发明公开
- 专利标题: Fuel feed system
- 专利标题(中): Brennstoffversorgungssystem
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申请号: EP11160962.4申请日: 2002-10-18
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公开(公告)号: EP2351926A1公开(公告)日: 2011-08-03
- 发明人: Usui, Satoshi , Odakura, Hiroshi , Onose, Toru , Saito, Atsuji , Abe, Masami , Yamada, Hiroyuki
- 申请人: Hitachi, Ltd. , Hitachi Car Engineering Co., Ltd.
- 申请人地址: 6-6, Marunouchi 1-chome Chiyoda-ku Tokyo 100-8280 JP
- 专利权人: Hitachi, Ltd.,Hitachi Car Engineering Co., Ltd.
- 当前专利权人: Hitachi, Ltd.,Hitachi Car Engineering Co., Ltd.
- 当前专利权人地址: 6-6, Marunouchi 1-chome Chiyoda-ku Tokyo 100-8280 JP
- 代理机构: MERH-IP Matias Erny Reichl Hoffmann
- 优先权: JP2002057132 20020304
- 主分类号: F02M37/00
- IPC分类号: F02M37/00
摘要:
The invention relates to a fuel feed system capable of feeding a fuel to fuel injection valves at a fuel pressure with improved stability. A fuel feed system for an internal combustion engine including a fuel tank (50) and a low-pressure pump (51) for feeding the fuel in the, fuel tank to fuel injection valves, is provided with a diaphragm type damper (80) having a wave-shape cross section at a position in contact with the fuel. Also, in a high-pressure fuel feed pump including a pressurizing chamber (12) for pressurizing the fuel, a plunger (2) for pumping the fuel within the pressurizing chamber (12), an intake valve (5) provided at a fuel inlet (10) of the pressurizing chamber (12), a discharge valve (6) provided at a fuel outlet (11) of the pressurizing chamber (12), and a low-pressure chamber provided in an upstream of the intake valve (5), a mechanism for reducing fuel pressure pulsation is disposed in a space of the low-pressure chamber provided in the upstream of the intake valve (5), and a fuel pressure sensor (56; 90) for measuring the fuel pressure is mounted near the mechanism for reducing fuel pressure pulsation.
公开/授权文献
- EP2351926B1 Fuel feed system 公开/授权日:2013-01-16
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