Multi-speed transmission
AssigneeZF Friedrichshafen AG
InventorStefan Beck
Life of this patent
Estimating the term…
Abstract
A multi-stage, space-saving transmission comprises a drive shaft and an output shaft arranged parallel to each other, at least eight other rotating shafts, three planetary gear sets, three spur gear stages, and six elements, comprising two brakes and four clutches. Selective meshing of the six elements brings about nine forward gears and one reverse gear. The first planetary gear set is coaxial to a first axis, defined by the drive shaft, and the second and third planetary gear sets are coaxial to a second axis, defined by the output shaft.
Claims36
An automatic multistage transmission for a motor vehicle, comprising:
- a drive shaft (1);
- an output shaft (2) arranged parallel to the drive shaft (1);
- a first planetary gear set (P1), a second planetary gear set (P2), and a third planetary gear set (P3), the first planetary gear set (P1) arranged coaxial to a first axis defined by the drive shaft (1), and the second and third planetary gear sets (P2, P3) arranged coaxial to a second axis that is arranged parallel to the first axis and is defined by the output shaft (2);
- the drive shaft (1) detachably connectable through a first clutch (13) to a third shaft (3) connected to a sun gear of the first planetary gear set (P1), which is attachable to a housing (G) of the transmission through a first brake (03);
- the drive shaft (1) detachably connectable through a second clutch (17) to a seventh shaft (7) connected to a ring gear of the first planetary gear set (P1);
- a sixth shaft (6) connected to a bar of the first planetary gear set (P1) and, through a second spur gear stage (S2), with a tenth shaft (10) connected to a ring gear of the third planetary gear set (P3);
- the output shaft (2) connected to bar of the second planetary gear set (P2);
- a fourth shaft (4) connected to a sun gear of the second planetary gear set (P2) and the sun gear of the third planetary gear set (P3), and attachable to the housing G through a second brake (04);
- the drive shaft (1), through an eighth and a ninth shaft (8, 9), a first spur gear stage (S1), and through one of a) a third clutch (18) or b) a fifth clutch (89), is in operative connection with a ring gear of the second planetary gear set (P2) and a bar of the third planetary gear set (P3);
- and
- wherein the third shaft (3), through a fifth and tenth shaft (5, 10), a third spur gear stage (S3), and through one of a) a fourth clutch (35) or b) a sixth clutch (15), is in operative connection with the ring gear of the third planetary gear set (P3).
An automatic multistage transmission for a motor vehicle, comprising:
- a drive shaft (1);
- an output shaft (2) arranged parallel to the drive shaft (1);
- a first planetary gear set (P1), a second planetary gear set (P2), and a third planetary gear set (P3), the first planetary gear set (P1) arranged coaxial to a first axis defined by the drive shaft (1), and the second and third planetary gear sets (P2, P3) arranged coaxial to a second axis that is arranged parallel to the first axis and is defined by the output shaft (2);
- the drive shaft (1) connected to a ring gear of the first planetary gear set (P1) and detachably connectable through a first clutch (13) to a third shaft (3), which is attachable to a housing (G) of the transmission through a first brake (03);
- the drive shaft (1) detachably connectable through a second clutch (17) to a seventh shaft (7) connected to a sun gear of the first planetary gear set (P1);
- a sixth shaft (6) connected to a bar of the first planetary gear set (P1) and, through a second spur gear stage (S2), with a tenth shaft (10) connected to a ring gear of the third planetary gear set (P3);
- the output shaft (2) connected to bar of the second planetary gear set (P2);
- a fourth shaft (4) connected to a sun gear of the second planetary gear set (P2) and the sun gear of the third planetary gear set (P3), and attachable to the housing G through a second brake (04);
- the drive shaft (1), through an eighth and a ninth shaft (8, 9), a first spur gear stage (S1), and through one of a) a third clutch (18) or b) a fifth clutch (89) and, is in operative connection with a ring gear of the second planetary gear set (P2) and a bar of the third planetary gear set (P3);
- and
- wherein the third shaft (3), through a fifth and tenth shaft (5, 10), a third spur gear stage (S3), and through one of a) a fourth clutch (35) or b), a sixth clutch (15), is in operative connection with the ring gear of the third planetary gear set (P3).
