The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 15, 2019
Filed:
May. 18, 2017
Zf Friedrichshafen Ag, Friedrichshafen, DE;
Peter Schiele, Kressbronn, DE;
Magnus Stiefenhofer, Amtzell, DE;
ZF FRIEDRICHSHAFEN AG, Friedrichshafen, DE;
Abstract
A method for operating a vehicle drivetrain () includes decoupling, in the presence of a demand for realizing a sailing operating state of the vehicle drivetrain () during which a drive machine () is active and the power flow between the drive machine () and a drive output () is disconnected in a gearbox (), the active drive machine () from the drive output () by opening of one of a plurality of shift elements (A to F) that is held in a closed operating state in order to realize the operating state present before the demand for decoupling of the active drive machine (). The method also includes then actuating the plurality of shift elements (A to F) in a manner dependent on the present operating state profile of the vehicle drivetrain () and with the active drive machine () decoupled from the drive output ().