Sliding members and piston for internal combustion engine
AssigneeHonda Giken Kogyo Kabushiki Kaisha
InventorsShigemi Kobayashi, Masashi Murata, Hidemi Ogihara, Hiroshi Yamada, Kazuhisa Ishizuka, Sakae Tsunashima
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Abstract
A sliding surface of at least one of sliding members sliding with respect to each other in a sliding direction comprises a protrusion extending along a direction intersecting the sliding direction and fine dimples provided on a surface of the protrusion. In the sliding members, lubricating oil is accumulated in the dimples, and is easily extracted through a drain portion formed by dimple in a running-in operation.
Claims26
Sliding members having a sliding surface and which slide with respect to each other in a sliding direction, the sliding surface of at least one of the sliding members comprising:
- a protrusion extending along a direction intersecting the sliding direction;
- and
- fine dimples provided on a surface of the protrusion.
A piston for internal combustion engines, the piston comprising:
- a skirt portion provided on a side surface of a piston body;
- a protrusion provided on at least the skirt portion and extending along the outer circumference thereof;
- and
- fine dimples provided on a surface of the protrusion.
Dependencies are inferred from the claim text.