System and method for controlling the speed of a track-driven work vehicle based on monitored loads to avoid track overheating

Patent metadata

Field	Value
Publication number	US-9855843-B2
Application number	US-201615051911-A
Country	US
Kind code	B2
Filing date	Feb 24, 2016
Priority date	Feb 24, 2016
Publication date	Jan 2, 2018
Grant date	Jan 2, 2018

Abstract

A method for automatically controlling vehicle speeds of a track-based work vehicle may include monitoring, with a computing device, a load transmitted through a pivot pin of a track assembly of the work vehicle and determining, with the computing device, a speed limit setting for the work vehicle based on the monitored load, wherein the speed limit setting is associated with maintaining an operating temperature of a track of the track assembly below a predetermined temperature threshold. In addition, the method may include automatically limiting, with the computing device, a vehicle speed of the work vehicle based on the determined speed limit setting.

First claim

What is claimed is:

1. A method for automatically controlling vehicle speeds of a track-based work vehicle, the method comprising:
monitoring, with a computing device, a load transmitted through a pivot pin of a track assembly of the work vehicle;
determining, with the computing device, a speed limit setting for the work vehicle based on the monitored load, the speed limit setting being associated with maintaining an operating temperature of a track of the track assembly below a predetermined temperature threshold; and
automatically limiting, with the computing device, a vehicle speed of the work vehicle based on the determined speed limit setting.

2. The method of claim 1 , wherein the pivot pin is configured to pivotally couple an undercarriage support beam of the track assembly to a chassis of the work vehicle.

3. The method of claim 2 , wherein the pivot pin is located inboard or outboard of a drive wheel of the track assembly.

4. The method of claim 1 , wherein monitoring the load transmitted through the pivot pin comprises monitoring the load using a load sensor provided in operative association with the pivot pin.

5. The method of claim 4 , wherein the load sensor is configured to directly sense the load transmitted through the pivot pin.

6. The method of claim 4 , wherein the pivot pin corresponds to a load-sensing pin, the load sensor being integrated into the pivot pin.

7. The method of claim 1 , wherein determining the speed limit setting comprises referencing a look-up table stored within memory of the computing device, the look-up table correlating a plurality of different load values for the monitored load to a plurality of different speed limit settings based on the predetermined temperature threshold associated with the track.

8. The method of claim 1 , wherein determining the speed limit setting comprises calculating the speed limit setting based on a mathematical function stored within memory of the computing device that correlates the monitored load to a given speed limit for the work vehicle based on the predetermined temperature threshold associated with the track.

9. The method of claim 1 , wherein determining the speed limit setting comprises setting the speed limit setting to a first maximum speed limit when the monitored load exceeds a predetermined load threshold.

10. The method of claim 9 , further comprising:
determining that the monitored load has exceeded the predetermined load threshold for a given period of time; and
adjusting the speed limit setting for the work vehicle to a second maximum speed limit, wherein the second maximum speed limit is less than the first maximum speed limit.

11. The method of claim 1 , wherein automatically limiting the vehicle speed comprises automatically controlling at least one of an engine or a transmission of the work vehicle such that vehicle speed is maintained at or below a maximum speed associated with the speed limit setting.

12. The method of claim 1 , wherein the track is formed from an elastomeric material.

13. A system for automatically controlling vehicle speeds of a track-based work vehicle, the system comprising:
a track assembly including an undercarriage support beam and a drive wheel configured to engage a track, the track assembly further including a pivot pin configured to pivotally couple the undercarriage support beam to a chassis of the work vehicle;
a load sensor configured to monitor a load transmitted through the pivot pin; and
a controller communicatively coupled to the load sensor, the controller being configured to determine a speed limit setting for the work vehicle based on the monitored load and automatically limit a vehicle speed of the work vehicle based on the determined speed limit setting,
wherein the speed limit setting is associated with maintaining an operating temperature of the track below a predetermined temperature threshold.

14. The system of claim 13 , wherein the pivot pin is located inboard or outboard of the drive wheel.

15. The system of claim 13 , wherein the load sensor is configured to directly sense the load transmitted through the pivot pin.

16. The system of claim 13 , wherein the pivot pin corresponds to a load-sensing pin, the load sensor being integrated into the pivot pin.

17. The system of claim 13 , wherein the controller is configured to determine the speed limit setting by referencing a look-up table stored within memory of the controller, the look-up table correlating a plurality of different load values for the monitored load to a plurality of different speed limit settings based on the predetermined temperature threshold associated with the track.

18. The system of claim 13 , wherein the controller is configured to determine the speed limit setting using a mathematical function that correlates the monitored load to a given speed limit for the work vehicle based on the predetermined temperature threshold associated with the track.

19. The system of claim 13 , wherein the controller is configured to automatically control at least one of an engine or a transmission of the work vehicle such that vehicle speed is maintained at or below a maximum speed associated with the speed limit setting.

20. The system of claim 13 , wherein the track is formed from an elastomeric material.

Assignees

• Cnh Ind America Llc
• Cnh Ind America Llc

Inventors

• Vik Brian
• Novacek Jason
• Krogen Mark
• Tveito David
• Stoltman Russell

Classifications

• B60K2031/0091

  Speed limiters or speed cutters · CPC title

• B60W10/10

  including control of change-speed gearings · CPC title

• B60K31/00 Primary

  Vehicle fittings, acting on a single sub-unit only, for automatically controlling vehicle speed, i.e. preventing speed from exceeding an arbitrarily established velocity or maintaining speed at a particular velocity, as selected by the vehicle operator · CPC title

• B60W2530/10

  Weight · CPC title

• B60Y2300/18

  Propelling the vehicle · CPC title