AIR-FUEL RATIO CONTROLLING METHOD FOR FUEL SUPPLY MEANS USED IN INTERNAL-COMBUSTION ENGINE
PURPOSE:To improve the exhaust-gas purifying characteristics of an engine, by executing open-loop control of the fuel supply rate instead of feedback control of the same in case that the fuel supply rate is higher than a reference value, and varying the above reference value according to the tempera...
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| creator | KANOU SHIYUUICHI FUJIMURA AKIRA FUKUTOMI YOUJI |
| description | PURPOSE:To improve the exhaust-gas purifying characteristics of an engine, by executing open-loop control of the fuel supply rate instead of feedback control of the same in case that the fuel supply rate is higher than a reference value, and varying the above reference value according to the temperature of cooling water. CONSTITUTION:In operation of an engine 4, judgement is made at first by a control circuit 16 whether activation of an O2-sensor 14 is completed. In case that the judgement is YES, judgement is made whether the temperature TW of cooling water detected by a water-temperature sensor 12 is higher than a feedback control starting temperature TW01. In case of TW>=TW01, a reference value Tr corresponding to the temperature TW is searched from a map. Here, the above reference value Tr is set at either of two prescribed values Tr1, Tr2 by using a prescribed water temperature TW02 (>TW01) as a threshold value. Then, judgement is made whether the calculated fuel injection period TOUT is greater than said reference value Tr. In case of TOUT>Tr, an injector 15 is controlled by way of open-loop control instead of feedback control. |
| format | Patent |
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CONSTITUTION:In operation of an engine 4, judgement is made at first by a control circuit 16 whether activation of an O2-sensor 14 is completed. In case that the judgement is YES, judgement is made whether the temperature TW of cooling water detected by a water-temperature sensor 12 is higher than a feedback control starting temperature TW01. In case of TW>=TW01, a reference value Tr corresponding to the temperature TW is searched from a map. Here, the above reference value Tr is set at either of two prescribed values Tr1, Tr2 by using a prescribed water temperature TW02 (>TW01) as a threshold value. Then, judgement is made whether the calculated fuel injection period TOUT is greater than said reference value Tr. In case of TOUT>Tr, an injector 15 is controlled by way of open-loop control instead of feedback control.</description><language>eng</language><subject>BLASTING ; COMBUSTION ENGINES ; CONTROLLING COMBUSTION ENGINES ; HEATING ; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS ; LIGHTING ; MECHANICAL ENGINEERING ; WEAPONS</subject><creationdate>1985</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=19851203&DB=EPODOC&CC=JP&NR=S60243333A$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,778,883,25551,76302</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=19851203&DB=EPODOC&CC=JP&NR=S60243333A$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>KANOU SHIYUUICHI</creatorcontrib><creatorcontrib>FUJIMURA AKIRA</creatorcontrib><creatorcontrib>FUKUTOMI YOUJI</creatorcontrib><title>AIR-FUEL RATIO CONTROLLING METHOD FOR FUEL SUPPLY MEANS USED IN INTERNAL-COMBUSTION ENGINE</title><description>PURPOSE:To improve the exhaust-gas purifying characteristics of an engine, by executing open-loop control of the fuel supply rate instead of feedback control of the same in case that the fuel supply rate is higher than a reference value, and varying the above reference value according to the temperature of cooling water. CONSTITUTION:In operation of an engine 4, judgement is made at first by a control circuit 16 whether activation of an O2-sensor 14 is completed. In case that the judgement is YES, judgement is made whether the temperature TW of cooling water detected by a water-temperature sensor 12 is higher than a feedback control starting temperature TW01. In case of TW>=TW01, a reference value Tr corresponding to the temperature TW is searched from a map. Here, the above reference value Tr is set at either of two prescribed values Tr1, Tr2 by using a prescribed water temperature TW02 (>TW01) as a threshold value. Then, judgement is made whether the calculated fuel injection period TOUT is greater than said reference value Tr. In case of TOUT>Tr, an injector 15 is controlled by way of open-loop control instead of feedback control.</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>1985</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZIhy9AzSdQt19VEIcgzx9Fdw9vcLCfL38fH0c1fwdQ3x8HdRcPMPUgCrCA4NCPCJBAo7-gUrhAa7uih4-gFRiGuQn6OPrrO_r1NoMNAMPwVXP3dPP1ceBta0xJziVF4ozc2g6OYa4uyhm1qQH59aXJCYnJqXWhLvFRBsZmBkYgwEjsbEqAEAZMcyKA</recordid><startdate>19851203</startdate><enddate>19851203</enddate><creator>KANOU SHIYUUICHI</creator><creator>FUJIMURA AKIRA</creator><creator>FUKUTOMI YOUJI</creator><scope>EVB</scope></search><sort><creationdate>19851203</creationdate><title>AIR-FUEL RATIO CONTROLLING METHOD FOR FUEL SUPPLY MEANS USED IN INTERNAL-COMBUSTION ENGINE</title><author>KANOU SHIYUUICHI ; FUJIMURA AKIRA ; FUKUTOMI YOUJI</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_JPS60243333A3</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng</language><creationdate>1985</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>KANOU SHIYUUICHI</creatorcontrib><creatorcontrib>FUJIMURA AKIRA</creatorcontrib><creatorcontrib>FUKUTOMI YOUJI</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>KANOU SHIYUUICHI</au><au>FUJIMURA AKIRA</au><au>FUKUTOMI YOUJI</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>AIR-FUEL RATIO CONTROLLING METHOD FOR FUEL SUPPLY MEANS USED IN INTERNAL-COMBUSTION ENGINE</title><date>1985-12-03</date><risdate>1985</risdate><abstract>PURPOSE:To improve the exhaust-gas purifying characteristics of an engine, by executing open-loop control of the fuel supply rate instead of feedback control of the same in case that the fuel supply rate is higher than a reference value, and varying the above reference value according to the temperature of cooling water. CONSTITUTION:In operation of an engine 4, judgement is made at first by a control circuit 16 whether activation of an O2-sensor 14 is completed. In case that the judgement is YES, judgement is made whether the temperature TW of cooling water detected by a water-temperature sensor 12 is higher than a feedback control starting temperature TW01. In case of TW>=TW01, a reference value Tr corresponding to the temperature TW is searched from a map. Here, the above reference value Tr is set at either of two prescribed values Tr1, Tr2 by using a prescribed water temperature TW02 (>TW01) as a threshold value. Then, judgement is made whether the calculated fuel injection period TOUT is greater than said reference value Tr. In case of TOUT>Tr, an injector 15 is controlled by way of open-loop control instead of feedback control.</abstract><oa>free_for_read</oa></addata></record> |
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| language | eng |
| recordid | cdi_epo_espacenet_JPS60243333A |
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| subjects | BLASTING COMBUSTION ENGINES CONTROLLING COMBUSTION ENGINES HEATING HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS LIGHTING MECHANICAL ENGINEERING WEAPONS |
| title | AIR-FUEL RATIO CONTROLLING METHOD FOR FUEL SUPPLY MEANS USED IN INTERNAL-COMBUSTION ENGINE |
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