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1. (CN103717873) 燃料泵

专利局 : 中国
申请号: 201180072442.1 申请日: 01.08.2011
公布号: 103717873 公布日: 09.04.2014
公布类型: A
国际专利分类:
F02M 59/44
F 机械工程;照明;加热;武器;爆破
02
燃烧发动机;热气或燃烧生成物的发动机装置
M
汽化器,燃料喷射
59
专门适用于燃料喷射且不包含在组F02M 39/00至F02M 57/00中的泵(泵的一般特性入F04)
44
不包含在组F02M 59/02至F02M 59/42的装置中或与之无关的零件、部件或附件
CPC:
F04B 7/0015
F02M 55/04
F02M 59/022
F02M 59/368
F02M 59/462
F02M 63/005
申请人:
发明人:
优先权数据:
标题: (EN) Fuel pump
(ZH) 燃料泵
摘要: front page image
(EN) Provided is a fuel pump configured so that the excess thickness portions of the pump body are reduced to make the fuel pump compact and lightweight and so that the fuel pump is manufactured with improved productivity and has low cost. A fuel pump comprises a pump body (11), a plunger (12) which can be displaced in a reciprocating manner relative to the pump body (11), and valve elements which include both a suction valve (16) which permits the suction of fuel into a fuel pressurizing chamber (15) and a discharge valve (17) which permits the discharge of the fuel from the fuel pressurizing chamber (15). The pump body (11) is configured by including a tube-shaped valve holding member (21) which holds the valve elements (16, 17, 19), a cylinder member (22) which is supported by the valve holding member (21) and which holds the plunger (12) in a slidable manner, and an outer shell member (23) which has an inner wall surface (23a) facing the outer surface (21f) of the valve holding member (21) and which has a suction gallery chamber (13) defined by the inner wall surface (23a) and by the outer surface (21f) of the valve holding member (21).
(ZH)

本发明提供一种抑制了泵体中的加工余量部从而实现了小型、轻量化的生产性良好的低成本的燃料泵,为此,所述燃料泵具备:泵体(11);柱塞(12),其相对于所述泵体(11)而能够进行往复位移;多个阀元件,其中包括容许向燃料加压室(15)内吸入燃料的吸入阀(16)、以及容许从燃料加压室(15)喷出燃料的喷出阀(17),所述燃料泵的泵体(11)被构成为,包括:筒状的阀保持部件(21),其对多个阀元件(16、17、19)进行保持;气缸部件(22),其被阀保持部件(21)所支承并对柱塞(12)以能够滑动的方式进行保持;外壳部件(23),其具有与阀保持部件(21)的外表面(21f)对置的内壁面(23a),且通过该内壁面(23a)与阀保持部件(21)的外表面(21f)而划分形成了吸入通道室(13)。