Constant engine torque strategy for an improved catalyst heating phase
US-2024262341-A1 · Aug 8, 2024 · US
Methods and systems for a hybrid vehicle
US9108638B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9108638-B2 |
| Application number | US-201414251060-A |
| Country | US |
| Kind code | B2 |
| Filing date | Apr 11, 2014 |
| Priority date | May 4, 2012 |
| Publication date | Aug 18, 2015 |
| Grant date | Aug 18, 2015 |
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Abstract
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Systems and methods for learning torque estimate errors and updating torque estimation models are presented. In one example, torque errors are learned during an engine shut-down, after a disconnect clutch coupled between an engine and an electric machine has been released. An updated torque estimation model is then used to control torque during subsequent engine operation to improve drive feel and vehicle performance.
First claim
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The invention claimed is: 1. A hybrid vehicle method, comprising: attempting to provide zero torque across a disconnect clutch upon clutch release, the clutch mechanically coupling an engine to an electric machine; via a controller, learning errors in air and fueling required to provide the zero torque based on a speed profile of the engine and/or the electric machine for a duration following the clutch release; and adjusting a subsequent clutch application based on the learne…
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Cross-Sectional Technologies · mapped topic
Operations & Transport · mapped topic
Cross-Sectional Technologies · mapped topic
Operations & Transport · mapped topic
- B60W10/02Primary
Operations & Transport · mapped topic
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Frequently asked questions
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- What does patent US9108638B2 cover?
- Systems and methods for learning torque estimate errors and updating torque estimation models are presented. In one example, torque errors are learned during an engine shut-down, after a disconnect clutch coupled between an engine and an electric machine has been released. An updated torque estimation model is then used to control torque during subsequent engine operation to improve drive feel …
- Who is the assignee on this patent?
- Ford Global Tech Llc
- What technology area does this patent fall under?
- Primary CPC classification B60W10/02. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Tue Aug 18 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).