Combustion condition sensor

Details Combustion condition sensor Combustion condition sensor

1982-08-23

1984-06-05

Myracle, Jerry W.

Measuring and testing

Test stand

For engine

73 35, G01M 1500

Patent

active

044520727

ABSTRACT:
To protect the light guide element of a combustion sensor, for example combined with a spark plug, and extending through a bore in the center electrode thereof against high temperatures and attach due to environmental conditions occurring within the combustion chamber, a protective element of a high temperature resistant, light transmitting ceramic, preferably alpha-crystalline aluminum oxide is located at the combustion end portion, for example in form of a disc 14, held in position by a turned-over flange of the end portion of the center electrode 13 of a spark plug-sensor combination.

REFERENCES:
patent: 3678741 (1972-07-01), Burley
patent: 3978720 (1976-09-01), Ford

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