ETC瞬态循环控制技术研究

Study on Control Technology of European Transient Cycle

对我国第Ⅲ阶段排放法规中有关带先进后处理装置的重型柴油车和重型燃气车辆的ETC(european transient cycle)瞬态循环工况的测试控制方法进行研究。研究结果表明:在标准规定的时长为1 s的工况内,阶跃时间和稳定时间的分配对测试的相关性影响很大,为了使不同试验的测试结果保持一致性,需对阶跃时间和稳定时间加以规定。

The control strategy of European Transient Cycle （ETC）, which was used for measuring exhaust emissions from heavy-duty diesel vehicles and heavy-duty NG and LPG vehicles according to China Ⅲ stage emission standard, was investigated. The experimental results show that the distribution of the ramp time and the stable time during one second operating condition has greater effect on the correlation in ETC, and the ramp time and the stable time should be defined in ETC in order to obtain the consistant testing results.