Payri González, F.; Olmeda González, PC.; Guardiola García, C.; Martín Díaz, J. (2011). Adaptive determination of cut-off frequencies for filtering the in-cylinder pressure in diesel engines combustion analysis. Applied Thermal Engineering. 31:2869-2876. https://doi.org/10.1016/j.applthermaleng.2011.05.012
Por favor, use este identificador para citar o enlazar este ítem: http://hdl.handle.net/10251/56966
Title:
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Adaptive determination of cut-off frequencies for filtering the in-cylinder pressure in diesel engines combustion analysis
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Author:
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Payri González, Francisco
Olmeda González, Pablo Cesar
Guardiola García, Carlos
Martín Díaz, Jaime
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UPV Unit:
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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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[EN] In-cylinder pressure analysis is a key tool for engine research and diagnosis and it has been object of study from the beginning of the internal combustion engines. One of its most useful application is combustion ...[+]
[EN] In-cylinder pressure analysis is a key tool for engine research and diagnosis and it has been object of study from the beginning of the internal combustion engines. One of its most useful application is combustion analysis on the basis of the First Law of Thermodynamics. However, heat release law calculations use the in-cylinder pressure derivative signal. Hence, the noise is increased and pressure filtering becomes necessary to remove high frequency noise, thus allowing for accurate combustion analyses. In this work, a methodology to set the cut-off frequency of a low-pass filter is proposed. Statistical criteria are used to separate the signal from the noise through the calculation of the Discrete Fourier Transform of several consecutive in-cylinder pressures cycles. Thus, only physically meaningful information is preserved. The proposed methodology is compared with some adaptive and non-adaptive algorithms used to select the cut-off frequencies, and it shows a good ability to adapt to different engine operating conditions. © 2011 Elsevier Ltd. All rights reserved.
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Subjects:
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Combustion analysis
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Diesel engines
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In-cylinder pressure
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Signal filtering
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Cut-off
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Engine operating conditions
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Engine research
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First law of thermodynamics
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Heat release
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High-frequency noise
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In-cylinder pressure analysis
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Nonadaptive algorithm
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Pressure derivatives
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Statistical criterion
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Adaptive algorithms
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Combustion
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Discrete Fourier transforms
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Engine cylinders
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Engines
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Low pass filters
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Signal filtering and prediction
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Thermodynamics
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Copyrigths:
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Reserva de todos los derechos
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Source:
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Applied Thermal Engineering. (issn:
1359-4311
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DOI:
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10.1016/j.applthermaleng.2011.05.012
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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.applthermaleng.2011.05.012
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Project ID:
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info:eu-repo/grantAgreement/UPV//PAID-06-09/
info:eu-repo/grantAgreement/GVA//GV%2F2010%2F045/
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Thanks:
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The authors thank the Universidad Politécnica de Valencia (PAID-06-09) and Generalitat Valenciana (GV/2010/045) for its valuable support to this work.
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Type:
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Artículo
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