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Measurement of Piston Friction Force on Firing Conditions
Technical Paper
871219
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English
Abstract
The Furuhama's movable liner method (1)*, (2) for measuring piston friction force under firing condition has been improved. The new device can avoid the influence of gas pressure of movable liner and also the lateral deformation from the piston slap impulse force.
The modified measurement device is illustrated, and then effect by test conditions - cylinder wall temperature, engine speed, and load - on piston friction force is evaluated resulting in similar conclusions to those which obtained by Furuhama et al. (3).
Changing the number of piston rings, specifications of both TOP and OIL rings are discussed in terms of decreasing friction force. In the case of TOP ring, the narrower the ring width, the lower the friction force. As for its surface treatment, the gas nitriding treatment was most favorable.
As for OIL ring, its tension gives more effect on friction force than its sliding width does.
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Authors
Topic
Citation
Yoshida, H., Kusama, K., and Mizuma, Y., "Measurement of Piston Friction Force on Firing Conditions," SAE Technical Paper 871219, 1987.Also In
References
- Furuhama S. Takiguchi M. Measurement of Piston Friction Force in Actual Operating Diesel Engine SAE Paper 790855
- Furuhama S. Sasaki S. New Device for the Measurement of Piston Frictional Forces in Small Engines SAE Paper 831284
- Furuhama S. Sasaki S. Effect of Oil Properties on Piston Frictional Forces Int. J. of Vehicle Design 7 1/2 1986
- Uras H.M. Patterson D.J. Measurement of Piston and Ring Assembly Friction Instantaneous IMEP Method SAE Paper 830416
- Goto T. et al. Measurement of Piston and Piston Ring Assembly Friction Force SAE Paper 851671
- Thiele I.E. Ermittlung der Reibungsverluste in Verbrennungsmotoren MTZ 43 6 1982
- Furuhama S. Suzuki H. Temperature Distribution in Piston and Piston Rings of A High Speed Diesel Engine Trans. Japan Soc. Mech. Engrs. 45 392 April 1979 571