混合动力同步碎石封层车动力性能仿真

Simulation on Dynamic Performance of Hybrid Power Synchronous Gravel Sealing Vehicle

为解决目前同步碎石封层车工况负荷特性变化较大,使发动机经常处于调速阶段,严重影响发动机工作效率的问题,采用理论计算和软件仿真相结合的方法,对同步碎石封层车动力系统进行研究,通过分析不同混合动力结构的优缺点,对同步碎石封层车串联混合动力系统结构进行优化设计,提出一种串联式混合动力同步碎石封层车且有利于改善发动机性能,采用磷酸铁锂电池组的混合动力同步碎石封层车,可减少污染物排放强度,对串联混合动力系统进行动力性能仿真验证,并基于某型号同步碎石封层车基本参数及动力性能指标,对同步碎石封层车混合动力系统的主要元件进行参数匹配与选型;最后,运用Cruise仿真软件搭建同步碎石封层车串联式混合动力系统仿真模型,对混合动力同步碎石封层车动力性能进行研究。结果表明,在动力性能上,串联式同步碎石封层车最高车速可达90 km/h,增加了电池、电机,整车重量增大,与原车相比,最高车速有所下降,但仍满足行驶要求,加速时间得到改善,0~30 km/h加速时间为19.6 s。

In order to solve the problem that the load characteristics of synchronous gravel sealing vehicles change greatly,the engine is often in the speed regulation stage,which seriously affects the engine efficiency.The method of combining theoretical calculation and software simulation was used to study the power system of the synchronous sealing car at any time.By analyzing the advantages and disadvantages of different hybrid power structures,the structure of the synchronous gravel sealing vehicle series hybrid power system was optimized.A series hybrid synchronous macadam sealer was proposed,which could improve the engine performance.The hybrid synchronous gravel sealing vehicles with LiFePO4 battery pack were conducive to improving engine performance and reducing pollutant emission intensity.The dynamic performance of the series hybrid system was simulated and verified,based on the basic parameters and power performance indicators of a certain type of synchronous gravel sealing vehicle,the hybrid power of the synchronous gravel sealing vehicle.The main components of the system were parameter matching and selection.The Cruise simulation software was used to build a series hybrid power system simulation model of the synchronous gravel sealing vehicle,and the dynamic performance of the hybrid synchronous gravel sealing vehicle was studied.The results show that in terms of dynamic performance,the maximum speed of the series synchronous macadam sealer can reach 90 km/h,the battery and motor are added,and the weight of the whole vehicle is increased.Compared with the original vehicle,the maximum speed is decreased,but it still meets the driving requirements,and the acceleration time is improved,and the acceleration time is 19.6 s from 0 to 30 km/h.