TIRE PRESSURE MEASURE ON A VEHICLE

• US 20150059919A1
• Filed: 08/29/2014
• Published: 03/05/2015
• Est. Priority Date: 08/29/2013
• Status: Active Grant

• Current Assignee: AGCO International GmbH (AGCO International Holdings BV)
• Original Assignee: AGCO International GmbH (AGCO International Holdings BV)
• Inventors: Stdele, Alexander, Pischulti, Christian, Schmlz, Benjamin
• Granted Patent: US 9,731,563 B2
• Time in Patent Office: Days
• US Class Current: 141/4
• CPC Class Codes: B60C 23/00347 comprising two or more feedthrough
• CPC Class Codes: B60C 23/00354 Details of valves
• CPC Class Codes: B60C 23/00363 Details of sealings
• CPC Class Codes: B60C 23/02 Signalling devices actuated by tyre pressure hand-held tyre pressure gauges G01L17/00

Abstract

A tire pressure control arrangement for a vehicle having at least two tires connected to an air supply. Each tire is connected to an air supply via a respective supply line having a respective valve means (223) and the respective valve means is connected to a second valve means (222). The arrangement further comprises a pressures sensor (38) between the respective valve means (223) and the second valve means (222). The respective valve means (223) is closed while the supply line is connected to a reference pressure supply and the 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.

Claims

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 means (223), said respective valve means connected to a second valve means (222), said arrangement further comprising a pressures sensor (38) between said respective valve means (223) and the second valve means (222), characterised in that the respective valve means (223) 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 an leaks in the arrangement.

2. A tire pressure control arrangement as claimed in claim 1 wherein the supply line is connected to a reference pressure supply by connecting the second valve means (222) to a vehicle air supply, or to the atmosphere.

3. A tire pressure control arrangement as claimed in claim 1 wherein the supply line is connected to a reference pressure supply by connecting a main control valve (221) to a vehicle air supply or to the atmosphere, said main control valve being connected to the second valve means.

4. A tire pressure control arrangement as claimed in claim 1 wherein the second valve means (222) is closed after connection to the reference pressure supply.

5. A tire pressure control arrangement as claimed in claim 1 wherein when the respective valve means (223) and the second valve means (222) are closed, the reference pressure between the respective valve means (223) and the second valve means (222) is measured and if a decrease or increase in pressure is detected, a warning signal is generated.

6. A 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 means (223) connectable to the pressure sensor (38).

7. A tire pressure control arrangement as claimed in claim 1 in which two tires or one axle are connected to a first main control valve (221) and a further two tires, or a second axle are connected to a second main control valve (221).

8. A method of using the tire pressure control arrangement as claimed in claim 1 wherein a second valve means (222) is opened while a respective valve (223) is closed to provide a reference pressure in the supply line and said reference pressure is monitored for a pre-determined period of time by a control system on the vehicle.

9. A 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 means, or the second valve means.

10. A 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 means (222) to the vehicle air supply or to atmospheric pressure.

11. A 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 (221) to the vehicle air supply, or to atmospheric pressure.

12. A method of using the tire pressure control arrangement as claimed in claim 8 wherein the second valve means (222) is closed after the supply line has been connected to a reference pressure supply.