Engine device
US-9222381-B2 · Dec 29, 2015 · US
Exhaust gas purification apparatus for engine
US8936760B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8936760-B2 |
| Application number | US-201113519375-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jan 26, 2011 |
| Priority date | Feb 3, 2010 |
| Publication date | Jan 20, 2015 |
| Grant date | Jan 20, 2015 |
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Abstract
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An exhaust gas purification apparatus is provided with: a first soot-accumulation calculation unit 49 which calculates a first soot accumulation amount from an operation state of the engine; a second soot-accumulation calculation unit 51 which calculates a second soot accumulation amount from a total operation time of the engine, a total fuel consumption rate, a pressure difference between front and back of the particulate filter, and the like; a first soot-accumulation correction unit 55 which corrects the first soot accumulation amount calculated by the first soot-accumulation calculation unit 49 to a value greater than the first soot-accumulation amount when the active regeneration starts based on the second soot accumulation amount calculated by the second soot-accumulation calculation unit 51 ; and a regeneration ending unit 57 which ends the active regeneration when, in such a case that the active regeneration starts based on the corrected soot accumulation amount, the first soot accumulation amount becomes less than a threshold value of ending the regeneration.
First claim
Opening claim text (preview).
The invention claimed is: 1. An exhaust gas purification apparatus comprising: a pre-oxidation catalyst configured to burn an unburned constituent contained in exhaust gas of an engine by catalysis; a particulate filter arranged downstream of the pre-oxidization catalyst to collect soot contained in the exhaust gas; a heating device configured to increase an amount of the unburned constituent to be supplied to the pre-oxidation catalyst to perform an active regeneration of the…
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Operations & Transport · mapped topic
- F01N3/02Primary
Mechanical Engineering · mapped topic
Mechanical Engineering · mapped topic
Cross-Sectional Technologies · mapped topic
Mechanical Engineering · mapped topic
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Frequently asked questions
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- What does patent US8936760B2 cover?
- An exhaust gas purification apparatus is provided with: a first soot-accumulation calculation unit 49 which calculates a first soot accumulation amount from an operation state of the engine; a second soot-accumulation calculation unit 51 which calculates a second soot accumulation amount from a total operation time of the engine, a total fuel consumption rate, a pressure difference between …
- Who is the assignee on this patent?
- Takayanagi Ko, Mitsubishi Heavy Ind Ltd
- What technology area does this patent fall under?
- Primary CPC classification F01N3/02. Mapped technology areas include Mechanical Engineering.
- When was this patent published?
- Publication date Tue Jan 20 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).