EXHAUST EMISSION CONTROL DEVICE FOR ENGINE
PROBLEM TO BE SOLVED: To provide an exhaust emission control device for an engine capable of efficiently and promptly executing NOx purge and thus reducing fuel amount required for the NOx purge.SOLUTION: During deceleration of a vehicle accompanying fuel cut of an engine 1, when NOx purge of an NOx...
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| creator | NISHIYAMA NAOYUKI |
| description | PROBLEM TO BE SOLVED: To provide an exhaust emission control device for an engine capable of efficiently and promptly executing NOx purge and thus reducing fuel amount required for the NOx purge.SOLUTION: During deceleration of a vehicle accompanying fuel cut of an engine 1, when NOx purge of an NOx occlusion catalyst 14 is required and can be executed, an intake throttle valve 8 and an exhaust shutter 13 are closed, and an EGR valve 16 is opened, so as to form a closed space in which an exhaust side and an intake side of a cylinder interior portion 17 are communicated with each other via an EGR passage 15. Intake air trapped in the closed space is recirculated as recirculation air, and fuel is injected into the recirculation air to make the air fuel-rich. Then, the exhaust shutter 13 is opened, and the EGR valve 16 is closed, so as to discharge the recirculation air in the closed space to the exhaust side and supply the recirculation air to the NOx occlusion catalyst 14. By repeating this cycle, the NOx purge is executed intermittently.SELECTED DRAWING: Figure 3
【課題】ＮＯxパージを効率的且つ迅速に実行でき、これによりＮＯxパージに要する燃料量を節減できるエンジンの排気浄化装置を提供する。【解決手段】エンジン１の燃料カットを伴う車両の減速中において、ＮＯx吸蔵触媒１４のＮＯxパージを要し且つそれを実行可能な場合に、吸気スロットル弁８及び排気シャッター１３を閉弁し、ＥＧＲ弁１６を開弁して筒内１７の排気側と吸気側とをＥＧＲ通路１５を経て連通させた閉空間を形成し、閉空間内に閉じこめられた吸入空気を環流空気として環流させると共に、その環流空気中に燃料を噴射してリッチ化し、その後に排気シャッター１３を開弁し、ＥＧＲ弁１６を閉弁して閉空間内の環流空気を排気側に排出してＮＯx吸蔵触媒１４に供給し、以上のサイクルを繰り返すことにより間欠的にＮＯxパージを実行する。【選択図】図３ |
| format | Patent |
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【課題】ＮＯxパージを効率的且つ迅速に実行でき、これによりＮＯxパージに要する燃料量を節減できるエンジンの排気浄化装置を提供する。【解決手段】エンジン１の燃料カットを伴う車両の減速中において、ＮＯx吸蔵触媒１４のＮＯxパージを要し且つそれを実行可能な場合に、吸気スロットル弁８及び排気シャッター１３を閉弁し、ＥＧＲ弁１６を開弁して筒内１７の排気側と吸気側とをＥＧＲ通路１５を経て連通させた閉空間を形成し、閉空間内に閉じこめられた吸入空気を環流空気として環流させると共に、その環流空気中に燃料を噴射してリッチ化し、その後に排気シャッター１３を開弁し、ＥＧＲ弁１６を閉弁して閉空間内の環流空気を排気側に排出してＮＯx吸蔵触媒１４に供給し、以上のサイクルを繰り返すことにより間欠的にＮＯxパージを実行する。【選択図】図３</description><language>eng ; jpn</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 ; PERFORMING OPERATIONS ; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL ; SEPARATION ; STEAM ENGINES ; TRANSPORTING ; WEAPONS</subject><creationdate>2017</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=20170810&DB=EPODOC&CC=JP&NR=2017137843A$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,780,885,25562,76317</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20170810&DB=EPODOC&CC=JP&NR=2017137843A$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>NISHIYAMA NAOYUKI</creatorcontrib><title>EXHAUST EMISSION CONTROL DEVICE FOR ENGINE</title><description>PROBLEM TO BE SOLVED: To provide an exhaust emission control device for an engine capable of efficiently and promptly executing NOx purge and thus reducing fuel amount required for the NOx purge.SOLUTION: During deceleration of a vehicle accompanying fuel cut of an engine 1, when NOx purge of an NOx occlusion catalyst 14 is required and can be executed, an intake throttle valve 8 and an exhaust shutter 13 are closed, and an EGR valve 16 is opened, so as to form a closed space in which an exhaust side and an intake side of a cylinder interior portion 17 are communicated with each other via an EGR passage 15. Intake air trapped in the closed space is recirculated as recirculation air, and fuel is injected into the recirculation air to make the air fuel-rich. Then, the exhaust shutter 13 is opened, and the EGR valve 16 is closed, so as to discharge the recirculation air in the closed space to the exhaust side and supply the recirculation air to the NOx occlusion catalyst 14. By repeating this cycle, the NOx purge is executed intermittently.SELECTED DRAWING: Figure 3
