Benajes Calvo, JV.; García Oliver, JM.; Novella Rosa, R.; Kolodziej, CP. (2012). Increased particle emissions from early fuel injection timing Diesel low temperature combustion. Fuel. 94(1):184-190. doi:10.1016/j.fuel.2011.09.014
Por favor, use este identificador para citar o enlazar este ítem: http://hdl.handle.net/10251/50955
Title:
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Increased particle emissions from early fuel injection timing Diesel low temperature combustion
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Author:
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Benajes Calvo, Jesus Vicente
García Oliver, José María
Novella Rosa, Ricardo
KOLODZIEJ, CHRISTOPHER PAUL
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UPV Unit:
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Universitat Politècnica de València. Instituto Universitario CMT-Motores Térmicos - Institut Universitari CMT-Motors Tèrmics
Universitat Politècnica de València. Departamento de Máquinas y Motores Térmicos - Departament de Màquines i Motors Tèrmics
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Issued date:
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Abstract:
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A clean premixed Diesel combustion strategy, called low temperature combustion (LTC), was able to achieve very low nitrogen oxide emissions (<35 ppm) through use of exhaust gas recirculation (12.1% inlet oxygen), and reduced ...[+]
A clean premixed Diesel combustion strategy, called low temperature combustion (LTC), was able to achieve very low nitrogen oxide emissions (<35 ppm) through use of exhaust gas recirculation (12.1% inlet oxygen), and reduced particulate matter (PM) emissions (<0.05 FSN) through advanced fuel injection timing (-24°aTDC). When varying the injection timing by relatively small increments, large changes in PM mass and number emissions were measured within the premixed LTC regime. A discrepancy is investigated between expected reductions in PM emissions by simple fuel-air premixing and combustion temperature metrics, and actual PM emissions measurements when advancing the fuel injection timing earlier than -24°aTDC. For these earlier injection timings, particle numbers were seen to increase in two distinct particle size modes, whereas only one particle size mode existed at the minimum PM emissions -24°aTDC injection timing. Additional parameters from a 1D free fuel spray model were used to suggest new information that could explain the cause of these unexpected increases in PM. Using 0D and 1D calculations, the engine-out particle size and number emissions are analyzed to better understand their sensitivity to changes in the fuel injection timing within the early injection timing LTC regime. © 2011 Elsevier Ltd. All rights reserved.
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Subjects:
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Diesel engine
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Emissions
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Low temperature combustion
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Particle
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Premixed
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Advanced fuels
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Combustion temperatures
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Diesel combustion
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Fuel injection timing
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Fuel sprays
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Injection timing
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Nitrogen oxide emissions
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Particle emissions
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Particle numbers
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Particulate matter emissions
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PM emissions
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Premixing
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Diesel engines
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Fuel injection
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Nitrogen oxides
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Particle size
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Particles (particulate matter)
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Particulate emissions
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Temperature
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Combustion
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Copyrigths:
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Reserva de todos los derechos
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Source:
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DOI:
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10.1016/j.fuel.2011.09.014
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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.fuel.2011.09.014
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Project ID:
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Generalitat Valenciana [GR001/2009/00167539]
Spanish Ministry of Education
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Thanks:
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The authors sincerely thank Gabriel Alcantarilla, Rogerio Jorge Amorim, Simon Arthozoul, and Sara Goska for their great assistance in experimental data collection and post-analysis. The authors wish to acknowledge the ...[+]
The authors sincerely thank Gabriel Alcantarilla, Rogerio Jorge Amorim, Simon Arthozoul, and Sara Goska for their great assistance in experimental data collection and post-analysis. The authors wish to acknowledge the Generalitat Valenciana for the financial support through the project GVA PROMETEO CMT 2010 (reference code: GR001/2009/00167539). Financial support of Christopher Kolodziej's research was provided by the Spanish Ministry of Education. This publication comes from a portion of the doctoral thesis work of Christopher Kolodziej.
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Type:
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Artículo
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