Arrangement at a vehicle with a differential lock
OwnerThomas Ahlgreninventor
Life of this patent
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Abstract
On a shaft between two drove wheels (6, 7), a motor vehicle has a differential gear, which has a differential lock that can be used to lock the two drive wheels relative to each other. To reduce the stress that the differential lock can be subjected to, there is a device (10) that, when the differential lock is engaged, senses the relative angle of rotation between the drive wheels and when this reaches a predetermined marginal value, one of the wheels is braked with the help of a control unit (11) in order to limit the relative rotation between the wheels. The outer wheel is braked when moving in a curve.
Claims5
Device on a motor vehicle, where there is a differential gear (5) on a wheel axle (4) between driving wheels (6, 7) and a differential lock that can be engaged to lock the driving wheels relative to each other, and where there are sensors (12, 13) at the driving wheels that are connected to a control unit (11) that regulates the braking force to the wheels, characterised in that the control unit (11) is arranged to determine any relative rotation between the wheels (6, 7), when the differential lock is engaged, based on signals received from the sensors (12, 13), and when the relative rotation between the wheels (7, 8) reaches a predetermined marginal value, the control unit also causes one of the wheels to be braked with the object of limiting the relative rotation between the wheels.
Dependencies are inferred from the claim text.