System and method for determining tire wear

US9921134B2 · kind B2 · utility

Assignees

• Dr. Ing. h.c. F. Porsche AG · DE
• NIRA Dynamics AB · SE

Inventors

• Michael Unterreiner · Stuttgart, DE
• Thomas Svantesson · Linköping, SE
• Anders Svensson · Växjö, SE
• Peter Lindskog · Stockholm, SE

Key dates

• Filing date: Aug 3, 2015
• Grant date: Mar 20, 2018
• Expiry date: Jun 10, 2036

Classification

• Technology area (CPC G): Physics
• CPC primary: G01L17/005
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

System for determining tire wear for tires of a wheeled motor vehicle including a direct tire pressure determination unit being configured to measure at least the tire pressure of the tires; an indirect tire pressure determination unit being configured to determine for at least some of the tires a roll radius factor corresponding to or depending from the roll radius of the respective tire; a tire force determination unit being configured to determine a vertical force factor corresponding to or depending from a vertical force applied to the tires; and a processing unit for determining the tire wear for such tires of the motor vehicle for which the indirect tire pressure determination unit provides the respective roll radius factor, namely by compensating the roll radius factor of the tires provided by the indirect tire pressure determination unit.