CAJ | 학술논문

为了实现空气系统对扭矩请求的迅速响应，对不同发动机运行工况下可变截面增压器（VGT）控制器的标定策略进行了试验研究。以GW4D20欧四电控柴油发动机为例，试验表明，在瞬态工况下，对VGT的开环控制具有较好的动态响应和控制精度；在NEDC循环中，VGT在进气需求上的响应速度比控制精度对发动机的性能影响更加明显。
위료실현공기계통대뉴구청구적신속향응，대불동발동궤운행공황하가변절면증압기（VGT）공제기적표정책략진행료시험연구。이GW4D20구사전공시유발동궤위례，시험표명，재순태공황하，대VGT적개배공제구유교호적동태향응화공제정도；재NEDC순배중，VGT재진기수구상적향응속도비공제정도대발동궤적성능영향경가명현。
Introduced the calibration strategy study on the controller for the variable geometry turbo(VGT) on diesel engines, which reduces the air system response time to torque request. Research on GW4D20EIV engine indicates that open-loop control has a good dynamic response and acceptable accuracy in transient conditions;and in NEDC cycle the air system's response time has more influence than control accuracy on engine performance.