System for Indirectly Monitoring the Inflation Pressure of Pneumatic-Tyred Vehicle Wheels and Vehicle Wheel Therefore

• US 20160250903A1
• Filed: 10/02/2014
• Published: 09/01/2016
• Est. Priority Date: 10/07/2013
• Status: Active Grant

• Current Assignee: Hayes Lemmerz Holding GmbH (Iochpe-Maxion SA)
• Original Assignee: Hayes Lemmerz Holding GmbH (Iochpe-Maxion SA)
• Inventors: Weber, Volker, Rode, Karl, Gohrbandt, Uwe
• Granted Patent: US 10,752,062 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: B60C 23/004 the control being done on the wheel, e.g. using a wheel-mounted reservoir
• CPC Class Codes: B60C 23/06 Signalling devices actuated by deformation of the tyre , e.g. tyre mounted deformation sensors or indirect determination of tyre deformation based on wheel speed, wheel-centre to ground distance or inclination of wheel axle
• CPC Class Codes: B60C 23/064 comprising tyre mounted deformation sensors, e.g. to determine road contact area

Abstract

A system for indirectly monitoring the inflation pressure of pneumatic-tyred vehicle wheels, and also to a wheel. The wheel is having a wheel body with a rim part and a disc part, and a tyre detachably fitted on the rim part of the wheel body. The wheel comprises at least one deformation sensor for sensing the tyre inflation pressure at the time, and the system comprises a data transmission device for transmitting sensor signals of the at least one sensor to an evaluation device, and an evaluation device for evaluating the sensor signals. In order to provide a system and vehicle wheels that are simplified in comparison with the tyre pressure monitoring system previously used, the deformation sensor is fitted on the wheel body and is usable or used for sensing inflation-pressure-dependent deformations of the wheel body.

Claims

1. A system for indirectly monitoring the inflation pressure of pneumatic-tyred vehicle wheels on vehicles, comprising at least one wheel body with a rim part and a disc part comprising a tyre detachably fitted on the rim part of the wheel body, comprising a valve fitted in the wheel body and configured for changing the inflation pressure in the tyre, comprising at least one sensor for sensing the tyre inflation pressure at the time, comprising a data transmission device for transmitting sensor signals of the at least one sensor to an evaluation device for evaluating the sensor signals, the at least one sensor being a deformation sensor, wherein the deformation sensor is fitted on the wheel body and is configured for sensing inflation-pressure-dependent deformations of the wheel body.

2. The system according to claim 1, wherein the evaluation device is a component part of an electronic system of the vehicle.

3. The system according to claim 1, wherein the system uses an inductive energy supply of the deformation sensor and/or of a transmission device.

5. The system according to claim 1, wherein the deformation sensor is fitted on the rim part of the wheel body.

6. The system according to claim 1, wherein the deformation sensor is attached to an radial outer side of the rim part.

7. The system according to claim 1, wherein the deformation sensor is attached to the wheel body while aligned parallel to a wheel axis or obliquely to the wheel axis at an angle of approximately 45°

.

8. The system according to claim 1, wherein the deformation sensor is fixedly attached to the wheel body on or at a surface of a rim of the rim part.

9. The system according to claim 1, wherein the rim part of the wheel body is provided with a well and the deformation sensor is fitted on the rim part in the region of the well in a transition radius between a well base and a well flank.

10. The system according to claim 1, wherein the output signals of a single deformation sensor are used for measuring the inflation pressure.

11. The system according to claim 1, wherein the deformation sensor comprises multiple sensor cells, which are attached to the wheel body at a distance from one another.

12. The system according to claim 1, wherein the deformation sensor or the sensor cells consist(s) of strain gauges or comprise(s) strain gauges.

13. The system according to claim 1, wherein the deformation sensor is a component part of a passive RFID transponder.

14. The system according to claim 1, wherein a loading state of the vehicle is determinable or is determined from the sensor signals of at least one deformation sensor.

4. (canceled)

15. A vehicle wheel configured for use with a system for indirectly monitoring the inflation pressure of a pneumatic tyred vehicle wheel comprising at least one wheel body with a rim part and a disc part, a tyre detachably fitted on the rim part of the wheel body, a valve fitted in the wheel body and configured for changing the inflation pressure in the tyre, at least one sensor for sensing the tyre inflation pressure at a time, a data transmission device for transmitting sensor signals of the at least one sensor to an evaluation device for evaluating the sensor signals, the at least one sensor being a deformation sensor, wherein a deformation sensor configured for sensing inflation-pressure-dependent deformations of the wheel body is fitted on the wheel body.

16. The vehicle wheel according to claim 15, wherein the evaluation device is a component part of an electronic system of the vehicle.

17. The vehicle wheel according to claim 15, wherein the system uses an inductive energy supply of the deformation sensor and/or of a transmission device.

18. The vehicle wheel according to claim 15, wherein the deformation sensor is fitted on the rim part of the wheel body.

19. The vehicle wheel according to claim 15, wherein the deformation sensor is attached to an radial outer side of the rim part.

20. The vehicle wheel according to claim 15, wherein the deformation sensor s attached to the wheel body while aligned parallel to a wheel axis or obliquely to the wheel axis at an angle of approximately 45°

.

21. The vehicle wheel according to claim 15, wherein the deformation sensor is fixedly attached to the wheel body on or at a surface of a rim of the rim part.