Multi-speed gearbox

Patent metadata

Field	Value
Publication number	US-9175751-B2
Application number	US-201314396087-A
Country	US
Kind code	B2
Filing date	Mar 13, 2013
Priority date	Apr 27, 2012
Publication date	Nov 3, 2015
Grant date	Nov 3, 2015

Abstract

A multi-stage transmission which has a sun gear of a fourth planetary gear set connected with the housing in a non-rotatable manner, a ring gear of a first planetary gear set is permanently connected with a ring gear of the fourth planetary gear set, a sun gear of the first planetary gear set can be coupled with the housing via a first brake, a carrier of the first planetary gear set can be coupled with the housing via a second brake, the input drive shaft can be coupled with sun gear of the first planetary gear set via a first clutch, and the drive shaft can be coupled with a carrier of the fourth planetary gear set via a second clutch. Variations of other couplings within the multi-stage transmission result in transmissions having similar properties.

First claim

The invention claimed is:

1. A multi-speed transmission comprising:
an input drive shaft ( 70 ),
an output drive shaft ( 71 );
a plurality of shift elements including, at least, a first brake ( 51 ), a second brake ( 52 ), a first clutch ( 61 ) and a second clutch ( 62 );
at least first, second, third and fourth planetary gear sets ( 1 , 2 , 3 , 4 ) arranged within a housing ( 72 ), and each of the first, the second, the third and the fourth planetary gear sets comprising a…

Assignees

• Zahnradfabrik Friedrichshafen

Inventors

• Beck Stefan
• Sibla Christian
• Rieger Wolfgang

Classifications

• F16H3/66 Primary

  Mechanical Engineering · mapped topic

• F16H2200/2064

  Mechanical Engineering · mapped topic

• F16H2200/0082

  Mechanical Engineering · mapped topic

• F16H2003/445

  Mechanical Engineering · mapped topic

• F16H2200/2097

  Mechanical Engineering · mapped topic