METHOD AND APPARATUS FOR ADJUSTING THE GAP OF A FIFTH WHEEL OF A VEHICLE

• US 20110210529A1
• Filed: 02/28/2011
• Published: 09/01/2011
• Est. Priority Date: 02/26/2010
• Status: Abandoned Application

• Current Assignee: Daimler Trucks North America LLC (Mercedes-Benz Group AG)
• Original Assignee: Daimler Trucks North America LLC (Mercedes-Benz Group AG)
• Inventors: Markstaller, Matthew G.
• Application Number:
  US13/036,862
• Publication Number:
  US 20110210529A1
• Time in Patent Office: Days
• US Class Current: 280/438.1
• CPC Class Codes: B62D 53/0814 with adjustment of the clearance between the tractor or the trailer devices modifying the load in tractor-trailer combinations B62D53/068

Abstract

A fifth wheel is movable in fore and aft directions toward and away from the rear wall of a vehicle cab to change the gap between the rear wall and the front wall of a towed trailer. A fifth wheel drive moves the fifth wheel in the respective fore and aft directions including while the vehicle is moving. A fifth wheel controller is operable to control the fifth wheel drive to cause the movement of the fifth wheel in the respective fore and aft directions. The fifth wheel controller can operate in anticipation of the vehicle reaching an upcoming road section to cause the movement of the fifth wheel toward or to a maximum gap position if the gap is not already at the maximum gap position in response to received inputs indicating that additional maneuverability will be required for the vehicle when the vehicle reaches the upcoming road section. The fifth wheel controller can also operate to cause the movement of the fifth wheel toward or to a minimum gap position if the gap is not at the minimum gap position in response to received inputs indicating that additional maneuverability will not be required for the vehicle when the vehicle reaches the upcoming road section and that current vehicle operating conditions do not indicate that additional maneuverability is needed. The fifth wheel controller can also be operable to cause the fifth wheel drive to move the fifth wheel in response to current vehicle conditions.

Claims

1. A vehicle for towing a trailer, the trailer having a front wall, the vehicle comprising:

a cab having a rear wall;

a fifth wheel positioned rearwardly of the rear wall;

a fifth wheel support coupled to the fifth wheel and mounted to the vehicle for movement in respective fore and aft directions toward and away from the rear wall to move the fifth wheel in the respective fore and aft directions with the movement of the fifth wheel support, wherein when the vehicle is towing a trailer coupled to the fifth wheel the movement of the fifth wheel support in a fore direction moves the fifth wheel and the trailer in the fore direction and reduces the gap between the rear wall of the cab and front wall of the towed trailer, and wherein when the vehicle is towing a trailer coupled to the fifth wheel the movement of the fifth wheel support in an aft direction moves the fifth wheel and trailer in the aft direction and increases the gap between the rear wall of the cab and the front wall of the trailer;

a fifth wheel drive for moving the fifth wheel support and thereby the fifth wheel in the fore and aft directions, the fifth wheel drive comprising a jack screw rotatable about its longitudinal axis in respective first and second opposite directions and coupled to the fifth wheel support such that rotation of the jack screw in the first direction moves the fifth wheel support and the fifth wheel in the fore direction and rotation of the jack screw in the second direction moves the fifth wheel support and the fifth wheel in the aft direction;

a motor drivenly coupled to the jack screw and operable in response to motor drive signals to rotate the jack screw in the first and second directions;

a motor controller providing motor drive signals to the motor in response to current vehicle signals corresponding to current vehicle operating conditions, the current vehicle operating conditions comprising at least one of a steering wheel steering angle and yaw rate of the vehicle.

2. A vehicle according to claim 1 wherein the current vehicle operating conditions correspond to at least one of a steering wheel steering angle, yaw rate of the vehicle, and whether an automatic braking system of the vehicle (ABS) is activated.

3. A vehicle according to claim 1 wherein the current vehicle operating conditions correspond to at least one of a steering wheel steering angle, yaw rate of the vehicle, whether an automatic braking system of the vehicle is activated, vehicle brake pedal position, and vehicle speed.

