review of Scientific Instruments, May 1979, pp. 662-663.

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