Vehicle transmission

Patent metadata

Field	Value
Publication number	US-10605337-B2
Application number	US-201815925149-A
Country	US
Kind code	B2
Filing date	Mar 19, 2018
Priority date	Mar 20, 2017
Publication date	Mar 31, 2020
Grant date	Mar 31, 2020

Abstract

A transmission for a motor vehicle wherein the drive shaft (An) is rotationally fixedly connectable by the first shift element (K1) to the first shaft (1) and by the second shift element (K2) to the second shaft (2). The second shaft (2) is rotationally fixedly connectable by the fifth shift element (B2) to the housing (3). The third shaft (4) is rotationally fixedly connected to the third gear set element of the second planetary gear set (RS2) and to the first gear set element of the third planetary gear set and is rotationally fixedly connectable by the sixth shift element (B1) to the housing (3). The second gear set element of the third planetary gear set (RS3) is rotationally fixedly connected to the output shaft (Ab), and the third gear set element of the third planetary gear set (RS3) is rotationally fixedly connected to the second shaft (2).

First claim

The invention claimed is:

1. A transmission, comprising:
a drive shaft (An);
an output shaft (Ab);
first, second and third planetary gear sets (RS 1 , RS 2 , RS 3 );
first, second, third, fourth, fifth and sixth shift elements (K 1 , K 2 , K 3 , K 4 , B 2 , B 1 );
first, second and third shafts ( 1 , 2 , 4 ); and
a housing ( 3 ),
wherein the drive shaft (An) is rotationally fixedly connectable by the first shift element (K 1 ) to the first shaft ( 1 ) and by the second shift element (K 2 ) to the second shaft ( 2 ),
wherein the first planetary gear set (RS 1 ) has first, second and third gear set elements, wherein one of the first, second or third gear set elements is rotationally fixedly connected to the housing ( 3 ), another of the first, second or third gear set elements is rotationally fixedly connected to the drive shaft (An), the first planetary gear set (RS 1 ) is configured to provide a rotational speed that is increased in relation to the drive shaft (An) at a further one of the first, second or third gear set elements,
wherein the further one of the first, second or third gear set elements is rotationally fixedly connectable by the third shift element (K 3 ) to the first shaft ( 1 ) and is rotationally fixedly connectable by the fourth shift element (K 4 ) to the third shaft ( 4 ),
wherein each of the second planetary gear set (RS 2 ) and the third planetary gear set (RS 3 ) has a first gear set element, a second gear set element and a third gear set element, the first gear set element of the second planetary gear set (RS 2 ) is rotationally fixedly connected to the first shaft ( 1 ), the second gear set element of the second planetary gear set (RS 2 ) is rotationally fixedly connected to the second gear set element of the third planetary gear set (RS 3 ), and the third gear set element of the second planetary gear set (RS 2 ) is rotationally fixedly connected to the first gear set element of the third planetary gear set (RS 3 ),
wherein the second gear set element of the third planetary gear set (RS 3 ) is rotationally fixedly connected to the output shaft (Ab), and the third gear set element of the third planetary gear set (RS 3 ) is rotationally fixedly connected to the second shaft ( 2 ),
wherein the second shaft ( 2 ) is rotationally fixedly connectable by the fifth shift element (B 2 ) to the housing ( 3 ), and the third shaft ( 4 ) is rotationally fixedly connected to the third gear set element of the second planetary gear set (RS 2 ) and to the first gear set element of the third planetary gear set and is rotationally fixedly connectable by the sixth shift element (B 1 ) to the housing ( 3 ), and
wherein the first gear set element of the second planetary gear set (RS 2 ) is a sun gear.

2. The transmission of claim 1 , wherein:
the first gear set element of the first planetary gear set (RS 1 ) is rotationally fixedly connected to the housing ( 3 );
the second gear set element of the first planetary gear set (RS 1 ) is rotationally fixedly connected to the drive shaft (An); and
the third gear set element of the first planetary gear set (RS 1 ) is rotationally fixedly connectable by the third shift element (K 3 ) to the first shaft ( 1 ) and by the fourth shift element (K 4 ) to the third shaft ( 4 ).

3. The transmission of claim 1 , wherein:
the first shift element (K 1 ) and the second shift element (K 2 ) are positioned within a first radial plane (E 1 ); and/or
the first, second and third gear set elements of the second planetary gear set (RS 2 ) and the first, second and third gear set elements of the third planetary gear set (RS 3 ) are positioned within a second radial plane (E 2 ).

4. The transmission of claim 1 , wherein the third shift element (K 3 ) and/or the fourth shift element (K 4 ) are arranged radially outside of the first planetary gear set (RS 1 ).

