发明授权
- 专利标题： Fuel pump, in-cylinder direct injection type internal combustion engine using the same and surface treatment method
- 专利标题（中）： 燃油泵，缸内直喷式内燃机采用相同的表面处理方法
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申请号： US09637679申请日： 2000-08-14
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公开(公告)号： US06543424B1公开(公告)日： 2003-04-08
- 发明人: Shizuka Yamaguchi , Noboru Baba , Katsuyoshi Terakado , Arata Kagiyama , Hideki Machimura , Yukio Takahashi , Yoshinobu Ono , Kazuo Ojima , Masayoshi Kotaki , Hiroyuki Yamada , Atsuji Saito
- 申请人： Shizuka Yamaguchi , Noboru Baba , Katsuyoshi Terakado , Arata Kagiyama , Hideki Machimura , Yukio Takahashi , Yoshinobu Ono , Kazuo Ojima , Masayoshi Kotaki , Hiroyuki Yamada , Atsuji Saito
- 优先权： JP11-228251 19990812
- 主分类号： F02M5944
- IPC分类号： F02M5944
摘要：
In a fuel pump pressurizing fuel and supplying the fuel to a fuel injection valve of a vehicle engine, a hardened layer of at least one selected from a nitride layer, a carburated and quenched layer and a carbonitrided layer, and a metal compound layer, on a surface of the hardened layer, higher in corrosion resistance than the hardened layer are formed on one of slide surfaces contacting each other and sliding in fuel.