发明授权
- 专利标题: Direct fuel injection-type spark-ignition internal combustion engine
- 专利标题(中): 直喷式火花点火内燃机
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申请号: US09543086申请日: 2000-04-04
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公开(公告)号: US06257199B1公开(公告)日: 2001-07-10
- 发明人: Mutsumi Kanda , Toshimi Kashiwagura , Fumiaki Hattori , Yoshihiro Nomura
- 申请人: Mutsumi Kanda , Toshimi Kashiwagura , Fumiaki Hattori , Yoshihiro Nomura
- 优先权: JP11-102760 19990409
- 主分类号: F02B304
- IPC分类号: F02B304
摘要:
A direct fuel injection-type spark ignition internal combustion engine is disclosed. The engine comprises a spark plug arranged in the upper wall of the cylinder, a fuel injector for directly injecting fuel into the cylinder, and a cavity formed in the top surface of the piston. The cavity has a bottom wall and a spark plug side wall. Fuel injected into the cavity from the fuel injector in the latter half of the compression stroke proceeds on the bottom wall of the cavity so as to be deflected by the spark plug side wall and led to the vicinity of the spark plug. In the engine, the fuel injector injects fuel in the shape of a fan having a relatively small thickness. The cavity has guide walls for preventing fuel from excessively spreading in the direction of width of the fan shape as it proceeds on the bottom wall.