HEV用高膨胀比汽油机研究现状与挑战

摘要

从高膨胀比汽油机循环理论研究和高膨胀比汽油机与混合动力电机-电池系统协同工作时的工作特性两个角度,综合论述和分析了国外混合动力高膨胀比汽油机的研究现状,包括高膨胀比循环对燃油消耗和排放的影响规律,高膨胀比汽油机在与电池-电机系统协同工作时的燃烧稳定性控制策略,瞬态工况和高速工况下燃油经济性和排放性能,混合动力高膨胀比汽油机模型有效性等.%The situation of foreign HEV high expansion ratio gasoline engine was discussed and analyzed comprehensively from the cycle theory of high expansion ratio gasoline engine and the collaborative working characteristic of high expansion ratio gasoline engine and HEV motor-battery system. The referring contents mainly included the influence of high expansion ratio cycle on fuel consumption and emission, the control strategy of combustion stability when high expansion ratio gasoline engine worked with motor-battery system, the fuel economy and emission performance under transient and high-speed conditions and the validity of HEV high expansion ratio gasoline engine model.