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The Designs of Piston and Piston Ring to Reduce Lubricating Oil Flow into the Combustion Chamber
Technical Paper
1999-01-3316
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
Using a modified engine with a transparent glass cylinder for motoring equipment, the effects of the structure in the vicinity of the oil ring groove drain back slots of the inside of the piston, the end clearance size of the oil ring side rail gaps and the shape of the top ring gap on the lubricating oil flow were examined.
The results indicate that the amount of undesirable oil flow was reduced by utilizing a piston with the covers installed under the drain back slots on the inside of the piston, the side rails with the optimized upper and lower side rail gap size and the top ring with a special joint (triangle step joint) as compared to a standard piston and standard piston rings. Furthermore, the amount of undesirable oil flow was considerably reduced by utilizing the combination of the modified piston and rings.
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Citation
Ishihara, S., Nakashima, K., Urano, K., and Murata, K., "The Designs of Piston and Piston Ring to Reduce Lubricating Oil Flow into the Combustion Chamber," SAE Technical Paper 1999-01-3316, 1999, https://doi.org/10.4271/1999-01-3316.Also In
References
- Nakashima, K. Ishihara, S. Urano, K. Observation of Lubricating Oil Flow from the Sump to the Combustion Chamber through the Piston Ring Belt in an Automobile Gasoline Engine Transactions of the Japan Society of Mechanical Engineers 60 578 1994 3583
- Nakashima, K. Ishihara, S. Urano, K. Murata, K. Lubricating Oil Flow into the Combustion Chamber and its Reduction Method in an Automobile Gasoline Engine SAE Paper 962034
- Nakashima, K. Ishihara, S. Urano, K. Experimental Development of Piston with Reduced Lubricating Oil Flow in Automobile Gasoline Engine Transactions of the Japan Society of Mechanical Engineers 61 587 1995 2738
- Nakashima, K. Ishihara, S. Urano, K. Influence of Piston Ring Gaps on Lubricating Oil Flow into the Combustion Chamber SAE Paper 952546
- Nakashima, K. Ishihara, S. Urano, K. Murata, K. A Study on Lubricating Oil Flow into the Combustion Chamber for the Top Ring with a Special Joint SAE Paper 982441