MISFIRE DIAGNOSTIC DEVICE FOR ENGINE
PROBLEM TO BE SOLVED: To respectively properly diagnose a serious misfire trouble having high possibility for an adverse influence to be exercised on an exhaust gas purifying catalyst and a slight misfire trouble having low possibility for an adverse influence to be exercised thereon. SOLUTION: This...
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| creator | SAKAMOTO KATSUHIKO MAYAHARA KENJI UCHIUMI IWAO |
| description | PROBLEM TO BE SOLVED: To respectively properly diagnose a serious misfire trouble having high possibility for an adverse influence to be exercised on an exhaust gas purifying catalyst and a slight misfire trouble having low possibility for an adverse influence to be exercised thereon. SOLUTION: This misfire diagnostic device for an engine comprises a diagnosing period calculating means 41 to measure a diagnosis period for diagnosing a misfire trouble: a number of misfire occurring times measuring means 42 to measure the number of misfire occurring times; a threshold setting means 43 to set a threshold for deciding a misfire trouble; and a misfire trouble deciding means 44 to decide the misfire trouble of an engine by comparing the number of misfire occurring times, measured during a time in which a diagnosis period forms a preset reference time, with a threshold. The reference number of misfire occurring times for deciding vapor is set according to the number of misfire occurring times measured in a preset first reference time. A vapor deciding means 45 is provided to decide it based on the reference number of misfire occurring times and measurements of the number of misfire occurring times measured in a second reference time longer than the first reference time whether vapor of fuel is generated. |
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| fullrecord | <record><control><sourceid>epo_EVB</sourceid><recordid>TN_cdi_epo_espacenet_JPH10331706A</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>JPH10331706A</sourcerecordid><originalsourceid>FETCH-epo_espacenet_JPH10331706A3</originalsourceid><addsrcrecordid>eNrjZFDx9Qx28wxyVXDxdHT38w8O8XRWcHEN83R2VXDzD1Jw9XP39HPlYWBNS8wpTuWF0twMim6uIc4euqkF-fGpxQWJyal5qSXxXgEehgbGxobmBmaOxsSoAQBv9yL4</addsrcrecordid><sourcetype>Open Access Repository</sourcetype><iscdi>true</iscdi><recordtype>patent</recordtype></control><display><type>patent</type><title>MISFIRE DIAGNOSTIC DEVICE FOR ENGINE</title><source>esp@cenet</source><creator>SAKAMOTO KATSUHIKO ; MAYAHARA KENJI ; UCHIUMI IWAO</creator><creatorcontrib>SAKAMOTO KATSUHIKO ; MAYAHARA KENJI ; UCHIUMI IWAO</creatorcontrib><description>PROBLEM TO BE SOLVED: To respectively properly diagnose a serious misfire trouble having high possibility for an adverse influence to be exercised on an exhaust gas purifying catalyst and a slight misfire trouble having low possibility for an adverse influence to be exercised thereon. SOLUTION: This misfire diagnostic device for an engine comprises a diagnosing period calculating means 41 to measure a diagnosis period for diagnosing a misfire trouble: a number of misfire occurring times measuring means 42 to measure the number of misfire occurring times; a threshold setting means 43 to set a threshold for deciding a misfire trouble; and a misfire trouble deciding means 44 to decide the misfire trouble of an engine by comparing the number of misfire occurring times, measured during a time in which a diagnosis period forms a preset reference time, with a threshold. The reference number of misfire occurring times for deciding vapor is set according to the number of misfire occurring times measured in a preset first reference time. A vapor deciding means 45 is provided to decide it based on the reference number of misfire occurring times and measurements of the number of misfire occurring times measured in a second reference time longer than the first reference time whether vapor of fuel is generated.