Method for restarting an engine
US-9222453-B2 · Dec 29, 2015 · US
Diagnosis system of internal combustion engine
US9850840B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9850840-B2 |
| Application number | US-201314900792-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jun 26, 2013 |
| Priority date | Jun 26, 2013 |
| Publication date | Dec 26, 2017 |
| Grant date | Dec 26, 2017 |
How to read this patent
A practical reading order for non-experts. Skip the full description unless you need deep technical detail.
- Title
What the patent document calls the invention.
- Abstract
A short plain-language summary of the technical disclosure.
- Assignees and inventors
Who owns or filed the patent and who is credited as inventor.
- Key dates
Filing, priority, publication, and grant dates set the timeline.
- First independent claim
The legal scope of protection — read this for what is actually claimed.
- CPC / IPC classifications
Technology tags used to group this patent with similar filings.
- Citations and related patents
Prior art links and similar publications in this corpus.
Abstract
Official abstract text for this publication.
An electronic control unit (ECU) of an internal combustion engine, which includes an air-fuel ratio sensor arranged at a downstream side of an exhaust purification catalyst, is configured to judge if a state of the air-fuel ratio sensor is normal or abnormal based on the first characteristic of change of air-fuel ratio and, if a judgment cannot be made based on the first characteristic, the ECU is configured to judge if the state of the air-fuel ratio sensor is normal or abnormal based on a second characteristic of change of air-fuel ratio. As a result, it is possible to suppress the effects of the change of state of the exhaust purification catalyst while accurately diagnosing the abnormality of deterioration of response of a downstream side air-fuel ratio sensor.
First claim
Opening claim text (preview).
The invention claimed is: 1. An electronic control unit (ECU) of an internal combustion engine comprising an exhaust purification catalyst arranged in an exhaust passage of the internal combustion engine and being able to store oxygen in inflowing exhaust gas and an air-fuel ratio sensor arranged at a downstream side of the exhaust purification catalyst in a direction of exhaust flow and detecting an air-fuel ratio of exhaust gas flowing out from the exhaust purification catalyst,…
Assignees
Inventors
Classifications
Mechanical Engineering · mapped topic
- F02D41/126Primary
Mechanical Engineering · mapped topic
- F02D41/1495Primary
Mechanical Engineering · mapped topic
Mechanical Engineering · mapped topic
Mechanical Engineering · mapped topic
Patent family
Related publications grouped by family.
External sources
Next steps
Free tools are coming soon. Tell us what you want to track and we'll notify you.
Frequently asked questions
Answers are generated from the same data shown on this page.
- What does patent US9850840B2 cover?
- An electronic control unit (ECU) of an internal combustion engine, which includes an air-fuel ratio sensor arranged at a downstream side of an exhaust purification catalyst, is configured to judge if a state of the air-fuel ratio sensor is normal or abnormal based on the first characteristic of change of air-fuel ratio and, if a judgment cannot be made based on the first characteristic, the ECU…
- Who is the assignee on this patent?
- Miyamoto Hiroshi, Miyoshi Yuji, Iwazaki Yasushi, and 3 more
- What technology area does this patent fall under?
- Primary CPC classification F02D41/126. Mapped technology areas include Mechanical Engineering.
- When was this patent published?
- Publication date Tue Dec 26 2017 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).