Hybrid vehicle
US-2018149103-A1 · May 31, 2018 · US
Methods and system for automatically stopping an engine
US10746150B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10746150-B2 |
| Application number | US-201816226408-A |
| Country | US |
| Kind code | B2 |
| Filing date | Dec 19, 2018 |
| Priority date | Dec 19, 2018 |
| Publication date | Aug 18, 2020 |
| Grant date | Aug 18, 2020 |
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- Title
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Abstract
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Systems and methods for operating a spark ignition engine that includes a particulate filter in the engine's exhaust system are described. In one example, a threshold temperature at which the spark ignition engine may be automatically stopped is adjusted according to an amount of soot that is stored in the particulate filter.
First claim
Opening claim text (preview).
The invention claimed is: 1. An engine operating method, comprising: automatically stopping an engine only when a temperature of the engine is greater than a first temperature before regeneration of a particulate filter; and automatically stopping the engine only when the temperature of the engine is greater than a second temperature after regeneration of the particulate filter, the second temperature greater than the first temperature. 2. The method of claim 1 , further comprising regenerating the particulate filter in response to an amount of soot stored in the particulate filter exceeding a threshold level. 3. The method of claim 1 , further comprising automatically restarting the engine in response to a driver demand torque greater than a threshold. 4. The method of claim 1 , further comprising estimating an amount of soot stored in the particulate filter. 5. The method of claim 1 , further comprising adjusting a temperature threshold that is compared against the temperature of the engine. 6. The method of claim 5 , where adjusting the temperature includes increasing the temperature as an amount of soot stored in the particulate filter decreases. 7. The method of claim 5 , where adjusting the temperature includes decreasing the temperature as an amount of soot stored in the particulate filter increases.
Assignees
Inventors
Classifications
Engine management systems · CPC title
Particle filter loading or soot amount · CPC title
Temperature of exhaust gas apparatus · CPC title
said parameters being related to the engine · CPC title
using means for regenerating the filters, e.g. by burning trapped particles · CPC title
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Frequently asked questions
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- What does patent US10746150B2 cover?
- Systems and methods for operating a spark ignition engine that includes a particulate filter in the engine's exhaust system are described. In one example, a threshold temperature at which the spark ignition engine may be automatically stopped is adjusted according to an amount of soot that is stored in the particulate filter.
- Who is the assignee on this patent?
- Ford Global Tech Llc
- What technology area does this patent fall under?
- Primary CPC classification F02N11/0829. Mapped technology areas include Mechanical Engineering.
- When was this patent published?
- Publication date Tue Aug 18 2020 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 6 related publications on this page (citations in our corpus or others sharing the same primary CPC).