| 摘要 |
PROBLEM TO BE SOLVED: To provide a pressure sensor capable of easily measuring pressure, which is very compact, light in weight and has a simple construction, high durability, and low in price, and requiring no additional device such as cooling device even in s high temperature environment. SOLUTION: This pressure sensor can directly measure combustion pressure P of an internal combustion engine generated by burning fuel mixture of gasificated gas at a high temperature of 1000 deg.C or higher without additional device such as cooling device and output a charge signal which is in proportion to the pressure at speed of 1μs, so that the signal is converted into a voltage signal by a charge amplifier and it signal value is read out by an induced unit Pa of the pressure and at the same time combustion waveform for determining condition of combustion (normal or abnormal) can be monitored by a self diagnostic system.
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