Method for controlling a vehicle
First Claim
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1. A method for controlling a vehicle an all wheel drive system and having a traction-slip control system (TCS) monitoring the behavior of the vehicle wheels, comprising the steps of:
- detecting a diagonal axle twist condition in which two diagonally opposite wheels lose sufficient traction with the ground;
evaluating the diagonal axle twist as a regulating variable of the traction slip control system; and
providing torque to at least one vehicle wheel having sufficient traction with the ground that is not one of the two diagonally opposite wheels in the diagonal axis twist condition.
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Abstract
The invention relates to a method for controlling a motor vehicle, in particular a traction-slip control system (TCS), wherein a diagonal axle twist is detected and evaluated as a regulating variable.
28 Citations
24 Claims
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1. A method for controlling a vehicle an all wheel drive system and having a traction-slip control system (TCS) monitoring the behavior of the vehicle wheels, comprising the steps of:
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detecting a diagonal axle twist condition in which two diagonally opposite wheels lose sufficient traction with the ground;
evaluating the diagonal axle twist as a regulating variable of the traction slip control system; and
providing torque to at least one vehicle wheel having sufficient traction with the ground that is not one of the two diagonally opposite wheels in the diagonal axis twist condition. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method for detecting a diagonal axle twist of a motor vehicle, said motor vehicle having an all-wheel drive system, a vehicle control system and a traction control system, comprising the steps of:
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comparing a characteristic of each of the individual, driven wheels, to the other driven wheels, the characteristic being at least one of wheel slip, rotating behavior and changes in rotating behavior; and
identifying a diagonal axle twist condition in which two diagonally opposite wheels have lost sufficient traction with the ground based on the comparison of the characteristic. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 23, 24)
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21. A circuit arrangement for detecting a diagonal axle twist of a motor vehicle, said motor vehicle having an all-wheel drive system and a traction-slip control system, the arrangement comprising:
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a first detection circuit for detecting measured changes in the rotating behavior of a set of driven wheels, the flit detection circuit including a first evaluation circuit evaluating the slip of the wheels on a secondary axle;
a second and a third evaluation circuit evaluating the slip of two diagonally opposite wheels for detecting a diagonal axle twist on two diagonally opposite wheels;
a fourth evaluation circuit evaluating the slip of the wheels on a primary axle;
an integrator, and a signal generator. - View Dependent Claims (22)
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Specification