The APU fuel system consist of a fuel valve, control unit, solenoid valve, filter, heater and control valve.
APU燃油系统包括一个燃油活门、控制组件、电磁活门油滤、加热器及控制活门。
The control unit (4) controls the flow (11) of material by opening and closing solenoid valve (6).
控制单元 （4）通过打开和关闭电磁阀（6）来控制物料流（11）。
The invention relates to an engine brake mechanism with a valve assistant control unit and a method for engine brake.
本发明涉及带有气门辅助控制单元的发动机制动装置和用于发动 机制动的方法。
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