Method for the correction of a fuel quantity injected by means of a fuel injection device during operation of an internal combustion engine
US-2015377167-A1 · Dec 31, 2015 · US
System and method for monitoring a particulate filter in a vehicle exhaust aftertreatment device
US9303579B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9303579-B2 |
| Application number | US-201213563848-A |
| Country | US |
| Kind code | B2 |
| Filing date | Aug 1, 2012 |
| Priority date | Aug 1, 2012 |
| Publication date | Apr 5, 2016 |
| Grant date | Apr 5, 2016 |
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Abstract
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A method of monitoring a particulate filter of an exhaust aftertreatment device includes sensing a first pressure drop across the particulate filter at a first instant in time, and sensing a second pressure drop across the particulate filter at a second instant in time. A controller may then calculate a rate-of-change of the pressure drop between the first instant in time and the second instant in time while sensing a flow rate of an exhaust gas flowing through the exhaust aftertreatment device. Using the sensed exhaust flow rate, the controller may determine a rate-of-change threshold, and subsequently compare the calculated rate-of-change to the rate-of-change threshold. The method further includes updating a soot model using the sensed second pressure drop if the calculated rate-of-change is less than the rate-of-change threshold.
First claim
Opening claim text (preview).
The invention claimed is: 1. A method of regenerating a particulate filter of an exhaust aftertreatment device comprising: sensing a first pressure drop across the particulate filter at a first instant in time via a pressure sensor; sensing a second pressure drop across the particulate filter at a second instant in time via the pressure sensor, wherein the first instant in time and the second instant in time are from 0.5 to 60 seconds apart; calculating a rate-of-change of the…
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Mechanical Engineering · mapped topic
Mechanical Engineering · mapped topic
Mechanical Engineering · mapped topic
Mechanical Engineering · mapped topic
- F02D41/1445Primary
Mechanical Engineering · mapped topic
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- What does patent US9303579B2 cover?
- A method of monitoring a particulate filter of an exhaust aftertreatment device includes sensing a first pressure drop across the particulate filter at a first instant in time, and sensing a second pressure drop across the particulate filter at a second instant in time. A controller may then calculate a rate-of-change of the pressure drop between the first instant in time and the second instant…
- Who is the assignee on this patent?
- Swoish Christopher C, Whitt Christopher, Sarsen Douglas Christopher, and 1 more
- What technology area does this patent fall under?
- Primary CPC classification F02D41/1445. Mapped technology areas include Mechanical Engineering.
- When was this patent published?
- Publication date Tue Apr 05 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).