Method and device for detecting motor vehicle tilt

A device for detecting a tendency of a vehicle to roll over about a vehicle axis, the vehicle axis being oriented in a longitudinal direction of the vehicle, comprising:

• first means for determining a variable describing a wheel rpm for at least one wheel;
• second means for determining at least one variable representing transverse dynamics of the vehicle;
• third means for determining, for the at least one wheel, a variable describing quantitatively a wheel behavior, the variable describing quantitatively the wheel behavior being a function of the variable determined by the first means for a corresponding wheel and the at least one variable determined by the second means;
• and
• fourth means for determining whether the vehicle has the tendency to roll over about the vehicle axis as a function of at least the variable determined by the third means for the at least one wheel.

A method for detecting a tendency of a vehicle to roll over about a vehicle axis, the vehicle axis being oriented in a longitudinal direction of the vehicle, the method comprising the steps of:

• (a) determining, for at least one wheel, a variable describing a wheel rpm;
• (b) determining at least one variable representing transverse dynamics of the vehicle;
• (c) determining, for the at least one wheel, a variable describing quantitatively a wheel behavior, the variable describing quantitatively the wheel behavior being a function of (1) the variable describing the wheel rpm for a corresponding wheel of the at least one wheel and (2) the at least one variable representing the transverse dynamics of the vehicle;
• and
• (d) determining whether the vehicle has the tendency to roll over about the vehicle axis as a function of at least the variable describing quantitatively the wheel behavior of at least one of the at least one wheel, wherein the step of determining whether the vehicle has the tendency to roll over includes the steps of:
• comparing an absolute value of one of the at least one variable representing the transverse dynamics of the vehicle to a threshold value;
• and
• performing the determination of whether the vehicle has the tendency to roll over when the absolute value is greater than the threshold value.

A method for detecting a tendency of a vehicle to roll over about a vehicle axis, the vehicle axis being oriented in a longitudinal direction of the vehicle, the method comprising the steps of:

• (a) determining, for at least one wheel, a variable describing a wheel rpm;
• (b) determining at least one variable representing transverse dynamics of the vehicle;
• (c) determining, for the at least one wheel, a variable describing quantitatively a wheel behavior, the variable describing quantitatively the wheel behavior being a function of (1) the variable describing the wheel rpm for a corresponding wheel of the at least one wheel and (2) the at least one variable representing the transverse dynamics of the vehicle;
• and
• (d) determining whether the vehicle has the tendency to roll over about the vehicle axis as a function of at least the variable describing quantitatively the wheel behavior of at least one of the at least one wheel, wherein the step of determining whether the vehicle has the tendency to roll over includes the steps of:
• determining a variable describing at least one of a drive slip and a wheel slip prevailing at a particular wheel of the at least one wheel;
• comparing an absolute value of the variable describing at least one of the drive slip and the wheel slip to a corresponding threshold value;
• and
• performing the determination of whether the vehicle has the tendency to roll over as a function of the comparing.

A method for detecting a tendency of a vehicle to roll over about a vehicle axis, the vehicle axis being oriented in a longitudinal direction of the vehicle, the method comprising the steps of:

• (a) determining, for at least one wheel, a variable describing a wheel rpm;
• (b) determining at least one variable representing transverse dynamics of the vehicle;
• (c) determining, for the at least one wheel, a variable describing quantitatively a wheel behavior, the variable describing quantitatively the wheel behavior being a function of (1) the variable describing the wheel rpm for a corresponding wheel of the at least one wheel and (2) the at least one variable representing the transverse dynamics of the vehicle, wherein the step of determining for a respective wheel of the at least one wheel, the variable describing quantitatively the wheel behavior includes a step of determining a variable describing a wheel load acting on the respective wheel and a step of determining a variable describing at least one of a diameter and a radius of the respective wheel;
• and
• (d) determining whether the vehicle has the tendency to roll over about the vehicle axis as a function of at least the variable describing quantitatively the wheel behavior of at least one of the at least one wheel.

A method for detecting a tendency of a vehicle to roll over about a vehicle axis, the vehicle axis being oriented in a longitudinal direction of the vehicle, the method comprising the steps of:

• (a) determining, for at least one wheel, a variable describing a wheel rpm;
• (b) determining at least one variable representing transverse dynamics of the vehicle;
• (c) determining, for the at least one wheel, a variable describing quantitatively a wheel behavior, the variable describing quantitatively the wheel behavior being a function of (1) the variable describing the wheel rpm for a corresponding wheel of the at least one wheel and (2) the at least one variable representing the transverse dynamics of the vehicle;
• and
• (d) determining whether the vehicle has the tendency to roll over about the vehicle axis as a function of at least the variable describing quantitatively the wheel behavior of at least one of the at least one wheel, wherein the vehicle has the tendency to roll over when an absolute value of a difference between a variable describing a vehicle speed and a speed limit value is smaller than a corresponding threshold value.