Sparkplug for internal combustion engine, has pressure sensor with piezoelectric unit, which is arranged between insulator and housing and includes contact unit that is guided between insulator and housing and arranged in insulator

摘要

The sparkplug (1) has a housing (3) connected with an insulator (2) and including a fixing region for fixing the sparkplug in an internal combustion engine. A pressure sensor with a piezoelectric unit (7) is provided, and the piezoelectric unit is in contact with the insulator and is arranged between the insulator and the housing. An electrical contact unit of the piezoelectric unit is guided between the insulator and the housing and arranged in the insulator. The piezoelectric unit is formed in a ring shape.