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Common rail system

- Nov 30, 2017 -

Common rail system refers to the diesel fuel from the tank, sucked out by the gear pump, through the oil-water separator, over the gear pump to the diesel filter, to the high pressure pump, common rail, injector, and sensor and ECU closed loop fuel supply System, an injection method that completely separates the generation of injection pressure from the injection process.

principle

Common rail pump to the high-pressure fuel delivered to the common rail (common rail), ECU by controlling the common rail pump electromagnetic flow regulating valve opening of the rail to achieve precise control of the oil pressure so that the pressure of high-pressure pipe size Has nothing to do with the engine speed, thus overcoming the diesel engine oil supply pressure changes with the engine speed defects. ECU control injector fuel injection, fuel injection depends on the size of the fuel rail (public fuel supply) pressure and solenoid valve opening time length.


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