发动机怠速起停系统性能联合仿真分析  

Performance co-simulation analysis of engine idle start-stop system

作　　者：蔡银贵 贝绍轶[1] 汪伟[1] 朱燕燕[1] 

机构地区：[1]江苏理工学院汽车与交通工程学院,常州213001

出　　处：《现代制造工程》2017年第1期19-23,共5页Modern Manufacturing Engineering

基　　金：国家自然科学基金项目(51305175);江苏省自然科学基金项目(BK2012586);江苏省"六大人才高峰"资助项目(ZBZZ-023)

摘　　要：针对汽车车速较低时低效率、高排放和怠速工况油耗较高等问题,对采用启停技术来达到城市汽车节油减排的作用进行研究。首先阐述了发动机怠速停机启动控制原理、电控单元和控制策略,建立发动机启动时动力学模型。其次在Simulink软件中建立了执行发动机怠速停机启动的控制策略模型,通过和Cruise软件联合仿真,在NEDC和Japanmode两种循环工况下对采用启停技术前、后的汽车的油耗和排放做了对比分析。仿真结果表明,整车HC、CO和NOx排放在采用启停技术后显著下降,油耗水平在采用启停技术后改善明显。证明所设计的联合仿真平台和控制策略的可行性和正确性,对汽车怠速起停系统的研究具有重要的指导意义。For the vehicle＇s low efficiency, high emissions and high fuel consumption problem by idling operation at low vehicle speed in city driving, adopting idling start-stop system to save the fuel and reduce the emission of the city vehicle were studied. The controlling principle, electronic control unit and control strategy of engine idle start/stop system are elaborated, the dynamic model during engine starting process is constructed. Then the control strategy model for carrying out engine idle start/stop is built with Matlab/Simulink, and a co-simulation with Cruise software is carried out to conduct comparative analysis on the fuel con- sumption and emissions between the vehicle adopted by start/stop technology before and after in NEDC and Japan-mode urban driving-cycles. The simulation resuhs show that the HC, CO and NOx emissions of vehicle adopted by start/stop technology are de- clined obviously,fuel consumption adopted by start/stop technology is reduced significantly. The simulation results prove that the designed co-simulation platform and control strategy are feasibility and useful. It will have important theoretical significance for the development of vehicle start-stop control system.

关 键 词：汽车 启停技术 循环工况 联合仿真 

分 类 号：TN743[电子电信—电路与系统] U460[机械工程—车辆工程]