SYSTEM AND METHOD FOR CONTROLLING THE EMISSIONS OF A SPARK-IGNITION INTERNAL COMBUSTION ENGINE OF A MOTOR-VEHICLE
A system for controlling the emissions of a spark-ignition internal combustion engine of a motor-vehicle comprises first and second exhaust gas treatment devices (12, 13) and a secondary air feeding system (14; 20) for feeding secondary air into the exhaust gas conduit (11), between the first and se...
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| creator | BEDOGNI, Mr. Fabio PIVETTI, Mr. Gianluca MUSU, Mr. Ettore |
| description | A system for controlling the emissions of a spark-ignition internal combustion engine of a motor-vehicle comprises first and second exhaust gas treatment devices (12, 13) and a secondary air feeding system (14; 20) for feeding secondary air into the exhaust gas conduit (11), between the first and second exhaust gas treatment devices (12, 13). The secondary air feeding system (14; 20) is activated only when the load of the engine is greater than a predetermined load value and/or when the engine rotational speed is greater than a predetermined speed value. In this condition the air/fuel ratio of the engine is kept at a value lower than the stoichiometric value, so as to feed the engine with a rich mixture. In one example an electronic controller (E) is programmed for controlling the activation of the secondary air feeding system on the basis of a map, as a function of values of the engine load and the engine rotational speed. The map is predetermined depending upon the specific characteristics of the engine. |
| format | Patent |
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The secondary air feeding system (14; 20) is activated only when the load of the engine is greater than a predetermined load value and/or when the engine rotational speed is greater than a predetermined speed value. In this condition the air/fuel ratio of the engine is kept at a value lower than the stoichiometric value, so as to feed the engine with a rich mixture. In one example an electronic controller (E) is programmed for controlling the activation of the secondary air feeding system on the basis of a map, as a function of values of the engine load and the engine rotational speed. The map is predetermined depending upon the specific characteristics of the engine.</description><language>eng ; fre ; ger</language><subject>BLASTING ; COMBUSTION ENGINES ; CONTROLLING COMBUSTION ENGINES ; ENGINE PLANTS IN GENERAL ; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNALCOMBUSTION ENGINES ; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES ORENGINES IN GENERAL ; HEATING ; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS ; LIGHTING ; MACHINES OR ENGINES IN GENERAL ; MECHANICAL ENGINEERING ; STEAM ENGINES ; WEAPONS</subject><creationdate>2020</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=20200819&DB=EPODOC&CC=EP&NR=3696394A1$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,309,781,886,25568,76551</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20200819&DB=EPODOC&CC=EP&NR=3696394A1$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>BEDOGNI, Mr. Fabio</creatorcontrib><creatorcontrib>PIVETTI, Mr. Gianluca</creatorcontrib><creatorcontrib>MUSU, Mr. Ettore</creatorcontrib><title>SYSTEM AND METHOD FOR CONTROLLING THE EMISSIONS OF A SPARK-IGNITION INTERNAL COMBUSTION ENGINE OF A MOTOR-VEHICLE</title><description>A system for controlling the emissions of a spark-ignition internal combustion engine of a motor-vehicle comprises first and second exhaust gas treatment devices (12, 13) and a secondary air feeding system (14; 20) for feeding secondary air into the exhaust gas conduit (11), between the first and second exhaust gas treatment devices (12, 13). The secondary air feeding system (14; 20) is activated only when the load of the engine is greater than a predetermined load value and/or when the engine rotational speed is greater than a predetermined speed value. In this condition the air/fuel ratio of the engine is kept at a value lower than the stoichiometric value, so as to feed the engine with a rich mixture. In one example an electronic controller (E) is programmed for controlling the activation of the secondary air feeding system on the basis of a map, as a function of values of the engine load and the engine rotational speed. The map is predetermined depending upon the specific characteristics of the engine.