AIR-FUEL RATIO CONTROL SYSTEM FOR INTERNAL COMBUSTION ENGINE
PROBLEM TO BE SOLVED: To correct output fluctuation to a deterioration of an air-fuel ratio sensor in a catalyst upstream side. SOLUTION: A catalyst 3 having oxygen storage ability is installed in an engine exhaust passage, an oxygen storage quantity is estimated on the basis of an output of the air...
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| creator | KOBAYASHI HIDEAKI KAKIZAKI SHIGEAKI |
| description | PROBLEM TO BE SOLVED: To correct output fluctuation to a deterioration of an air-fuel ratio sensor in a catalyst upstream side. SOLUTION: A catalyst 3 having oxygen storage ability is installed in an engine exhaust passage, an oxygen storage quantity is estimated on the basis of an output of the air-fuel ratio sensor 4 in the upstream side of the catalyst 3, and an air-fuel ratio is controlled so that the oxygen storage quantity matches a desired value. When an output of a downstream side air-fuel ratio sensor 5 continues to be in a lean side or a rich side exceeding determination timing which changes with operating conditions, the output of the upstream side air-fuel ratio sensor 4 is corrected on the basis of the output of the downstream side air-fuel ratio sensor 5. |
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SOLUTION: A catalyst 3 having oxygen storage ability is installed in an engine exhaust passage, an oxygen storage quantity is estimated on the basis of an output of the air-fuel ratio sensor 4 in the upstream side of the catalyst 3, and an air-fuel ratio is controlled so that the oxygen storage quantity matches a desired value. When an output of a downstream side air-fuel ratio sensor 5 continues to be in a lean side or a rich side exceeding determination timing which changes with operating conditions, the output of the upstream side air-fuel ratio sensor 4 is corrected on the basis of the output of the downstream side air-fuel ratio sensor 5.</description><edition>7</edition><language>eng</language><subject>BLASTING ; CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TOTRANSPORTATION ; 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 ; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC ; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS ; HEATING ; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS ; LIGHTING ; MACHINES OR ENGINES IN GENERAL ; MECHANICAL ENGINEERING ; STEAM ENGINES ; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS ; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE ; WEAPONS</subject><creationdate>2003</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=20030213&DB=EPODOC&CC=JP&NR=2003041990A$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,780,885,25563,76318</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20030213&DB=EPODOC&CC=JP&NR=2003041990A$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>KOBAYASHI HIDEAKI</creatorcontrib><creatorcontrib>KAKIZAKI SHIGEAKI</creatorcontrib><title>AIR-FUEL RATIO CONTROL SYSTEM FOR INTERNAL COMBUSTION ENGINE</title><description>PROBLEM TO BE SOLVED: To correct output fluctuation to a deterioration of an air-fuel ratio sensor in a catalyst upstream side. 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When an output of a downstream side air-fuel ratio sensor 5 continues to be in a lean side or a rich side exceeding determination timing which changes with operating conditions, the output of the upstream side air-fuel ratio sensor 4 is corrected on the basis of the output of the downstream side air-fuel ratio sensor 5.</description><subject>BLASTING</subject><subject>CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TOTRANSPORTATION</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>GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC</subject><subject>GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS</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>TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS</subject><subject>TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE</subject><subject>WEAPONS</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>2003</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZLBx9AzSdQt19VEIcgzx9Fdw9vcLCfL3UQiODA5x9VVw8w9S8PQLcQ3yc_QByvk6hQYDVfkpuPq5e_q58jCwpiXmFKfyQmluBiU31xBnD93Ugvz41OKCxOTUvNSSeK8AIwMDYwMTQ0tLA0djohQBAGjgKiY</recordid><startdate>20030213</startdate><enddate>20030213</enddate><creator>KOBAYASHI HIDEAKI</creator><creator>KAKIZAKI SHIGEAKI</creator><scope>EVB</scope></search><sort><creationdate>20030213</creationdate><title>AIR-FUEL RATIO CONTROL SYSTEM FOR INTERNAL COMBUSTION ENGINE</title><author>KOBAYASHI HIDEAKI ; KAKIZAKI SHIGEAKI</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_JP2003041990A3</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng</language><creationdate>2003</creationdate><topic>BLASTING</topic><topic>CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TOTRANSPORTATION</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>GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC</topic><topic>GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS</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>TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS</topic><topic>TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE</topic><topic>WEAPONS</topic><toplevel>online_resources</toplevel><creatorcontrib>KOBAYASHI HIDEAKI</creatorcontrib><creatorcontrib>KAKIZAKI SHIGEAKI</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>KOBAYASHI HIDEAKI</au><au>KAKIZAKI SHIGEAKI</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>AIR-FUEL RATIO CONTROL SYSTEM FOR INTERNAL COMBUSTION ENGINE</title><date>2003-02-13</date><risdate>2003</risdate><abstract>PROBLEM TO BE SOLVED: To correct output fluctuation to a deterioration of an air-fuel ratio sensor in a catalyst upstream side. SOLUTION: A catalyst 3 having oxygen storage ability is installed in an engine exhaust passage, an oxygen storage quantity is estimated on the basis of an output of the air-fuel ratio sensor 4 in the upstream side of the catalyst 3, and an air-fuel ratio is controlled so that the oxygen storage quantity matches a desired value. When an output of a downstream side air-fuel ratio sensor 5 continues to be in a lean side or a rich side exceeding determination timing which changes with operating conditions, the output of the upstream side air-fuel ratio sensor 4 is corrected on the basis of the output of the downstream side air-fuel ratio sensor 5.</abstract><edition>7</edition><oa>free_for_read</oa></addata></record> |
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| language | eng |
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| subjects | BLASTING CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TOTRANSPORTATION 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 GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS HEATING HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS LIGHTING MACHINES OR ENGINES IN GENERAL MECHANICAL ENGINEERING STEAM ENGINES TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE WEAPONS |
| title | AIR-FUEL RATIO CONTROL SYSTEM FOR INTERNAL COMBUSTION ENGINE |
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