High-pressure fuel supply pump having electromagnetically-driven intake valve

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 8985973
SERIAL NO

13272248

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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Responsiveness is improved in valve opening and valve closing of an electromagnetically driven intake valve unit in which a valve is provided on a pressurizing chamber side of a valve seat. The valve includes an annular abutting surface that abuts the valve seat to shut off a fuel intake passage and a bottomed cylindrical part provided at an inner peripheral part of the annular abutting surface. The bottomed cylindrical part is inserted into a fuel introduction hole formed in the valve housing inside the valve seat, and the outer surface of an end part of the bottomed cylindrical part is exposed to fuel in a low pressure fuel chamber provided upstream of the fuel introduction hole.

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Patent Owner(s)

  • HITACHI AUTOMOTIVE SYSTEMS, LTD.

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Hayatani, Masahiko Hitachinaka, JP 27 188
Kawano, Tatsuo Hitachinaka, JP 15 74
Miyazaki, Katsumi Hitachinaka, JP 28 163
Tamura, Shingo Hitachinaka, JP 43 203
Tokuo, Kenichiro Hitachinaka, JP 56 470
Usui, Satoshi Hitachinaka, JP 133 771
Yamada, Hiroyuki Hitachinaka, JP 455 5047

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