Fuel injection pump test bench assembly analysis

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Fuel injection pump test bench assembly analysis

Fuel injection pump test bench assembly analysis

Analysis of fuel injection pump test bench components

The lower end of the plunger of the fuel injection pump test stand is pressed against the plunger body assembly by the plunger spring, and the tappet body is pressed against the cam (on the cam shaft) by the roller. When the cam jacks up the tappet to push the plunger up, the compressed diesel forces the oil outlet valve to leave the valve seat, and the fuel injector is injected into the cylinder through the high pressure oil pipe; after the plunger rises beyond the effective stroke, the drain needle groove on the plunger The oil supply ends when it communicates with the lower edge of the plunger sleeve return hole.

The function of the plunger of the fuel injection pump is to increase the diesel pressure to meet the injection pressure requirements of the injector, and to control the oil quantity and the oil supply time. The plunger failure is an important component in the fuel injection pump assembly.

The fuel injector controlled by the solenoid valve of the high pressure fuel injection pump test bench replaces the traditional mechanical fuel injector. The fuel pressure in the fuel rail is generated by a radial plunger type high pressure pump. The pressure is independent of the engine speed. Freely set within the range.

The atomization test of the injector checker is a test to professionally test whether the injector checker leaks oil. The operation step is to press the pressure rod to spray the injector, and observe the spray atomization of the injector assembly. The spray oil particles should be small and uniform, and there is no oil flow that can be seen by the naked eye. There is no oil drop or oil drop in the oil.

Since the injector calibrator is mainly used in the oil pump nozzle manufacturer and maintenance commissioning, and the manufacturer is mass-produced, the injector calibrator is required to have a high degree of automation, such as the quick installation of the fuel injection pump and Rapid digital measurement of fuel injection, etc.

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