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System and method for diagnosing faults in an oxygen sensor
US8939010B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8939010-B2 |
| Application number | US-201113286717-A |
| Country | US |
| Kind code | B2 |
| Filing date | Nov 1, 2011 |
| Priority date | Nov 1, 2011 |
| Publication date | Jan 27, 2015 |
| Grant date | Jan 27, 2015 |
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Abstract
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A system according to the principles of the present disclosure includes an error period module and a sensor diagnostic module. The error period module determines an error period based on an amount of time that a first air/fuel ratio and a desired air/fuel ratio are different. A first oxygen sensor generates a first signal indicating the first air/fuel ratio. The sensor diagnostic module diagnoses a fault in the first oxygen sensor when the error period is greater than a predetermined period.
First claim
Opening claim text (preview).
What is claimed is: 1. A system comprising: an error period module that determines an error period based on an amount of time that a first air/fuel ratio and a desired air/fuel ratio are different and independent of whether the desired air/fuel ratio is changed, wherein a first oxygen sensor generates a first signal indicating the first air/fuel ratio; and a sensor diagnostic module that diagnoses a fault in the first oxygen sensor when the error period is greater than a predete…
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- F02D41/1454Primary
Mechanical Engineering · mapped topic
Mechanical Engineering · mapped topic
Mechanical Engineering · mapped topic
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- What does patent US8939010B2 cover?
- A system according to the principles of the present disclosure includes an error period module and a sensor diagnostic module. The error period module determines an error period based on an amount of time that a first air/fuel ratio and a desired air/fuel ratio are different. A first oxygen sensor generates a first signal indicating the first air/fuel ratio. The sensor diagnostic module diagnos…
- Who is the assignee on this patent?
- Levijoki Stephen Paul, Majcher Thomas J, Siekkinen John W, and 3 more
- What technology area does this patent fall under?
- Primary CPC classification F02D41/1454. Mapped technology areas include Mechanical Engineering.
- When was this patent published?
- Publication date Tue Jan 27 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).