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2024
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Invention
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Piston ring with hard plating, and preparation method therefor. A piston ring with a hard plating... |
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|
Invention
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Wear-resistant and low-friction coated piston ring and preparation method therefor. A wear-resist... |
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2019
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Invention
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Combined oil ring and piston engine. Provided is a combined oil ring, comprising an annular coil ... |
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2015
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Invention
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Piston ring with variable radial thickness. A piston ring (10) with variable radial thickness. Th... |
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Invention
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Oil scraper ring. Disclosed is an oil scraper ring, comprising a ring body (4), the ring body (4)... |
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2014
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Invention
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Multilayer multi-element composite hard pvd coating on the surface of a piston ring, a piston rin... |
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1998
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P/S
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Internal combustion power-generating equipment. |
