Injection device for metering a liquid additive, method for freezing an injection device and motor vehicle
US-9222386-B2 · Dec 29, 2015 · US
Exhaust purification device for internal combustion engine
US9856809B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9856809-B2 |
| Application number | US-201314784236-A |
| Country | US |
| Kind code | B2 |
| Filing date | Apr 30, 2013 |
| Priority date | Apr 30, 2013 |
| Publication date | Jan 2, 2018 |
| Grant date | Jan 2, 2018 |
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.
In an internal combustion engine, an exhaust purification catalyst and a hydrocarbon feed valve are arranged in an exhaust passage. When a temperature of the exhaust purification catalyst falls in a first catalyst temperature region (I), a first NO X purification method is performed, while when a temperature of the exhaust purification catalyst falls in a second catalyst temperature region (II), a second NO X purification method is performed. When the temperature of the exhaust purification catalyst falls in a region (IIP) in the second catalyst temperature region close to the first catalyst temperature region, the temperature of the exhaust purification catalyst is made to increase to shift the region in which the temperature of the exhaust purification catalyst falls to the first catalyst temperature region to thereby switch the NO X purification method used from the second NO X purification method to the first NO X purification method.
First claim
Opening claim text (preview).
The invention claimed is: 1. An exhaust purification system for an internal combustion engine, the exhaust purification system comprising: an engine exhaust passage; an exhaust purification catalyst arranged in the engine exhaust passage; a hydrocarbon feed valve arranged upstream of the exhaust purification catalyst in the engine exhaust passage; a precious metal catalyst that is carried on an exhaust gas flow surface of the exhaust purification catalyst and basic exhaust g…
Assignees
Inventors
Classifications
- F01N3/36Primary
Mechanical Engineering · mapped topic
Cross-Sectional Technologies · mapped topic
- F02D41/0245Primary
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 US9856809B2 cover?
- In an internal combustion engine, an exhaust purification catalyst and a hydrocarbon feed valve are arranged in an exhaust passage. When a temperature of the exhaust purification catalyst falls in a first catalyst temperature region (I), a first NO X purification method is performed, while when a temperature of the exhaust purification catalyst falls in a second catalyst temperature region (II…
- Who is the assignee on this patent?
- Nogi Yoshito, Nozaki Yusuke, Haba Yuki, and 1 more
- What technology area does this patent fall under?
- Primary CPC classification F01N3/36. Mapped technology areas include Mechanical Engineering.
- When was this patent published?
- Publication date Tue Jan 02 2018 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).