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    • 80. 发明授权
    • Fuel accumulator with pressure on demand
    • 燃油蓄能器,按需压力
    • US06234128B1
    • 2001-05-22
    • US09523996
    • 2000-03-13
    • David L. Reuss
    • David L. Reuss
    • F02M3704
    • F02M63/0225F02M37/04F02M59/18F02M2200/60
    • A fuel system has a pump which supplies fuel under pressure to a fuel rail for distribution by fuel injectors to the cylinders of an engine. A fuel accumulator, having a volume greater than the volume of fuel required to start the engine, is disposed in fluid communication with the fuel rail to supply a charge of fuel thereto during engine start-up at a pressure level sufficient to cause fuel atomization within the cylinder. The fuel in the accumulator is stored at the ambient pressure. A spring force or a solenoid force is applied to the fuel in the accumulator such that the fuel is ejected into the fuel rail at the required pressure level. A check valve is positioned to prevent fuel flow from the fuel rail to the pump during the initial discharge from the accumulator. The accumulator is refilled by fuel from the pump during normal operation and the fuel therein is reduced to ambient pressure when the engine operation is discontinued.
    • 燃料系统具有一个泵,该泵将压力下的燃料供应到燃料导轨,用于由燃料喷射器分配给发动机的气缸。 具有大于起动发动机所需的燃料的体积的燃料蓄积器设置成与燃料轨道流体连通,以在发动机起动期间以足以使燃料雾化的压力水平向其供应燃料 气瓶。 蓄能器中的燃料以环境压力储存。 弹簧力或螺线管力被施加到蓄能器中的燃料,使得燃料以所需的压力水平喷射到燃料轨道中。 定位止回阀,以防止在从蓄能器初始排放期间燃料从燃料轨道流到泵。 在正常操作期间,蓄能器被来自泵的燃料再填充,并且当发动机操作停止时,其中的燃料减少到环境压力。