EXHAUST EMISSION CONTROL SYSTEM FOR INTERNAL COMBUSTION ENGINE
PROBLEM TO BE SOLVED: To purify exhaust emission effectively irrespective of the change in the operation conditions of an internal combustion engine. SOLUTION: A first exhaust pipe joint 12 is formed of exhaust pipes EX1, EX2, and EX3 connected with three cylinders E1, E2, E3 of an engine 11, and pr...
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| creator | ONO HIROSHI SAKANUSHI MASAHIRO |
| description | PROBLEM TO BE SOLVED: To purify exhaust emission effectively irrespective of the change in the operation conditions of an internal combustion engine. SOLUTION: A first exhaust pipe joint 12 is formed of exhaust pipes EX1, EX2, and EX3 connected with three cylinders E1, E2, E3 of an engine 11, and provided with a first three-way catalyst(TWC) 14a downstream. A second TWC 14b is provided downstream of an exhaust pipe EX4 connected with a cylinder E4. Exhaust pipes connected to downstream of the respective first and second TWCs 14a, 14b are joined to constitute a second exhaust pipe joint 13. A NOx removal catalyst 15 is provided downstream of the second joint 13, and a NOx absorbent 21 downstream of the catalyst 15. Under partial lean-burn control condition, the mixture leaner than the theoretical air-fuel ratio is supplied to the cylinders E1, E2, E3, and the mixture richer than the air-fuel ratio is supplied to the cylinder E4. Therefore, the overall engine 11 is controlled to the side leaner than the theoretical air-fuel ratio. |
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SOLUTION: A first exhaust pipe joint 12 is formed of exhaust pipes EX1, EX2, and EX3 connected with three cylinders E1, E2, E3 of an engine 11, and provided with a first three-way catalyst(TWC) 14a downstream. A second TWC 14b is provided downstream of an exhaust pipe EX4 connected with a cylinder E4. Exhaust pipes connected to downstream of the respective first and second TWCs 14a, 14b are joined to constitute a second exhaust pipe joint 13. A NOx removal catalyst 15 is provided downstream of the second joint 13, and a NOx absorbent 21 downstream of the catalyst 15. Under partial lean-burn control condition, the mixture leaner than the theoretical air-fuel ratio is supplied to the cylinders E1, E2, E3, and the mixture richer than the air-fuel ratio is supplied to the cylinder E4. Therefore, the overall engine 11 is controlled to the side leaner than the theoretical air-fuel ratio.</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>2000</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=20001219&DB=EPODOC&CC=JP&NR=2000352337A$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,778,883,25547,76298</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20001219&DB=EPODOC&CC=JP&NR=2000352337A$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>ONO HIROSHI</creatorcontrib><creatorcontrib>SAKANUSHI MASAHIRO</creatorcontrib><title>EXHAUST EMISSION CONTROL SYSTEM FOR INTERNAL COMBUSTION ENGINE</title><description>PROBLEM TO BE SOLVED: To purify exhaust emission effectively irrespective of the change in the operation conditions of an internal combustion engine. SOLUTION: A first exhaust pipe joint 12 is formed of exhaust pipes EX1, EX2, and EX3 connected with three cylinders E1, E2, E3 of an engine 11, and provided with a first three-way catalyst(TWC) 14a downstream. A second TWC 14b is provided downstream of an exhaust pipe EX4 connected with a cylinder E4. Exhaust pipes connected to downstream of the respective first and second TWCs 14a, 14b are joined to constitute a second exhaust pipe joint 13. A NOx removal catalyst 15 is provided downstream of the second joint 13, and a NOx absorbent 21 downstream of the catalyst 15. Under partial lean-burn control condition, the mixture leaner than the theoretical air-fuel ratio is supplied to the cylinders E1, E2, E3, and the mixture richer than the air-fuel ratio is supplied to the cylinder E4. Therefore, the overall engine 11 is controlled to the side leaner than the theoretical air-fuel ratio.</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>2000</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZLBzjfBwDA0OUXD19QwO9vT3U3D29wsJ8vdRCI4MDnH1VXDzD1Lw9AtxDfJz9AHK-ToBFYOUufq5e_q58jCwpiXmFKfyQmluBiU31xBnD93Ugvz41OKCxOTUvNSSeK8AIwMDA2NTI2Njc0djohQBAOZEKvc</recordid><startdate>20001219</startdate><enddate>20001219</enddate><creator>ONO HIROSHI</creator><creator>SAKANUSHI MASAHIRO</creator><scope>EVB</scope></search><sort><creationdate>20001219</creationdate><title>EXHAUST EMISSION CONTROL SYSTEM FOR INTERNAL COMBUSTION ENGINE</title><author>ONO HIROSHI ; SAKANUSHI MASAHIRO</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_JP2000352337A3</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng</language><creationdate>2000</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>ONO HIROSHI</creatorcontrib><creatorcontrib>SAKANUSHI MASAHIRO</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>ONO HIROSHI</au><au>SAKANUSHI MASAHIRO</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>EXHAUST EMISSION CONTROL SYSTEM FOR INTERNAL COMBUSTION ENGINE</title><date>2000-12-19</date><risdate>2000</risdate><abstract>PROBLEM TO BE SOLVED: To purify exhaust emission effectively irrespective of the change in the operation conditions of an internal combustion engine. SOLUTION: A first exhaust pipe joint 12 is formed of exhaust pipes EX1, EX2, and EX3 connected with three cylinders E1, E2, E3 of an engine 11, and provided with a first three-way catalyst(TWC) 14a downstream. A second TWC 14b is provided downstream of an exhaust pipe EX4 connected with a cylinder E4. Exhaust pipes connected to downstream of the respective first and second TWCs 14a, 14b are joined to constitute a second exhaust pipe joint 13. A NOx removal catalyst 15 is provided downstream of the second joint 13, and a NOx absorbent 21 downstream of the catalyst 15. Under partial lean-burn control condition, the mixture leaner than the theoretical air-fuel ratio is supplied to the cylinders E1, E2, E3, and the mixture richer than the air-fuel ratio is supplied to the cylinder E4. Therefore, the overall engine 11 is controlled to the side leaner than the theoretical air-fuel ratio.</abstract><edition>7</edition><oa>free_for_read</oa></addata></record> |
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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 | EXHAUST EMISSION CONTROL SYSTEM FOR INTERNAL COMBUSTION ENGINE |
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