Vehicle wheel slippage control
AssigneeAGCO International GmbH
InventorsRichard Heindl, Martin Brenninger
Life of this patent
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Abstract
An agricultural vehicle and method of controlling the same are provided, the vehicle having a motive power unit providing a driving torque to at least one driven wheel and having at least one tire or track frictionally coupled with the periphery of the driven wheel. A vehicle operating parameter is controlled in dependence on the driving torque and a slippage characteristic relating the respective driving torque at which the frictional coupling between driven wheel and tire or track begins to slip for a range of vehicle operating parameter values. The operating parameter is suitably a tire pressure or track tension, and the control may involve reducing driving torque or increasing pressure/tension to prevent slipping.
Claims15
A control system for an agricultural vehicle having a motive power unit providing a driving torque to at least one driven wheel having a periphery with a rim and having at least one pneumatic tyre mounted on and frictionally coupled with the rim of the at least one driven wheel;
- the pneumatic tyre having an air pressure;
- the control system being arranged to control the air pressure in dependence on a performance measurement of the vehicle and a slippage characteristic of the at least one pneumatic tire;
- characterised in that the performance measurement is of the driving torque and the slippage characteristic related to the respective driving torque at which the frictional coupling between the at least one driven wheel and the pneumatic tyre begins to slip for each of a plurality of air pressure values.
A method of controlling an agricultural vehicle having a motive power unit providing a driving torque to at least one driven wheel having a periphery with a rim and having at least one pneumatic tyre frictionally coupled with the rim of the at least one driven wheel, the pneumatic tyre having an air pressure and the method comprising:
- controlling the air pressure in dependence on a performance measurement of the vehicle and a slippage characteristic of the;
- pneumatic tyre, characterised in that the performance measurement is of the driving torque and the slippage characteristic related to the respective driving torque at which the frictional coupling between the at least one driven wheel and the pneumatic tyre begins to slip for each of a plurality of air pressure values.
Dependencies are inferred from the claim text.