High pressure fuel supply pump with electromagnetic suction valve

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United States of America Patent

PATENT NO 9920727
SERIAL NO

15019699

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Importance

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Abstract

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To reduce collision noise created by the operation of an electromagnetic suction valve provided on a high pressure fuel supply pump. In the present invention, in order to achieve the above object, the mass of a member which collides by magnetic attractive force is reduced to reduce the noise to be generated. The thus configured present invention provides the following advantageous effects. The noise generated when a core and an anchor collide with each other by magnetic attractive force depends on the magnitude of the kinetic energy of a moving element. The kinetic energy to be consumed in the collision is only the kinetic energy of the anchor. The kinetic energy of a rod, being absorbed by a spring, does not contribute to the noise; thus, the energy when the anchor and the core collide with each other can be reduced, whereby the noise to be created can be reduced.

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Patent Owner(s)

Patent OwnerAddress
HITACHI AUTOMOTIVE SYSTEMS LTDHITACHINAKA-SHI

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Kawano, Tatsuo Hitachinaka, JP 15 39
Miyazaki, Katsumi Hitachinaka, JP 28 91
Tokuo, Kenichiro Tokyo, JP 51 311
Usui, Satoshi Hitachinaka, JP 116 461
Yamada, Hiroyuki Hitachinaka, JP 397 3519

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