Method for monitoring tyre-pressure monitoring systems in a motor vehicle

• US 20060212256A1
• Filed: 07/29/2004
• Published: 09/21/2006
• Est. Priority Date: 08/14/2003
• Status: Active Grant

• Current Assignee: Continental Teves AG & Co. OHG (Continental AG)
• Original Assignee: Continental Teves AG & Co. OHG (Continental AG)
• Inventors: Köbe, Andreas, Koukes, Vladimir, Griesser, Martin, Stölzl, Stefan, Lauer, Peter
• Granted Patent: US 7,289,930 B2
• Time in Patent Office: Days
• US Class Current: 702/138
• CPC Class Codes: B60C 23/0408 transmitting the signals by non-mechanical means from the wheel or tyre to a vehicle body mounted receiver

Abstract

Disclosed is a method of monitoring tire pressure monitoring systems in a motor vehicle. The motor vehicle has a tire pressure monitoring system with indirect measurement which detects tire inflation pressure loss on the basis of wheel speed data, and a tire pressure monitoring system with direct measurement (TPMS) which detects tire inflation pressure loss from tire inflation pressure values measured directly by pressure modules on the vehicle tire. According to the method a warning relating to tire inflation pressure loss emitted by a pressure module of the tire pressure monitoring system with direct measurement (TPMS) is not transmitted to the driver until this tire inflation pressure loss is confirmed by the tire pressure monitoring system with indirect measurement or by all pressure modules that are still working in fail-free manner. Also disclosed is a computer program product.

Claims

1. Method of monitoring tire pressure monitoring systems in a motor vehicle, with the motor vehicle comprising a tire pressure monitoring system with indirect measurement which detects tire inflation pressure loss on the basis of wheel speed data, and a tire pressure monitoring system with direct measurement (TPMS) which detects tire inflation pressure loss from tire inflation pressure values measured directly, by means of pressure modules, on the vehicle tire,

characterized in that a warning relating to tire inflation pressure loss emitted by a pressure module of the tire pressure monitoring system with direct measurement (TPMS) is not transmitted to the driver until this tire inflation pressure loss is confirmed by the tire pressure monitoring system with indirect measurement or by all pressure modules that are still working in fail-free manner.

2. Method as claimed in claim 1,

characterized in that a pressure module which generated an unconfirmed warning relating to tire inflation pressure loss is considered as faulty, and the tire inflation pressure values supplied from this pressure module are not taken into account in the continued monitoring operation.

3. Method as claimed in claim 1 or 2,

characterized in that a warning is given to the driver upon failure of the tire pressure monitoring system with indirect measurement.

4. Method as claimed in claim 1 or 2,

characterized in that failure of one or more pressure modules is indicated to the driver.

5. Method as claimed in claim 1 or 2,

characterized in that failure of one or more pressure modules is indicated only during vehicle inspection.

6. Computer program product,

characterized in that said product defines an algorithm which comprises a method according to at least any one of claims 1 to 5.