4. A vehicle according to claim 1 wherein the current vehicle operating conditions correspond to a group of current vehicle signals comprising at least all of a vehicle steering wheel steering angle, yaw rate of the vehicle, whether an automatic braking system of the vehicle is activated, vehicle brake pedal position, and vehicle speed.

5. A vehicle according to claim 4 wherein the fifth wheel controller is operable to provide motor drive signals to the motor to cause the motor to rotate the jack screw to move the fifth wheel toward the maximum gap position if the gap is not already at the maximum gap position in response to received input signals indicating that additional maneuverability will be required for the vehicle when the vehicle reaches an upcoming road section along which the vehicle will be traveling;

wherein the fifth wheel controller is also operable to provide motor drive signals to the motor to cause the motor to rotate the jack screw to move the fifth wheel toward the minimum gap position if the gap is not at the minimum gap position in response to received inputs indicating that additional maneuverability will not be required for the vehicle when the vehicle reaches the upcoming road section and current vehicle signals do not correspond to conditions where additional maneuverability of the vehicle is required.

6. A vehicle according to claim 1 wherein the fifth wheel controller is operable to provide motor drive signals to the motor to cause the motor to rotate the jack screw to move the fifth wheel toward the maximum gap position if the gap is not already at the maximum gap position in response to received input signals indicating that additional maneuverability will be required for the vehicle when the vehicle reaches an upcoming road section along which the vehicle will be traveling;

wherein the fifth wheel controller is also operable to provide motor drive signals to the motor to cause the motor to rotate the jack screw to move the fifth wheel toward the minimum gap position if the gap is not at the minimum gap position in response to received inputs indicating that additional maneuverability will not be required for the vehicle when the vehicle reaches the upcoming road section and current vehicle signals do not correspond to conditions where additional maneuverability of the vehicle is required.

7. A vehicle according to claim 6 in which data corresponding to road banking, road curvature, and speed limits of upcoming road sections of a road along which a vehicle will be traveling is stored, the fifth wheel control module being operable to provide motor drive signals to the motor to cause the motor to rotate the jack screw to move the fifth wheel toward the maximum gap position if the fifth wheel is not in the maximum gap position and if the stored data for the upcoming road section has a curvature in excess of a threshold for the speed limit corresponding to a road section, is banked in excess of a threshold for the speed limit along the banked section, or the speed limit is below a threshold.

8. A vehicle according to claim 1 in which data corresponding to road banking, road curvature, and speed limits of upcoming road sections of a road along which a vehicle will be traveling is stored, the fifth wheel control module being operable to provide motor drive signals to the motor to cause the motor to rotate the jack screw to move the fifth wheel toward the maximum gap position if the fifth wheel is not in the maximum gap position and if the stored data for the upcoming road section has a curvature in excess of a threshold for the speed limit corresponding to a road section, is banked in excess of a threshold for the speed limit along the banked section, or the speed limit is below a threshold.

9. A vehicle for towing a trailer, the trailer having a front wall, the vehicle comprising:

a cab having a rear wall;

a fifth wheel coupled to the vehicle rearwardly of the rear wall and movable in fore and aft directions toward and away from the rear wall, wherein when the vehicle is towing a trailer, the trailer is coupled to the fifth wheel and movement of the fifth wheel in a fore direction toward a minimum gap position decreases the spacing between the rear wall of the cab and the front wall of the trailer and movement of the fifth wheel in an aft direction toward a maximum gap position increases the gap between the rear wall of the cab and the front wall of the trailer;

a fifth wheel drive that is operably coupled to the fifth wheel for moving the fifth wheel in the respective fore and aft directions;

a fifth wheel controller coupled to the fifth wheel drive and operable to control the fifth wheel drive to cause the movement of the fifth wheel in the respective fore and aft directions;

the fifth wheel controller being operable to control the fifth wheel drive to move the fifth wheel toward the maximum gap position if the gap is not already at the maximum gap position in response to received inputs indicating that additional maneuverability will be required for the vehicle when the vehicle reaches an upcoming section of a road along which the vehicle is traveling.

