The invention relates to optimized regenerative braking for hybrid electric vehicle powertrain configuration. Hybrid electric vehicle (HEV) powertrains and control logic to optimize regenerative braking (regen), methods of making/using such systems, and HEVs that increase regen with reduced engine and transmission friction are provided. A method of operating an HEV includes determining whether an HEV operating state or failure prevents engagement of a regen control operation, and if not, responsively determining whether a torque request for an HEV powertrain is less than a road load on the HEV. In response to the torque request being less than the road load, a regen control operation is performed. The regen control operation includes the powertrain drivingly disconnecting the engine from the wheels, and the engine operates at a target engine speed. Calculating a negative torque compensation to maintain a vehicle deceleration rate after the engine is disconnected from the wheels; the traction motor outputs a negative torque based on the negative torque compensation.
本发明涉及用于混合动力电动车辆动力系配置的优化再生制动。提供了混合动力电动车辆(HEV)动力系和优化再生制动(regen)的控制逻辑,制造/使用这种系统的方法,以及通过降低的发动机和传动装置摩擦而增加regen的HEV。一种操作HEV的方法,包括确定HEV操作状态或故障是否阻止regen控制操作的接合,并且如果不是,则响应性地确定HEV动力系的扭矩请求是否小于HEV上的道路载荷。响应于扭矩请求小于道路载荷,执行regen控制操作。regen控制操作包括动力传动装置将发动机与车轮驱动地断开连接,并且发动机以目标发动机速度操作。计算在发动机与车轮断开连接后以维持车辆减速率的负扭矩补偿;牵引马达基于该负扭矩补偿输出负扭矩。
Optimized regenerative braking for hybrid electric vehicle powertrain configuration
用于混合动力电动车辆动力系配置的优化再生制动
2022-04-05
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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