Patent ID: 9604537
Date: 2017-03-28
CPC Classifications: B60K,B62D

Claim:
1. A vehicle comprising a chassis, a driving axle and a driven axle each connected to wheels, and a primary motor rotatably driving said driving axle, said vehicle further comprising a hydraulic pump and a hydraulic motor configured to selectively provide hydraulic assistance for driving the wheels of the driven axle, said hydraulic motor and hydraulic pump being respectively mounted on the driven axle and on the driving axle, are each rotatably connected on the one hand to the chassis, and on the other hand to said driven axle and driving axle respectively, and are configured so that their operation provides driving of the wheels of the driven axle by sampling of the torque applied to the driving axle, wherein the driving axle comprises a differential defining two first output semi-axles on which respective wheels are mounted, said differential comprising a differential housing fitted with housing pinions adapted to cooperate with pinions each connected to a corresponding one of said two first output semi-axles, rotation of the housing rotatably driving said first output semi-axles at different speeds, the hydraulic pump comprising a rotor and a stator, the stator being mounted fixed relative to the chassis and the rotor being rotatably connected to the housing of the differential, the hydraulic pump being rotatably driven at a speed equal to the average speed of the two first output semi-axles.