Vehicle, method and steering system for vehicle
A vehicle, method and steering system for a vehicle in which the steering system includes a stub axle articulated on a king pin. The king pin is configured to be fixed to an element spring suspension-mounted in the vehicle. The steering system includes at least one power unit fixed to the stub axle, and the power unit transmits a torque to the king pin.
1. A steering system ( 1 ) for a vehicle, said system comprising:
a stub axle ( 2 ) articulated on a king pin ( 3 ) configured to be fixed relative to an axle element ( 4 ) of a spring suspension-mounted in the vehicle; and
at least one power unit ( 5 ) fixed to the stub axle ( 2 ), the power unit ( 5 ) transmitting torque to the king pin ( 3 ).
2. The steering system as recited in claim 1 , further comprising:
a transmission ( 6 , 7 ) that transmits torque from the power unit ( 5 ) to the king pin ( 3 ).
3. The steering system as recited in claim 2 , wherein said transmission ( 6 , 7 ) further comprises a gear for adjusting the torque of the power unit ( 5 ).
4. The steering system as recited in claim 2 , wherein said transmission ( 6 , 7 ) further comprises a toothed gear device.
5. The steering system as recited in claim 1 , wherein said at least one power unit ( 5 ) is an hydraulic motor.
6. The steering system as recited in claim 1 , wherein said at least one power unit ( 5 ) is an electric motor.
7. The steering system as recited in claim 1 , wherein said at least one power unit ( 5 ) is electrically controllable.
8. The steering system as recited in claim 1 , wherein said at least one power unit ( 5 ) is located so that a longitudinal axis of the power unit ( 5 ) is not parallel to the longitudinal axis of the king pin ( 3 ).
9. The steering system as recited in claim 1 , further comprising:
a sensor that provides information on the angular difference between the stub axle ( 2 ) and the king pin ( 3 ).
10. The steering system as recited in claim 1 , further comprising:
a sensor that provides information on the torque acting on the stub axle ( 2 ).
11. A method of steering a vehicle having at least two stub axles that are each articulated on a separate king pin, the king pins being fixed to at least one axle element spring suspension-mounted in the vehicle, said method comprising:
turning each stub axle in relation to a respective king pin by means of at least two power units, wherein each power unit is fitted to a separate stub axle.
12. The method as recited in claim 11 , wherein each power unit is electrically controlled by a control signal.
13. The method as recited in claim 12 , wherein the control signals are a function of the speed of the vehicle.
14. The method as recited in claim 11 , further comprising:
delivering independent control signals to each power unit.
15. The method as recited in claim 14 , wherein the control signals are a function of the speed of the vehicle.
16. A vehicle comprising at least two steering systems wherein each steering system comprises:
a stub axle ( 2 ) articulated on a king pin ( 3 ) configured to be fixed relative to an axle element ( 4 ) of a spring suspension-mounted in the vehicle; and
at least one power unit ( 5 ) fixed to the stub axle ( 2 ), the power unit ( 5 ) transmitting torque to the king pin ( 3 ).
17. The vehicle as recited in claim 16 , wherein the steering system further comprises a transmission ( 6 , 7 ) that transmits torque from the power unit ( 5 ) to the king pin ( 3 ).
18. The vehicle as recited in claim 17 , wherein said transmission ( 6 , 7 ) further comprises a gear for adjusting the torque of the power unit ( 5 ).
19. The vehicle as recited in claim 17 , wherein said transmission ( 6 , 7 ) further comprises a toothed gear device.
20. The vehicle as recited in claim 16 , wherein said at least one power unit ( 5 ) is located so that a longitudinal axis of the power unit ( 5 ) is not parallel to the longitudinal axis of the king pin ( 3 ).
21. The vehicle as recited in claim 16 , wherein the steering system further comprises a sensor that provides information on the angular difference between the stub axle ( 2 ) and the king pin ( 3 ).
22. The vehicle as recited in claim 16 , wherein the steering system further comprises a sensor that provides information on the torque acting on the stub axle ( 2 ).