Patent · US Active

Method for operating a vehicle with a vehicle powertrain and a vehicle brake

US10919529B2 · kind B2 · utility

0Cited by

1References

13Claims

0Family size

Assignee

ZF FRIEDRICHSHAFEN AG · DE

Inventors

Philipp Fehr · Gettorf, DE
Johannes Brockmann · Gettorf, DE
Peter Schiele · Kreßbronn, DE

Key dates

Filing date	Nov 22, 2016
Grant date	Feb 16, 2021
Priority date	—
Expiry date	Aug 23, 2037

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02T10/72
WIPO fieldTransport
WIPO sectorMechanical engineering

Abstract

A method for operating a vehicle having a vehicle drive train (1) and a vehicle brake (7) downshifting an automatic transmission (3) in a coasting condition, during which at least one friction-locking shift element is to be disengaged and one form-fit shift element is to be engaged. An output torque present at a driven end (4) is at least partially supported at a drive motor (2) at the point in time of a demand for the coasting downshift. The drive motor (2) is actuated before the implementation of the coasting downshift in order to reduce the portion of the output torque which is supportable at the drive motor (2), and a portion of the output torque is supported in the area of the vehicle brake (7) by an appropriate actuation of the vehicle brake (7).

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.