The invention provides an oil-liquid hybrid power vehicle and a walking engineering machinery oil-liquid hybrid power system thereof, when the system is in a braking working condition, the walking braking energy can be recovered in an electric mode based on a motor generator, a hydraulic mode based on a pump motor and a combined mode based on the motor generator and the pump motor, the braking energy can be efficiently recovered in a large range, and the energy utilization rate is improved. The braking energy recovery efficiency is improved; when the system is in a driving working condition, power is provided in various forms such as engine independent driving, pump motor independent driving, motor generator-pump motor independent driving, engine-pump motor combined driving, engine-motor generator-pump motor combined driving and the like; the use of the engine is reduced through multiple independent driving modes, the engine can stably operate in the economic working condition for a long time through multiple combined driving modes, the fuel economy of the whole vehicle is improved, and the energy-saving and emission-reducing effects are remarkable.
本发明提供了油液混合动力车辆及其行走工程机械油液混合动力系统,系统制动工况时,对行走制动能量回收有基于电动发电机的电气式、基于泵马达的液压式和基于电动发电机‑泵马达的复合式,实现大范围高效回收制动能量,提高了制动能量回收效率;系统驱动工况时,提供动力有发动机单独驱动、泵马达单独驱动、电动发电机‑泵马达单独驱动、发动机‑泵马达联合驱动、发动机‑电动发电机‑泵马达联合驱动等多种形式,通过多种单独驱动方式减少发动机的使用和多种联合驱动方式实现发动机长时间稳定运行于经济工况,改善了整车燃油经济性,节能减排效果显著。
Oil-liquid hybrid power vehicle and walking engineering machinery oil-liquid hybrid power system thereof
油液混合动力车辆及其行走工程机械油液混合动力系统
2022-12-30
Patent
Electronic Resource
Chinese
Hydraulic hybrid power system of walking engineering machinery
European Patent Office | 2024
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