Hybrid powertrain for vehicle

Patent metadata

Field	Value
Publication number	US-12157370-B2
Application number	US-202217660553-A
Country	US
Kind code	B2
Filing date	Apr 25, 2022
Priority date	Jul 7, 2021
Publication date	Dec 3, 2024
Grant date	Dec 3, 2024

Abstract

An embodiment hybrid powertrain for a vehicle includes a first input shaft configured to be interlocked with an engine, a second input shaft configured to be interlocked with a first motor and to be parallel to the first input shaft, a third input shaft configured to be interlocked with a second motor and to be parallel to the second input shaft, an output shaft mounted parallel to the third input shaft, a first selective mesh device configured to transmit power from the second input shaft to the output shaft at multiple different gear ratios, a second selective mesh device configured to transmit the power from the third input shaft to the output shaft at the multiple different gear ratios, and a third selective mesh device configured to transmit the power from the first input shaft to the second input shaft or the third input shaft.

First claim

What is claimed is:

1. A hybrid powertrain for a vehicle, the hybrid powertrain comprising:
a first input shaft configured to always receive power from an engine;
a second input shaft configured always transfer the power to and from a first motor and to be parallel to the first input shaft;
a third input shaft configured always transfer the power to and from a second motor and to be parallel to the second input shaft;
an output shaft mounted parallel to the third input shaft;
a first selective mesh device configured to transmit the power from the second input shaft to the output shaft at multiple different gear ratios;
a second selective mesh device configured to transmit the power from the third input shaft to the output shaft at the multiple different gear ratios; and
a third selective mesh device configured to selectively transmit the power from the first input shaft to the second input shaft and the third input shaft.

2. The hybrid powertrain according to claim 1 , further comprising:
a first gear and a second gear mounted on the second input shaft and configured to be non-rotatable relative to the second input shaft; and
a third gear and a fourth gear mounted on the output shaft and configured to be rotatable relative to the output shaft and to mesh with the first gear and the second gear, respectively, wherein the first selective mesh device is configured to connect the third gear or the fourth gear to the output shaft.

3. The hybrid powertrain according to claim 2 , further comprising:
a fifth gear and a sixth gear mounted on the output shaft and configured to be non-rotatable relative to the output shaft; and
a seventh gear and an eighth gear mounted on the third input shaft and configured to be rotatable relative to the third input shaft and to mesh with the fifth gear and the sixth gear, respectively, wherein the second selective mesh device is configured to connect the seventh gear or the eighth gear to the third input shaft.

4. The hybrid powertrain according to claim 3 , further comprising:
a ninth gear mounted on the third input shaft and configured to be non-rotatable relative to the third input shaft; and
a tenth gear and an eleventh gear mounted on the first input shaft and configured to be rotatable relative to the first input shaft and to mesh with the second gear and the ninth gear, respectively, wherein the third selective mesh device is configured to connect the tenth gear or the eleventh gear to the first input shaft.

5. The hybrid powertrain according to claim 4 , wherein the third input shaft is configured to be interlocked with the second motor via the ninth gear and the eleventh gear in that order.

6. The hybrid powertrain according to claim 5 , further comprising an idler gear configured to mesh with the eleventh gear, wherein the idler gear is configured to transmit the power from the second motor to the third input shaft.

7. The hybrid powertrain according to claim 4 , further comprising an output gear mounted on the output shaft and configured to be non-rotatable relative to the output shaft, wherein the output gear is configured to output the power to a differential.

8. The hybrid powertrain according to claim 1 , wherein the first selective mesh device, the second selective mesh device, or the third selective mesh device is a dog clutch.

9. The hybrid powertrain according to claim 1 , wherein the first selective mesh device, the second selective mesh device, or the third selective mesh device is a synchromesh device.

10. A vehicle comprising:
a vehicle body;
an engine mounted in the vehicle body;
a first motor mounted in the vehicle body;
a second motor mounted in the vehicle body; and
a powertrain device mounted in the vehicle body, the powertrain device comprising:
a first input shaft installed to always receive power from the engine;
a second input shaft installed to always transfer the power to and from the first motor and parallel to the first input shaft;
a third input shaft installed to always transfer the power to and from the second motor and parallel to the second input shaft;
an output shaft mounted parallel to the third input shaft;
a first selective mesh device configured to transmit the power from the second input shaft to the output shaft at multiple different gear ratios;
a second selective mesh device configured to transmit the power from the third input shaft to the output shaft at the multiple different gear ratios; and
a third selective mesh device configured to selectively transmit the power from the first input shaft to the second input shaft and the third input shaft.

11. The vehicle according to claim 10 , further comprising:
a first gear and a second gear mounted on the second input shaft and configured to be non-rotatable relative to the second input shaft; and
a third gear and a fourth gear mounted on the output shaft and configured to be rotatable relative to the output shaft and to mesh with the first gear and the second gear, respectively, wherein the first selective mesh device is configured to connect the third gear or the fourth gear to the output shaft.

12. The vehicle according to claim 11 , further comprising:
a fifth gear and a sixth gear mounted on the output shaft and configured to be non-rotatable relative to the output shaft;
a seventh gear and an eighth gear mounted on the third input shaft and configured to be rotatable relative to the third input shaft and to mesh with the fifth gear and the sixth gear, respectively, wherein the second selective mesh device is configured to connect the seventh gear or the eighth gear to the third input shaft;
a ninth gear mounted on the third input shaft and configured to be non-rotatable relative to the third input shaft; and
a tenth gear and an eleventh gear mounted on the first input shaft and configured to be rotatable relative to the first input shaft and to mesh with the second gear and the ninth gear, respectively, wherein the third selective mesh device connects the tenth gear or the eleventh gear to the first input shaft.

13. The vehicle according to claim 12 , wherein the third input shaft is configured to be interlocked with the second motor via the ninth gear and the eleventh gear in that order.

14. The vehicle according to claim 13 , further comprising an idler gear configured to mesh with the eleventh gear, wherein the idler gear is configured to transmit the power from the second motor to the third input shaft.

15. The vehicle according to claim 12 , further comprising an output gear mounted on the output shaft and configured to be non-rotatable relative to the output shaft, wherein the output gear is configured to output the power to a differential.

16. The vehicle according to claim 10 , wherein the first selective mesh device, the second selective mesh device, or the third selective mesh device is a dog clutch.

17. The vehicle according to claim 10 , wherein the first selective mesh device, the second selective mesh device, or the third selective mesh device is a synchromesh device.

18. A method of providing a hybrid powertrain for a vehicle, the method comprising:
interlocking a first input shaft with an engine for a constant connection;
interlocking a second input shaft with a first motor for a constant connection, the second input shaft being parallel to the first input shaft;
interlocking a third input shaft with a second motor for a constant connection, the third input shaft being parallel to the second input shaft;
mounting an output shaft parallel to the third input shaft;
tr

Assignees

• Hyundai Motor Co Ltd
• Kia Corp

Inventors

• Kwon Hyuk Joon
• Yang Ho Rim
• Suh Buhm Joo
• Choi Woul Sun
• Lee Seung Wook
• Kim Seok Joon
• Kim Tal Chol
• Choi Yeong Il

Classifications

• F16H3/006

  power being selectively transmitted by parallel flow paths, e.g. dual clutch transmissions · CPC title

• B60Y2200/92

  Hybrid vehicles · CPC title

• F16H2200/0078

  the gear ratio comprising twelve or more forward speeds · CPC title

• B60K6/48 Primary

  Parallel type · CPC title

• B60K2006/4816

  Electric machine connected or connectable to gearbox internal shaft · CPC title