An Optical Engine Used as a Physical Model for Studies of the Combustion Process Applying a Two-Color Pyrometry Technique

Lis Corral-Gómez, Octavio Armas, José A. Soriano, José V. Pastor, José M. García-Oliver and Carlos Micó
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Lis Corral-Gómez: Universidad de Castilla-La Mancha, Campus de Excelencia Internacional en Energía y Medioambiente, Instituto de Investigación Aplicada a la Industria Aeronáutica, Escuela de Ingeniería Industrial y Aeroespacial, Av. Carlos III, s/n, 45071 Toledo, Spain
Octavio Armas: Universidad de Castilla-La Mancha, Campus de Excelencia Internacional en Energía y Medioambiente, Instituto de Investigación Aplicada a la Industria Aeronáutica, Escuela de Ingeniería Industrial y Aeroespacial, Av. Carlos III, s/n, 45071 Toledo, Spain
José A. Soriano: Universidad de Castilla-La Mancha, Campus de Excelencia Internacional en Energía y Medioambiente, Instituto de Investigación Aplicada a la Industria Aeronáutica, Escuela de Ingeniería Industrial y Aeroespacial, Av. Carlos III, s/n, 45071 Toledo, Spain
José V. Pastor: Universitat Politècnica de València, CMT-Motores Térmicos, Camino de Vera, s/n, 46022 Valencia, Spain
José M. García-Oliver: Universitat Politècnica de València, CMT-Motores Térmicos, Camino de Vera, s/n, 46022 Valencia, Spain
Carlos Micó: Universitat Politècnica de València, CMT-Motores Térmicos, Camino de Vera, s/n, 46022 Valencia, Spain

Energies, 2022, vol. 15, issue 13, 1-17

Abstract: This work describes an experimental installation for the investigation of the combustion and injection processes. This installation is based on a two-stroke direct injection diesel engine with a total displacement of 3 L and a cylinder head equipped with three quartz windows. The windows are optical accesses that allow studying the process of injection, the atomization and evaporation of the fuel jet in an inert atmosphere (nitrogen), and the combustion process in a reactive atmosphere (ambient air). Additionally, the application of a two-color pyrometry technique to measure soot formation in this facility is presented. A methodological study is carried out regarding the influence of the dynamic range of the detectors and the wavelengths used. Maps of KL 2 C , flame temperature, and error probability are presented. The use of cameras with high dynamic range provides better results since the system seems to be less sensitive to measurement noise, and fewer points are obtained with a non-physical solution. Moreover, an appropriate combination of interference filters can improve the reliability of the solution. The greater the difference between the wavelengths of both interference filters, the fewer points with a non-physical solution, which improves the reliability of results.

Keywords: optical engine; two-color pyrometry; combustion; injection processes; KL 2 C maps; soot formation (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2022
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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