DEFECT DETECTING DEVICE OF EXHAUST PURIFYING FILTER
PROBLEM TO BE SOLVED: To provide a defect detecting device capable of accurately detecting a local defect in an exhaust purifying filter.SOLUTION: A DPF (Diesel Particulate Filter) as the exhaust purifying filter is divided into three areas mutually defined in parallel to a flow of exhaust gas, and...
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| creator | AOYAMA YOSUKE |
| description | PROBLEM TO BE SOLVED: To provide a defect detecting device capable of accurately detecting a local defect in an exhaust purifying filter.SOLUTION: A DPF (Diesel Particulate Filter) as the exhaust purifying filter is divided into three areas mutually defined in parallel to a flow of exhaust gas, and flow rate sensors are arranged for respectively detecting an exhaust flow rate of passing through the three areas. Just after regenerating the DPF (S1), when under an operation condition of being steady and exceeding a threshold value in the exhaust flow rate (S2), a deviation in the exhaust flow rate among the three areas is arithmetically operated (S3 and S4), and a maximum value MAX among an absolute value of the deviation is compared with a defect determining level SL (S5). When the maximum value MAX is the defect determining level SL or more, the occurrence of a detect (melting damage) is determined, and a warning lamp is turned on (S6). |
| format | Patent |
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Just after regenerating the DPF (S1), when under an operation condition of being steady and exceeding a threshold value in the exhaust flow rate (S2), a deviation in the exhaust flow rate among the three areas is arithmetically operated (S3 and S4), and a maximum value MAX among an absolute value of the deviation is compared with a defect determining level SL (S5). When the maximum value MAX is the defect determining level SL or more, the occurrence of a detect (melting damage) is determined, and a warning lamp is turned on (S6).</description><language>eng</language><subject>BLASTING ; 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 ; 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>2012</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=20120614&DB=EPODOC&CC=JP&NR=2012112285A$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,776,881,25542,76289</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20120614&DB=EPODOC&CC=JP&NR=2012112285A$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>AOYAMA YOSUKE</creatorcontrib><title>DEFECT DETECTING DEVICE OF EXHAUST PURIFYING FILTER</title><description>PROBLEM TO BE SOLVED: To provide a defect detecting device capable of accurately detecting a local defect in an exhaust purifying filter.SOLUTION: A DPF (Diesel Particulate Filter) as the exhaust purifying filter is divided into three areas mutually defined in parallel to a flow of exhaust gas, and flow rate sensors are arranged for respectively detecting an exhaust flow rate of passing through the three areas. Just after regenerating the DPF (S1), when under an operation condition of being steady and exceeding a threshold value in the exhaust flow rate (S2), a deviation in the exhaust flow rate among the three areas is arithmetically operated (S3 and S4), and a maximum value MAX among an absolute value of the deviation is compared with a defect determining level SL (S5). 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Just after regenerating the DPF (S1), when under an operation condition of being steady and exceeding a threshold value in the exhaust flow rate (S2), a deviation in the exhaust flow rate among the three areas is arithmetically operated (S3 and S4), and a maximum value MAX among an absolute value of the deviation is compared with a defect determining level SL (S5). When the maximum value MAX is the defect determining level SL or more, the occurrence of a detect (melting damage) is determined, and a warning lamp is turned on (S6).</abstract><oa>free_for_read</oa></addata></record> |
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| subjects | BLASTING 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 LIGHTING MACHINES OR ENGINES IN GENERAL MECHANICAL ENGINEERING PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL SEPARATION STEAM ENGINES TRANSPORTING WEAPONS |
| title | DEFECT DETECTING DEVICE OF EXHAUST PURIFYING FILTER |
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