HYDROSTATIC DIFFERENTIAL Russian patent published in 1999 - IPC

FIELD: power engineering; transmissions of crawler and wheeled vehicles. SUBSTANCE: stator is installed in housing of differential accommodating bearing supports for drive shaft and two axle-shafts. Stator is engaged through gear train with drive shaft. Two hydraulic clutches installed in housing have common stator and two rotor and are connected with axle-shafts. Like pressure spaces between rotor and eccentric inner surface of stator are connected by pipe with valve. Other like spaces are connected by pipe through variable-capacity rotary-abutment pump installed on housing. This pump is driven by separate shaft. Operating liquid pressure fluctuation dampers are installed in pipes. EFFECT: provision of close control of angular speed differences of axle-shafts irrespective of difference in axle-shaft antitorque moments with preservation of average rotational speed and possibility of rotation of axle-shafts in opposite directions at stationary drive shaft. 2 dwg