This study developed a friction measurement apparatus with a floating cylinder liner, in a small motorcycle engine. In this measurement apparatus, joint plates were installed in the grooves on the outer periphery of the floating liner, and then the plates, as well as load washers of piezo type were mounted in the cylinder block, at both the thrust and the anti-thrust sides. A stepped ring, protruding inward, was mounted on the top of the floating liner so that cylinder pressure acting on the stepped portion was balanced in the vertical direction. Thus, it was possible to measure the friction in the sliding directions of the piston. Using this apparatus, the effect of engine operating period on friction was investigated, in a piston micro-dimpled with a fine particle bombarding process. Results indicated that, at low engine speeds, friction decreased with operating period, but at high engine speeds, friction decreased after 10 hours of operation, then increased after 20 hours of operation.
Furuhama S., Takiguchi M. Measurement of piston frictional force in actual operating diesel engine. SAE Technical Paper 790855. 1979.
Hoshi M. Reducing friction losses in automobile engines. Tribol Int. 1984;17(4):185-189.
Iijima N, Aoki S, Imamura J, Takiguchi M. An experimental study on effect of lower tension piston rings on piston friction and lubricating oil consumption. Transactions of the Society of Automotive Engineers of Japan. 2009;40(6):1477-1482. (in Japanese).
Ito A, Yamasaka K, Okamoto D, Morimoto T. A comparison for measurement devices for piston friction force by means of floating liner method. Transactions of the Society of Automotive Engineers of Japan. 2017;48(3):635-640. (in Japanese).
Itoh Y, Konomi T, Iwashita Y. Analysis of piston friction on firing conditions by 3-component force sensor method. Transactions of the Society of Automotive Engineers of Japan. 1988;37:163-169 (in Japanese).
Kanai S, Taresawa C, Fujiwara N. Friction reduction technology of the piston for gasoline engine. Transactions of the Society of Automotive Engineers of Japan. 2013;44(2):381-386. (in Japanese).
Konomi T, Nohira H, Murakami M, Sanda S. Effects of piston skirt profile on friction loss and oil film behaviour. Proceedings of IMechE C465/011/93. 1993:147-154.
Kovach J, Tsakiris E, Wong L. Engine friction reduction for improved fuel economy. SAE Technical Paper 820085. 1982.
Madden D, Kim K, Takiguchi M. Part 1: Piston friction and noise study of three different piston architectures for an automotive gasoline engine. SAE Technical Paper 2006-01-0427. 2006.
Matsumoto K. Friction reduction in an internal combustion engine. Journal of the Japan Society of Mechanical Engineers. 1976;79(694):870-876. (in Japanese).
Murakami M, Konomi T, Nohira H, Maeda Y, Nakada M. Analysis of piston frictional force under engine firing condition – effects of surface characteristics of piston skirt on friction. Transactions of the Society of Automotive Engineers of Japan. 1991;22(4):70-73 (in Japanese).
Nakada M. Trends in engine technology and tribology. Tribol Int. 1994:27(1):3-8.
Nakanishi K, Okada Y, Sera K, Minami K, Kadota I. Teardown analysis for piston assembly friction with optimization controls. Honda R&D Technical Review. 2010;22(1):154-159.
Nakashima K, Uchiyama Y. Experimental development of apparatus to measure piston assembly friction in an eco-mileage vehicle engine. Combustion Engines. 2019;177(2):55-59.
Nakashima K, Uchiyama Y. Influence of piston surface treatment on piston assembly friction in an eco-mileage vehicle engine. Combustion Engines. 2022;188(1):18-23.
Ogihara H, Kido T, Yamada H, Murata M, Kobayashi S. Technology for reducing engine rubbing resistance by means of surface improvement. Honda R&D Technical Review. 2000;12(2):93-98.
Ogihara H. Research into surface improvement for low friction pistons. SAE Transactions Journal of Engines. 2005, 114(3), 1182-1190.
Okamoto M, Iwashita T. Piston rings for automotive engine. Engine Technology. 2002;4(3):98-103 (in Japanese).
Tabata H, Kaneko N, Mihara Y. Improvement in accuracy of piston frictional force measurement using floating liner engine. Tribology Online. 2017;12(3):141-146.
Takiguchi M, Takimoto T, Asakawa E, Nakayama K, Someya T. A study of friction force reduction on piston skirt (Effect of width, roughness and resin coating). Transactions of the Japan Society of Mechanical Engineers B. 1997;63(611):2587-2592. (in Japanese).
Wakuri Y, Soejima M, Kitahara T, Nunotani M, Kabe Y. Characteristics of piston ring friction: Influences of lubricating oil properties. JSME International Journal Ser. C. 1995;38(3):593-600.
Yoshida H, Kusama K, Sagawa J. Effects of surface treatments on piston ring friction force and wear. SAE Technical Paper 900589. 1990.
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