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为了进一步降低商用车的燃油消耗和CO2排放,开展基于发动机工况需求的电控集成优化控制研究。以某直列4缸电控共轨柴油机为研究对象,以发动机水温为反馈,对发动机水泵、节温器等电控冷却系统零部件进行综合调节,实现快速暖机升温以及正常行驶中发动机水温恒定在最佳温度,并通过优化VGT,改善燃烧过程。试验结果表明,采用智能控制系统可将冷却水温控制在各工况所对应的最优冷却水温附近,基于发动机工况需求的电控集成优化控制可以降低柴油机油耗3.51%,充分验证了智能控制方案的可行性和有效性。
In order to further reduce the fuel consumption and CO2 emissions of commercial vehicles, the research on integrated control of electric control based on engine operating conditions is carried out. Taking an in-line 4-cylinder electronic control common rail diesel engine as the research object, the water temperature of the engine was used as a feedback to synthetically adjust the parts of the electronic control cooling system, such as the engine water pump and the thermostat, so as to achieve rapid warm-up and constant engine water temperature during normal operation At the optimum temperature, and by optimizing VGT, improve the combustion process. The experimental results show that the intelligent control system can control the cooling water temperature around the optimum cooling water temperature corresponding to each working condition. The integrated control based on the engine operating conditions can reduce the fuel consumption of diesel engine by 3.51%, fully verifying the intelligent control scheme Feasibility and effectiveness.