发明授权
- 专利标题: Spark-ignition internal combustion engine
- 专利标题(中): 火花点火内燃机
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申请号: US12907394申请日: 2010-10-19
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公开(公告)号: US08820292B2公开(公告)日: 2014-09-02
- 发明人: Tsuyoshi Goto , Hidetoshi Kudou , Yasushi Nakahara , Masami Nishida
- 申请人: Tsuyoshi Goto , Hidetoshi Kudou , Yasushi Nakahara , Masami Nishida
- 申请人地址: JP Hiroshima
- 专利权人: Mazda Motor Corporation
- 当前专利权人: Mazda Motor Corporation
- 当前专利权人地址: JP Hiroshima
- 代理机构: Studebaker & Brackett PC
- 优先权: JP2009-243571 20091022
- 主分类号: F02F3/26
- IPC分类号: F02F3/26
摘要:
Provided is a spark-ignition internal combustion engine capable of ensuring engine output power while setting a geometric compression ratio of an engine body to a high value. In the spark-ignition internal combustion engine, each of a clearance between a top surface (3a) of a piston (3) located at a top dead center position and a lower surface (8a) of each of two intake valves (8) in a full-closed state, and a clearance between the top surface (3a) of the piston (3) located at the top dead center position and a lower surface (9a) of each of two exhaust valves (9) in a full-closed state, is set to 5 mm or more, and a stroke length S of the piston (3) is set to satisfy the following relation: S≦0.977×B+18.2, where B is a bore diameter of a cylinder.
公开/授权文献
- US20110094473A1 SPARK-IGNITION INTERNAL COMBUSTION ENGINE 公开/授权日:2011-04-28