PLANETARY GEAR TRAIN OF AUTOMATIC TRANSMISSION FOR VEHICLE

• US 20190170219A1
• Filed: 04/25/2018
• Published: 06/06/2019
• Est. Priority Date: 12/05/2017
• Status: Active Grant

• Current Assignee: Hyundai Motor Company (Hyundai Motor Group), Kia Motors Corporation (Kia Corp.)
• Original Assignee: Hyundai Motor Company (Hyundai Motor Group), Kia Motors Corporation (Kia Corp.)
• Inventors: KIM, Jin Ho, Lee, Jae Joon, Park, Jong Sool, Lee, Kyeong Hun, Kim, Jong Soo
• Granted Patent: US 10,641,361 B2
• Time in Patent Office: Days
• CPC Class Codes: F16H 2200/0069 the gear ratios comprising ten forward speeds
• CPC Class Codes: F16H 2200/2015 with five sets of orbital gears
• CPC Class Codes: F16H 2200/2046 with six engaging means
• CPC Class Codes: F16H 3/66 composed of a number of gear trains without drive passing from one train to another

Abstract

A planetary gear train apparatus of automatic transmission may include input and output shafts first to fifth planetary gear sets respectively having first to third, fourth to sixth, seventh to ninth, tenth to twelfth, and thirteenth to fifteenth elements, first shaft fixed to the third element and the input shaft, second shaft fixed to the fourteenth element and the output shaft, third shaft fixed to the first and fourth elements, fourth shaft fixed to the second, eighth, and fifteenth elements, fifth shaft fixed to the fifth element, sixth shaft fixed to the sixth, ninth element, and eleventh elements, and shafts, each of which is selectively connectable to housing and fixed to element of the third, fourth, and fifth planetary gear sets which is not fixed to the first to sixth shafts.

Claims

1. A planetary gear train apparatus of an automatic transmission for a vehicle, the apparatus comprising:

an input shaft receiving an input torque;

an output shaft outputting a shifted torque;

a first planetary gear set having a first rotation element, a second rotation element, and a third rotation element;

a second planetary gear set having a fourth rotation element, a fifth rotation element, and a sixth rotation element;

a third planetary gear set having a seventh rotation element, an eighth rotation element, and a ninth rotation element;

a fourth planetary gear set having a tenth rotation element, an eleventh rotation element, and a twelfth rotation element;

a fifth planetary gear set having a thirteenth rotation element, a fourteenth rotation element, and a fifteenth rotation element;

a first shaft fixedly connected to the third rotation element and the input shaft;

a second shaft fixedly connected to the fourteenth rotation element and the output shaft;

a third shaft fixedly connected to the first rotation element and the fourth rotation element;

a fourth shaft fixedly connected to the second rotation element, the eighth rotation element, and the fifteenth rotation element;

a fifth shaft fixedly connected to the fifth rotation element;

a sixth shaft fixedly connected to the sixth rotation element, the ninth rotation element, and the eleventh rotation element; and

a plurality of shafts, each of which is selectively connectable to a transmission housing and fixedly connected to a rotation element of the third, fourth, and fifth planetary gear sets which is not fixedly connected to the first to sixth shafts.

2. The planetary gear train apparatus of claim 1, wherein the plurality of shafts includes:

a seventh shaft fixedly connected to the seventh rotation element and the tenth rotation element and selectively connectable to the transmission housing;

an eighth shaft fixedly connected to the twelfth rotation element and selectively connectable to the transmission housing; and

a ninth shaft fixedly connected to the thirteenth rotation element and selectively connectable to the transmission housing,

wherein the second and third shafts are selectively interconnected, the fifth and ninth shafts are selectively interconnected, and two shafts among the third, fifth, and sixth shafts are selectively interconnected.

3. The planetary gear train apparatus of claim 2, further including:

three clutches each selectively connecting a corresponding pair among the input shaft, the output shaft, and the first to ninth shafts; and

three brakes selectively connecting the seventh shaft, the eighth shaft, and the ninth shaft to the transmission housing, respectively.

4. The planetary gear train apparatus of claim 3, wherein

the three clutches comprise:

a first clutch mounted between the second shaft and the third shaft;

a second clutch mounted between the third shaft and the sixth shaft; and

a third clutch mounted between the fifth shaft and the ninth shaft, and

the three brakes comprise;

a first brake mounted between the seventh shaft and the transmission housing;

a second brake mounted between the eighth shaft and the transmission housing; and

a third brake mounted between the ninth shaft and the transmission housing.

5. The planetary gear train apparatus of claim 3, wherein

the three clutches comprise:

a first clutch mounted between the second shaft and the third shaft;

a second clutch mounted between the third shaft and the fifth shaft; and

a third clutch mounted between the fifth shaft and the ninth shaft, and

the three brakes comprise;

a first brake mounted between the seventh shaft and the transmission housing;

a second brake mounted between the eighth shaft and the transmission housing; and

a third brake mounted between the ninth shaft and the transmission housing.

6. The planetary gear train apparatus of claim 3, wherein

the three clutches comprise:

a first clutch mounted between the second shaft and the third shaft;

a second clutch mounted between the fifth shaft and the sixth shaft; and

a third clutch mounted between the fifth shaft and the ninth shaft, and

the three brakes comprise;

a first brake mounted between the seventh shaft and the transmission housing;

a second brake mounted between the eighth shaft and the transmission housing; and

a third brake mounted between the ninth shaft and the transmission housing.