</description><subject>BLASTING</subject><subject>COMBUSTION ENGINES</subject><subject>CONTROLLING COMBUSTION ENGINES</subject><subject>ENGINE PLANTS IN GENERAL</subject><subject>GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNALCOMBUSTION ENGINES</subject><subject>GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES ORENGINES IN GENERAL</subject><subject>HEATING</subject><subject>HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS</subject><subject>LIGHTING</subject><subject>MACHINES OR ENGINES IN GENERAL</subject><subject>MECHANICAL ENGINEERING</subject><subject>STEAM ENGINES</subject><subject>WEAPONS</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>2020</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNqNi8EKgkAQQL10iOof5gc8hCF43HR0h9wZ2Z2CTiKxnaIM-3-S6gM6PXi8t0ye4RwUHRiuwKFaqaAWD6Wwemlb4gbUIqCjEEg4gNRgIHTGH1JqmHSWQKzo2bTz5vbH8HHIDTF-cycqPj2hpbLFdbK4Drcpbn5cJVCjljaN46OP0zhc4j2-euyyvMizYme22R_JG6WWN8U</recordid><startdate>20200819</startdate><enddate>20200819</enddate><creator>BEDOGNI, Mr. Fabio</creator><creator>PIVETTI, Mr. Gianluca</creator><creator>MUSU, Mr. Ettore</creator><scope>EVB</scope></search><sort><creationdate>20200819</creationdate><title>SYSTEM AND METHOD FOR CONTROLLING THE EMISSIONS OF A SPARK-IGNITION INTERNAL COMBUSTION ENGINE OF A MOTOR-VEHICLE</title><author>BEDOGNI, Mr. Fabio ; PIVETTI, Mr. Gianluca ; MUSU, Mr. Ettore</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_EP3696394A13</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng ; fre ; ger</language><creationdate>2020</creationdate><topic>BLASTING</topic><topic>COMBUSTION ENGINES</topic><topic>CONTROLLING COMBUSTION ENGINES</topic><topic>ENGINE PLANTS IN GENERAL</topic><topic>GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNALCOMBUSTION ENGINES</topic><topic>GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES ORENGINES IN GENERAL</topic><topic>HEATING</topic><topic>HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS</topic><topic>LIGHTING</topic><topic>MACHINES OR ENGINES IN GENERAL</topic><topic>MECHANICAL ENGINEERING</topic><topic>STEAM ENGINES</topic><topic>WEAPONS</topic><toplevel>online_resources</toplevel><creatorcontrib>BEDOGNI, Mr. Fabio</creatorcontrib><creatorcontrib>PIVETTI, Mr. Gianluca</creatorcontrib><creatorcontrib>MUSU, Mr. Ettore</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>BEDOGNI, Mr. Fabio</au><au>PIVETTI, Mr. Gianluca</au><au>MUSU, Mr. Ettore</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>SYSTEM AND METHOD FOR CONTROLLING THE EMISSIONS OF A SPARK-IGNITION INTERNAL COMBUSTION ENGINE OF A MOTOR-VEHICLE</title><date>2020-08-19</date><risdate>2020</risdate><abstract>A system for controlling the emissions of a spark-ignition internal combustion engine of a motor-vehicle comprises first and second exhaust gas treatment devices (12, 13) and a secondary air feeding system (14; 20) for feeding secondary air into the exhaust gas conduit (11), between the first and second exhaust gas treatment devices (12, 13). The secondary air feeding system (14; 20) is activated only when the load of the engine is greater than a predetermined load value and/or when the engine rotational speed is greater than a predetermined speed value. In this condition the air/fuel ratio of the engine is kept at a value lower than the stoichiometric value, so as to feed the engine with a rich mixture. In one example an electronic controller (E) is programmed for controlling the activation of the secondary air feeding system on the basis of a map, as a function of values of the engine load and the engine rotational speed. The map is predetermined depending upon the specific characteristics of the engine.</abstract><oa>free_for_read</oa></addata></record> |
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| subjects | BLASTING COMBUSTION ENGINES CONTROLLING COMBUSTION ENGINES ENGINE PLANTS IN GENERAL GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNALCOMBUSTION ENGINES GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES ORENGINES IN GENERAL HEATING HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS LIGHTING MACHINES OR ENGINES IN GENERAL MECHANICAL ENGINEERING STEAM ENGINES WEAPONS |
| title | SYSTEM AND METHOD FOR CONTROLLING THE EMISSIONS OF A SPARK-IGNITION INTERNAL COMBUSTION ENGINE OF A MOTOR-VEHICLE |
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