Patent · US Active

Powershift transmission in a motor vehicle

US9068637B2 · kind B2 · utility

2Cited by

2References

7Claims

0Family size

Assignee

VOLVO LASTVAGNAR AB · SE

Inventors

Anders Hedman · Marstrand, SE
Daniel Stålberg · Eskilstuna, SE

Key dates

Filing date	Dec 9, 2009
Grant date	Jun 30, 2015
Priority date	—
Expiry date	Jan 19, 2031

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T74/19051
WIPO fieldMechanical elements
WIPO sectorMechanical engineering

Abstract

A powershift transmission in a motor vehicle is arranged between a prime mover and driven wheels of the motor vehicle for transmission of propulsive power and selection of different gear speed ratios. The powershift transmission includes at least two factional clutches for alternatively engaging at least two input shafts, a main transmission, a range section and an output shaft. A countershaft in the powershift transmission is rotationally connectable to the output shaft in order to establish a by-pass torque path, passing by the range section, and in which propulsive power can be transferred when the range section is gear shifted between different range speed ratios.

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