Increase Traction with Hydraulic Assist Drive

This paper describes and evaluates a two-wheel assist hydrostatic drive add-on unit for combines and tractors over 75 kW (100 hp). This hydrostatic add-on unit, manufactured by Mud-Hog Drive Systems, consists of two hydraulic motors, two Torque-Hubs** and associated controls providing four-wheel drive advantages to a vehicle. Included is a predictive traction model which depicts advantages of Mud-Hog units in varying traction conditions.