Method and device for adjusting the braking and/or driving effect on the wheels of a motor vehicle
AssigneeRobert Bosch GmbH
InventorsJohannes Schmitt, Klaus-Peter Mattern
Life of this patent
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Abstract
By allowing for the possibility that light-weight spare wheels or spare wheels are mounted, the invention demonstrates possible ways for replacing the output signals of one or more defective wheel speed sensors.
Claims12
A method for adjusting the braking and/or driving effect at the wheels (101ij) of a motor vehicle having at least four wheels mounted on at least two axles and having sensors (105ij) assigned to the wheels which detect the rotational movements of the wheels, the adjustment of the braking and/or driving effect being activated at least as a function of the output signals (Nij) of the sensors, where
- it is determined whether a spare wheel is mounted which has a smaller diameter than the other wheels,
- defects in the sensors (105ij) are determined,
- in response to the determination of a defect in one sensor, the adjustment of the braking and/or driving effect at the wheel of an axle assigned to this sensor is only activated as a substitute as a function of the detected rotational movement at the wheel of another axle on the same side if it is determined that this wheel on the same side is not a spare wheel.
A method for adjusting the braking and/or driving effect at the wheels (101ij) of a motor vehicle having at least four wheels mounted on at least two axles and having sensors (105ij) assigned to the wheels which detect the rotational movements of the wheels, the adjustment of the braking and/or driving effect being activated at least as a function of the output signals of the sensors, where
- an acceleration quantity (al) representing the vehicle's longitudinal acceleration is detected,
- defects in the sensors are determined,
- in response to the determination of a defect in one sensor, the adjustment of the braking and/or driving effect at the wheel of an axle assigned to this sensor is activated as a substitute as a function of the detected acceleration quantity (al), it being provided in particular that the acceleration quantity is integrated and the integrated acceleration quantity is used as a substitute;
- it being provided in particular that the acceleration quantity and/or the integrated acceleration quantity is corrected as a function of the angle of inclination of the vehicle.
A method for adjusting the braking and/or driving effect at the wheels (101ij) of a motor vehicle having at least four wheels mounted on at least two axles and having sensors (105ij) assigned to the wheels which detect the rotational movements of the wheels, the adjustment of the braking and/or driving effect being activated at least as a function of the output signals of the sensors and at least one wheel being driven by a drive unit (103) via the drive train of the motor vehicle, where
- a rotational quantity (Nmot) is detected which represents a rotational movement in the drive train and
- defects in the sensors (105ij) are determined,
- in response to the determination of a defect in one sensor, the adjustment of the braking and/or driving effect at the wheels assigned to these sensors is activated as a substitute as a function of the detected rotational quantity (Nmot).
A device for adjusting the braking and/or driving effect at the wheels (101ij) of a motor vehicle having at least four wheels mounted on at least two axles and having sensors (105ij) assigned to the wheels which detect the rotational movements of the wheels, the adjustment of the braking and/or driving effect being activated at least as a function of the output signals (Nij) of the sensors, where means (104) are provided via which
- it is determined whether a spare wheel is mounted which has a smaller diameter than the other wheels,
- defects in the sensors (105ij) are determined,
- in response to the determination of a defect in one sensor, the adjustment of the braking and/or driving effect at the wheel of an axle assigned to this sensor is only activated as a substitute as a function of the detected rotational movement at the wheel of another axle on the same side, if it is determined that this wheel on the same side is not a spare wheel.
A device for adjusting the braking and/or driving effect at the wheels (101ij) of a motor vehicle having at least four wheels mounted on at least two axles and having sensors (105ij) assigned to the wheels which detect the rotational movements of the wheels, the adjustment of the braking and/or driving effect being activated at least as a function of the output signals of the sensors, where means (104) are provided via which
- an acceleration quantity (al) representing the vehicle's longitudinal acceleration is detected,
- defects in the sensors are determined,
- in response to the determination of a defect in one sensor, the adjustment of the braking and/or driving effect at the wheel of an axle assigned to this sensor is activated as a substitute as a function of the detected acceleration quantity (al), it being provided in particular that the acceleration quantity is integrated and the integrated acceleration quantity is used as a substitute, it being provided in particular that the acceleration quantity and/or the integrated acceleration quantity is corrected as a function of the angle of inclination of the vehicle.
A device for adjusting the braking and/or driving effect at the wheels (101ij) of a motor vehicle having at least four wheels mounted on at least two axles and having sensors (105ij) assigned to the wheels which detect the rotational movements of the wheels, the adjustment of the braking and/or driving effect being activated at least as a function of the output signals of the sensors and at least one wheel being driven by a drive unit (103) via the drive train of the motor vehicle, where means (104) are provided via which
- a rotational quantity (Nmot) is detected which represents a rotational movement in the drive train;
- and
- defects in the sensors (105ij) are determined,
- in response to the determination of a defect in one sensor, the adjustment of the braking and/or driving effect at the wheels assigned to these sensors is activated as a substitute as a function of the detected rotational quantity (Nmot).
Dependencies are inferred from the claim text.