Operation of a multi-speed vehicle transmission
AssigneeZF Friedrichshafen AG
InventorsJürgen Blaser, Fabian Ley, Jens Winter
Life of this patent
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AssigneeZF Friedrichshafen AG
InventorsJürgen Blaser, Fabian Ley, Jens Winter
Estimating the term…
Disclosed is a method for operating a multi-gear vehicle transmission having a plurality of shifting elements (A, B, C, D, E) for engaging the gears of the vehicle transmission, where, in a neutral gear an input (AN) and an output (AB) of the vehicle transmission are decoupled from one another, and where, in a driving gear the input (AN) and the output (AB) of the vehicle transmission are coupled to one another in order to propel the vehicle, by closing at least one shifting element (B). When the neutral gear is engaged, at least an actuation condition of a vehicle brake (11) and a transmission condition with elevated drag losses are detected, where, when the neutral gear is engaged, the shifting element (B) for the driving gear is vented if it is recognized that the vehicle brake (11) has been released and the transmission condition with elevated drag losses pertains.
A method for operating a multi-gear vehicle transmission having an input, an output, and a plurality of shifting elements for engaging the gears of the vehicle transmission, the method comprising:
A multi-gear vehicle transmission comprising:
The multi-gear vehicle transmission of 11, wherein the control unit is configured to close at least three or exactly three shifting elements when placing the vehicle transmission in any of the driving gears.
Dependencies are inferred from the claim text.