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    • 4. 发明公开
    • Distributor type fuel injection pump
    • Verteilereinspritzpumpe。
    • EP0548000A2
    • 1993-06-23
    • EP92630106.0
    • 1992-12-02
    • STANADYNE AUTOMOTIVE CORP.
    • Djordjevic, Ilija
    • F02M41/10F02M59/36
    • F02M41/10F02M39/005F02M41/042F02M41/08F02M55/00F02M59/06F02M59/366F02M59/466F04B1/1071
    • The fuel injection pump has a fixed pump body (12) with a pumping chamber (20) having a plurality of plunger bores (16), a plunger (14) mounted in each plunger bore (16) for reciprocation, a cam (60) rotatable for reciprocating the plungers (14) to periodically supply an intake charge of fuel to the pumping chamber (20) and deliver a high pressure charge of fuel from the pumping chamber (20) for fuel injection and to sequentially position the plungers (14) in distributor valve positions thereof to deliver the high pressure charges of fuel, via distributor ports (70) in the plunger bores (16), to a plurality of distributor outlets (45). In one version of the pump, the plunger bores (16) are angularly spaced about and extend radially inwardly to a central coaxial bore (104), the rotary cam (60) is an annular cam which actuates the plungers (16) inwardly to deliver the high pressure charges of fuel, and a poppet valve (100) is mounted in the central coaxial bore (104) to supply fuel to and spill fuel from the pumping chamber (20). A pressure regulator (20) has a fuel inlet opening (162) in axial alignment with the poppet valve (100) and which is closed by the poppet valve (100) in its open position to increase the rate of fuel supply to the pumping chamber (20).
    • 燃料喷射泵具有固定的泵体(12),其具有多个柱塞孔(16)的泵送室(20),安装在每个活塞孔(16)中用于往复运动的柱塞(14),凸轮(60) 可旋转以使柱塞(14)往复运动,以周期性地向泵送室(20)提供燃料的进气装置,并且将来自泵送室(20)的高压燃料输送用于燃料喷射并且顺序地定位柱塞(14) 在其分配器阀位置中,通过柱塞孔(16)中的分配器端口(70)将燃料的高压装料输送到多个分配器出口(45)。 在泵的一个形式中,柱塞孔(16)围绕并径向向内延伸到中心同轴孔(104)上成角度地间隔开,旋转凸轮(60)是环形凸轮,其将柱塞(16)向内驱动以输送 燃料的高压装料和提升阀(100)安装在中心同轴孔(104)中,以将燃料供给到泵送室(20)中并从其中喷出燃料。 压力调节器(20)具有与提升阀(100)轴向对准的燃料入口(162),并且由提升阀(100)在其打开位置关闭,以增加对泵送室的燃料供给速率 (20)。