US 10,704,652 B2 · Power transmission apparatus for vehicle

Power transmission apparatus for vehicle

AssigneesHyndai Motor Company, Kia Motors Corporation

InventorsCheol Ho Jang, Ki Dong Kim, Seong Wook Hwang, Kijong Park, Yong Uk Shin, Seongwook Ji, Ki Tae Kim, Chon Ok Kim, Wonmin Cho, Hyun Sik Kwon, Ilhan Yoo, Juhyeon Park, Minho Chae, Dongwoo Kim, Hye Jin Lim, Soonki Eo, Yong Sug Choi, Sun Sung Kwon

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Abstract

A power transmission apparatus configured for a vehicle may include a first input shaft fixedly connected to a motor/generator, a second input shaft selectively connectable to the first input shaft, a third input shaft selectively connectable to the first input shaft, a torque mediating shaft externally disposed with the first input shaft, an intermediate shaft, an idle shaft, an output shaft, a first shifting section selectively receiving a torque from the third input shaft, shifting the received torque and outputting the shifted torque, a second shifting section shifting a torque from the first input shaft to the torque mediating shaft, or stopping a rotation of the torque mediating shaft, and a third shifting section selectively receiving a torques from the first and second shifting sections and a torque from the second input and outputting shifted torque to the output shaft.

Drawings

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Drawings

Claims12

Dependent claims

A power transmission apparatus for a vehicle, the power transmission apparatus comprising:

an engine including an engine output shaft;
a motor/generator selectively connectable to the engine output shaft;
a first input shaft fixedly connected to the motor/generator;
a second input shaft formed as a hollow shaft, coaxially and rotatably mounted on a first portion of the first input shaft without rotational interference between the first input shaft and the second input shaft, and selectively connectable to the first input shaft;
a third input shaft formed as a hollow shaft, coaxially and rotatably mounted on the second input shaft without rotational interference between the second input shaft and the third input shaft, and selectively connectable to the first input shaft;
a torque mediating shaft formed as a hollow shaft and coaxially and rotatably mounted on a second portion of the first input shaft without rotational interference between the first input shaft and the torque mediating shaft;
an intermediate shaft mounted in parallel with the first input shaft;
an idle shaft mounted in parallel with the first input shaft;
an output shaft mounted in parallel with the first input shaft and outputting an output torque;
a first shifting section including first, second, third, and fourth gear sets, wherein the first shifting section is configured for selectively receiving a torque from the third input shaft, shifting the received torque and outputting the shifted torque;
a second shifting section including a first planetary gear set having a plurality of rotation elements including a first ring gear fixedly connected to the first input shaft, wherein the second shifting section is configured for shifting a torque received from the first input shaft to the torque mediating shaft in reduced rotation speed or as inputted, or for stopping a rotation of the torque mediating shaft;
and
a third shifting section including a fifth gear set and a second planetary gear set having a plurality of rotation elements including a second sun gear fixedly connected to the output shaft, wherein the third shifting section is configured for selectively receiving a torque from the first and second shifting sections through the second gear set and a torque from the second input shaft through the fifth gear set and for outputting shifted torque to the output shaft.

10 more elements

Dependencies are inferred from the claim text.

Description6,536 words

Summary1,455 words

#The present application claims priority to Korean Patent Application No. 10-2018-0098116 filed on Aug. 22, 2018, the entire contents of which is incorporated herein for all purposes by this reference.

#The present invention relates to a power transmission apparatus for a vehicle. More particularly, the present invention relates to a power transmission apparatus for a vehicle for realizing multiple shifting stages by adding two planetary gear sets in a dual clutch transmission structure and achieving the vehicle to run in an electric vehicle mode and a parallel hybrid mode by adding one motor/generator.

#An environmentally-friendly technology of a vehicle is a core technology which controls survival of a future vehicle industry, and advanced vehicle makers have focused their energy on the development of an environmentally-friendly vehicle to achieve environmental and fuel efficiency regulations.

Brief description of the drawings2 figures

#FIG. 1 is a schematic view of a power transmission apparatus configured for a vehicle according to an exemplary embodiment of the present invention.

#FIG. 2 is a shifting operation chart for a power transmission apparatus configured for a vehicle according to an exemplary embodiment of the present invention.

Detailed description5,032 words

#It may be understood that the appended drawings are not necessarily to scale, presenting a somewhat simplified representation of various features illustrative of the basic principles of the present invention. The specific design features of the present invention as included herein, including, for example, specific dimensions, orientations, locations, and shapes will be determined in part by the particularly intended application and use environment.

#In the figures, reference numbers refer to the same or equivalent parts of the present invention throughout the several figures of the drawing.

#Reference will now be made in detail to various embodiments of the present invention(s), examples of which are illustrated in the accompanying drawings and described below. While the present invention(s) will be described in conjunction with exemplary embodiments of the present invention, it will be understood that the present description is not intended to limit the present invention(s) to those exemplary embodiments. On the other hand, the present invention(s) is/are intended to cover not only the exemplary embodiments of the present invention, but also various alternatives, modifications, equivalents and other embodiments, which may be included within the spirit and scope of the present invention as defined by the appended claims.

Facts

Application

16/202,548Filed 28 Nov 2018

Priority

KR 10-2018-009811622 Aug 2018

Published

US 2020/0063830 A127 Feb 2020

Granted

7 Jul 2020

Term ends

22 Mar 2039

Estimated · how

20 years from earliest known nonprovisional domestic filing plus recorded patent term adjustment, including 114 days of adjustment. Maintenance-fee lapses, terminal disclaimers and statutory extensions have not been checked. The continuity chain may be incomplete; this is not an enforceability determination.

Classification15 codes

F16H 3/006
Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion: power being selectively transmitted by…
F16H 37/0833
With differential gearing: with arrangements for dividing torque between two or more intermediate shafts, i.e. with two or more internal power paths
B60K 6/365
Characterised by the transmission gearings: with the gears having orbital motion
F16H 3/724
With a secondary drive, e.g. regulating motor, in order to vary speed continuously: using externally powered electric machines

Timeline

22 Aug 2018Priority claimedKR 10-2018-0098116
28 Nov 2018Application filedUS 16/202,548
28 Nov 2018Assigned to Hyundai Motor Company, Kia Motors Corporationassignment of assignor's interest
27 Feb 2020PublishedUS 2020/0063830 A1
7 Jul 2020GrantedUS 10,704,652 B2
12 Oct 2026TodayWithin its term
22 Mar 2039Term endsEstimated, includes 114 days of adjustment