高圧燃料ポンプ - 株式会社デンソー

Title:

高圧燃料ポンプ

Document Type and Number:

Japanese Patent JP4380739

Kind Code:

B2

Abstract:

A fuel pump includes a pump housing (120, 121) having a compression chamber (123). A plunger (150) is axially movable in the pump housing (120, 121) for pressurizing fuel in the compression chamber (123). A discharge valve (11) is configured to open to supply fuel from the compression chamber (123) to an internal combustion engine when pressure in the compression chamber (123) is more than predetermined pressure. A fuel passage (125) is configured to communicate a downstream of the discharge valve with an upstream of the discharge valve. An in-passage member (12, 17) is accommodated in the fuel passage. The in-passage member (12, 17) includes multiple members, which are combined to define a throttle portion (20) for restricting fuel, which returns from the downstream of the discharge valve to the upstream of the discharge valve.

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Inventors:

Masayuki Kobayashi
Hitoshi Shibata
Ritsumi Oguri

Application Number:

JP2007178904A

Publication Date:

December 09, 2009

Filing Date:

July 06, 2007

Export Citation:

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