Control device for internal combustion engine (as amended)
US-2015369155-A1 · Dec 24, 2015 · US
Exhaust purification system for internal combustion engine
US9784155B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9784155-B2 |
| Application number | US-201314782775-A |
| Country | US |
| Kind code | B2 |
| Filing date | Apr 9, 2013 |
| Priority date | Apr 9, 2013 |
| Publication date | Oct 10, 2017 |
| Grant date | Oct 10, 2017 |
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Abstract
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In an internal combustion engine, an exhaust purification catalyst ( 13 ), hydrocarbon feed valve ( 15 ) and particulate filter ( 14 ) are arranged in an exhaust passage. If temperature increasing control should be performed when a first NO X purification method is performed, injection of hydrocarbons for the first NO X purification method is performed with a predetermined period and injection of hydrocarbons for temperature increasing control is performed in a time period when injection of hydrocarbons for the first NO X purification method is not performed, the first NO X purification method being configured to purify NO X which is contained in the exhaust gas by injecting hydrocarbons from the hydrocarbon feed valve with the predetermined period, the temperature increasing control being configured to increase a temperature of the particulate filter to remove particulate matters trapped on the particulate filter. An amount of injection of hydrocarbons for temperature increasing control when an actual temperature of the particulate filter is low is set larger than that when the actual temperature of the particulate filter is high.
First claim
Opening claim text (preview).
The invention claimed is: 1. An exhaust purification system for an internal combustion engine, comprising: an exhaust purification catalyst arranged in an engine exhaust passage; a hydrocarbon feed valve arranged upstream of the exhaust purification catalyst in the engine exhaust passage; a precious metal catalyst carried on an exhaust gas flow surface of the exhaust purification catalyst; basic exhaust gas flow surface parts formed around the precious metal catalyst, wher…
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Mechanical Engineering · mapped topic
Mechanical Engineering · mapped topic
- F01N3/0253Primary
Mechanical Engineering · mapped topic
Mechanical Engineering · mapped topic
Mechanical Engineering · mapped topic
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Frequently asked questions
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- What does patent US9784155B2 cover?
- In an internal combustion engine, an exhaust purification catalyst ( 13 ), hydrocarbon feed valve ( 15 ) and particulate filter ( 14 ) are arranged in an exhaust passage. If temperature increasing control should be performed when a first NO X purification method is performed, injection of hydrocarbons for the first NO X purification method is performed with a predetermined period and injectio…
- Who is the assignee on this patent?
- Yoshida Kohei, Yazawa Yoshiteru, Toyota Motor Co Ltd
- What technology area does this patent fall under?
- Primary CPC classification F01N3/0253. Mapped technology areas include Mechanical Engineering.
- When was this patent published?
- Publication date Tue Oct 10 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).