10. A vehicle according to claim 9 wherein the fifth wheel controller is also operable to control the fifth wheel drive to move the fifth wheel toward the minimum gap position if the gap is not at the minimum gap position in response to received inputs indicating that additional maneuverability will not be required for the vehicle when the vehicle reaches the upcoming road section and wherein signals corresponding to current vehicle conditions delivered to the fifth wheel controller do not represent conditions where additional maneuvering is currently needed by the vehicle.

11. A vehicle according to claim 10 wherein the upcoming section of the road has curves and the wheel controller is operable to control the fifth wheel drive to move the fifth wheel toward the maximum gap position from the current gap position if the current gap position is not the maximum gap position.

12. A vehicle according to claim 10 wherein the upcoming section of the road has a lower speed limit than the section of the road along which the vehicle is currently traveling and the fifth wheel controller is operable to control the fifth wheel drive to move the fifth wheel toward the maximum gap position from the current gap position if the current gap position is not the maximum gap position.

13. A vehicle according to claim 9 wherein the fifth wheel controller is operable to control the fifth wheel drive to move the fifth wheel in response to information on upcoming road sections stored in a map data base.

14. A vehicle according to claim 10 wherein the upcoming section of the road is straighter than the current road section along which the vehicle is currently traveling, and wherein the fifth wheel controller is operable to control the fifth wheel drive to move the fifth wheel toward the minimum gap position from the current gap position if the current gap position is not the minimum gap position.

15. A vehicle according to claim 10 wherein the upcoming section of the road is straighter than the current road section along which the vehicle is currently traveling, and wherein the fifth wheel controller is operable to control the fifth wheel drive to move the fifth wheel toward the minimum gap position from the current gap position if the current gap position is not the minimum gap position and the current vehicle conditions do not indicate a high maneuverability event selected from the group comprising activation of an automatic braking system, a hard braking event corresponding to a brake pedal position exceeding a threshold brake pedal position, a steering angle in excess of a threshold and at least one yaw rate sensor indicating a vehicle yaw rate in excess of a threshold.

16. A vehicle according to claim 10 wherein the upcoming section of the road has a lower speed limit than the road section along which the vehicle is currently traveling, and wherein the fifth wheel controller is operable to control the fifth wheel drive to move the fifth wheel toward the minimum gap position from the current gap position if the current gap position is not the minimum gap position.

17. A vehicle according to claim 9 wherein the upcoming section of the road has a higher speed limit than the road section along which the vehicle is currently traveling, and wherein the fifth wheel controller is operable to control the fifth wheel drive to move the fifth wheel toward the minimum gap position from the current gap position if the current gap position is not the minimum gap position and the current vehicle conditions do not indicate a high maneuverability event selected from the group comprising activation of an automatic braking system, a hard braking event corresponding to a brake pedal position exceeding a threshold brake pedal position, a steering angle in excess of a threshold, and at least one yaw rate sensor indicating a vehicle yaw rate in excess of a threshold.

18. A vehicle according to claim 10 wherein the upcoming section of the road has a lower speed limit than the speed limit of the road section along which the vehicle is currently traveling, the lower speed limit being lower than a low speed threshold, and wherein the fifth wheel controller is operable to control the fifth wheel drive to move the fifth wheel the maximum gap position if the speed limit of the upcoming road section does not exceed a low speed threshold.

19. A vehicle according to claim 10 wherein the upcoming section of the road has a higher speed limit than the road section along which the vehicle is currently traveling, and wherein the fifth wheel controller is operable to control the fifth wheel drive to move the fifth wheel the minimum gap position if the speed limit of the upcoming road section exceeds a high speed threshold.

20. A vehicle according to claim 9 wherein the fifth wheel controller is operable to control the fifth wheel drive to move the fifth wheel toward the minimum gap position if the current speed exceeds a high speed threshold and the current vehicle operating conditions do not indicate a high maneuverability event selected from the group comprising cycling of an automatic braking system, a hard braking event corresponding to a brake pedal position at a threshold brake position, a steering angle in excess of a threshold and at least one yaw rate sensor indicating a vehicle yaw rate in excess of a threshold.

