The invention relates to the technical field of hybrid electric vehicles, in particular to a hybrid electric vehicle engine starting method and device.The method comprises the steps that whether a power system of a hybrid electric vehicle is abnormal or not is judged; if the power system is abnormal, an engine is controlled to be started for oil injection, otherwise, the engine rotating speed and crankshaft rotating times of the power system are obtained; and detecting whether an engine of the power system meets a preset starting condition or not according to the engine rotating speed and the crankshaft rotating frequency so as to control the engine to be started by oil injection under the condition that the preset starting condition is detected to be met. Therefore, the problems that in the related technology, the engine oil injection starting judgment mode and control strategy are single, most engine oil injection starting is controlled only according to simple engine data, the accuracy is low, meanwhile, resource waste is possibly caused, the intelligent level is low, and engine oil injection starting conditions and time cannot be corrected in time are solved; the use feeling of a user is poor, and the viscosity is low.
本申请涉及混合动力汽车技术领域,特别涉及一种混合动力汽车的发动机启动方法及装置,其中,方法包括:判断混合动力汽车的动力系统是否异常;如果动力系统异常,则控制发动机喷油启动,否则获取动力系统的发动机转速和曲轴旋转次数;根据发动机转速和曲轴旋转次数检测动力系统的发动机是否满足预设启动条件,以在检测到满足预设启动条件的情况下,控制发动机喷油启动。由此,解决了相关技术中的发动机喷油启动判断方式及控制策略较为单一,多数仅根据简单的发动机数据控制发动机喷油启动,精准度较低的同时可能会造成资源的浪费,智能水平较低无法及时修正发动机喷油启动的条件及时刻等,用户使用感较差,粘性较低等问题。
Engine starting method and device of hybrid electric vehicle
混合动力汽车的发动机启动方法及装置
12.11.2024
Patent
Elektronische Ressource
Chinesisch
IPC: | B60W CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION , Gemeinsame Steuerung oder Regelung von Fahrzeug-Unteraggregaten verschiedenen Typs oder verschiedener Funktion |
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