The Effect of PISTON DESIGN on PISTON-RING STICKING
450154
01/01/1945
- Event
- Content
- BENCH tests of several designs of both aluminum and cast-iron pistons have led the author to the following conclusions:
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1.
Bench tests for pistons, when properly correlated with actual engine operating conditions, can be used for heat-flow and piston temperature determinations, and will be useful in piston design.
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2.
Definite control of heat flow to rings is necessary in diesel iron pistons and can best be obtained by limiting the area of the cross-section immediately above the top ring or back of all rings.
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3.
Rings are only 65% as effective as lands and the piston skirt for transferring heat from the piston to the cylinder wall.
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4.
The thermal break between the piston surface and cylinder wall is the major restriction to heat flow through the piston.
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5.
Proper use of ribs in the piston head improves the conductivity of the piston and promotes uniform heat distribution in a cast-iron piston with a minimum of material.
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1.
- Pages
- 7
- Citation
- BRYAN, H., "The Effect of PISTON DESIGN on PISTON-RING STICKING," SAE Technical Paper 450154, 1945, https://doi.org/10.4271/450154.