电控式VE分配泵的理论与实验研究

详述新研制的电控式VE分配泵的结构特点、工作方式和控制原理。将新研制的电控式VE分配泵和机械式VE分配泵同时匹配JX493Q1改型发动机，性能试验结果表明：电控式VE分配泵在发动机动力性和经济性方面较机械式VE分配泵具有明显的优势。从发动机外特性的走热来看，前者的外特性走势较后者更为理想，说明匹配电控式VE分配泵的发动机适应外界负荷变化的能力更强。

Development of an Electronically Controlled VE Distributor Injection Pump

Using electronic control to lower fuel exhaustion and emission is one of the problems to be dealt with in the development of the engine and the fuel injection system. The special feature of the construction, the working mode and the control principle of a new electronically controlled VE distributor pump are set forth in this paper. The new electronically controlled VE pump and a mechanical VE pump are respectively used in the engine JX493Q1. Experimental results show that the electronically controlled VE pump has an advantage over the mechanical VE pump both in power and economic performance. Viewed from its full-load-speed characteristic, the engine is more adaptable to load change when equipped with the electronically controlled VE pump than with the mechanical VE pump.