Patent ID: 6311487
Filing Date: 2001-11-06
Classification: B60K,B60L,F03D,F05B,Y02E,Y02T

Abstract:
An electromechanical hydraulic drive system for a vehicle comprising:a pump for providing a flow of one directional fluid through said system;a hydraulic motor having a central shaft extending longitudinally therethrough, and a plurality of sets of vanes attached to said shaft, said sets of vanes being spaced along said central shaft and being configured for forcing said shaft to spin in a desired direction for reverse, forward, or braking motion of the vehicle, said hydraulic motor being in fluid communication with said pump for receiving a flow of fluid therefrom and converting the energy of the fluid flow to mechanical energy by the spinning of said central shaft; anda variable speed drive connected to said central shaft of said hydraulic motor, said variable speed drive including a variable speed drive shaft communicating with a differential of the vehicle, said variable speed drive further including means for transferring the mechanical energy of said central shaft to the variable speed drive shaft at a desired speed and direction.