Interrelated power delivery controls – including engine control – Transmission control – With clutch control
Reexamination Certificate
2005-04-19
2005-04-19
Wright, Dirk (Department: 3681)
Interrelated power delivery controls, including engine control
Transmission control
With clutch control
C074S331000
Reexamination Certificate
active
06881171
ABSTRACT:
In either a pull-mode operating state or a push-mode operating state, a clutch arrangement assigned to the first gearbox input shaft and a clutch arrangement assigned to the second gearbox input shaft are actuated in such a way and a torque-generating arrangement comprising a drive unit is controlled in such a way that, when a shift is to be made between a first gear assigned to a first gearbox input shaft and a second gear assigned to a second gearbox input shaft, at least one of the following criteria with respect to the shifting sequence comprising the shift in question is fulfilled:(1) during the shifting sequence, the torque present at the gearbox output shaft is at least approximately constant or changes monotonically;(2) during the shifting sequence, the vehicle accelerates in an essentially monotonically increasing or in an essentially monotonically decreasing manner.
REFERENCES:
patent: 5890392 (1999-04-01), Ludanek et al.
patent: 6679134 (2004-01-01), Shigyo
John Thomas
Kuhstrebe Jochen
Reuthal Rainer
Strasser Thomas
Cohen & Pontani, Lieberman & Pavane
Wright Dirk
ZF Sachs AG
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