Method for operating a drive train of a motor vehicle
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United States of America Patent
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-
N/A
Issued Date -
Mar 22, 2007
app pub date -
Mar 9, 2004
filing date -
Apr 19, 2003
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
In a method for operating a motor vehicle drive train during a shifting operation of a gearwheel change gearbox, the clutch is triggered for closing before the target gear is fully engaged. A control device determines a triggering moment for the clutch as a function of operational parameters and/or state variables of the drive train. The control device calculates a required interval which is necessary until complete engagement of the target gear and an interval which is necessary until a gripping point of the clutch is reached. An optimum triggering moment is determined from these intervals. The tractive force interruption during a shifting operation is thus very short. At the same time, the completion of the shifting operation is ensured.
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