The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 24, 2005
Filed:
Oct. 30, 2002
Shizuka Yamaguchi, Hitachinaka, JP;
Noboru Baba, Hitachiohta, JP;
Masaya Takahashi, Hitachi, JP;
Katsuyoshi Terakado, Naka, JP;
Arata Kagiyama, Naka, JP;
Masayoshi Kotaki, Hitachinaka, JP;
Shogo Sawada, Hitachinaka, JP;
Kazuo Ojima, Hitachinaka, JP;
Hiroyuki Yamada, Hitachinaka, JP;
Hideki Machimura, Naka, JP;
Yukio Takahashi, Hitachinaka, JP;
Shizuka Yamaguchi, Hitachinaka, JP;
Noboru Baba, Hitachiohta, JP;
Masaya Takahashi, Hitachi, JP;
Katsuyoshi Terakado, Naka, JP;
Arata Kagiyama, Naka, JP;
Masayoshi Kotaki, Hitachinaka, JP;
Shogo Sawada, Hitachinaka, JP;
Kazuo Ojima, Hitachinaka, JP;
Hiroyuki Yamada, Hitachinaka, JP;
Hideki Machimura, Naka, JP;
Yukio Takahashi, Hitachinaka, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
Disclosed herein is a fuel pump for an inter-cylinder direct fuel injection apparatus, in which occurrence of corrosion and attrition caused by cavitation or erosion can be suppressed, their resistance against the environment can be improved, and an excellent lifetime can be achieved in the case of the use of an aluminum material even if the temperature reaches as high as 100° C. or higher and the pressure reaches as high as 7 to 12 MPa. In the fuel pump for an inter-cylinder direct fuel injection apparatus, made of aluminum or an aluminum alloy, a coating film plated with Ni—P or a Ni—P based material is formed by electroless plating.