</description><edition>6</edition><language>eng</language><subject>BLASTING ; COMBUSTION ENGINES ; CONTROLLING COMBUSTION ENGINES ; HEATING ; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS ; LIGHTING ; MECHANICAL ENGINEERING ; WEAPONS</subject><creationdate>1998</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=19981215&DB=EPODOC&CC=JP&NR=H10331706A$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,780,885,25562,76317</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=19981215&DB=EPODOC&CC=JP&NR=H10331706A$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>SAKAMOTO KATSUHIKO</creatorcontrib><creatorcontrib>MAYAHARA KENJI</creatorcontrib><creatorcontrib>UCHIUMI IWAO</creatorcontrib><title>MISFIRE DIAGNOSTIC DEVICE FOR ENGINE</title><description>PROBLEM TO BE SOLVED: To respectively properly diagnose a serious misfire trouble having high possibility for an adverse influence to be exercised on an exhaust gas purifying catalyst and a slight misfire trouble having low possibility for an adverse influence to be exercised thereon. SOLUTION: This misfire diagnostic device for an engine comprises a diagnosing period calculating means 41 to measure a diagnosis period for diagnosing a misfire trouble: a number of misfire occurring times measuring means 42 to measure the number of misfire occurring times; a threshold setting means 43 to set a threshold for deciding a misfire trouble; and a misfire trouble deciding means 44 to decide the misfire trouble of an engine by comparing the number of misfire occurring times, measured during a time in which a diagnosis period forms a preset reference time, with a threshold. The reference number of misfire occurring times for deciding vapor is set according to the number of misfire occurring times measured in a preset first reference time. A vapor deciding means 45 is provided to decide it based on the reference number of misfire occurring times and measurements of the number of misfire occurring times measured in a second reference time longer than the first reference time whether vapor of fuel is generated.</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>1998</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZFDx9Qx28wxyVXDxdHT38w8O8XRWcHEN83R2VXDzD1Jw9XP39HPlYWBNS8wpTuWF0twMim6uIc4euqkF-fGpxQWJyal5qSXxXgEehgbGxobmBmaOxsSoAQBv9yL4</recordid><startdate>19981215</startdate><enddate>19981215</enddate><creator>SAKAMOTO KATSUHIKO</creator><creator>MAYAHARA KENJI</creator><creator>UCHIUMI IWAO</creator><scope>EVB</scope></search><sort><creationdate>19981215</creationdate><title>MISFIRE DIAGNOSTIC DEVICE FOR ENGINE</title><author>SAKAMOTO KATSUHIKO ; MAYAHARA KENJI ; UCHIUMI IWAO</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_JPH10331706A3</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng</language><creationdate>1998</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>SAKAMOTO KATSUHIKO</creatorcontrib><creatorcontrib>MAYAHARA KENJI</creatorcontrib><creatorcontrib>UCHIUMI IWAO</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>SAKAMOTO KATSUHIKO</au><au>MAYAHARA KENJI</au><au>UCHIUMI IWAO</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>MISFIRE DIAGNOSTIC DEVICE FOR ENGINE</title><date>1998-12-15</date><risdate>1998</risdate><abstract>PROBLEM TO BE SOLVED: To respectively properly diagnose a serious misfire trouble having high possibility for an adverse influence to be exercised on an exhaust gas purifying catalyst and a slight misfire trouble having low possibility for an adverse influence to be exercised thereon. SOLUTION: This misfire diagnostic device for an engine comprises a diagnosing period calculating means 41 to measure a diagnosis period for diagnosing a misfire trouble: a number of misfire occurring times measuring means 42 to measure the number of misfire occurring times; a threshold setting means 43 to set a threshold for deciding a misfire trouble; and a misfire trouble deciding means 44 to decide the misfire trouble of an engine by comparing the number of misfire occurring times, measured during a time in which a diagnosis period forms a preset reference time, with a threshold. The reference number of misfire occurring times for deciding vapor is set according to the number of misfire occurring times measured in a preset first reference time. A vapor deciding means 45 is provided to decide it based on the reference number of misfire occurring times and measurements of the number of misfire occurring times measured in a second reference time longer than the first reference time whether vapor of fuel is generated.</abstract><edition>6</edition><oa>free_for_read</oa></addata></record> |
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| language | eng |
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| subjects | BLASTING COMBUSTION ENGINES CONTROLLING COMBUSTION ENGINES HEATING HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS LIGHTING MECHANICAL ENGINEERING WEAPONS |
| title | MISFIRE DIAGNOSTIC DEVICE FOR ENGINE |
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