Continental Automotive Gmbh

Continental Teves, Ag and Company Ohg

Continental Aktiengesellschaft

Lothar Keller

Dieter Dinkel

Norbert Ehmer

Andreas Köbe

Martin Griesser

Stefan Kammann

Peter Säger

Mirco Loos

Patrick Merzoug

Peter SÄGER

Hermann Esselbrügge

Karl Marschke

A method for determining a maximum coefficient of friction &#x3bc;between a tire and an underlying surface entails empirically determining a reference curve &#x3bc;(S) of a coefficient of friction &#x3bc;as a function of a slip S between the tire and an underlying reference surface, determining a first momentary slip Sfor the tire and a first momentary coefficient of friction &#x3bc;between the tire and the underlying surface at a first instant t, determining a second momentary slip Sfor the tire and a second momentary coefficient of friction &#x3bc;between the tire and the underlying surface at a second instant t, computing a slope of the curve &#x3bc;(S) of the coefficient of friction &#x3bc; as a function of slip S, and computing the maximum coefficient of friction &#x3bc;between the tire and the underlying surface by transforming the reference curve &#x3bc;(S) on the basis of the slope of the curve &#x3bc;(S).

Method and device for determining a maximum coefficient of friction between a tire and an underlying surface

A method for determining the load exerted on the tire of a motor vehicle or to monitor the tire pressure, wherein during operation of the vehicle the pressure in the individual wheels is detected and the rotational behavior of the individual wheels is monitored, and wherein load distribution characteristic quantities are determined by comparing the rotational behavior or changes in said rotational behavior of the individual wheels during given driving conditions taking onto account preset or learned variables. Ultimately, the load exerted on the tires or pressure loss is determined from the tire pressure and the load distribution characteristic quantities.

Method for determining the load exerted on a vehicle tire

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Friedrichsdorf, Germany

Lothar Keller