Method for operating the drive train of a motor vehicle

Details Method for operating the drive train of a motor vehicle Method for operating the drive train of a motor vehicle

2004-05-05

2008-10-28

Pang, Roger (Department: 3681)

Interrelated power delivery controls, including engine control

Transmission control

Transmission controlled by engine

C477S125000, C477S092000

Reexamination Certificate

active

07442148

ABSTRACT:
In a method for operating a motor vehicle in the event of a shift of a power divider actuated by external force, before the commencement of the shift of the power divider, a control device reduces the torque at the shifting members involved in the shift. The vehicle transmission is an automatic transmission, and the reduction is achieved a clutch in the automatic transmission is opened. After the conclusion of the shift, a torque is permitted again at said shifting members, and the clutch is closed again. The vehicle driver can consequently execute a shift in the power divider merely by triggering a shift requirement.

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International Search Report Dated Sep. 2, 2004 (nine (9) pages).
European Office Action Dated Jan. 20, 2004 (three (3) pages).

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