Piston For Internal Combustion Engine
AssigneeSuzuki Motor Corporation
InventorNaoyuki SUDA
Life of this patent
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Abstract
[Problem to be Solved] A space from a skirt to a side wall is uniformly deformed in a wide range without a bias. [Solution] A piston 1 has two pin bosses 3 disposed so as to face each other at an interval, a side wall 4 disposed on both sides of the pin boss 3, and a skirt 5 provided continuously to the side wall 4, and a pin hole 3a into which a piston pin 1a can be inserted is formed in the pin boss 3. Inner walls 10 of the side wall 4 and the skirt 5 are continuous with each other and disposed by facing on both sides of a pin boss axis C1 with the pin boss axis C1 between them. A horizontal section of the inner wall 10 is formed along a specific oval shape E.
Claims7
A piston for an internal combustion engine having two pin bosses provided on a lower surface of a piston head so as to face each other at an interval, a side wall provided on the lower surface of the piston head and disposed on both sides of each of the pin bosses, and a skirt provided continuing to the side wall, a pin hole into which a piston pin can be inserted being formed in each of the two pin bosses, wherein
- inner walls of the side walls and the skirt are continuous with each other, the inner walls are disposed by facing each other on both sides of a pin boss axis with the pin boss axis connecting centers of the two pin holes between them;
- and
- a horizontal section of each of the inner walls is formed along a specific oval shape.
Dependencies are inferred from the claim text.