Method to estimate NO2 concentration in an exhaust gas of an internal combustion engine
A method is provided to estimate NO2 concentration in exhaust gas flowing through an exhaust pipe of an internal combustion engine. The exhaust pipe has a first section and a second section, and is equipped with an aftertreatment device located between the first section and the second section, and t...
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| creator | PETRONZI MARCO ZANETTI IGOR |
| description | A method is provided to estimate NO2 concentration in exhaust gas flowing through an exhaust pipe of an internal combustion engine. The exhaust pipe has a first section and a second section, and is equipped with an aftertreatment device located between the first section and the second section, and the method includes, but is not limited to determining a parameter related to a NO2 concentration of exhaust gas flowing in the first section, determining an oxidization index expressive of a rate of NO contained in the exhaust gas which oxidizes into NO2 inside the aftertreatment device, and a reduction index expressive of a rate of NO2 contained in the exhaust gas which is reduced into NO inside the aftertreatment device, and calculating a parameter related to a NO2 concentration in the second section as a function of the parameter related to a NO2 concentration in the first section and of the oxidization index and of the reduction index of the aftertreatment device. |
| format | Patent |
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The exhaust pipe has a first section and a second section, and is equipped with an aftertreatment device located between the first section and the second section, and the method includes, but is not limited to determining a parameter related to a NO2 concentration of exhaust gas flowing in the first section, determining an oxidization index expressive of a rate of NO contained in the exhaust gas which oxidizes into NO2 inside the aftertreatment device, and a reduction index expressive of a rate of NO2 contained in the exhaust gas which is reduced into NO inside the aftertreatment device, and calculating a parameter related to a NO2 concentration in the second section as a function of the parameter related to a NO2 concentration in the first section and of the oxidization index and of the reduction index of the aftertreatment device.</description><language>eng</language><subject>CALCULATING ; COMPUTING ; COUNTING ; ELECTRIC DIGITAL DATA PROCESSING ; PHYSICS</subject><creationdate>2014</creationdate><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20140325&DB=EPODOC&CC=US&NR=8682595B2$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,780,885,25564,76547</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20140325&DB=EPODOC&CC=US&NR=8682595B2$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>PETRONZI MARCO</creatorcontrib><creatorcontrib>ZANETTI IGOR</creatorcontrib><title>Method to estimate NO2 concentration in an exhaust gas of an internal combustion engine</title><description>A method is provided to estimate NO2 concentration in exhaust gas flowing through an exhaust pipe of an internal combustion engine. The exhaust pipe has a first section and a second section, and is equipped with an aftertreatment device located between the first section and the second section, and the method includes, but is not limited to determining a parameter related to a NO2 concentration of exhaust gas flowing in the first section, determining an oxidization index expressive of a rate of NO contained in the exhaust gas which oxidizes into NO2 inside the aftertreatment device, and a reduction index expressive of a rate of NO2 contained in the exhaust gas which is reduced into NO inside the aftertreatment device, and calculating a parameter related to a NO2 concentration in the second section as a function of the parameter related to a NO2 concentration in the first section and of the oxidization index and of the reduction index of the aftertreatment device.</description><subject>CALCULATING</subject><subject>COMPUTING</subject><subject>COUNTING</subject><subject>ELECTRIC DIGITAL DATA PROCESSING</subject><subject>PHYSICS</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>2014</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNqNzLEKwkAQBNBrLET9h_0Bm5NIbBXFRi1ULMMaJ8lBshtyK_j5XsAPsBqYeczUPU6wRl9kSogWOjbQ-eKpVCkhNrAFFQpCLIRPw-9oVHMkrcYmiGEQbhPvnmkaLaQOgrmbVNxGLH45c3TY33bHJXotEHtO77Difs3Xuc822dav_iBfnqk5SQ</recordid><startdate>20140325</startdate><enddate>20140325</enddate><creator>PETRONZI MARCO</creator><creator>ZANETTI IGOR</creator><scope>EVB</scope></search><sort><creationdate>20140325</creationdate><title>Method to estimate NO2 concentration in an exhaust gas of an internal combustion engine</title><author>PETRONZI MARCO ; ZANETTI IGOR</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_US8682595B23</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng</language><creationdate>2014</creationdate><topic>CALCULATING</topic><topic>COMPUTING</topic><topic>COUNTING</topic><topic>ELECTRIC DIGITAL DATA PROCESSING</topic><topic>PHYSICS</topic><toplevel>online_resources</toplevel><creatorcontrib>PETRONZI MARCO</creatorcontrib><creatorcontrib>ZANETTI IGOR</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>PETRONZI MARCO</au><au>ZANETTI IGOR</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>Method to estimate NO2 concentration in an exhaust gas of an internal combustion engine</title><date>2014-03-25</date><risdate>2014</risdate><abstract>A method is provided to estimate NO2 concentration in exhaust gas flowing through an exhaust pipe of an internal combustion engine. The exhaust pipe has a first section and a second section, and is equipped with an aftertreatment device located between the first section and the second section, and the method includes, but is not limited to determining a parameter related to a NO2 concentration of exhaust gas flowing in the first section, determining an oxidization index expressive of a rate of NO contained in the exhaust gas which oxidizes into NO2 inside the aftertreatment device, and a reduction index expressive of a rate of NO2 contained in the exhaust gas which is reduced into NO inside the aftertreatment device, and calculating a parameter related to a NO2 concentration in the second section as a function of the parameter related to a NO2 concentration in the first section and of the oxidization index and of the reduction index of the aftertreatment device.</abstract><oa>free_for_read</oa></addata></record> |
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| subjects | CALCULATING COMPUTING COUNTING ELECTRIC DIGITAL DATA PROCESSING PHYSICS |
| title | Method to estimate NO2 concentration in an exhaust gas of an internal combustion engine |
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