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65 New Indicated Mean Effective Pressure Measuring Method and Its Applications
Technical Paper
2002-32-1834
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English
Abstract
IMEP can be generally calculated by numerical integration on the PV diagram. However, this method requires a great number of sampled data per cycle, in order to ensure high accuracy in calculation. The present method is a to use only the primary and secondary components of engine speed from the pressure diagram based on the Fourier series. Owing to this method, calculation errors have become smaller than conventional method even though the number of samples is reduced, and calculation time is also reduced by the conventional method. Using present method, a Fourier series type combustion analyzing system has been developed. Real-time IMEP measurement is allowed in this system owing to the characteristic features described above, and the validity of calculated results is confirmed by comparing the results with the IMEP values obtained by batch processing through the numerical integration.
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Citation
NAGASHIMA, K. and TSUCHIYA, K., "65 New Indicated Mean Effective Pressure Measuring Method and Its Applications," SAE Technical Paper 2002-32-1834, 2002.Also In
References
- SUGIYAMA Gen “Technical Trend in Recent Combustion Diagnostics and Their Future Prospects (in Japanese)” Journal of JSAE 55 3 4 8 2001
- KAWA Tsunemichi et al. “New Technology of Engine Pressure Measurements (in Japanese)” JSME Symposium 99-94 11 13 2000
- NAGASHIMA Keiichi et al. “Development of Fourier Series Type Combustion Analyzing System (in Japanese)” Transactions of JSAE 33 2 April 2002 2002
- TSUCHIYA Kazuo et al. “Simple Method of Measuring of Indicated Mean Effective Pressure” Proceeding of 8 th Internal Combustion Engine Symposium 319 1990
- TSUCHIYA Kazuo et al. “Measurement of Indicated Mean Effective Pressure Based on Harmonic Analysis” Proceeding of 15 th Internal Combustion Engine Symposium 112 1999
- TSUCHIYA Kazuo Tsukasa Sokken Co., Ltd. Japan
- TSUCHIYA Kazuo et al. “Monitoring Method of Indicated Mean Effective Pressure (in Japanese)” JSAE Paper 23 3 1992
- NAGASHIMA Keiichi et al. “Latest Technical Trend of Pressure Wave Analysis (in Japanese)” Journal of JSAE 55 9 83 88 2001