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New Device for the Measurement of Piston Frictional Forces in Small Engines
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English
Abstract
Measurement of piston frictional forces during engine operation is valuable for improved fuel economy engine design. The measurement, however, is not easy work because the frictional forces are small compared with the gas and inertia forces. Several years ago, at the Musashi Institute of Technology, frictional forces were measured with a movable bore with pressure balancing. Recently, the pressure balancing devices have been improved and adapted for small engines.
The piston frictional forces in a small diesel engine and a gasoline engine have been measured with the new device. The characteristics of the friction forces and the comparison between engine sizes, gasoline and diesel engines have been clarified and the effect of multi-grade oil and friction modifiers have been tested.
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Authors
Citation
Furuhama, S. and Sasaki, S., "New Device for the Measurement of Piston Frictional Forces in Small Engines," SAE Technical Paper 831284, 1983, https://doi.org/10.4271/831284.Also In
State-Of-The-Art on Design and Performance of Diesel Power Cylinder Components
Number: SP-0552; Published: 1983-09-01
Number: SP-0552; Published: 1983-09-01
References
- Thiele E. “Ermittlung der Reibungsverluste in Verbrennungsmotoren” MTZ 43 1982 6 253
- Uras M. Patterson D. J. “Measurement of Piston and Ring Assembly Friction Instantaneous IMEP Method” SAE Piston 830416
- Furuhama S. Takiguchi M. “Measurement of Piston Friction Force in Actual Operating Diesel Engine” SAE paper- 790855
- Furuhama S. Takiguchi M. Tomizawa K. “Effect of Piston and Piston Ring Designs on the Piston Friction Forces in Diesel Engines” SAE paper- 810977
- Furuhama S. Suzuki H. “Temperature Distributions of Piston and Piston Rings in High Speed Diesel Engine” Trans. of JSME, 45-392-B 1979 571