Patent · US Active

Transmission control method

US10876625B2 · kind B2 · utility

0Cited by

6References

13Claims

0Family size

Assignee

ZF FRIEDRICHSHAFEN AG · DE

Inventors

Andreas Wendzel · Grünkraut, DE
Matthias Reisch · Ravensburg, DE
Gregor Stoelcker · Berlin, DE

Key dates

Filing date	Jun 4, 2019
Grant date	Dec 29, 2020
Priority date	—
Expiry date	Jun 4, 2039

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF16H2306/48
WIPO fieldMechanical elements
WIPO sectorMechanical engineering

Abstract

A method for operating a transmission for a motor vehicle having an input shaft, a first shaft connectable to the input shaft via a first input clutch and a second shaft connectable to the input shaft via a second input clutch, a plurality of gearshift clutches, and an output shaft. Different gear ratios between the input and output shafts are implementable by selective engagement of the plurality of clutches. A first torque transmission path between the first and second shafts is engageable with a first friction-locking clutch and a second torque transmission path between the first and second shafts is engageable with a second friction-locking clutch. The method includes actuating, at least intermittently during a synchronization phase in an upshift process of the transmission, the first friction-locking clutch to transmit a first torque and the second friction-locking clutch to transmit a second torque.

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