Transmission system of hybrid electric vehicle
US-2016061305-A1 · Mar 3, 2016 · US
Power transmission system of hybrid electric vehicle
US9969255B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9969255-B2 |
| Application number | US-201615267897-A |
| Country | US |
| Kind code | B2 |
| Filing date | Sep 16, 2016 |
| Priority date | Apr 26, 2016 |
| Publication date | May 15, 2018 |
| Grant date | May 15, 2018 |
How to read this patent
A practical reading order for non-experts. Skip the full description unless you need deep technical detail.
- Title
What the patent document calls the invention.
- Abstract
A short plain-language summary of the technical disclosure.
- Assignees and inventors
Who owns or filed the patent and who is credited as inventor.
- Key dates
Filing, priority, publication, and grant dates set the timeline.
- First independent claim
The legal scope of protection — read this for what is actually claimed.
- CPC / IPC classifications
Technology tags used to group this patent with similar filings.
- Citations and related patents
Prior art links and similar publications in this corpus.
Abstract
Official abstract text for this publication.
The present disclosure provides a power transmission apparatus for a hybrid vehicle including a one-directional rotation limiting device disposed on an engine torque delivery path so as to prevent a torque from reversely transmitting from the final drive gear to the planetary gear set.
First claim
Opening claim text (preview).
What is claimed is: 1. A power transmission apparatus for a hybrid vehicle including an engine as a primary power source and first and second motor/generators as secondary power sources, the power transmission apparatus comprising: a planetary gear set as an engine torque branching device arranged between the first motor/generator and the second motor/generator such that a torque of the engine and a torque of the second motor/generator are delivered to a final drive gear through separate and respective paths of an engine torque delivery path and a motor torque delivery path, the engine torque delivery path being a path from the planetary gear set to the final drive gear through an engine output shaft, the motor torque delivery path being a path from the second motor/generator to the final drive gear through a motor output shaft; and a one-directional rotation limiting device disposed on the engine torque delivery path so as to prevent a torque from reversely transmitting from the final drive gear to the planetary gear set, wherein the one-directional rotation limiting device is disposed between the planetary gear set and the final drive gear in the engine torque delivery path, such that a torque is one-directionally delivered from the planetary gear to the final drive gear. 2. The power transmission apparatus of claim 1 , wherein the one-directional rotation limiting device comprises a one-way clutch disposed on the engine torque delivery path. 3. The power transmission apparatus of claim 2 , wherein: an engine output gear is integrally formed with the engine output shaft and externally gear-meshed with a power delivery shaft gear of a power delivery shaft connected with the planetary gear set; an intermediate power delivery gear is rotatably disposed on the engine output shaft and externally gear-meshed with the final drive gear; and the one-way clutch is interposed between the intermediate power delivery gear and the engine output shaft. 4. The power transmission apparatus of claim 2 , wherein: an engine output gear is integrally formed with the engine output shaft and externally gear-meshed with the final drive gear; an intermediate power delivery gear is rotatably disposed on the engine output shaft and externally gear-meshed with a power delivery shaft gear of a power delivery shaft connected with the planetary gear set; and the one-way clutch is interposed between the intermediate power delivery gear and the engine output shaft. 5. The power transmission apparatus of claim 2 , wherein: the one-directional rotation limiting device is disposed on a power delivery shaft connected with the planetary gear set; and an engine output gear of the engine output shaft is externally gear-meshed with an intermediate power delivery gear and the final drive gear. 6. The power transmission apparatus of claim 1 , wherein: a motor output shaft input gear and a motor output shaft output gear are integrally formed at respective ends of the motor output shaft; the motor output shaft input gear is externally gear-meshed with a motor shaft gear integrally formed at a second motor shaft of the second motor/generator; and the motor output shaft output gear is externally gear-meshed with the final drive gear.
Assignees
Inventors
Classifications
Planetary gearings · CPC title
Gearings having only two central gears, connected by orbital gears (F16H3/68 - F16H3/78 take precedence) · CPC title
Hybrid vehicles · CPC title
Orbital, e.g. planetary gears · CPC title
Differential gearing distribution type · CPC title
Patent family
Related publications grouped by family.
External sources
Frequently asked questions
Answers are generated from the same data shown on this page.
- What does patent US9969255B2 cover?
- The present disclosure provides a power transmission apparatus for a hybrid vehicle including a one-directional rotation limiting device disposed on an engine torque delivery path so as to prevent a torque from reversely transmitting from the final drive gear to the planetary gear set.
- Who is the assignee on this patent?
- Hyundai Motor Co Ltd
- What technology area does this patent fall under?
- Primary CPC classification B60K6/365. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Tue May 15 2018 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 3 related publications on this page (citations in our corpus or others sharing the same primary CPC).