Catalytic system for removing NOx from diesel engine exhaust gas
In the presence of hydrocarbons the catalytic converter acts as a nitrogen oxide reducing catalyser (4) whereby the sensor downstream of the catalyser is a hydrocarbon sensor (10) attached to the dosing control unit as dosing regulator (7). The hydrocarbon sensor is used as an actual value sensor, t...
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| creator | ENGELER, WERNER DUESTERDIEK, THORSTEN |
| description | In the presence of hydrocarbons the catalytic converter acts as a nitrogen oxide reducing catalyser (4) whereby the sensor downstream of the catalyser is a hydrocarbon sensor (10) attached to the dosing control unit as dosing regulator (7). The hydrocarbon sensor is used as an actual value sensor, the dosing control unit as a dosing regulator, and the fuel supply device (5) as a setting member and the nitrogen oxide reducing catalyser as control path form one closed control circuit. Diesel fuel is added according to a recorded regulating algorithm as the reducing agent when the catalytic converter is hot in controlled amount to reduce the nitrogen oxides in dependence on the residual concentration of hydrocarbon measured after the catalytic converter. |
| format | Patent |
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The hydrocarbon sensor is used as an actual value sensor, the dosing control unit as a dosing regulator, and the fuel supply device (5) as a setting member and the nitrogen oxide reducing catalyser as control path form one closed control circuit. Diesel fuel is added according to a recorded regulating algorithm as the reducing agent when the catalytic converter is hot in controlled amount to reduce the nitrogen oxides in dependence on the residual concentration of hydrocarbon measured after the catalytic converter.</description><edition>7</edition><language>eng ; fre ; ger</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>2002</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=20021016&DB=EPODOC&CC=EP&NR=0881367B1$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,776,881,25542,76516</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20021016&DB=EPODOC&CC=EP&NR=0881367B1$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>ENGELER, WERNER</creatorcontrib><creatorcontrib>DUESTERDIEK, THORSTEN</creatorcontrib><title>Catalytic system for removing NOx from diesel engine exhaust gas</title><description>In the presence of hydrocarbons the catalytic converter acts as a nitrogen oxide reducing catalyser (4) whereby the sensor downstream of the catalyser is a hydrocarbon sensor (10) attached to the dosing control unit as dosing regulator (7). 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The hydrocarbon sensor is used as an actual value sensor, the dosing control unit as a dosing regulator, and the fuel supply device (5) as a setting member and the nitrogen oxide reducing catalyser as control path form one closed control circuit. Diesel fuel is added according to a recorded regulating algorithm as the reducing agent when the catalytic converter is hot in controlled amount to reduce the nitrogen oxides in dependence on the residual concentration of hydrocarbon measured after the catalytic converter.</abstract><edition>7</edition><oa>free_for_read</oa></addata></record> |
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| language | eng ; fre ; ger |
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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 | Catalytic system for removing NOx from diesel engine exhaust gas |
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