Regenerative-braking transmission downshift torque limiting
US-2015360691-A1 · Dec 17, 2015 · US
Hybrid electric vehicle and method for controlling a powertrain therein
US9738271B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9738271-B2 |
| Application number | US-201514919319-A |
| Country | US |
| Kind code | B2 |
| Filing date | Oct 21, 2015 |
| Priority date | May 15, 2009 |
| Publication date | Aug 22, 2017 |
| Grant date | Aug 22, 2017 |
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- Title
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Abstract
Official abstract text for this publication.
A method for controlling a hybrid electric powertrain includes, in response to a request to increase a powertrain braking force on at least one of a plurality of traction wheels, (i) commanding at least one clutch to increase a gear ratio of a transmission, and (ii) during clutch stroke, commanding an electric machine to act as a generator such that the electric machine applies a braking force to at least one of the traction wheels.
First claim
Opening claim text (preview).
What is claimed: 1. A method comprising: in response to a request to increase braking force, by a controller commanding an electric machine to act as a generator to apply the braking force until a battery state of charge achieves a threshold, and commanding a transmission gear ratio increase responsive to the state of charge achieving the threshold. 2. The method of claim 1 further comprising commanding the electric machine to act as a motor responsive to a transmission speed ratio achieving a target to apply a propulsion force. 3. A vehicle comprising: an electric machine; and a controller configured to, in response to a request to increase braking force, command an electric machine to act as a generator to apply the braking force until a battery state of charge achieves a threshold, and command a transmission gear ratio increase responsive to the state of charge achieving the threshold. 4. The vehicle of claim 3 , wherein the controller is further programmed to command the electric machine to act as a motor responsive to a transmission speed ratio achieving a target to apply a propulsion force.
Assignees
Inventors
Classifications
Regenerative braking · CPC title
Motor-assist type · CPC title
Motor or generator · CPC title
Control systems specially adapted for hybrid vehicles {(hybrid vehicle design, B60K6/00; electric vehicles B60L)} · CPC title
Braking system · CPC title
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- What does patent US9738271B2 cover?
- A method for controlling a hybrid electric powertrain includes, in response to a request to increase a powertrain braking force on at least one of a plurality of traction wheels, (i) commanding at least one clutch to increase a gear ratio of a transmission, and (ii) during clutch stroke, commanding an electric machine to act as a generator such that the electric machine applies a braking force …
- Who is the assignee on this patent?
- Ford Global Tech Llc
- What technology area does this patent fall under?
- Primary CPC classification B60W20/30. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Tue Aug 22 2017 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).