System and method for monitoring the traction of a motor vehicle

The system as recited in one of the preceding claims,

• wherein the sensor (10) is a wheel contact-force sensor (20, 22, 24, 26, 28, 30) that detects the wheel contact force.

The system as recited in one of the preceding claims,

• wherein the sensor (10) is a lateral wheel force sensor (20, 22, 24, 26, 28, 30) that detects the lateral wheel force.

The system as recited in one of the preceding claims, wherein

• it has a memory device (15) for storing a preceding sensor signal;
• and
• the evaluation device (14) also determines a change over time of the detected wheel-force component by processing the preceding sensor signal and an active sensor signal, comparing the determined change to a predetermined change threshold, and then evaluating when at least one wheel is lifting off according to the comparative results.

The system as recited in one of the preceding claims, wherein

• the evaluation device (14) emits an actuating signal according to the result of the evaluation;
• and
• the system also includes an actuating device (16) that influences an operating state of the motor vehicle in accordance with the actuating signal.

The system as recited in one of the preceding claims,

• wherein the actuating device (16) changes the engine output and/or the wheel braking pressure of at least one wheel (12) in accordance with the actuating signal of the evaluation device (14).

The system as recited in one of the preceding claims,

• wherein the actuating device (16) increases the wheel braking pressure of at least one wheel on the outside of a curve.

The system as recited in one of the preceding claims,

• wherein the sensor (10) is a tire sensor (20, 22, 24, 26, 28, 30).

The system as recited in one of the preceding claims,

• wherein the sensor (10) is a wheel-bearing sensor.

The system as recited in one of the preceding claims,

• wherein the actuating device (16), and possibly the evaluation device (14), is (are) assigned to a device for controlling and/or regulating the handling of a motor vehicle such as an ABS and/or TCS system.

A system for controlling and/or regulating the handling of a motor vehicle having at least one tire (32) and/or one wheel (12), a force sensor (20, 22) located in the tire (32) and/or on the wheel (12), especially on the wheel bearing, and a wheel variable that represents the tendency of the wheel (12) to lift off from the roadway and that is determined in dependence upon of the output signals of the force sensor, and this wheel variable is used for the control and/or regulation of the handling.