CAJ | 학술논문

以降低瞬态切换过程碳烟排放为目标，对柴油机相继增压系统瞬态切换的优化控制问题进行了研究．应用搭建的瞬态试验系统测量了受控增压器切入过程中，空气阀迟于燃气阀开启时间分别为0 s，0．5 s，1．5 s 和2．5 s的发动机性能参数和烟度排放等数据．试验数据显示，当受控增压器的空气阀和燃气阀同时打开时，发动机转速波动很大并且碳烟排放恶化；而如果切换延迟时间过大，则发动机转速波动频繁，主增压器进气压力下降较多，瞬态切换过程的烟度排放也相应增加．通过对瞬态试验数据的综合分析，得到了柴油机相继增压系统的最优控制策略．
이강저순태절환과정탄연배방위목표，대시유궤상계증압계통순태절환적우화공제문제진행료연구．응용탑건적순태시험계통측량료수공증압기절입과정중，공기벌지우연기벌개계시간분별위0 s，0．5 s，1．5 s 화2．5 s적발동궤성능삼수화연도배방등수거．시험수거현시，당수공증압기적공기벌화연기벌동시타개시，발동궤전속파동흔대병차탄연배방악화；이여과절환연지시간과대，칙발동궤전속파동빈번，주증압기진기압력하강교다，순태절환과정적연도배방야상응증가．통과대순태시험수거적종합분석，득도료시유궤상계증압계통적최우공제책략．
For reducing soot emission in transient state, the optimal transient switching strategy of the diesel engine sequential turbocharging ( STC) system was investigated. In the transient switching experiments, the diesel engine performance parameters and soot emission were measured when the delay time between the air valve open and the gas valve open is 0 s,0.5 s,1.5 s and 2.5 s, respectively, during the controlled turbocharger switch-in process. The experiment results showed that the engine speed waved evidently and the soot emission deteriorated when the air valve and gas valve opened simultaneously;However, the longer the switching delay time was, the more the engine speed waved, the more the main turbocharger pressure dropped and the more the transient soot emission increased. The optimal transient switching strategy is obtained based on the analysis of the engine performance parameters and soot emission at switching condition.