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    • 3. 发明授权
    • Electromagnetic valve-controlled fuel injection pump for internal combustion engines, especially diesel engines
    • 用于内燃机,特别是柴油发动机的电磁阀控燃油喷射泵
    • US06884041B2
    • 2005-04-26
    • US10181867
    • 2001-11-16
    • Peter BoehlandAndreas SterrAndreas Dutt
    • Peter BoehlandAndreas SterrAndreas Dutt
    • F02M41/14F02M59/36F02M59/46F02M37/04F04B49/00
    • F02M59/466F02M41/1411F02M59/366
    • A solenoid-valve-controlled fuel-injection pump for internal combustion engines, in particular diesel engines, has a solenoid valve, whose valve needle separates a high-pressure region from a low-pressure region, i.e. connects the high-pressure region and low-pressure region, in the pump housing, via a valve seat; the injection period being controlled by the opening of the solenoid valve. In addition, a low-pressure compensating piston situated in the low-pressure region is provided in order to compensate for pressure fluctuations in the low-pressure region. The exceptional feature is that the low-pressure compensating piston, which is positioned coaxially to the solenoid-valve needle, takes the form of a component part that is separate from the solenoid-valve needle. This ensures that the solenoid valve is opened unhindered and as rapidly as possible by the opening force exerted on the solenoid-valve needle by the electromagnet.
    • 用于内燃机,特别是柴油发动机的电磁阀控制的燃料喷射泵具有电磁阀,其阀针将高压区域从低压区域分离,即将高压区域和低压区域连接 压力区域,在泵壳体中,经由阀座; 喷射周期由电磁阀的打开控制。 此外,提供位于低压区域中的低压补偿活塞,以便补偿低压区域中的压力波动。 特别的特征在于,与电磁阀针同轴配置的低压补偿活塞采取与电磁阀针分开的部件的形式。 这确保了电磁阀不受阻碍地打开,并且通过由电磁体施加在电磁阀针上的打开力尽可能快地打开。