21114 マルチ燃料対応舶用ディーゼル機関制御に関する研究 : 外付けセンサによる燃焼モニタリング : 3気筒舶用ディーゼル機関での実験(OS11 環境に優しいエンジン技術(4),オーガナイズドセッション)

概要

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In the study, the wire strain gauge, the piezoelectric type strain gauge and the acceleration pickup are selected as indirect sensors of the cylinder pressure and installed on the head bolt of the marine Diesel engine. As the simultaneous measurement results during continue three hundred cycles, it is confirmed that the outputs of both the strain gauge vary with that of the cylinder pressure sensor, and Indicated Mean Effective Pressure (IMEP) can be monitored more than 0.99 of correlation factor without the signal processing to the output. The best signal processing to the output for the maximum cylinder pressure P_<max> and its crank angle θ_<pmax> is the use of digital filter having cut-off frequency 110xf_0 (f_0: the frequency of the crank shaft rotation) with the ten cycles average of the output, as the results of the processing, the correlation factor more than 0.98 can be obtained
2010-03-09