Crowell & Moring LLP
Fuel pump, in-cylinder direct injection type internal combustion engine using the same and surface treatment method
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.
Hitachi, Ltd.
F F C F F F C F C Y F F
F04B F02M C23C F02M F05C F05C C23C F02B C23C Y02T F04B F04B
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Atsuji Arata Masayoshi Kazuo Yukio Hiroyuki Katsuyoshi Noboru Shizuka Hideki Yoshinobu
Saito Kagiyama Kotaki Ojima Takahashi Yamada Terakado Baba Yamaguchi Machimura Ono