Method for determining a limit speed for driving
First Claim
1. A method for determining a limit speed for driving, for a driver at a steering wheel of a vehicle, the method comprising steps of:
- determining at least one parameter that influences grip potential, the at least one parameter being selected from the group consisting of (a) pressure of a tire, (b) depth of a tread pattern of the tire, (c) water depth on a roadway, and (d) sand depth on the roadway;
estimating, in accordance with the at least one parameter determined in the determining, a grip potential available at a given instant between a tire of the vehicle and a roadway on which the tire is running;
determining a need for grip on an forthcoming route event as a function of a driving situation of the vehicle; and
based on a function of the need for grip and the estimated grip potential, determining a limit speed for driving on the forthcoming route event.
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Accused Products
Abstract
A method for determining a limit speed for driving, for a driver at a vehicle'"'"'s steering wheel, includes a step of estimating a grip potential available at a given instant between a tire of the vehicle and a roadway on which a tire of the vehicle is running. The grip potential is estimated as a function of at least one of: a known influencing parameter, and a measured influencing parameter. The method also includes a step of determining a need for grip as a function of a driving situation of the vehicle and driving characteristics of the driver. The method further includes a step of determining a limit speed for driving as a function of the need for grip and the estimated grip potential. By virtue of the limit speed for driving, it is possible to prevent exceeding an estimate grip potential available.
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Citations
16 Claims
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1. A method for determining a limit speed for driving, for a driver at a steering wheel of a vehicle, the method comprising steps of:
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determining at least one parameter that influences grip potential, the at least one parameter being selected from the group consisting of (a) pressure of a tire, (b) depth of a tread pattern of the tire, (c) water depth on a roadway, and (d) sand depth on the roadway; estimating, in accordance with the at least one parameter determined in the determining, a grip potential available at a given instant between a tire of the vehicle and a roadway on which the tire is running; determining a need for grip on an forthcoming route event as a function of a driving situation of the vehicle; and based on a function of the need for grip and the estimated grip potential, determining a limit speed for driving on the forthcoming route event. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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Specification