Traction controller and method
US-2021046827-A1 · Feb 18, 2021 · US
Hybrid vehicle
US11260742B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11260742-B2 |
| Application number | US-201816117459-A |
| Country | US |
| Kind code | B2 |
| Filing date | Aug 30, 2018 |
| Priority date | Aug 30, 2018 |
| Publication date | Mar 1, 2022 |
| Grant date | Mar 1, 2022 |
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.
One axle of a hybrid vehicle is powered by an electric motor while a second axle of the vehicle is powered by a powertrain that includes an internal combustion engine. The electrically driven axle can be controlled in a speed control mode or in a torque control mode based on a driver demanded torque. The speed control mode is used when slip is detected at the electrically driven axle. The torque control mode is used when the electrically driven axle has traction. During a transition between these modes, the rate of change of torque is controlled to a predetermined level to mitigate noise, vibration, and harshness.
First claim
Opening claim text (preview).
What is claimed is: 1. A method of controlling a hybrid vehicle comprising: setting a first motor torque via a controller to a first driver demand based on a torque control mode in response to a slip of a first axle being less than a threshold; setting the first motor torque via the controller based on a speed control mode in response to the slip of the first axle exceeding the threshold; transitioning the first motor torque from the torque control mode to the speed control mode at a first predetermined rate via the controller in response to an increase in the slip of the first axle from less than the threshold to greater than the threshold; and transitioning the first motor torque from the speed control mode to the torque control mode via the controller at a second predetermined rate. 2. The method of claim 1 further comprising initiating the transition from the speed control mode to the torque control mode via the controller in response to an absolute value of the first motor torque exceeding an absolute value of the first driver demand. 3. The method of claim 2 further comprising initiating the transition from the speed control mode to the torque control mode via the controller in response to an absolute value of the first driver demand being less than a threshold. 4. The method of claim 1 further comprising setting a powertrain torque to a second axle to a second driver demand based on the torque control mode. 5. The method of claim 4 wherein setting the powertrain torque comprises setting a second motor torque. 6. The method of claim 4 wherein setting the powertrain torque comprises setting an internal combustion engine torque.
Assignees
Inventors
Classifications
Hybrid vehicles · CPC title
Torque change rate · CPC title
Controlling the power contribution of each of the prime movers to meet required power demand · CPC title
- B60W10/119Primary
including control of all-wheel-driveline means, e.g. transfer gears or clutches for dividing torque between front and rear axle (B60W10/14 takes precedence) · CPC title
Engine torque · 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 US11260742B2 cover?
- One axle of a hybrid vehicle is powered by an electric motor while a second axle of the vehicle is powered by a powertrain that includes an internal combustion engine. The electrically driven axle can be controlled in a speed control mode or in a torque control mode based on a driver demanded torque. The speed control mode is used when slip is detected at the electrically driven axle. The torqu…
- Who is the assignee on this patent?
- Ford Global Tech Llc
- What technology area does this patent fall under?
- Primary CPC classification B60W10/119. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Tue Mar 01 2022 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 5 related publications on this page (citations in our corpus or others sharing the same primary CPC).