DISPLACEMENT HYDRAULIC DRIVE Russian patent published in 2011 - IPC F15B9/14 F16H47/02 F16H61/42 

FIELD: transport.

SUBSTANCE: hydraulic drive consists of adjustable electrically driven reversible pump and working volume control mechanism, power hydraulic lines communicating constant-volume hydraulic motor and variable-volume hydraulic motor via reduction gear with load shaft. Said first and second hydraulic lines are provided with first and second pressure gages connected with pressure control units to vary amount and direction of torque of adjustable hydraulic motor. Pressure control unit has setter with adder to generate tolerable pressure signal. Said control unit comprises first nonlinear unit with proportional positive characteristic and second nonlinear unit with proportional negative characteristic.

EFFECT: expanded operating performances.

3 cl, 1 dwg