An Improved Approach to the Instantaneous IMEP Method for Piston-Ring Assembly Friction Force Measurement
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概要
- 論文の詳細を見る
The instantaneous IMEP method is advantageous in that it is feasible for piston friction measurement with minor engine modification, while its weakness is the low accuracy achievable in the end result. Because of error accumulation from various input data measurements and ensuing data processing, its result is bound to have a low confidence level. For minimization of the error, the frequency response function was determined for each measuring system, and the relative time delays among the measured signals were obtained by the application of the cross-correlation function. In order to further increase the accuracy, an accelerometer was installed at the piston skirt for direct inertia force measurement of the piston assembly. In addition, the crank case pressure was measured. Relatively reliable friction data were obtained up to 2000rpm motoring and 1500rpm firing conditions after taking these appropriate measures.
- 一般社団法人日本機械学会の論文
- 1992-05-15
著者
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Kim Sung
Department of Bioengineering and Technology, College of Engineering, Kangwon National University
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Yun Jeong
Department of Mechanical Engineering, Korea Advanced Institute of Science and Technology
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Kim S
Korea Advanced Inst. Sci. And Technol. Taejon Kor
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Yun J
Korea Advanced Inst. Science And Technology Taejon Kor
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Kim Sung
Department Of Anatomy
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Kim S
Korea Advanced Institute Of Science And Technology Department Of Mechanical Engineering
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Yun Jeong
Department Of Mechanical Engineering Korea Advanced Institute Of Science And Technology
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Yun Jeong
Department Of Dermatology And Internal Medicine Chungbuk National University
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Kim Sung
Department of Advanced Materials Science and Engineering, Sungkyunkwan University, Suwon, Gyeonggi 440-746, Republic of Korea
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Kim Sung
Department of Advanced Materials Engineering for Information and Electronics, Kyung Hee University, Yongin, Gyeonggi 446-701, Republic of Korea
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