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:
Jul. 21, 2020
Filed:
Aug. 29, 2018
Zf Friedrichshafen Ag, Friedrichshafen, DE;
Felix Bühle, Eriskirch, DE;
Thomas Lemp, Langenargen, DE;
ZF FRIEDRICHSHAFEN AG, Friedrichshafen, DE;
Abstract
A method for operating a drive train of a motor vehicle includes selecting between first and second operating strategies for controlling a starting component (A,B) during a stopping process of the motor vehicle, and carrying out a downshift of the transmission (G) during the stopping process after implementing the first operating strategy or the second operating strategy. In the first operating strategy, the starting component (A,B) is engaged or locked up and/or remains engaged or locked up at least until the motor vehicle comes to a standstill. In the second operating strategy, the starting component (A,B) is disengaged or the lock-up of the starting component (A,) is released before the motor vehicle come to the standstill. The downshift of the transmission (G) is triggered at a different rotational speed limit value upon implementation of the first operating strategy than upon implementation of the second operating strategy.