Tire pressure measure on a vehicle

Patent metadata

Field	Value
Publication number	US-9731563-B2
Application number	US-201414472742-A
Country	US
Kind code	B2
Filing date	Aug 29, 2014
Priority date	Aug 29, 2013
Publication date	Aug 15, 2017
Grant date	Aug 15, 2017

Abstract

A tire pressure control arrangement for a vehicle having at least two tires connected to an air supply. Each tire is connected to the air supply via a supply line having a first valve connected to a second valve. The arrangement further includes a pressure sensor between the two valves. The first valve is closed while the supply line is connected to a pressure supply and the pressure in the supply line is monitored for a pre-determined period of time by a control system on the vehicle to detect whether there are any leaks in the arrangement.

First claim

The invention claimed is:

1. A tire pressure control arrangement for a vehicle having at least two tires connected to an air supply, each tire connected to an air supply via a respective supply line having a respective valve, said respective valve connected to a second valve, said arrangement further comprising a pressures sensor between said respective valve and the second valve, characterized in that the respective valve is closed while the supply line is connected to a reference pressure supply and said reference pressure in the supply line is monitored for a pre-determined period of time by a control system on the vehicle to detect whether there are any leaks in the arrangement.

2. The tire pressure control arrangement as claimed in claim 1 wherein the supply line is connected to the reference pressure supply by connecting the second valve to a vehicle air supply, or to the atmosphere.

3. The tire pressure control arrangement as claimed in claim 1 wherein the supply line is connected to the reference pressure supply by connecting a main control valve to a vehicle air supply or to the atmosphere, said main control valve being connected to the second valve.

4. The tire pressure control arrangement as claimed in claim 1 wherein the second valve is closed after connection to the reference pressure supply.

5. The tire pressure control arrangement as claimed in claim 1 wherein when the respective valve and the second valve are closed, the reference pressure between the respective valve and the second valve is measured and if a decrease or increase in pressure is detected, a warning signal is generated.

6. The tire pressure control arrangement as claimed in claim 1 in which the vehicle comprises four tires, each having a respective supply line with respective valve connectable to the pressure sensor.

7. The tire pressure control arrangement as claimed in claim 1 in which two tires or one axle are connected to a first main control valve and a further two tires, or a second axle are connected to a second main control valve.

8. A method of using the tire pressure control arrangement as claimed in claim 1 wherein the second valve is opened while the respective valve is closed to provide the reference pressure in the supply line and said reference pressure is monitored for a pre-determined period of time by the control system on the vehicle.

9. The method of using the tire pressure control arrangement as claimed in claim 8 wherein a warning signal is generated if the reference pressure in the supply line changes within said pre-determined period of time indicating a leak in the supply line, or the respective valve, or the second valve.

10. The method of using the tire pressure control arrangement as claimed in claim 8 wherein the supply line is connected to the reference pressure supply by connecting the second valve to the supply line or to atmospheric pressure.

11. The method of using the tire pressure control arrangement as claimed in claim 8 wherein the supply line is connected to the reference pressure supply by connecting a main control valve to the supply line, or to atmospheric pressure.

12. The method of using the tire pressure control arrangement as claimed in claim 8 wherein the second valve is closed after the supply line has been connected to the reference pressure supply.

Assignees

• Agco Int Gmbh
• Agco Int

Inventors

• Städele Alexander
• Pischulti Christian
• Schmölz Benjamin

Classifications

• B60C23/003 Primary

  comprising rotational joints between vehicle-mounted pressure sources and the tyres · CPC title

• B60C23/02

  Signalling devices actuated by tyre pressure {(hand-held tyre pressure gauges G01L17/00)} · CPC title

• B60C23/00347

  comprising two or more feedthrough · CPC title

• B60C23/00363 Primary

  Details of sealings · CPC title

• B60C23/00354 Primary

  Details of valves · CPC title