Bermúdez, V.; Luján, JM.; Pla Moreno, B.; Linares Rodríguez, WG. (2011). Effects of low pressure exhaust gas recirculation on regulated and unregulated gaseous emissions during NEDC in a light-duty diesel engine. Energy. 36(9):5655-5665. doi:10.1016/j.energy.2011.06.061
Por favor, use este identificador para citar o enlazar este ítem: http://hdl.handle.net/10251/74559
Title:
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Effects of low pressure exhaust gas recirculation on regulated and unregulated gaseous emissions during NEDC in a light-duty diesel engine
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Author:
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Bermúdez, Vicente
Luján, José M.
Plá Moreno, Benjamín
Linares Rodríguez, Waldemar Gregorio
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UPV Unit:
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Universitat Politècnica de València. Escuela Técnica Superior de Ingenieros Industriales - Escola Tècnica Superior d'Enginyers Industrials
Universitat Politècnica de València. Escuela Técnica Superior de Ingeniería del Diseño - Escola Tècnica Superior d'Enginyeria del Disseny
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Issued date:
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Abstract:
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Regulated and unregulated gaseous emissions with high pressure and low pressure EGR (exhaust gas recirculation) system were tested in a 4-cylinder, light-duty diesel EURO IV engine typically used in European vehicles. Four ...[+]
Regulated and unregulated gaseous emissions with high pressure and low pressure EGR (exhaust gas recirculation) system were tested in a 4-cylinder, light-duty diesel EURO IV engine typically used in European vehicles. Four different engine calibrations with the low pressure EGR system were studied. Regulated emissions of NOX, CO, HC and CO2 were measured for each configuration. Unburned Hydrocarbon Speciation, HCHO (formaldehyde), HCOOH (formic acid) and N2O (nitrous oxide) were also measured in order to determine the MIR (maximum incremental reactivity) of the gaseous emissions. Pollutants were measured without the DOC (diesel oxidation catalyst) to gather data about raw emissions. When the low pressure EGR system was used, decreases in NOX, N2O and fuel consumption were observed and significant increases HC, CO and unregulated emissions; this is the result of a lower intake manifold temperature, which provides a higher gas density which modifies the combustion process. The potential of tropospheric ozone production was higher in all cases when the low pressure EGR was used. © 2011 Elsevier Ltd.
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Subjects:
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Hydrocarbons speciation
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Low pressure EGR
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New European Driving Cycle
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Nitrous oxide emission
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Non-regulated emissions
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Combustion pro-cess
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Diesel oxidation catalyst
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Engine calibration
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EURO IV engines
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Gas density
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High pressure
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Intake manifold
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Light-duty
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Low pressures
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Maximum incremental reactivities
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New european driving cycles
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Nitrous oxide
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Regulated emissions
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Tropospheric ozone
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Unburned hydrocarbons
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Unregulated emissions
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Anesthetics
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Carbon dioxide
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Density of gases
,
Diesel engines
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Engine cylinders
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Exhaust gas recirculation
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Exhaust gases
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Formic acid
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High pressure effects
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Hydrocarbons
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Nitrogen oxides
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Ozone
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Gas emissions
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Atmospheric pollution
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Calibration
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Carbon monoxide
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Catalyst
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Combustion
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Data set
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Diesel engine
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Emission inventory
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Exhaust emission
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Formaldehyde
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Fuel consumption
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Gas flow
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Low pressure
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Oxidation
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Pollution monitoring
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Speciation (chemistry)
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Troposphere
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Copyrigths:
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Reserva de todos los derechos
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Source:
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Energy. (issn:
0360-5442
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DOI:
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10.1016/j.energy.2011.06.061
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Publisher:
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Elsevier
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Publisher version:
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http://dx.doi.org/10.1016/j.energy.2011.06.061
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Type:
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Artículo
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