CONTROL DEVICE FOR INTERNAL COMBUSTION ENGINE
To provide a control device for an internal combustion engine capable of satisfactorily controlling an air-fuel ratio of mixture without excessively enriching it during air scavenging control while securing execution of the air scavenging control through relatively simple control.SOLUTION: An F/B co...
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| creator | MAEDA TSUYOSHI KURAHASHI KEN YAMADA YUKI |
| description | To provide a control device for an internal combustion engine capable of satisfactorily controlling an air-fuel ratio of mixture without excessively enriching it during air scavenging control while securing execution of the air scavenging control through relatively simple control.SOLUTION: An F/B correction coefficient KAF for correcting a fuel injection amount GFUEL in such a manner that an equivalent ratio KACT detected by a LAF sensor 33 becomes a target equivalent ratio KCMD is calculated by using feedback control including a predetermined gain (step 6) and further, a reference F/B correction coefficient KREFX is set. Air scavenging control is executed for air-scavenging the inside of a combustion chamber by blowing through intake air by changing valve overlap properties of an intake valve and an exhaust valve in a supercharge state (step 15). During the air scavenging control, while the F/B correction coefficient KAF is changed in a direction of correcting the fuel injection amount GFUEL to a richer side in relative to the reference F/B correction coefficient KREFX, the gain of the feedback control is reduced (step 20).SELECTED DRAWING: Figure 5
【課題】比較的簡便な制御により、掃気制御の実行を確保しながら、掃気制御中、混合気の空燃比を過度にリッチ化させず、良好に制御できる内燃機関の制御装置を提供する。【解決手段】本発明では、ＬＡＦセンサ３３による検出当量比ＫＡＣＴが目標当量比ＫＣＭＤになるように燃料噴射量ＧＦＵＥＬを補正するＦ／Ｂ補正係数ＫＡＦが、所定のゲインを含むフィードバック制御を用いて算出され（ステップ６）、さらに基準Ｆ／Ｂ補正係数ＫＲＥＦＸが設定される。過給状態で、吸気弁と排気弁とのバルブオーバーラップ特性を変更することで、吸気の吹き抜けにより燃焼室内を掃気する掃気制御が実行される（ステップ１５）。この掃気制御中、Ｆ／Ｂ補正係数ＫＡＦが基準Ｆ／Ｂ補正係数ＫＲＥＦＸに対して、燃料噴射量ＧＦＵＥＬをよりリッチ側に補正する方向に変化しているときに、フィードバック制御のゲインが低減される（ステップ２０）。【選択図】図５ |
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【課題】比較的簡便な制御により、掃気制御の実行を確保しながら、掃気制御中、混合気の空燃比を過度にリッチ化させず、良好に制御できる内燃機関の制御装置を提供する。【解決手段】本発明では、ＬＡＦセンサ３３による検出当量比ＫＡＣＴが目標当量比ＫＣＭＤになるように燃料噴射量ＧＦＵＥＬを補正するＦ／Ｂ補正係数ＫＡＦが、所定のゲインを含むフィードバック制御を用いて算出され（ステップ６）、さらに基準Ｆ／Ｂ補正係数ＫＲＥＦＸが設定される。過給状態で、吸気弁と排気弁とのバルブオーバーラップ特性を変更することで、吸気の吹き抜けにより燃焼室内を掃気する掃気制御が実行される（ステップ１５）。この掃気制御中、Ｆ／Ｂ補正係数ＫＡＦが基準Ｆ／Ｂ補正係数ＫＲＥＦＸに対して、燃料噴射量ＧＦＵＥＬをよりリッチ側に補正する方向に変化しているときに、フィードバック制御のゲインが低減される（ステップ２０）。【選択図】図５</description><language>eng ; jpn</language><subject>BLASTING ; COMBUSTION ENGINES ; CONTROLLING COMBUSTION ENGINES ; HEATING ; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS ; LIGHTING ; MECHANICAL ENGINEERING ; WEAPONS</subject><creationdate>2019</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=20190425&DB=EPODOC&CC=JP&NR=2019065809A$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,778,883,25547,76298</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20190425&DB=EPODOC&CC=JP&NR=2019065809A$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>MAEDA TSUYOSHI</creatorcontrib><creatorcontrib>KURAHASHI KEN</creatorcontrib><creatorcontrib>YAMADA YUKI</creatorcontrib><title>CONTROL DEVICE FOR INTERNAL COMBUSTION ENGINE</title><description>To provide a control device for an internal combustion engine capable of satisfactorily controlling an air-fuel ratio of mixture without excessively enriching it during air scavenging control while securing execution of the air scavenging control through relatively simple control.SOLUTION: An F/B correction coefficient KAF for correcting a fuel injection amount GFUEL in such a manner that an equivalent ratio KACT detected by a LAF sensor 33 becomes a target equivalent ratio KCMD is calculated by using feedback control including a predetermined gain (step 6) and further, a reference F/B correction coefficient KREFX is set. Air scavenging control is executed for air-scavenging the inside of a combustion chamber by blowing through intake air by changing valve overlap properties of an intake valve and an exhaust valve in a supercharge state (step 15). During the air scavenging control, while the F/B correction coefficient KAF is changed in a direction of correcting the fuel injection amount GFUEL to a richer side in relative to the reference F/B correction coefficient KREFX, the gain of the feedback control is reduced (step 20).SELECTED DRAWING: Figure 5
