Generation system for adjusting fuel injection pressure in hyperpressure for diesel engine
A fuel injection and generation system technology, applied in the direction of fuel injection pumps, fuel injection devices, charging systems, etc., can solve the problems that the quality of parts is limited by material properties and processing accuracy, etc., to achieve extended service life, flexible control and adjustment, The effect of a reasonable system structure
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[0016] The present invention will be described in detail below with reference to the drawings and embodiments.
[0017] The accompanying drawings show the principle diagram of the adjustable ultra-high pressure fuel injection pressure generating system of the diesel engine of the present invention. As can be seen from the figure, the system includes a pressure closed-loop feedback control loop 5 composed of a low-pressure oil pump 16, an electronically controlled medium-pressure plunger pump 15, an electronic control unit 4, an accumulator 9, an overflow valve 8 and a pressure sensor 10, and a second A one-way valve 3, the first two-position two-way solenoid valve 6, the supercharger 7, and the ultra-high pressure fuel injection circuit 17 composed of the ultra-high pressure fuel pipe 2 and the fuel injector 1; the pressure closed loop feedback control circuit 5 in the electric The control medium pressure plunger pump 15 is composed of a plunger assembly 11 and a second two-positi...
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