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    • 2. 发明公开
    • KOLBENPUMPE
    • EP2823177A1
    • 2015-01-14
    • EP13700489.1
    • 2013-01-07
    • Robert Bosch GmbH
    • MEIER, GerhardMEINZER, DominikSCHETTER, MarkusALEKER, JochenGENTE, ArnoldDUTT, AndreasMAURER, FrankGREINER, Matthias
    • F02M59/10F04B1/04
    • F02M59/102F04B1/0404F04B1/0426F04B1/0435F04B1/0439
    • The invention relates to a piston pump, in particular a high-pressure fuel pump, comprising a housing (1), a piston and a drive shaft (2) having a cam section (3) on which the piston is at least indirectly supported via a guide roller (5) that is rotatably mounted in a roller plunger (4), wherein laterally on either of the two sides of the cam section (3) a rim (6) is provided that protrudes in the radial direction beyond the cam section (3), wherein the rim (6) tapers on one front face directed towards the guide roller (5) to an outer circumference of the rim (6), wherein the rim (6) is in particular conical, so that an angular opening results, wherein the cam roller comprises a convex curvature directed towards the rim (6), preferably with a radius (r). Alternatively, also the rim can have a convex curvature and the roller can taper conically.
    • 本发明涉及一种活塞泵,尤其是高压燃料泵,其包括壳体(1),活塞和具有凸轮部分(3)的驱动轴(2),所述活塞至少通过所述凸轮部分 一个可转动地安装在一个滚子柱塞(4)中的导向滚子(5),其中在凸轮部分(3)的两侧中的任一侧横向地设置一个凸缘部分(6),该凸缘部分在径向方向上突出超过凸轮部分 其特征在于,所述轮辋(6)在朝向所述导向滚轮(5)的一个前表面上渐缩至所述轮辋(6)的外周,其中所述轮辋(6)尤其是圆锥形的, 结果,其中凸轮辊包括朝向边缘(6)指向的凸曲率,优选具有半径(r)。 或者,边缘也可以具有凸曲率,并且滚子可以锥形渐缩。