Control apparatus for internal combustion engine
US-2015377164-A1 · Dec 31, 2015 · US
Control device for vehicle
US9505399B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9505399-B2 |
| Application number | US-201314431845-A |
| Country | US |
| Kind code | B2 |
| Filing date | Nov 27, 2013 |
| Priority date | Dec 4, 2012 |
| Publication date | Nov 29, 2016 |
| Grant date | Nov 29, 2016 |
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.
A vehicle having mounted thereon a differential device including a sun gear, a ring gear and a carrier, a first motor generator coupled to the sun gear, a second motor generator coupled to the ring gear, an automatic transmission provided between the ring gear and a drive wheel, an engine coupled to the carrier, and a brake suppressing the rotation of the carrier. The vehicle has a traveling mode that is selected from a first mode in which traveling is performed by using a torque outputted from the first and second motor generators in a state where the brake is engaged, and a second mode in which the traveling is performed by operating the engine in a state where the brake is disengaged.
First claim
Opening claim text (preview).
The invention claimed is: 1. A control device for a vehicle on which a differential device including a first rotary element, a second rotary element, and a third rotary element, a first electric motor coupled to the first rotary element, a second electric motor coupled to the second rotary element, a transmission provided between the second rotary element and a drive wheel, an engine coupled to the third rotary element, and an engagement element suppressing rotation of the third rotary element are mounted, the control device comprising: an electronic control unit configured to switch a traveling mode of the vehicle from a first mode in which the vehicle travels by using a torque outputted from the first electric motor and a torque outputted from the second electric motor in a state where the engagement element is engaged, to a second mode in which the vehicle travels by operating the engine in a state where the engagement element is disengaged, the electronic control unit being configured to switch the traveling mode to the second mode after downshifting the transmission, wherein the electronic control unit is configured to switch the traveling mode to the second mode without downshifting the transmission when a target drive torque of the vehicle is achievable only with the torque outputted from the second electric motor. 2. The control device according to claim 1 , wherein the electronic control unit is configured to reduce the torque outputted from the first electric motor during the downshift. 3. The control device according to claim 1 , wherein the electronic control unit is configured to maintain an engagement force of the engagement element constant during the downshift. 4. The control device according to claim 1 , wherein the electronic control unit is configured to start the engine after the downshift is completed. 5. The control device according to claim 1 , wherein the electronic control unit is configured to keep a speed ratio of the transmission unchanged while the engagement element is switched from the state where the engagement element is engaged to the state where the engagement element is disengaged. 6. The control device according to claim 1 , wherein the electronic control unit is configured to upshift the transmission after switching the traveling mode to the second mode. 7. The control device according to claim 1 , wherein the electronic control unit is configured to switch the traveling mode to the second mode after downshifting the transmission when a target drive torque of the vehicle cannot be achieved only with the torque outputted from the second electric motor.
Assignees
Inventors
Classifications
Control strategies involving selection of transmission gear ratio {(control of change speed gearings, together with other vehicle sub-units B60W10/10; HEV transmission gearing B60K6/36; gearings and control thereof F16H)} · CPC title
Output torque · CPC title
- B60K6/445Primary
Differential gearing distribution type · CPC title
characterized by driveline brakes · CPC title
Control systems specially adapted for hybrid vehicles {(hybrid vehicle design, B60K6/00; electric vehicles B60L)} · 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 US9505399B2 cover?
- A vehicle having mounted thereon a differential device including a sun gear, a ring gear and a carrier, a first motor generator coupled to the sun gear, a second motor generator coupled to the ring gear, an automatic transmission provided between the ring gear and a drive wheel, an engine coupled to the carrier, and a brake suppressing the rotation of the carrier. The vehicle has a traveling mo…
- Who is the assignee on this patent?
- Imamura Tatsuya, Matsubara Tooru, Kumazaki Kenta, and 4 more
- What technology area does this patent fall under?
- Primary CPC classification B60K6/445. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Tue Nov 29 2016 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 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).