Exhaust purification system of internal combustion engine
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
May 15, 2018
Issued Date -
N/A
app pub date -
Apr 9, 2013
filing date -
Apr 9, 2013
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
In an internal combustion engine, an exhaust purification catalyst, hydrocarbon feed valve, and particulate filter are arranged in an exhaust passage. Hydrocarbons are injected from the hydrocarbon feed valve by a predetermined period so as to remove NOX which is contained in the exhaust gas in first NOX removal method. While doing this, the particulate matter which is trapped on the particulate filter is removed by raising the temperature of the particulate filter in temperature elevation control. At this time, the hydrocarbon injection for the first NOX removal method is performed by the predetermined period at the preset injection pressure. During the time period when the hydrocarbon injection for the first NOX removal method is not being performed, the hydrocarbon injection for the temperature elevation control is performed by an injection pressure which is set lower than the preset injection pressure.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Advertisement
Advertisement
Advertisement
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully