A constant torque braking strategy for tracked vehicle hydrostatic and hydraulic auxiliary braking system is studied.Combining the test and theoretical analysis results

the influence law of coupler filling liquid quantity and hydraulic pump discharge variation to vehicle braking force under the hydrodynamic braking and hydrostatic braking work condition is obtained.Absorbing the advantages of hydrodynamic braking and hydrostatic braking

aiming at the work condition of hydrodynamic-hydrostatic braking

the constant torque braking strategy is built.The vehicle constant torque braking is achieved through the automatic regulation of coupler filling liquid quantity and hydraulic pump discharge.The efficiency is verified through the comparison of energy recovery and braking length before and after using constant torque braking strategy.