Combustion pressure sensor

Details Combustion pressure sensor Combustion pressure sensor

2007-06-20

2009-12-01

Williams, Hezron (Department: 2856)

Measuring and testing

Engine detonation

Specific type of detonation sensor

Reexamination Certificate

active

07624620

ABSTRACT:
A combustion pressure sensor for detecting a combustion pressure in a combustion chamber of an engine is disclosed as having a housing mounted to an engine head in a gastight structure, a pressure sensor carried on the housing at a base end portion thereof, a transfer member having a pressure-receiving portion exposed to the combustion chamber to be axially slidable in the housing to transfer a combustion pressure from the combustion chamber to the pressure sensor, and a seal member disposed between the pressure-receiving portion of the transfer member and the housing in a gastight sealing structure to block an intrusion of combustion gas from the combustion chamber into the housing. The seal member includes a flexible portion with low rigidity that can stretch and absorb load acting on the pressure sensor when mounting the housing onto an engine cylinder.

REFERENCES:
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patent: 2005-090954 (2005-04-01), None
German Office Action dated Oct. 7, 2008, issued in counterpart German Application No. 102007000337.6 with English translation.

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