| 摘要 |
PROBLEM TO BE SOLVED: To obtain a cylinder internal pressure detecting device, by which fitting working can be facilitated and which is good in noise proof characteristic and maintainability. SOLUTION: A cylinder internal pressure sensor 6 formed like a washer is interposed between the fuel injection valve fitting hole bearing surface of a cylinder head 3 and a fuel injection valve 4. The cylinder internal pressure sensor 6 detects the cylinder internal pressure changed by the combustion and explosion of air-fuel mixture in a cylinder 1 directly or according to the infinitesimal displacement of the fuel injection valve 4, and the detection signal is transmitted through a lead wire to an external measuring circuit to be used for the combustion limit control of an internal combustion engine and accidental fire diagnosis. |
