Multi-speed transmission
US-9217494-B2 · Dec 22, 2015 · US
Vehicle drive device
US8960034B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8960034-B2 |
| Application number | US-201113983990-A |
| Country | US |
| Kind code | B2 |
| Filing date | Mar 23, 2011 |
| Priority date | Mar 23, 2011 |
| Publication date | Feb 24, 2015 |
| Grant date | Feb 24, 2015 |
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- Title
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Abstract
Official abstract text for this publication.
In a vehicle drive device, a response to a range change request, during which the drive wheels are rotated in a low or high range, can be smoothly and quickly completed without using a synchronous engaging mechanism. When the range change is requested when the drive wheels are rotated in the low range or in the high range, the control devices disengage a clutch sleeve from a currently engaged gear piece so as to establish a neutral range, and control an output rotational speed of the motor generator such that a difference between an input rotational speed and an output rotational speed of the transmission mechanism is set to be zero, or be equal to or less than a predetermined value. After that, the control devices cause a connection processor to slide the clutch sleeve to be connected to a connection target gear piece.
First claim
Opening claim text (preview).
The invention claimed is: 1. A vehicle drive device including a transmission mechanism selectively establishing one of a low range and a high range and power-transmissively connecting an output shaft to drive wheels, a range changing mechanism changing the range of the transmission mechanism, a motor generator inputting drive force to the transmission mechanism, and a control device controlling the changing of the range, wherein the range changing mechanism includes: a low gear p…
Assignees
Inventors
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Cross-Sectional Technologies · mapped topic
Operations & Transport · mapped topic
Operations & Transport · mapped topic
- F16H37/042Primary
Mechanical Engineering · mapped topic
Operations & Transport · mapped topic
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Frequently asked questions
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- What does patent US8960034B2 cover?
- In a vehicle drive device, a response to a range change request, during which the drive wheels are rotated in a low or high range, can be smoothly and quickly completed without using a synchronous engaging mechanism. When the range change is requested when the drive wheels are rotated in the low range or in the high range, the control devices disengage a clutch sleeve from a currently engaged g…
- Who is the assignee on this patent?
- Takahashi Akinori, Toyota Motor Co Ltd
- What technology area does this patent fall under?
- Primary CPC classification F16H37/042. Mapped technology areas include Mechanical Engineering.
- When was this patent published?
- Publication date Tue Feb 24 2015 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).