Spark plug for measuring the pressure in the combustion chamber of a combustion engine is designed to ensure that combustion gas does not enter the pressure sensor housing

摘要

Spark plug (100) comprises a sensor (300) for measuring the combustion pressure with a housing (200) in which a tubular element (202) is inserted, the sensor being placed in a receptacle (201e) at the end of the housing (201), of which the interior surface is fixed to the exterior surface of the tubular element adjoining the extremity of the housing exposed to combustion gas. The spark plug maintains the housing sealed against air ingress and thus also prevents combustion gas entering the housing.