【課題】比較的簡便な制御により、掃気制御の実行を確保しながら、掃気制御中、混合気の空燃比を過度にリッチ化させず、良好に制御できる内燃機関の制御装置を提供する。【解決手段】本発明では、ＬＡＦセンサ３３による検出当量比ＫＡＣＴが目標当量比ＫＣＭＤになるように燃料噴射量ＧＦＵＥＬを補正するＦ／Ｂ補正係数ＫＡＦが、所定のゲインを含むフィードバック制御を用いて算出され（ステップ６）、さらに基準Ｆ／Ｂ補正係数ＫＲＥＦＸが設定される。過給状態で、吸気弁と排気弁とのバルブオーバーラップ特性を変更することで、吸気の吹き抜けにより燃焼室内を掃気する掃気制御が実行される（ステップ１５）。この掃気制御中、Ｆ／Ｂ補正係数ＫＡＦが基準Ｆ／Ｂ補正係数ＫＲＥＦＸに対して、燃料噴射量ＧＦＵＥＬをよりリッチ側に補正する方向に変化しているときに、フィードバック制御のゲインが低減される（ステップ２０）。【選択図】図５</description><subject>BLASTING</subject><subject>COMBUSTION ENGINES</subject><subject>CONTROLLING COMBUSTION ENGINES</subject><subject>HEATING</subject><subject>HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS</subject><subject>LIGHTING</subject><subject>MECHANICAL ENGINEERING</subject><subject>WEAPONS</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>2019</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZNB19vcLCfL3UXBxDfN0dlVw8w9S8PQLcQ3yc_RRcPb3dQoNDvH091Nw9XP39HPlYWBNS8wpTuWF0twMSm6uIc4euqkF-fGpxQWJyal5qSXxXgFGBoaWBmamFgaWjsZEKQIAD1YmBg</recordid><startdate>20190425</startdate><enddate>20190425</enddate><creator>MAEDA TSUYOSHI</creator><creator>KURAHASHI KEN</creator><creator>YAMADA YUKI</creator><scope>EVB</scope></search><sort><creationdate>20190425</creationdate><title>CONTROL DEVICE FOR INTERNAL COMBUSTION ENGINE</title><author>MAEDA TSUYOSHI ; KURAHASHI KEN ; YAMADA YUKI</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_JP2019065809A3</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng ; jpn</language><creationdate>2019</creationdate><topic>BLASTING</topic><topic>COMBUSTION ENGINES</topic><topic>CONTROLLING COMBUSTION ENGINES</topic><topic>HEATING</topic><topic>HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS</topic><topic>LIGHTING</topic><topic>MECHANICAL ENGINEERING</topic><topic>WEAPONS</topic><toplevel>online_resources</toplevel><creatorcontrib>MAEDA TSUYOSHI</creatorcontrib><creatorcontrib>KURAHASHI KEN</creatorcontrib><creatorcontrib>YAMADA YUKI</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>MAEDA TSUYOSHI</au><au>KURAHASHI KEN</au><au>YAMADA YUKI</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>CONTROL DEVICE FOR INTERNAL COMBUSTION ENGINE</title><date>2019-04-25</date><risdate>2019</risdate><abstract>To provide a control device for an internal combustion engine capable of satisfactorily controlling an air-fuel ratio of mixture without excessively enriching it during air scavenging control while securing execution of the air scavenging control through relatively simple control.SOLUTION: An F/B correction coefficient KAF for correcting a fuel injection amount GFUEL in such a manner that an equivalent ratio KACT detected by a LAF sensor 33 becomes a target equivalent ratio KCMD is calculated by using feedback control including a predetermined gain (step 6) and further, a reference F/B correction coefficient KREFX is set. Air scavenging control is executed for air-scavenging the inside of a combustion chamber by blowing through intake air by changing valve overlap properties of an intake valve and an exhaust valve in a supercharge state (step 15). During the air scavenging control, while the F/B correction coefficient KAF is changed in a direction of correcting the fuel injection amount GFUEL to a richer side in relative to the reference F/B correction coefficient KREFX, the gain of the feedback control is reduced (step 20).SELECTED DRAWING: Figure 5
【課題】比較的簡便な制御により、掃気制御の実行を確保しながら、掃気制御中、混合気の空燃比を過度にリッチ化させず、良好に制御できる内燃機関の制御装置を提供する。【解決手段】本発明では、ＬＡＦセンサ３３による検出当量比ＫＡＣＴが目標当量比ＫＣＭＤになるように燃料噴射量ＧＦＵＥＬを補正するＦ／Ｂ補正係数ＫＡＦが、所定のゲインを含むフィードバック制御を用いて算出され（ステップ６）、さらに基準Ｆ／Ｂ補正係数ＫＲＥＦＸが設定される。過給状態で、吸気弁と排気弁とのバルブオーバーラップ特性を変更することで、吸気の吹き抜けにより燃焼室内を掃気する掃気制御が実行される（ステップ１５）。この掃気制御中、Ｆ／Ｂ補正係数ＫＡＦが基準Ｆ／Ｂ補正係数ＫＲＥＦＸに対して、燃料噴射量ＧＦＵＥＬをよりリッチ側に補正する方向に変化しているときに、フィードバック制御のゲインが低減される（ステップ２０）。【選択図】図５</abstract><oa>free_for_read</oa></addata></record> |
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| subjects | BLASTING COMBUSTION ENGINES CONTROLLING COMBUSTION ENGINES HEATING HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS LIGHTING MECHANICAL ENGINEERING WEAPONS |
| title | CONTROL DEVICE FOR INTERNAL COMBUSTION ENGINE |
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