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1. (WO2010121861) METHOD FOR OPERATING A VEHICLE HAVING A FREEWHEEL MODE OR A ROLLING MODE

Pub. No.:    WO/2010/121861    International Application No.:    PCT/EP2010/052811
Publication Date: Fri Oct 29 01:59:59 CEST 2010 International Filing Date: Sat Mar 06 00:59:59 CET 2010
IPC: B60W 30/14
B60W 10/10
B60W 30/18
Applicants: ZF FRIEDRICHSHAFEN AG
STAUDINGER, Joachim
WÜRTHNER, Maik
SAUTER, Ingo
KEMLER, Johannes
Inventors: STAUDINGER, Joachim
WÜRTHNER, Maik
SAUTER, Ingo
KEMLER, Johannes
Title: METHOD FOR OPERATING A VEHICLE HAVING A FREEWHEEL MODE OR A ROLLING MODE
Abstract:
The invention relates to a method for operating a vehicle in a freewheel or a rolling mode, wherein the vehicle has a drivetrain comprising a controllable drive engine, an automatic or automated transmission and controllable switching means for interrupting a frictional connection in the drivetrain. In order to enable fuel efficient and low emission, as well as safe and convenient driving, it is intended that the freewheel or rolling mode is prognostically activated, deactivated or maintained by means of a plausibility check of a currently active automatic driving speed control function or driving speed and distance control function and/or other current driving operation or driving condition data or values derived therefrom, that temporarily relevant marginal conditions of the active driving speed control function or driving speed and distance control function and of the freewheel and rolling mode are coordinated and adapted due to driving situation, and that necessary control measures are taken via a transmission control.