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    • 9. 发明授权
    • ENGINE FUEL CONTROL SYSTEM
    • 发动机燃料控制系统
    • EP2891781B1
    • 2017-05-31
    • EP14191078.6
    • 2014-10-30
    • Rolls-Royce PLC
    • Griffiths, Michael
    • F02C9/30
    • F02C9/30F01D19/00F02C7/236F02C7/26F02C9/28F02C9/32F05D2220/323F05D2260/85F05D2270/03F05D2270/07F05D2270/304F05D2270/56F05D2270/64F05D2270/66Y02T50/671
    • An engine fuel control system includes a fuel metering valve operable to control the flow of fuel between a supply line and a delivery line which delivers fuel to burners of the engine. The fuel control system further includes a fixed displacement main pump which receives fuel from a low pressure (LP) source and delivers the fuel at a first high pressure (HP) to the supply line. The fuel control system further includes an augmenter pump which receives fuel from the low pressure source and delivers the fuel at a second high pressure (HPa) to one or more fuel-pressure operated auxiliary engine devices. The fuel control system further includes a start valve which is actuated at low engine speeds to open a flow path which diverts fuel delivered by the augmenter pump away from the auxiliary engine devices to the supply line to augment the fuel delivered thereto by the main pump, the start valve being actuated at higher engine speeds to shut the flow path.
    • 发动机燃料控制系统包括燃料计量阀,燃料计量阀可操作以控制供应管线和将燃料输送到发动机燃烧器的输送管线之间的燃料流量。 所述燃料控制系统还包括固定排量主泵,其接收来自低压(LP)源的燃料并将所述燃料以第一高压(HP)输送至所述供应管线。 燃料控制系统还包括增压泵,其接收来自低压源的燃料并将燃料以第二高压(HPa)输送至一个或多个燃料压力操作的辅助发动机装置。 所述燃料控制系统还包括启动阀,所述启动阀在低发动机速度下启动以打开流路,所述流动路径将由所述增强器泵输送的燃料从所述辅助发动机装置转移到所述供应管线以增大由所述主泵输送到其的燃料, 起动阀在较高的发动机速度下被致动以关闭流动路径。