The invention provides an oil-electric-hydraulic multi-power hybrid system for an oil hybrid power vehicle and a walking engineering machine, and in a braking working condition, walking braking energy can be recycled in an electric mode based on a motor generator, a hydraulic mode based on a hydraulic pump motor and a combined mode based on the motor generator and the hydraulic pump motor. The braking energy is efficiently recycled in a large range, and the braking energy recycling efficiency is greatly improved; under the driving working condition; power can be provided in various forms such as engine independent drive, hydraulic pump motor independent drive, motor generator independent drive, engine-hydraulic pump motor combined drive, engine-motor generator combined drive, hydraulic pump motor-motor generator combined drive and engine-hydraulic pump motor-motor generator combined drive. 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 greatly 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行走工程机械油电液多动力混合系统,制动工况时,对行走制动能量的回收有基于电动发电机的电气式、基于液压泵马达的液压式和基于电动发电机‑液压泵马达的复合式,实现大范围高效回收制动能量,极大提高了制动能量回收效率;在驱动工况时,提供动力有发动机单独驱动、液压泵马达单独驱动、电动发电机单独驱动、发动机‑液压泵马达联合驱动、发动机‑电动发电机联合驱动、液压泵马达‑电动发电机联合驱动、发动机‑液压泵马达‑电动发电机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,极大改善了整车燃油经济性,节能减排效果显著。
Oil-electric-hydraulic multi-power hybrid system for oil-liquid hybrid power vehicle and walking engineering machine
油液混合动力车辆及行走工程机械油电液多动力混合系统
2023-01-03
Patent
Electronic Resource
Chinese
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