Method for calibrating an actuator of an all-wheel drive clutch
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United States of America Patent
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Jul 2, 2013
Grant Date -
Feb 19, 2009
app pub date -
Aug 13, 2008
filing date -
Aug 13, 2007
priority date (Note) -
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Abstract
A method for the readjustment of an actuator of an all-wheel drive clutch of a motor vehicle that includes determining a clutch slip value corresponding to a difference between the speed of a primary axle and the speed of a secondary axle; determining a reference secondary axle torque corresponding to the proportion of a driving torque which is transmitted to the secondary axle and for which a clutch slip value of substantially zero is expected; and comparing the clutch slip value with a threshold value and comparing a desired clutch torque with the reference secondary axle torque. A desired clutch torque/control signal relationship for the clutch actuator is changed in dependence on the result of these comparisons.
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