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CN101382148B 叶轮、具有叶轮的燃料泵以及具有该燃料泵的燃料供应单元 失效 - 权利终止

叶轮、具有叶轮的燃料泵以及具有该燃料泵的燃料供应单元
摘要：
一种燃料泵具有基本上同轴的外部和内部泵腔(50a、50b)。一种叶轮具有相应于内部泵腔(50b)的分隔壁(55a)以限定内部叶片槽(55)。后表面(55c)在每个内部叶片槽(55)的旋转方向上定位于后侧处。至少后表面(55c)的径向内侧在旋转方向上从径向内侧向径向外侧向后倾斜。第一线(103)连接后表面(55c)的径向内端(55d)与后表面(55c)的径向外端(55e)。第二线(104)从后表面(55c)的径向内端(55d)径向延伸。第一线(103)和第二线(104)之间限定向后倾斜角α2，其满足30°≤α2≤80°的关系。
摘要（英）：

A fuel pump has substantially coaxial outer and inner pump chambers (50a, 50b). An impeller has partition walls (55a) correspondingly to the inner pump chamber (50b) to define inner vane grooves (55). A rear surface (55c) is located at a rear side in a rotative direction of each inner vane groove (55). At least a radially inner side of the rear surface (55c) inclines rearward in the rotative direction from the radially inner side to a radially outer side. A first line (103) connects a radially inner end (55d) of the rear surface (55c) with a radially outer end (55e) of the rear surface (55c).A second line (104) radially extends from the radially inner end (55d) of the rear surface (55c). The first line (103) and the second line (104) therebetween define a backward tilt angle alpha2, which satisfies a relationship of 30 DEG <=alpha2<=80 DEG.

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