21. A vehicle according to claim 10 in which the fifth wheel controller is operable in response to current vehicle signals corresponding to current vehicle operating conditions to cause the fifth wheel drive to move the fifth wheel toward the maximum gap position if the gap is not already at the maximum gap position in response to received current vehicle signals indicating that additional maneuverability is required for the vehicle, the fifth wheel being operable in response to current vehicle signals corresponding to current vehicle conditions to cause the fifth wheel drive to move the fifth wheel toward the minimum gap position if the gap is not already at the minimum gap position in response to received current vehicle signals indicating that additional maneuverability is not required for the vehicle and in the absence of input signals indicating that additional maneuverability will be required for the vehicle when the vehicle reaches an upcoming section of a road along which the vehicle is traveling.

22. A vehicle according to claim 20 wherein the current vehicle signals correspond to or indicate at least one of a vehicle steering angle exceeding a threshold steering angle and vehicle yaw rate in excess of a yaw rate threshold.

23. A vehicle according to claim 20 wherein the current vehicle signals correspond to or indicate at least one of a vehicle steering angle exceeding a threshold steering angle, vehicle yaw rate in excess of a yaw rate threshold and whether an automatic braking system is activated.

24. A vehicle according to claim 20 wherein the current vehicle signals correspond to or indicate at least one of a vehicle steering angle exceeding a threshold steering angle, vehicle yaw rate in excess of a vehicle yaw rate threshold, whether an automatic braking system is activated, whether the vehicle brakes are being applied in excess of a brake threshold, and vehicle speed.

25. A vehicle according to claim 24 wherein the current vehicle signals correspond to or indicate a group of current vehicle signals consisting at least of a vehicle steering angle exceeding a threshold steering angle, vehicle yaw rate in excess of a vehicle yaw rate threshold, whether an automatic braking system is activated, whether the vehicle brakes are being applied in excess of a threshold, and vehicle speed.

26. A vehicle for towing a trailer, the trailer having a front wall, the vehicle comprising:

a cab having a rear wall;

a fifth wheel positioned rearwardly of the rear wall;

a fifth wheel support coupled to the fifth wheel and mounted to the vehicle for movement in respective fore and aft directions toward and away from the rear wall to move the fifth wheel in the respective fore and aft directions with the movement of the fifth wheel support, wherein when the vehicle is towing a trailer coupled to the fifth wheel the movement of the fifth wheel support in a fore direction moves the fifth wheel and the trailer in the fore direction and reduces the gap between the rear wall of the cab and front wall of the towed trailer, and wherein when the vehicle is towing a trailer coupled to the fifth wheel the movement of the fifth wheel support in an aft direction moves the fifth wheel and trailer in the aft direction and increases the gap between the rear wall of the cab and the front wall of the trailer, the fifth wheel being movable in either direction between a maximum gap position and a minimum gap position;

a fifth wheel drive for moving the fifth wheel support and thereby the fifth wheel in the fore and aft directions, the fifth wheel drive comprising a jack screw rotatable about its longitudinal axis in respective first and second opposite directions and coupled to the fifth wheel support such that rotation of the jack screw in the first direction moves the fifth wheel support and the fifth wheel in the fore direction and rotation of the jack screw in the second direction moves the fifth wheel support and the fifth wheel in the aft direction, the fifth wheel drive also comprising a motor drivenly coupled to the jack screw and operable in response to motor drive signals to rotate the jack screw in the first and second directions;

a motor controller operable to control the fifth wheel drive to cause respective fore and aft direction movement of the fifth wheel;

wherein in response to a signal indicating the activation of an automatic braking system, the motor controller is operable to cause the fifth wheel drive to move the fifth wheel support and thereby the fifth wheel toward the maximum gap position if the fifth wheel is not in the maximum gap position.

