Interrelated power delivery controls – including engine control – Transmission control – With clutch control
Reexamination Certificate
2005-11-29
2005-11-29
Ho, Ha (Department: 3681)
Interrelated power delivery controls, including engine control
Transmission control
With clutch control
C477S078000, C074S336001
Reexamination Certificate
active
06969338
ABSTRACT:
Described is a method for controlling and regulating a drive train of a vehicle comprising one drive unit, one transmission and one output unit. The transmission has controllable free-wheel device corresponding with toothed wheel pairs for disconnecting or connecting an old or a new gear and located on the input side one clutch. In the presence of a shifting signal for carrying out a higher traction shift, an input torque of the drive unit is quickly reduced so that a first vibration is induced in the drive unit. During a subsequent shifting, an operative connection is abruptly created between a free-wheel device and a toothed wheel pair corresponding therewith in a manner such that a second vibration counteracting the first vibration is produced in the drive train. With the engagement of the new gear the operative connection of the old gear is canceled as a result of a torque reversal from a pull torque to a push torque.
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Baasch Detlef
Dreibholz Ralf
Gumpoltsberger Gerhard
Davis & Bujold P.L.L.C.
Ho Ha
ZF Friedrichshafen AG
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