INTERNAL COMBUSTION ENGINE COMBUSTION PRESSURE DETECTION METHOD AND INTERNAL COMBUSTION ENGINE COMBUSTION PRESSURE DETECTOR

PROBLEM TO BE SOLVED: To provide an internal combustion engine combustion pressure detection method and an internal combustion engine combustion pressure detector capable of highly accurately and simply detecting a combustion pressure using a vibration detection sensor.SOLUTION: An internal combustion engine combustion pressure detector and an internal combustion engine combustion detection method are configured to calculate an output ratio of a reference output signal of a vibration detection sensor to a reference combustion pressure signal of a combustion pressure sensor in advance, and to estimate a combustion pressure signal by reflecting the output ratio calculated in advance in an actual output signal of the vibration detection sensor. With this configuration, it is possible to highly accurately and simply detect the combustion pressure signal since the combustion pressure signal is estimated while reflecting the output ratio calculated in advance in the output signal of the vibration detection sensor. 【課題】振動検出センサを用いて精度良くしかも簡単な方法で燃焼圧を検出することができる内燃機関の燃焼圧検出方法及び燃焼圧検出装置を提供することにある。【解決手段】基準となる燃焼圧検出センサの燃焼圧信号と基準となる振動検出センサの出力信号の出力比を予め求めておき、実振動検出センサの実際の出力信号に予め求めておいた出力比を反映して燃焼圧信号を推定する構成とした。これによれば、振動検出センサの出力信号を予め求めた出力比を用いて燃焼圧信号を推定するため、精度良くしかも簡単に燃焼圧信号を検出することができるものである。【選択図】図６