27. A vehicle for towing a trailer, the trailer having a front wall, the vehicle comprising:

a cab having a rear wall;

a fifth wheel positioned rearwardly of the rear wall;

a fifth wheel support coupled to the fifth wheel and mounted to the vehicle for movement in respective fore and aft directions toward and away from the rear wall to move the fifth wheel in the respective fore and aft directions with the movement of the fifth wheel support, wherein when the vehicle is towing a trailer coupled to the fifth wheel the movement of the fifth wheel support in a fore direction moves the fifth wheel and the trailer in the fore direction and reduces the gap between the rear wall of the cab and front wall of the towed trailer, and wherein when the vehicle is towing a trailer coupled to the fifth wheel the movement of the fifth wheel support in an aft direction moves the fifth wheel and trailer in the aft direction and increases the gap between the rear wall of the cab and the front wall of the trailer, the fifth wheel being movable in either direction between a maximum gap position and a minimum gap position;

a fifth wheel drive for moving the fifth wheel support and thereby the fifth wheel in the fore and aft directions, the fifth wheel drive comprising a jack screw rotatable about its longitudinal axis in respective first and second opposite directions and coupled to the fifth wheel support such that rotation of the jack screw in the first direction moves the fifth wheel support and the fifth wheel in the fore direction and rotation of the jack screw in the second direction moves the fifth wheel support and the fifth wheel in the aft direction, the fifth wheel drive also comprising a motor drivenly coupled to the jack screw and operable in response to motor drive signals to rotate the jack screw in the first and second directions;

a motor controller operable to control the fifth wheel drive to cause respective fore and aft direction movement of the fifth wheel;

wherein in response to signals corresponding to current steering angle and current vehicle speed, the motor controller is operable to cause the fifth wheel drive to move the fifth wheel toward the maximum fifth wheel position, if the fifth wheel is not in the maximum position, in the event the steering wheel angle exceeds a threshold steering wheel angle for the current vehicle speed.

28. A vehicle for towing a trailer, the trailer having a front wall, the vehicle comprising:

a cab having a rear wall;

a fifth wheel positioned rearwardly of the rear wall;

a fifth wheel support coupled to the fifth wheel and mounted to the vehicle for movement in respective fore and aft directions toward and away from the rear wall to move the fifth wheel in the respective fore and aft directions with the movement of the fifth wheel support, wherein when the vehicle is towing a trailer coupled to the fifth wheel the movement of the fifth wheel support in a fore direction moves the fifth wheel and the trailer in the fore direction and reduces the gap between the rear wall of the cab and front wall of the towed trailer, and wherein when the vehicle is towing a trailer coupled to the fifth wheel the movement of the fifth wheel support in an aft direction moves the fifth wheel and trailer in the aft direction and increases the gap between the rear wall of the cab and the front wall of the trailer, the fifth wheel being movable in either direction between a maximum gap position and a minimum gap position;

a fifth wheel drive for moving the fifth wheel support and thereby the fifth wheel in the fore and aft directions, the fifth wheel drive comprising a jack screw rotatable about its longitudinal axis in respective first and second opposite directions and coupled to the fifth wheel support such that rotation of the jack screw in the first direction moves the fifth wheel support and the fifth wheel in the fore direction and rotation of the jack screw in the second direction moves the fifth wheel support and the fifth wheel in the aft direction, the fifth wheel drive also comprising a motor drivenly coupled to the jack screw and operable in response to motor drive signals to rotate the jack screw in the first and second directions;

a motor controller operable to control the fifth wheel drive to cause respective fore and aft direction movement of the fifth wheel;

the fifth wheel controller also being operable to control the fifth wheel drive to move the fifth wheel toward the maximum gap position if the gap is not already at the maximum gap position in response to received input signals indicating that additional maneuverability will be required for the vehicle when the vehicle reaches an upcoming section of a road along which the vehicle is traveling, wherein the input signals indicating that additional maneuverability will be required comprise at least the curvature of the upcoming road section and the speed limit for the upcoming road section, the fifth wheel controller also being operable to control the fifth wheel drive to move the fifth wheel toward the minimum gap position if the gap is not at the minimum gap position in response to received inputs indicating that additional maneuverability will not be required for the vehicle when the vehicle reaches the upcoming road section and current vehicle signals provided to the controller do not correspond to current vehicle conditions for which increased maneuverability is required.