Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Kiyoyuki Kawai0
Satoshi Yamamura0
Kazuo Shibata0
Date of Patent
May 18, 2010
0Patent Application Number
118781540
Date Filed
July 20, 2007
0Patent Primary Examiner
Patent abstract
An engine includes: a cylinder block; and a piston ring, in which the cylinder block has a cylinder liner portion formed of an aluminum-based composite reinforced by a ceramic containing at least either of a silicon carbide and an alumina, and in which the piston ring is coated with a nitride film (20) including a vanadium nitride layer (21) exposed on an outer circumferential sliding surface (17).
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