Automated manual transmission

• US 10,641,358 B2
• Filed: 03/09/2018
• Issued: 05/05/2020
• Est. Priority Date: 11/24/2017
• Status: Active Grant

• Current Assignee: Hyundai Motor Company (Hyundai Motor Group), Kia Motors Corporation (Kia Corp.)
• Original Assignee: Hyundai Motor Company (Hyundai Motor Group)
• Inventors: Eo, Soon Ki, Ryu, Kun Sa, Suh, Hong Suk
• Primary Examiner(s): Scott, Jacob S.
• Assistant Examiner(s): Wu, Lori
• Application Number:
  US15/916,591
• Publication Number:
  US 20190162272A1
• Time in Patent Office: 788 Days
• CPC Class Codes: B60K 2006/4833 Step up or reduction gearing driving generator, e.g. to operate generator in most efficient speed range
• CPC Class Codes: B60K 6/383 One-way clutches or freewheel devices
• CPC Class Codes: B60K 6/48 Parallel type
• CPC Class Codes: B60K 6/547 the transmission being a stepped gearing
• CPC Class Codes: F16H 2003/0826 wherein at least one gear on the input shaft, or on a countershaft is used for two different forward gear ratios
• CPC Class Codes: F16H 2200/0047 the gear ratios comprising five forward speeds
• CPC Class Codes: F16H 2200/0056 the gear ratios comprising seven forward speeds
• CPC Class Codes: F16H 2200/0082 characterised by the number of reverse speeds
• CPC Class Codes: F16H 3/006 power being selectively transmitted by either one of the parallel flow paths
• CPC Class Codes: F16H 3/089 all of the meshing gears being supported by a pair of parallel shafts, one being the input shaft and the other the output shaft, there being no countershaft involved
• CPC Class Codes: F16H 3/10 with one or more one-way clutches as an essential feature
• CPC Class Codes: Y02T 10/62 Hybrid vehicles

Abstract

An automated manual transmission may include an input shaft selectively provided with torque from an engine through a clutch; an output shaft disposed in parallel with the input shaft; a shifting device including a plurality of gear pairs, which have different gear ratios and are engaged with each other on the input shaft and the output shaft, and selecting at least a gear pair out of the plurality of gear pairs, by using a coupling member; wherein the at least a gear pair corresponds to a speed of a vehicle a motor shaft connected to a motor and provided with torque from the motor; and clutch devices disposed between the motor shaft and the input shaft to transmit torque in a first direction thereof and between the motor shaft and the output shaft to transmit torque in a second direction thereof.

Claims

1. An automated manual transmission comprising:

an input shaft selectively provided with torque from an engine through a clutch;

an output shaft disposed in parallel with the input shaft;

a shifting device including a plurality of gear pairs, which have different gear ratios and are engaged with each other on the input shaft and the output shaft, and selecting at least a gear pair out of the plurality of gear pairs, by using a coupling member;

wherein the at least a gear pair corresponds to a speed of a vehicle;

a motor shaft connected to a motor and provided with torque from the motor; and

clutch devices disposed between the motor shaft and the input shaft to transmit torque in a first direction thereof and between the motor shaft and the output shaft to transmit torque in a second direction thereof,

wherein the clutch devices include;

a first one-way clutch mounted on a power transmission path between the motor shaft and the input shaft; and

a second one-way clutch mounted on a lower transmission path between the motor shaft and the output shaft,

wherein a first power transmission gear is disposed on the motor shaft and connected to the first one-way clutch on the motor shaft, the first power transmission gear engaged with a first year pair of the gear pairs of the shifting device,

wherein a second power transmission gear is disposed on the motor shaft and connected to the second one-way clutch on the motor shaft, the second power transmission gear engaged with a second gear pair of the gear pairs except for the first gear pair engaged with the first power transmission gear,

wherein the first gear pair includes a first gear continuously rotating with the input shaft and the first power transmission gear is engaged with the first gear continuously rotating with the input shaft, and

wherein the second gear pair includes a second gear continuously rotating with the output shaft and the second power transmission gear is engaged with the second near continuously rotating with the output shaft.

2. The automated manual transmission of claim 1, wherein the clutch devices include:

the first one-way clutch mounted on the motor shaft; and

the second one-way clutch mounted on the motor shaft.

3. The automated manual transmission of claim 1,

wherein the first gear pair includes a third gear rotatably mounted on the output shaft and the first gear continuously rotating with the input shaft is engaged with the third gear rotatably mounted on the output shaft;

and

wherein the second gear pair includes a fourth gear rotatably mounted on the input shaft and the second gear continuously rotating with the output shaft is engaged with the fourth gear rotatably mounted on the input shaft.

4. The automated manual transmission of claim 1,

wherein the first one-way clutch is disposed between the motor shaft and the first power transmission gear, and

the second one-way clutch is disposed between the motor shaft and the second power transmission gear.