Drive system for vehicles with at least two drivable vehicle axles

Method for the operation of a drive system for vehicles with at least two drivable vehicle axles, wherein the drive system has an infinitely variable transmission driven by a prime mover, the transmission having no intermediate axle differential and including a first motor which is propulsively connected to a first vehicle axle and a second motor which is propulsively connected to a second vehicle axle, and a clutch by which a propulsive connection can be made between at least the first and second vehicle axle;

• the method comprising:
• providing a sensor to detect driving state of the vehicle;
• and
• adjusting the torque transmission capacity of the clutch by varying the condition of engagement of the clutch in a range of torque transmission conditions between a fully engaged position and a fully disengaged position as a function of the driving state of the vehicle detected by the sensor.

A method for the operation of a drive system for vehicles with at least two drivable vehicle axles, wherein the drive system has an infinitely variable transmission with no intermediate axle differential comprising at least a first and a second motor, wherein the first motor is propulsively connected to a first vehicle axle and the second motor is propulsively connected to a second vehicle axle, and a clutch, by which a propulsive connection can be made between at least the first and second vehicle axle, and wherein the clutch is adjustable in a range between an engaged position and a disengaged position, the method comprising:

• detecting a driving state of the vehicle;
• adjusting the torque transmission capacity of the clutch as a function of the driving state of the vehicle detected by adjusting the position of the clutch;
• determining the upper and lower limit values for the rotational speed ratio of the vehicle axles as a function of the steering angle;
• and
• adjusting the torque transmission capacity of the clutch in such a manner that whenever an upper limit value is exceeded or whenever a lower limit value is not reached the torque transmission capacity of the clutch is increased.