5. The transmission of claim 1 , wherein the sixth shift element (B 1 ) is arranged radially outside of the third shift element (K 3 ) and/or the fourth shift element (K 4 ).

6. The transmission of claim 1 , wherein the first planetary gear set (RS 1 ) is a minus planetary gear set, the first gear set element of the first planetary gear set is a sun gear, the second gear set element of the first planetary gear set is a carrier, and the third gear set element of the first planetary gear set is a ring gear.

7. The transmission of claim 1 , wherein the first planetary gear set (RS 1 ) is a plus planetary gear set, the first gear set element of the first planetary gear set is a sun gear, the second gear set element of the first planetary gear set is a ring gear, and the third gear set element of the first planetary gear set is a carrier.

8. The transmission of claim 1 , wherein the second planetary gear set (RS 2 ) is a minus planetary gear set, the second gear set element of the second planetary gear set is a carrier, and the third gear set element of the second planetary gear set is a ring gear.

9. The transmission of claim 1 , wherein the second planetary gear set (RS 2 ) is a plus planetary gear set, the second gear set element of the second planetary gear set is a ring gear, and the third gear set element of the second planetary gear set is a carrier.

10. The transmission of claim 1 , wherein the third planetary gear set (RS 3 ) is a minus planetary gear set, the first gear set element of the third planetary gear set is a sun gear, the second gear set element of the third planetary gear set is a carrier, and the third gear set element of the third planetary gear set is a ring gear.

11. The transmission of claim 1 , wherein the third planetary gear set (RS 3 ) is a plus planetary gear set, the first gear set element of the third planetary gear set is a sun gear, the second gear set element of the third planetary gear set is a ring gear, and the third gear set element of the third planetary gear set is a carrier.

12. The transmission of claim 1 , wherein:
a first gear ratio (G 1 ) is selectively realizable by closing the first shift element (K 1 ) and the sixth shift element (B 1 ) with the remaining shift elements being open;
a second gear ratio (G 2 ) is selectively realizable by closing the third shift element (K 3 ) and the sixth shift element (B 1 ) with the remaining shift elements being open;
a third gear ratio (G 3 ) is selectively realizable by closing the second shift element (K 2 ) and the sixth shift element (B 1 ) with the remaining shift elements being open;
a fourth gear ratio (G 4 ) is selectively realizable by closing the second shift element (K 2 ) and the third shift element (K 3 ) with the remaining shift elements being open;
a fifth gear ratio (G 5 ) is selectively realizable by closing the first shift element (K 1 ) and the second shift element (K 2 ) with the remaining shift elements being open;
a sixth gear ratio (G 6 ) is selectively realizable by closing the second shift element (K 2 ) and the fourth shift element (K 4 ) with the remaining shift elements being open;
a seventh gear ratio (G 7 ) is selectively realizable by closing the first shift element (K 1 ) and the fourth shift element (K 4 ) with the remaining shift elements being open;
an eighth gear ratio (G 8 ) is selectively realizable by closing the third shift element (K 3 ) and the fourth shift element (K 4 ) with the remaining shift elements being open;
a first reverse gear ratio (R 1 ) is selectively realizable by closing the first shift element (K 1 ) and the fifth shift element (B 2 ) with the remaining shift elements being open;
a second reverse gear ratio (R 2 ) is selectively realizable by closing the third shift element (K 3 ) and the fifth shift element (B 2 ) with the remain

Assignees

• Zahnradfabrik Friedrichshafen

Inventors

• Beck Stefan
• Bachmann Max
• Brehmer Martin
• Fritzer Anton
• Hendrawan Suryanto
• Horn Matthias
• Kaltenbach Johannes
• Kuberczyk Raffael
• Moraw Jens
• Niederbrucker Gerhard
• Pawlakowitsch Juri
• Rattay Martin
• Reisch Matthias
• Rieger Wolfgang
• Rosemeier Thomas
• Turner Lara Ruth
• Roske Michael
• Warth Viktor
• Unseld Bernd
• Wechs Michael
• Ziemer Peter

Classifications

• F16H2200/0086

  the gear ratios comprising two reverse speeds · CPC title

• F16H2200/201

  with three sets of orbital gears · CPC title

• F16H2200/006

  the gear ratios comprising eight forward speeds · CPC title

• F16H37/0833

  with arrangements for dividing torque between two or more intermediate shafts, i.e. with two or more internal power paths · CPC title

• B60K2006/4833

  Step up or reduction gearing driving generator, e.g. to operate generator in most efficient speed range · CPC title