Views:7 Author:Site Editor Publish Time: 2020-04-16 Origin:Site
The difference between common rail system and camshaft driven diesel injection system
The common rail system is different from the diesel injection system previously driven by a camshaft. The common rail diesel injection system completely separates the generation of injection pressure and the injection process from each other. The solenoid-controlled injector replaces the traditional mechanical injector. The fuel pressure in the fuel rail is generated by a radial plunger high-pressure pump. The pressure is independent of the engine speed and can be set freely within a certain range. . The fuel pressure in the common rail is controlled by an electromagnetic pressure regulating valve, which continuously adjusts the pressure according to the working needs of the engine. The pulse signal on the solenoid valve of the injector is controlled by the electronic control unit to control the fuel injection process. The amount of fuel injection depends on the fuel pressure in the fuel rail and the length of the solenoid valve opening time, as well as the liquid flow characteristics of the fuel injection nozzle.