气动汽车能量控制系统研究

Study on energy system of compressed air powered car

对高压压缩空气生产过程的能量消耗特性进行了分析,指出多级压缩过程是一条可行的节能途径;提出高压气体采取容积膨胀减压的新方法,对节流减压和容积膨胀减压过程的能耗特性进行了仿真计算和分析,经仿真计算表明,容积膨胀减压比节流减压能量损小10%～35%.并讨论了影响气动发动机进、排气性能的因素,提出了新型气动发动机的方案;指出采用能量补偿和能量回收方式有利于提高气动汽车的总体效率.

The energy system was composed of a high-pressure air source, a depressurization control unit, an air-powered engine and some auxiliary devices. Theoretical analysis and digital simulation were applied to determine the power consumption in a high-pressure air generating process and the energy loss in a de-pressurization operating process. The new expander depressurization method put forward here uses compressed air to power a car. The factors influencing air intake and air exhaust in the compressed-air engine powered car were presented and analyzed and the auxiliary means to enhance the system efficiency were also discussed. Some concluding results show that the multi-stage polytropic compressing process is a suitable energy saving method to generate high-pressure air; and that the expander can save about 10%-35% in contrast to the throttle regulator in pressure reducing process.