【課題】ＮＯxパージを効率的且つ迅速に実行でき、これによりＮＯxパージに要する燃料量を節減できるエンジンの排気浄化装置を提供する。【解決手段】エンジン１の燃料カットを伴う車両の減速中において、ＮＯx吸蔵触媒１４のＮＯxパージを要し且つそれを実行可能な場合に、吸気スロットル弁８及び排気シャッター１３を閉弁し、ＥＧＲ弁１６を開弁して筒内１７の排気側と吸気側とをＥＧＲ通路１５を経て連通させた閉空間を形成し、閉空間内に閉じこめられた吸入空気を環流空気として環流させると共に、その環流空気中に燃料を噴射してリッチ化し、その後に排気シャッター１３を開弁し、ＥＧＲ弁１６を閉弁して閉空間内の環流空気を排気側に排出してＮＯx吸蔵触媒１４に供給し、以上のサイクルを繰り返すことにより間欠的にＮＯxパージを実行する。【選択図】図３</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>PERFORMING OPERATIONS</subject><subject>PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL</subject><subject>SEPARATION</subject><subject>STEAM ENGINES</subject><subject>TRANSPORTING</subject><subject>WEAPONS</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>2017</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZNByjfBwDA0OUXD19QwO9vT3U3D29wsJ8vdRcHEN83R2VXDzD1Jw9XP39HPlYWBNS8wpTuWF0twMSm6uIc4euqkF-fGpxQWJyal5qSXxXgFGBobmhsbmFibGjsZEKQIAoNUlJA</recordid><startdate>20170810</startdate><enddate>20170810</enddate><creator>NISHIYAMA NAOYUKI</creator><scope>EVB</scope></search><sort><creationdate>20170810</creationdate><title>EXHAUST EMISSION CONTROL DEVICE FOR ENGINE</title><author>NISHIYAMA NAOYUKI</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_JP2017137843A3</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng ; jpn</language><creationdate>2017</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>PERFORMING OPERATIONS</topic><topic>PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL</topic><topic>SEPARATION</topic><topic>STEAM ENGINES</topic><topic>TRANSPORTING</topic><topic>WEAPONS</topic><toplevel>online_resources</toplevel><creatorcontrib>NISHIYAMA NAOYUKI</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>NISHIYAMA NAOYUKI</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>EXHAUST EMISSION CONTROL DEVICE FOR ENGINE</title><date>2017-08-10</date><risdate>2017</risdate><abstract>PROBLEM TO BE SOLVED: To provide an exhaust emission control device for an engine capable of efficiently and promptly executing NOx purge and thus reducing fuel amount required for the NOx purge.SOLUTION: During deceleration of a vehicle accompanying fuel cut of an engine 1, when NOx purge of an NOx occlusion catalyst 14 is required and can be executed, an intake throttle valve 8 and an exhaust shutter 13 are closed, and an EGR valve 16 is opened, so as to form a closed space in which an exhaust side and an intake side of a cylinder interior portion 17 are communicated with each other via an EGR passage 15. Intake air trapped in the closed space is recirculated as recirculation air, and fuel is injected into the recirculation air to make the air fuel-rich. Then, the exhaust shutter 13 is opened, and the EGR valve 16 is closed, so as to discharge the recirculation air in the closed space to the exhaust side and supply the recirculation air to the NOx occlusion catalyst 14. By repeating this cycle, the NOx purge is executed intermittently.SELECTED DRAWING: Figure 3
【課題】ＮＯxパージを効率的且つ迅速に実行でき、これによりＮＯxパージに要する燃料量を節減できるエンジンの排気浄化装置を提供する。【解決手段】エンジン１の燃料カットを伴う車両の減速中において、ＮＯx吸蔵触媒１４のＮＯxパージを要し且つそれを実行可能な場合に、吸気スロットル弁８及び排気シャッター１３を閉弁し、ＥＧＲ弁１６を開弁して筒内１７の排気側と吸気側とをＥＧＲ通路１５を経て連通させた閉空間を形成し、閉空間内に閉じこめられた吸入空気を環流空気として環流させると共に、その環流空気中に燃料を噴射してリッチ化し、その後に排気シャッター１３を開弁し、ＥＧＲ弁１６を閉弁して閉空間内の環流空気を排気側に排出してＮＯx吸蔵触媒１４に供給し、以上のサイクルを繰り返すことにより間欠的にＮＯxパージを実行する。【選択図】図３</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 PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL SEPARATION STEAM ENGINES TRANSPORTING WEAPONS |
| title | EXHAUST EMISSION CONTROL DEVICE FOR ENGINE |
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