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论述了一种新型燃油喷射系统的研究设计方案。该燃油系统针对“溶气柴油”这种特殊燃料的需求而设计,目的在于同时降低柴油机排放中的NO_x和碳烟微粒。喷油系统基于液压共轨式电控原理而设计,通过在共轨腔和喷油嘴之间安装液压活塞既实现了工作油与燃油相分离,又实现了中、低压供油,高压喷射的目的,降低了加工的难度,同时解决了“溶气柴油”供油系统中气体易析出的难题。对电控系统中的关键部件——三通电磁阀的设计、加工和结构及对喷油率的影响进行重点研究。在自行设计的电控喷油系统试验台上对该系统进行了整体调试和初步试验,试验结果达到了预期的设计目标。
Discussed a new type of fuel injection system research and design. The fuel system is designed for the specific fuel requirements of “dissolved gas diesel” to reduce NO x and soot particulates in diesel emissions. The fuel injection system is designed based on the common rail hydraulic control principle. By installing the hydraulic piston between the common rail chamber and the injector, the working oil and fuel are separated and the medium and low pressure oil supply and high pressure injection The purpose of which reduces the difficulty of processing and at the same time solves the problem that the gas in the “dissolved gas diesel” oil supply system is easy to be precipitated. The key part of the electronic control system - three-way solenoid valve design, processing and structure of the focus on the impact of fuel injection rate. The whole commissioning and preliminary test of the system were carried out on a self-designed test rig of the electronic fuel injection system. The test results achieved the expected design goals.