Abstract:The parallel hydraulic hybrid vehicle was the research object. According to the brake energy recovery and reuse, the working principle of hydraulic regeneration system and the parameters of secondary element, accumulator and torque coupler were analyzed,and the energy management strategy of dynamic torque distribution was developed. Based on the simulation software AMESim,a hydraulic regeneration system model was built,and the simulation analysis was carried on.The results show:under the premise of no loss of braking effect,regenerative braking and driving process based on energy management strategy,can effectively improve the dynamic performance of the vehicle, increase the braking energy recovery and reuse degree, and improve fuel economy.