System and method for determining axle load

Patent metadata

Field	Value
Publication number	US-12130169-B2
Application number	US-202217936808-A
Country	US
Kind code	B2
Filing date	Sep 29, 2022
Priority date	Jun 13, 2019
Publication date	Oct 29, 2024
Grant date	Oct 29, 2024

Abstract

Systems for estimating an axle load of a vehicle wherein axle load is estimated in response to an angle between two components of an axle. The angle may change as weight is added to or removed from the axle such that axle load may be determined as a function of the angle.

First claim

The invention claimed is:

1. A system for estimating axle load of a vehicle, comprising:
an axle system including axle components, wherein the axle components include an axle, a first knuckle, a second knuckle, a first kingpin, a second kingpin, and a tie rod;
an angle sensor positioned proximate to one of the axle components; and
a controller including executable instructions stored in non-transitory memory that cause the controller to:
estimate the axle load of the vehicle in response to one or more angles between two or more of the axle components, and
adjust operation of a system of the vehicle in response to the estimated axle load of the vehicle,
wherein the axle system is free to expand and contract without the angle sensor separating from the axle system.

2. The system of claim 1 , wherein the system is a braking system.

3. The system of claim 1 , wherein the system is a propulsion system.

4. The system of claim 1 , wherein the system is a navigation system.

5. The system of claim 1 , further comprising communicating the estimated axle load to a system that is external to the vehicle.

6. The system of claim 1 , wherein the expansion and contraction of the axle system is due to ambient temperature.

7. The system of claim 1 , wherein the axle components form a trapezoid-shaped structure.

8. The system of claim 7 , wherein the axle and the tie rod form two parallel sides of the trapezoid-shaped structure.

9. A system for estimating axle load of a vehicle, comprising:
an axle system including axle components that form a trapezoid-shape structure;
an angle sensor positioned proximate to one of the axle components, wherein the axle system is free to expand and contract without the angle sensor separating from the axle system; and
a controller including executable instructions stored in non-transitory memory that cause the controller to:
estimate the axle load of the vehicle in response to one or more angles between two or more of the axle components, and
adjust operation of a system of the vehicle in response to the estimated axle load of the vehicle.

10. The system of claim 9 , wherein two or more of the axle components include a knuckle and a tie rod.

11. The system of claim 9 , wherein the angle sensor is coupled to the axle system.

12. The system of claim 9 , wherein the axle system influences a toe angle of the vehicle.

13. A system for estimating axle load of a vehicle, comprising:
an axle system including axle components;
an angle sensor positioned proximate to one of the axle components, wherein the axle system is free to expand and contract without the angle sensor separating from the axle system; and
a controller including executable instructions stored in non-transitory memory that cause the controller to:
estimate the axle load of the vehicle in response to one or more angles between two or more of the axle components, and
adjust operation of a system of the vehicle in response to the estimated axle load of the vehicle.

14. The system of claim 13 , wherein the axle components form a trapezoid-shape structure, wherein the axle components include an axle, a first knuckle, a second knuckle, a first kingpin, a second kingpin, and a tie rod, and wherein the angle sensor is coupled to a mounting portion of a knuckle cap assembly.

15. The system of claim 13 , wherein two or more of the axle components include a knuckle and a kingpin.

16. The system of claim 13 , wherein the axle load of the vehicle is estimated without use of a strain gauge.

Assignees

• Dana Heavy Vehicle Sys Group

Inventors

• Davis Mark A
• Passero Anthony N
• Stoychev Stoyan I

Classifications

• G01G19/18

  having electrical weight-sensitive devices · CPC title

• G01G19/028

  combined with shock-absorbing devices (shock-absorbing arrangements for bearings G01G21/02; means for damping oscillations G01G23/06; shock-absorbers per se F16F) · CPC title

• G01G19/40

  with provisions for indicating, recording, or computing price or other quantities dependent on the weight (indicating means for weighing apparatus G01G23/18; recording means for weighing apparatus G01G23/18; computers in general G06) · CPC title

• B62D7/18

  Steering knuckles; King pins · CPC title

• B60W2556/50

  of positioning data, e.g. GPS [Global Positioning System] data · CPC title