An automatic multistage transmission for a motor vehicle, comprising:
- a drive shaft (1);
- an output shaft (2) arranged parallel to the drive shaft (1);
- a first planetary gear set (P1), a second planetary gear set (P2), and a third planetary gear set (P3), the first planetary gear set (P1) arranged coaxial to a first axis defined by the drive shaft (1), and the second and third planetary gear sets (P2, P3) arranged coaxial to a second axis that is arranged parallel to the first axis and is defined by the output shaft (2);
- the drive shaft (1) connected to a ring gear of the first planetary gear set (P1) and detachably connectable through a first clutch (13) to a third shaft (3), which is attachable to a housing (G) of the transmission through a first brake (03);
- a sixth shaft (6) detachably connectable through an eighth clutch (67) with a seventh shaft (7) connected to a bar of the first planetary gear set (P1) and, through a second spur gear stage (S2), is in operative connection with a tenth shaft (10) connected to a ring gear of the third planetary gear set (P3);
- the output shaft (2) connected to a bar of the second planetary gear set (P2);
- a fourth shaft (4) is connected to a sun gear of the second planetary gear set (P2) and a sun gear of the third planetary gear set (P3), and attachable to the housing (G) through a second brake (04);
- the drive shaft (1), through an eighth and a ninth shaft (8, 9), a first spur gear stage (S1), and through one of a) a third clutch (18) or b) a fifth clutch (89), in operative connection with a ring gear of the second planetary gear set (P2) and a bar of the third planetary gear set (P3);
- and
- the third shaft (3), through a fifth and tenth shaft (5, 10), a third spur gear stage (S3), and through one of a) a fourth clutch (35) or b) a sixth clutch (15), is in operative connection with the ring gear of the third planetary gear set (P3).
An automatic multistage transmission for a motor vehicle, comprising:
- a drive shaft (1);
- an output shaft (2) arranged parallel to the drive shaft (1);
- a first planetary gear set (P1), a second planetary gear set (P2), and a third planetary gear set (P3), the first planetary gear set (P1) arranged coaxial to a first axis defined by the drive shaft (1), and the second and third planetary gear sets (P2, P3) arranged coaxial to a second axis that is arranged parallel to the first axis and is defined by the output shaft (2);
- the drive shaft (1) is connected to a ring gear of the first planetary gear set (P1) and is detachably connectable through a first clutch (13) to a third shaft (3) connected to a sun gear of the first planetary gear set (P1), which is attachable to a housing (G) of the transmission through a first brake (03);
- a sixth shaft (6) is connected to a bar of the first planetary gear set (P1) and, through a second spur gear stage (S2), is in operative connection with a seventh shaft (7), which is detachably connectable through a ninth clutch (107) with a tenth shaft (10) connected to a ring gear of the third planetary gear set (P3);
- the output shaft (2) connected to a bar of the second planetary gear set (P2);
- a fourth shaft (4) connected to a sun gear of the second planetary gear set (P2) and a sun gear of the third planetary gear set (P3), and attachable to the housing (G) through a second brake (04);
- the input shaft (1), through an eighth and a ninth shaft (8, 9), a first spur gear stage (S1), and through one of a) a third clutch (18) or b) a fifth clutch (89), is in operative connection with the a gear of the second planetary gear set (P2) and a bar of the third planetary gear set (P3);
- and
- wherein the third shaft (3), through a fifth and tenth shaft (5, 10), a third spur gear stage (S3), and through one of a) a fourth clutch (35) or b) a sixth clutch (15), is in operative connection with a ring gear of the third planetary gear set (P3).
Dependencies are inferred from the claim text.