MOMENTREGULATOR FOR EN HYDROSTATISK DRIVANORDNING HOS ETT FORDON OCH FORFARANDE FOR REGLERING AV DEN HYDROSTATISKA DRIVANORDNINGEN

摘要

The present invention is directed to a torque control with overspeed regulation and a method of controlling a hydrostatic drive for use in an auxiliary wheel drive of a vehicle which has both primary driven wheels and auxiliary driven wheels. The torque control permits maximum torque drive of the auxiliary wheels when the primary driven wheels slip but yet prevents overspeed operation of the auxiliary wheels. Preferably the torque control with overspeed regulation has both an aggressive control and a sensitivity control so that the auxiliary wheel drive can be selectively modulated with respect to the primary wheel drive.