Electronic control pressure accumulation distribution common rail device

Abstract

The invention relates to an electronic control pressure accumulation distribution common rail device which comprises a plurality of fuel injectors and a pressure source, wherein the pressure source comprises a rail; the rail is fixed on the top of a plunger; the plunger is connected with a cam wheel shaft through a tappet; a distributor is installed on the cam wheel shaft, and comprises a distributor stator and a distributor rotor; the distributor stator is fixed on the tail part of the cam wheel shaft; the distributor rotor is driven in the distributor stator to rotate by the cam wheel shaft; each fuel injector is communicated with a corresponding high-pressure fuel channel on the distributor stator; a fuel supplying electromagnetic valve and a pressure relief electromagnetic valve are installed on the distributor; the inlet of the fuel supplying electromagnetic valve is communicated with the rail through a pipeline; the outlet of the fuel supplying electromagnetic valve is communicated with the high-pressure fuel channel of the distributor rotor; and the inlet of the pressure relief electromagnetic valve is communicated with the corresponding high-pressure fuel channel of the distributor rotor. The electronic control pressure accumulation distribution common rail device provided by the invention has uniform fuel injection quantity, avoids high-pressure dropping and leakage, and is safe and reliable.

Description

technical field [0001] The invention relates to a common rail device, in particular to an electronically controlled pressure storage distribution type common rail device, which belongs to the technical field of high pressure common rail for diesel engines. Background technique [0002] The common rail system uses a high-pressure pump to press the fuel to 40-200Mpa and stores it in the rail. The fuel injector controlled by the solenoid valve is injected into the cylinder of the diesel engine to achieve quantitative, timing, and constant pressure injection. In the prior art, the fuel injector is subjected to high-pressure fuel even when it is not injecting fuel, and must have high sealing accuracy, otherwise the fuel will enter the cylinder in the form of dripping and damage the normal operation of the diesel engine. In addition, due to the difference in the solenoid valves of the fuel injectors of each cylinder, the amount of fuel injected into each cylinder is not uniform, w...

AI Technical Summary

Problems solved by technology

In the prior art, the fuel injector is also subjected to high-pressure fuel when not injecting fuel, and must have high sealing accuracy, otherwise the fuel will enter the cylinder in the form of dripping and damage the normal operation of the diesel engine

In addition, due to the difference in the solenoid valve of the fuel injector of each cylinder, the fuel injection quantity injected into each cylinder is uneven, which also affects the performance of the diesel engine.

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