Spark plug and optical combustion sensor combination

Details Spark plug and optical combustion sensor combination Spark plug and optical combustion sensor combination

1982-09-29

1985-03-19

Moore, David K.

Electric lamp and discharge devices

Spark plugs

With transparent part

313144, H01T 1348

Patent

active

045061866

ABSTRACT:
To facilitate assembly of a central glass rod in an optical sensor-spark plug combination, electrical energy is conducted to the spark end of the combination by a high temperature resistant tube or sleeve 11 surrounding a central glass rod 2 for only a limited portion of the entire length; electrical energy is conducted to the high temperature resistant sleeve 11, which forms the sparking end of the spark plug, from a terminal connector 1 by a packing 10 of electrically conductive powder, which may include radio noise suppression resistance characteristics, held in place by a compression spring 8, in electrical connection with the terminal connector 1; or by a separate tube 12 surrounding the glass rod 1, and of non-heat resistant material, the glass rod 1 being separated from the other tube 12 by an adhesive which, at the connecting end of the spark plug, need not be high temperature resistant.

REFERENCES:
patent: 2798980 (1957-07-01), Beardslee, Jr.
patent: 4393687 (1983-07-01), Muller et al.

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