Vehicle control device
US-2015367842-A1 · Dec 24, 2015 · US
Method for operating a vehicle powertrain
US9434386B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9434386-B2 |
| Application number | US-201514603237-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jan 22, 2015 |
| Priority date | Mar 6, 2012 |
| Publication date | Sep 6, 2016 |
| Grant date | Sep 6, 2016 |
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- Title
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- Abstract
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Abstract
Official abstract text for this publication.
Methods and systems for controlling a vehicle powertrain that may be automatically stopped and started are presented. In one example, a method adjusts a position of a transmission clutch in response to battery current during engine cranking. The method may reduce clutch wear and improve vehicle launch from a stop.
First claim
Opening claim text (preview).
The invention claimed is: 1. A method for operating a vehicle powertrain, comprising: adjusting a transmission clutch position in response to a battery current during engine cranking while starting an engine and in response to battery voltage and ambient temperature. 2. The method of claim 1 , where a transmission clutch mechanically couples an output of an engine to a layshaft of a transmission. 3. The method of claim 2 , where the transmission clutch is at least partially engaged and transfers torque from the engine to the layshaft. 4. The method of claim 2 , where the transmission clutch is an electrically actuated clutch. 5. The method of claim 1 , where battery current is determined via a shunt resistor. 6. The method of claim 1 , where adjusting the transmission clutch position is in response to the battery current after the engine reaches cranking speed and not in response to battery current before the engine reaches cranking speed during engine cranking.
Assignees
Inventors
Classifications
Ambient conditions, e.g. wind or rain · CPC title
Clutch systems with a plurality of fluid-actuated clutches (arrangements or mounting of clutches in vehicles B60K17/00) · CPC title
Temperature · CPC title
Actuation by rocker lever; Rocker levers therefor · CPC title
Charge state · CPC title
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Frequently asked questions
Answers are generated from the same data shown on this page.
- What does patent US9434386B2 cover?
- Methods and systems for controlling a vehicle powertrain that may be automatically stopped and started are presented. In one example, a method adjusts a position of a transmission clutch in response to battery current during engine cranking. The method may reduce clutch wear and improve vehicle launch from a stop.
- Who is the assignee on this patent?
- Ford Global Tech Llc
- What technology area does this patent fall under?
- Primary CPC classification B60W30/192. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Tue Sep 06 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).