Method and device for controlling engine of hybrid electric vehicle, and hybrid electric vehicle

• Main Authors: ZHAO YI, LUO XIANG, LONG YIBING, QIU GUOMAO, ZHANG PENGJUN
• Format: Patent
• Language: Chinese; English
• Published: 08.06.2018
• Subjects: CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE ORDIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; PERFORMING OPERATIONS; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TOTHE CONTROL OF A PARTICULAR SUB-UNIT; TRANSPORTING; VEHICLES IN GENERAL

The invention relates to a method and a device for controlling an engine of a hybrid electric vehicle, and the hybrid electric vehicle. The method comprises the following steps: when the hybrid electric vehicle is switched to a parallel mode from a pure electric mode, speeding the engine to a target speed before the engine is started, and closing a clutch; controlling the engine to start so as toenable the engine to output drive torque via the clutch. After the method and the device are adopted, in a process of switching the hybrid electric vehicle to the parallel mode from the pure electricmode, the power output is enabled to be smoother, and the switching time is shortened, so that better driving experience is provided for a user. 种混合动力汽车的发动机控制方法、装置及混合动力汽车，所述方法包括以下步骤：当所述混合动力汽车从纯电模式切换到并联模式时，在所述发动机启动前将所述发动机调速至目标转速，并闭合所述离合器；控制所述发动机启动，以使所述发动机经由所述离合器输出驱动扭矩。本发明方案可以在混合动力汽车从纯电模式切换到并联模式过程中，使动力输出更加平顺，切换时间更短，为用户带来更好的驾驶体验。