Double-clutch transmission
AssigneeLuK Lamellen und Kupplungsbau Beteiligungs KG
InventorsThomas Pels, Dierk Reitz, Reinhard Berger, Wolfgang Reik, Robert Fischer
Life of this patent
Estimating the term…
Abstract
A double clutch transmission in connection with an electric unit, as well as a method for operating the transmission.
Claims59
A transmission for a motor vehicle, the transmission having multiple shafts including a first, at least single-piece and a second, at least single-piece transmission input shaft and at least one transmission output shaft, said transmission comprising:
- a) a plurality of gear pairs arranged between the transmission output shaft and the transmission input shafts, said gear pairs including an idler non-rotatably secured to one of the shafts, and a drive gear arranged to mesh with an idler and non-rotatably carried on a shaft for providing gear stages having different gear ratios between the transmission output shaft and one of the transmission input shafts;
- b) at least one transmission input shaft driven by a drive unit having a drive shaft;
- c) at least one transmission input shaft operatively connected with a first electrical machine;
- d) wherein the transmission output shaft is operatively connected with at least one driving wheel;
- and
- e) wherein at least one gear stage is actuated automatically by at least one actuator, and including a synchronizing device for synchronously coupling idlers to one of a transmission input shaft and a transmission output shaft to synchronize the r.p.m. of the idler and the shaft carrying the idler.
A transmission for a motor vehicle, the transmission having multiple shafts including a first, at least single-piece and a second, at least single-piece transmission input shaft and at least one transmission output shaft, said transmission comprising:
- a) a plurality of gear pairs arranged between the transmission output shaft and the transmission input shafts, said gear pairs including an idler non-rotatably secured to one of the shafts, and a drive gear arranged to mesh with an idler and non-rotatably carried on a shaft for providing gear stages having different gear ratios between the transmission output shaft and one of the transmission input shafts;
- b) at least one transmission input shaft driven by a drive unit having a drive shaft;
- c) at least one transmission input shaft operatively connected with a first electrical machine;
- d) wherein the transmission output shaft is operatively connected with at least one driving wheel;
- and
- e) wherein at least one gear stage is actuated automatically by at least one actuator, and wherein the transmission includes two transmission output shafts and two transmission input shafts, and wherein at least some of one group of gears between the first transmission output shaft and one of the transmission input shafts, and at least some of a second group of gears positioned between the second transmission output shaft and one of the two transmission input shafts are shiftable and the electrical machine is operatively connected to at least one of the transmission output shafts.
A transmission for a motor vehicle, the transmission having multiple shafts including a first, at least single-piece and a second, at least single-piece transmission input shaft and at least one transmission output shaft, said transmission comprising:
- a) a plurality of gear pairs arranged between the transmission output shaft and the transmission input shafts, said gear pairs including an idler non-rotatably secured to one of the shafts, and a drive gear arranged to mesh with an idler and non-rotatably carried on a shaft for providing gear stages having different gear ratios between the transmission output shaft and one of the transmission input
- b) at least one transmission input shaft driven by a drive unit having a drive shaft;
- c) at least one transmission input shaft operatively connected with a first electrical machine;
- d) wherein the transmission output shaft is operatively connected with at least one driving wheel;
- and
- e) wherein at least one pear stage is actuated automatically by at least one actuator, and including a torsional vibration damping device positioned in the power distribution flow between the drive shaft and the transmission input shafts, wherein the torsional vibration damping device is a two-mass flywheel.
A transmission for a motor vehicle, the transmission having multiple shafts including a first, at least single-piece and a second, at least single-piece transmission input shaft and at least one transmission output shaft, said transmission comprising:
- a) a plurality of gear pairs arranged between the transmission output shaft and the transmission input shafts, said gear pairs including an idler non-rotatably secured to one of the shafts, and a drive gear arranged to mesh with an idler and non-rotatably carried on a shaft for providing gear stages having different gear ratios between the transmission output shaft and one of the transmission input shafts;
- b) at least one transmission input shaft driven by a drive unit having a drive shaft;
- c) at least one transmission input shaft operatively connected with a first electrical machine, wherein the electrical machine can be connected with one of the transmission input shafts through a shift sleeve that is provided for shifting an individual gear, including means for uncoupling the first electrical machine from the at least one transmission input shaft;
- d) wherein the transmission output shaft is operatively connected with at least one driving wheel;
- and
- e) wherein at least one gear stage is actuated automatically by at least one actuator.
A transmission for a motor vehicle, the transmission having multiple shafts including a first, at least single-piece and a second, at least single-piece transmission input shaft and at least one transmission output shaft, said transmission comprising:
- a) a plurality of gear pairs arranged between the transmission output shaft and the transmission input shafts, said gear pairs including an idler non-rotatably secured to one of the shafts, and a drive gear arranged to mesh with an idler and non-rotatably carried on a shaft for providing gear stages having different gear ratios between the transmission output shaft and one of the transmission input shafts;
- b) at least one transmission input shaft driven by a drive unit having a drive shaft;
- c) at least one transmission input shaft operatively connected with a first electrical machine, wherein the electrical machine that is drivingly connected with a transmission input shaft is connected with the transmission output shaft through a shift sleeve for the purpose of shifting a gear, with the transfer of torque occurring through the gears that form the gear ratio of the gear, including means for uncoupling the first electrical machine from the at least one transmission input shaft;
- d) wherein the transmission output shaft is operatively connected with at least one driving wheel;
- and
- e) wherein at least one gear stage is actuated automatically by at least one actuator.
A transmission for a motor vehicle, the transmission having multiple shafts including a first, at least single-piece and a second, at least single-piece transmission input shaft and at least one transmission output shaft, said transmission comprising:
- a) a plurality of gear pairs arranged between the transmission output shaft and the transmission input shafts, said gear pairs including an idler non-rotatably secured to one of the shafts, and a drive gear arranged to mesh with an idler and non-rotatably carried on a shaft for providing gear stages having different gear ratios between the transmission output shaft and one of the transmission input shafts;
- b) at least one transmission input shaft driven by a drive unit having a drive shaft;
- c) at least one transmission input shaft operatively connected with a first electrical machine;
- d) wherein the transmission output shaft is operatively connected with at least one driving wheel;
- and
- e) wherein at least one gear stage is actuated automatically by at least one actuator, and wherein a gear on the first transmission input shaft and a gear on the second transmission input shaft can be shifted to transfer torque from an electrical machine that is operatively connected to one of the gears to the drive shaft through one of the transmission input shafts, without transferring any torque from the transmission input shafts to at least one driving wheel.
Dependencies are inferred from the claim text.