PISTON OF INTERNAL COMBUSTION ENGINE
To provide a piston of an internal combustion engine which can improve the lubrication performance of the piston and an inner wall of a cylinder bore, and can reduce a friction loss of the piston.SOLUTION: In a piston 7, lower ends of recesses 41 located at an upper boundary 37a side out of recesses...
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Format: | Patent |
Sprache: | eng ; jpn |
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