Device and method for determining a highest allowed velocity of a vehicle
AssigneeVolvo Articulated Haulers AB
InventorsPer-Åke Persson, Göran Eliasson, Thomas Engström
Life of this patent
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Abstract
Method and device for the determining a maximum allowed velocity (Vmax) for a vehicle (1) when going downhill (2). The invention includes a detector (11) for detection of current inclination (alpha) of the vehicle (1) in relation to a horizontal plane (3), and means (10) for the determination of a value relating to the maximum allowed velocity (Vmax) of the vehicle in dependence of at least the value of the inclination (alpha). The invention also relates to a procedure for the control of the velocity. The invention provides a procedure for velocity control that takes the inclination into account when going downhill.
Claims8
An arrangement for determining a maximum allowable velocity (Vmax) of a vehicle descending downhill, the arrangement comprising:
- a vehicle comprising a wheel brake system and a retarder constituting an additional braking function on the vehicle;
- a detector that detects when the vehicle is descending downhill;
- and
- a computing means for determining a current braking cability of the retarder and a maximum allowable descending velocity (Vmax) of the vehicle that must be maintained in order to enable the retarder to control the descending vehicle, to the exclusion of the wheel brake system, during the detected downhill descent.
A method for determining a maximum allowable velocity (Vmax) of a vehicle descending downhill, the method comprising:
- providing a vehicle comprising a wheel brake system and a retarder constituting an additional braking function on the vehicle;
- detecting when the vehicle is descending downhill;
- and
- determining a current braking cability of the retarder and a maximum allowable descending velocity (Vmax) of the vehicle that must be maintained in order to enable the retarder to control the descending vehicle, to the exclusion of the wheel brake system, during the detected downhill descent.
Dependencies are inferred from the claim text.