IGNITION AND PRESSURE MEASUREMENT DEVICE OF AN INTERNAL COMBUSTION ENGINE

摘要

The invention relates to an ignition and pressure measurement device comprising a spark plug (2) having: an outer body (14); a pressure sensor (34) mounted on said outer body (14) and comprising a signal output terminal (38); a supporting tube (4) nested on an upper end of the outer body and carrying electronic means (44) for processing said signal; a conductive element (46) fixed to the output terminal (38) of the pressure sensor and to a terminal for the insertion of the electronic processing means (44); and a metallic envelope (6) surrounding the supporting tube, the electronic processing means and the pressure sensor. Said envelope comprises gripping means (60) for mounting the device in a cylinder head, and is fixed, at the lower end thereof, to the outer body of the spark plug.