METHOD OF ESTIMATING ENGINE-OUT NOx MASS FLOW RATE
US-2015354428-A1 · Dec 10, 2015 · US
Humidity sensor diagnostics
US9482172B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9482172-B2 |
| Application number | US-201313774282-A |
| Country | US |
| Kind code | B2 |
| Filing date | Feb 22, 2013 |
| Priority date | Feb 22, 2013 |
| Publication date | Nov 1, 2016 |
| Grant date | Nov 1, 2016 |
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Abstract
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Embodiments for diagnosing a humidity sensor are provided. One example method comprises adjusting an engine operating parameter based on humidity of a first gas flow measured by a humidity sensor, and indicating degradation of the humidity sensor if a humidity of a second gas flow measured by the humidity sensor is different than an expected humidity. In this way, degradation of the humidity sensor may be indicated if the humidity of the second gas flow measured by the humidity sensor is different than expected.
First claim
Opening claim text (preview).
The invention claimed is: 1. A method, comprising: adjusting an engine operating parameter based on humidity of a first gas flow measured by a humidity sensor; and indicating degradation of the humidity sensor if a humidity of a second, different, gas flow measured by the humidity sensor does not change by an expected amount from the humidity measured of the first gas flow, the second gas flow determined to have a known different humidity from the first gas flow, wherein the f…
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Mechanical Engineering · mapped topic
Physics · mapped topic
- F02D41/222Primary
Mechanical Engineering · mapped topic
Mechanical Engineering · mapped topic
Mechanical Engineering · mapped topic
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- What does patent US9482172B2 cover?
- Embodiments for diagnosing a humidity sensor are provided. One example method comprises adjusting an engine operating parameter based on humidity of a first gas flow measured by a humidity sensor, and indicating degradation of the humidity sensor if a humidity of a second gas flow measured by the humidity sensor is different than an expected humidity. In this way, degradation of the humidity se…
- Who is the assignee on this patent?
- Ford Global Tech Llc
- What technology area does this patent fall under?
- Primary CPC classification F02D41/222. Mapped technology areas include Mechanical Engineering.
- When was this patent published?
- Publication date Tue Nov 01 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).