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AssigneeVolvo Truck Corporation
InventorsAnders FLOGÅRD, Mat FAGERGREN, Lena LARSSON, Jan ÖBERG
Estimating the term…
A wheel suspension system and a method for controlling the system. The wheel suspension system includes a first axle provided with wheels and a second axle provided with wheels. The first axle is connected to a first driveshaft portion via a first differential 6a and the second axle is connected to a second driveshaft portion via a second differential 6b. The system further includes angular speed sensors designed to detect the rotational speed of the axles, and/or the rotational speed of the respective wheels. The angular speed sensors are connected to an electronic control unit (ECU) which is designed to calculate a difference between the angular speed of the first and second axles, and/or a difference between the angular speed of the respective wheels by the use of input data from the angular speed sensors. The speed difference can be used as an indication of different wheel radius of the wheels. The system includes a coupling, e.g. a dog clutch arrangement, arranged in the driveshaft and positioned between the first and second drive shaft portions for changing the first and second drive shaft portions between being drivingly connected and disconnected.
A control method for a wheel system including a multi-drive axle for a vehicle, the wheel system comprises at least two driven axles whereof each axle is provided with a pair of wheels and connected to a driveshaft via differentials, the driveshaft comprising a coupling positioned between each differential so as to divide the driveshaft into different driveshaft portions which can change between being drivingly connected and disconnected to the driveshaft, the wheel system further comprising angular speed sensors designed to detect the angular speed of the wheels connected thereto, the control method comprising the steps of:
A control method according to claim 1, wherein it is used for a wheel system comprising a lifting mechanism acting on a driven rear axle for being able to shift the position of the wheels on that axle between being in a working position in contact with the ground surface and being lifted up to be in a resting position above a ground contact level, the method comprising the following steps which may precede the steps of claim 6:
11-15. (canceled)
Dependencies are inferred from the claim text.