基于液压自由活塞发动机动力系统的能量管理研究

n integrated propulsion system based on HFPE was proposed. The hydraulic system consists of the common pressure rail, hydraulic transformer, and fixed displacement pump/motor. The main components are selected to build the Matlab/Simulink and AMESim model. The control strategies of driving and braking are introduced as well. Combined with the characteristics of HFPE the vehicle adopts the "thermostat plus power following" energy management. The simulation results show that the vehicle can meet the needs of the condition when the vehicle is on the city road. The effects on the fuel consumption of the control variables are studied, and an optimized parameter set for energy management is acquired.