WHEELED VEHICLE RECUPERATIVE REVERSIBLE STEPLESS HYDRAULIC TRANSMISSION Russian patent published in 2005 - IPC

FIELD: mechanical engineering; vehicle hydraulic drives.

SUBSTANCE: proposed recuperative reversible stepless hydraulic transmission of wheeled vehicle contains drive engine 5, recuperator 20 with overrunning clutch 24, controllable reversible hydraulic machine 18 with pressure and suction and control plunger 8 communicating with hydraulic control system through pipelines, follow-up hydraulic booster with variable-capacity pump 12 of reverse capacity, four non-controllable hydraulic machines 29-32. Each of said hydraulic machines has vehicle wheel, and wheels of vehicle are in contact with road pavement. Recuperator 20 is made in form of planetary reduction gear whose carrier 19 is connected with pump 12 and with hydraulic machine 18 provided with two diametric pressure and two diametric suction spaces and connected with hydraulic machines 29-32 by pipelines. Hydraulic machine 18 contains "floating" plunger 33 with two cylindrical grooves between two end face spaces and "polar" plunger by channels of which end face spaces of floating plunger 33 are communicated, overlapped or reversed with pressure and suction spaces of hydraulic machine 18. Cylindrical grooves of floating plunger 33 synchronously overlap or hydraulically communicate two pressure and two suction spaces of hydraulic machine 18. Lever 6 of polar plunger is mechanically connected with corresponding slot of plate 3 of vehicle speed and reverse control member.

EFFECT: reduced number of control members, dispensing with brake system improved cross-country capacity of vehicle, reduced fuel consumption, reduced acceleration time, increased efficiency.

5 cl, 11 dwg