Parallel hydraulic hybrid vehicle (PHHV) involves two power sources that work together:engine and hydraulic hybrid,which makes the PHHV more complex.In order to solve this problem,the front-mounted parallel structure was introduced into the vehicle structure.The functions and objectives of the PHHV were analyzed,and the working mode of the PHHV was determined.On this basis,MATLAB/Simulink and dSPACE controller were used to establish the vehicle control system,the simulation analysis were carried out.And a series of experiments were carried out in the experimental vehicle by using this control system.The results show that the fuel saving effect is apparent by applying the front-mounted parallel hydraulic hybrid system on heavy vehicles;by introducing the control strategy involving buffer coefficients,the impact brought by the hybrid systems or running separate vehicles can be reduced effectively;with regard to the braking performance,the vehicle can slow down to the target speed in shorter time by using the constant torque control strategy.