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    • 3. 发明公开
    • KRAFTSTOFFEINSPRITZPUMPE
    • EP0682746A1
    • 1995-11-22
    • EP95900660.0
    • 1994-11-24
    • ROBERT BOSCH GMBH
    • HELMBRECHT, PeterFEHLMANN, WolfgangSCHULTHEISS, GeroldJUNGER, DieterKEBRICH, BodoMOREL-FOURRIER, J., Paul
    • F02M39F02M41F02M59F16D3
    • F02M59/44F02M39/02F02M41/1405F02M41/1411F16D3/04
    • A distributor type fuel injection pump has a distributor shaft (19) stiffly coupled to a driving shaft (13). When rotated, the distributor shaft successively supplies injection nozzles (29) with fuel from a pump working chamber (22). Pump pistons (21) are slidingly mounted each in a radial bore (20) among a plurality of radial bores (20) arranged in the distributor shaft (19). The pump pistons (31) on the one hand delimit the pump working chamber (22) and on the other hand are frictionally connected to a coaxial cam ring (26) through rollers (24) held in roller saddles (23). In order to simplify the manufacture of the injection pump, the driving shaft (11) grasps the distributor shaft (19) with a cup-like coupling head (34). A number of axial slots (35) that corresponds to the number of radial bores (20) is arranged in the cup wall to slidingly receive the roller saddles (23). Coupling is ensured by a coupling disk (37) provided with radial coupling projections (371-374) that form-fittingly enter the axial slots (35), and with a recess (38) into which a front journal (39) of the distributor shaft (19) is form-fittingly received (fig. 1).
    • 分配式燃油喷射泵具有刚性连接到驱动轴(13)的分配器轴(19)。 当旋转时,分配器轴从泵工作室(22)连续地向喷嘴(29)供应燃料。 泵活塞(21)各自滑动地安装在布置在分配器轴(19)中的多个径向孔(20)中的径向孔(20)中。 泵活塞31一方面限定泵工作腔22,另一方面通过保持在滚动鞍座23中的滚子24与同轴凸轮环26摩擦连接。 为了简化注射泵的制造,驱动轴(11)用杯形连接头(34)抓住分配轴(19)。 对应于径向孔(20)的数量的多个轴向狭槽(35)布置在杯壁中以滑动地容纳滚轮鞍座(23)。 联轴器通过设有径向联接突出部(371-374)的联接盘(37)来确保,该径向联接突出部(371-374)形成配合地进入轴向槽(35),并且具有凹槽(38),分配器的前轴颈(39) 轴(19)形状配合地接收(图1)。