7. The planetary gear train apparatus of claim 1, wherein

the first rotation element, the second rotation element, and the third rotation element are a first sun gear, a first planet carrier, and a first ring gear, respectively;

the fourth rotation element, the fifth rotation element, and the sixth rotation element are a second sun gear, a second planet carrier, and a second ring gear, respectively;

the seventh rotation element, the eighth rotation element, and the ninth rotation element are a third sun gear, a third planet carrier, and a third ring gear, respectively;

the tenth rotation element, the eleventh rotation element, and the twelfth rotation element are a fourth sun gear, a fourth planet carrier, and a fourth ring gear, respectively;

the thirteenth rotation element, the fourteenth rotation element, and the fifteenth rotation element are a fifth sun gear, a fifth planet carrier, and a fifth ring gear, respectively.

8. The planetary gear train apparatus of claim 1, wherein the first, second, third, fourth, and fifth planetary gear sets are disposed in an order of the first, third, fourth, second, and fifth planetary gear sets from an input side thereof.

9. A planetary gear train apparatus of an automatic transmission for a vehicle, including:

an input shaft receiving an input torque;

an output shaft outputting a shifted torque;

a first planetary gear set having a first rotation element, a second rotation element, and a third rotation element;

a second planetary gear set having a fourth rotation element, a fifth rotation element, and a sixth rotation element;

a third planetary gear set having a seventh rotation element, an eighth rotation element, and a ninth rotation element;

a fourth planetary gear set having a tenth rotation element, an eleventh rotation element, and a twelfth rotation element;

a fifth planetary gear set having a thirteenth rotation element, a fourteenth rotation element, and a fifteenth rotation element;

wherein the third rotation element is fixedly connected to the input shaft,

the fourteenth rotation element is fixedly connected to the output shaft,

the first rotation element is fixedly connected to the fourth rotation element, and selectively connectable to the fourteenth rotation element,

the second rotation element is fixedly connected to the eighth rotation element and the fifteenth rotation element,

the fifth rotation element is selectively connectable to the thirteenth rotation element,

the sixth rotation element is fixedly connected to the ninth rotation element and the eleventh rotation element,

the seventh rotation element is fixedly connected to the tenth rotation element, and selectively connectable to a transmission housing,

the twelfth rotation element is selectively connectable to the transmission housing,

the thirteenth rotation element is selectively connectable to the transmission housing.

10. The planetary gear train apparatus of claim 9, wherein two rotation elements among the fourth rotation element, the fifth rotation element, and the sixth rotation element of the second planetary gear set are selectively connectable with each other.

11. The planetary gear train apparatus of claim 10, further including:

three clutches each selectively connecting a corresponding pair among the first to fifteenth rotation elements; and

three brakes selectively connecting the tenth rotation element, the twelfth rotation element, and the thirteenth rotation element to the transmission housing, respectively.

12. The planetary gear train apparatus of claim 11, wherein

the three clutches comprise:

a first clutch mounted between the fourth rotation element and the fourteenth rotation element;

a second clutch mounted between the fourth rotation element and the sixth rotation element; and

a third clutch mounted between the fifth rotation element and the thirteenth rotation element, and

the three brakes comprise;

a first brake mounted between the tenth rotation element and the transmission housing;

a second brake mounted between the twelfth rotation element and the transmission housing; and

a third brake mounted between the thirteenth rotation element and the transmission housing.

13. The planetary gear train apparatus of claim 12, wherein the first brake is mounted between the seventh rotation element and the transmission housing.

14. The planetary gear train apparatus of claim 11, wherein

the three clutches comprise:

a first clutch mounted between the fourth rotation element and the fourteenth rotation element;

a second clutch mounted between the fourth rotation element and the fifth rotation element; and

a third clutch mounted between the fifth rotation element and the thirteenth rotation element, and

the three brakes comprise;

a first brake mounted between the tenth rotation element and the transmission housing;

a second brake mounted between the twelfth rotation element and the transmission housing; and

a third brake mounted between the thirteenth rotation element and the transmission housing.

15. The planetary gear train apparatus of claim 14, wherein the first brake is mounted between the seventh rotation element and the transmission housing.

16. The planetary gear train apparatus of claim 11, wherein

the three clutches comprise:

a first clutch mounted between the fourth rotation element and the fourteenth rotation element;

a second clutch mounted between the fifth rotation element and the sixth rotation element; and

a third clutch mounted between the fifth rotation element and the thirteenth rotation element, and

the three brakes comprise;

a first brake mounted between the tenth rotation element and the transmission housing;

a second brake mounted between the twelfth rotation element and the transmission housing; and

a third brake mounted between the thirteenth rotation element and the transmission housing.

17. The planetary gear train apparatus of claim 16, wherein the first brake is mounted between the seventh rotation element and the transmission housing.

18. The planetary gear train apparatus of claim 9, wherein

the first rotation element, the second rotation element, and the third rotation element are a first sun gear, a first planet carrier, and a first ring gear, respectively;

the fourth rotation element, the fifth rotation element, and the sixth rotation element are a second sun gear, a second planet carrier, and a second ring gear, respectively;

the seventh rotation element, the eighth rotation element, and the ninth rotation element are a third sun gear, a third planet carrier, and a third ring gear, respectively;

the tenth rotation element, the eleventh rotation element, and the twelfth rotation element are a fourth sun gear, a fourth planet carrier, and a fourth ring gear, respectively; and

the thirteenth rotation element, the fourteenth rotation element, and the fifteenth rotation element are a fifth sun gear, a fifth planet carrier, and a fifth ring gear, respectively.

19. The planetary gear train apparatus of claim 9, wherein the first, second, third, fourth, and fifth planetary gear sets are disposed in an order of the first, third, fourth, second, and fifth planetary gear sets from an input side thereof.