Engine combustion chamber pressure sensing.

摘要

An engine (10) mounted combustion chamber pressure sensor (40) is arranged with a body (42) mounted in an external wall (34), such as of the cylinder head (16), and a probe (47) engaging a combustion chamber (20) defining wall (18) to provide direct indication of combustion pressure caused movements of the chamber defining wall with respect to the external wall, thus providing direct combustion pressure signals usable for indicating or control purposes.