Toluene laser-induced fluorescence for in-cylinder temperature imaging in internal combustion engines

Luong, Mui Viet; Zhang, R.; Schulz, Christof; Sick, Volker

doi:10.1007/s00340-008-2995-5

Cited by 89 publications

(29 citation statements)

References 16 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Thurber et al [5] inferred temperature fields from the fluorescence signal by accounting for absorption phenomena and temperature effects. In-cylinder temperature imaging was also applied to the study of an IC engine, using toluene fluorescence at a single excitation wavelength and twocolour detection [6] , and using 3-pentanone [7], [8]. Löffler et al [9] used acetone with the dual excitation wavelength technique, at 308/277 nm and 308/248 nm.…”

Section: Introductionmentioning

confidence: 99%

Temperature measurements in a rapid compression machine using anisole planar laser-induced fluorescence

Tran¹,

Guibert

Morin

et al. 2015

Combustion and Flame

View full text Add to dashboard Cite

, et al.. Temperature measurements in a rapid compression machine using anisole planar laser-induced fluorescence. Combustion and Flame, Elsevier, 2015, 162, pp.3960 -3970. <10.1016/j.combustflame.2015 AbstractAdvanced combustion processes induced by self-ignition mechanisms in piston engines, such as Homogeneous Charge Compression Ignition (HCCI), especially need an accurate spatio-temporal temperature information because their phenomenology therefore their performances highly depend on the thermal conditions. The objective of this study is to measure the temperature distribution inside a rapid compression machine (RCM) using anisole planar laser induced fluroescence. The present paper gives a new insight into the interpretation of RCM autoignition data. It also brings useful information for kinetics-related combustion research and combustion modeling. The anisole planar laser-induced fluorescence (PLIF) technique is applied, in order to observe the formation and the evolution of temperature heterogeneities in the combustion chamber prior to the autoignition process. Anisole is used as a novel tracer species, and the fluorescence signal's dependence on parameters, such as temperature, pressure and bath gas composition, is quantified in a high-pressure, high-temperature facility. Calibration of the fluorescence signal is defined under RCM-related temperature and pressure conditions and a protocol is proposed for postprocessing of the PLIF image sequences, allowing the quantitative field temperatures to be determined at successive instants following compression. In order to gain a better understanding of the mixture process, Particle Image Velocimetry (PIV) measurements are analysed under the same conditions. The correlation between thermal and aerodynamic phenomena is determined. The temperature field is found to be non-uniform, with hot and cold centre positions resulting from recirculation inside the chamber, combined with heat transfer effects from the chamber wall.

show abstract

Section: Introductionmentioning

confidence: 99%

Temperature measurements in a rapid compression machine using anisole planar laser-induced fluorescence

Tran¹,

Guibert

Morin

et al. 2015

Combustion and Flame

View full text Add to dashboard Cite

show abstract

“…One technique which is commonly used to determine these quantities is laser-induced fluorescence (LIF), as it offers the possibility of 2D measurements with a high signal-to-noise ratio. To determine the concentration and temperature profiles inside combustion engines, fluorescence-tracers like acetone, 3-pentanone or toluene are usually added to the air or fuel supply [1][2][3][4][5][6][7][8]. For reproducible quantitative measurements, calibration data in a cell at defined temperature and pressure referring to the condition of the respective application are required.…”

Section: Introductionmentioning

confidence: 99%

Application of linear Raman spectroscopy for the determination of acetone decomposition

Eichmann¹,

Trost²,

Seeger³

et al. 2011

Opt. Express

View full text Add to dashboard Cite

Acetone (CH 3 ) 2 CO is a common tracer for laser-induced fluorescence (LIF) to investigate mixture formation processes and temperature fields in combustion applications. Since the fluorescence signal is a function of temperature and pressure, calibration measurements in high pressure and high temperature cells are necessary. However, there is a lack of reliable data of tracer stability at these harsh conditions for technical application. A new method based on the effect of spontaneous Raman scattering is proposed to analyze the thermal stability of the tracer directly in the LIF calibration cell. This is done by analyzing the gas composition regarding educts and products of the reaction. First measurements at IC engine relevant conditions up to 750 K and 30 bar are presented. ©2011 Optical Society of America

show abstract

“…Laser-induced fluorescence (LIF) allows spatially resolved measurements of temperature and air-fuel ratios but requires sufficient optical access. Additionally, LIF experiments are very time-consuming, need thorough preparation, including a careful selection of a fluorescent tracer molecule, and often do not allow real-time measurements (Luong et al, 2008;Schulz and Sick, 2005). Another laser-based detection technique employs the 3.392 µm emission of a He-Ne laser to determine fuel concentrations from absorption measurements.…”

Section: Introductionmentioning

confidence: 99%

Quantitative, time-resolved detection of CH<sub>4</sub> concentrations in flows for injection analysis in CNG engines using IR absorption

Bauke

Golibrzuch

Rotter

et al. 2017

J. Sens. Sens. Syst.

View full text Add to dashboard Cite

Abstract. The reduction of CO 2 and other greenhouse gas emissions is an important driving force for the development of modern engines. Especially in the transport sector, the use of alternative fuels like methane, the main component of compressed natural gas (CNG), is an applied measure to achieve this goal. This work describes the development of an optical measurement system for accurate quantification of CH 4 densities in gas flows based on broadband absorption of infrared light, i.e. non-dispersive IR absorption spectroscopy (NDIR). We demonstrate the capability of the system to achieve high time resolution as well as high measurement accuracy and precision. The optical set-up of the system is designed for usage at the inlet manifold of CNG-fuelled spark ignition engines. It allows for detailed analysis of the mixture formation during single engine cycles. CH 4 densities can be determined by monitoring the infrared light attenuation around 3.3 µm caused by the ν 3 antisymmetric C-H-stretch vibration. We calculate the nonlinear relation between transmittance and CH 4 density from absorption cross sections calculated from the HITRAN database. The theoretical transmittance signals are corrected for spectral influences of the bandpass filter, the detector sensitivity, the fibre transmittance and the emission spectrum of the light source in order to calculate CH 4 densities directly from the measured transmittance. A calibration function corrects remaining differences between experimental and simulated values and improves the accuracy. We show that the sensor system is capable for determination of air-fuel ratios (λ-values) and demonstrate the dynamic quantification of a CH 4 injection into a flow channel under various flow conditions. Furthermore, we present the first measurements with a prototype probe capable of measurements inside the inlet manifold of a four-stroke spark ignition engine. We validate the detection strategy in experiments with premixed gases using a modified inlet geometry and demonstrate its application under standard engine operation with port fuel injection while varying the injection parameters.

show abstract

Toluene laser-induced fluorescence for in-cylinder temperature imaging in internal combustion engines

Cited by 89 publications

References 16 publications

Temperature measurements in a rapid compression machine using anisole planar laser-induced fluorescence

Temperature measurements in a rapid compression machine using anisole planar laser-induced fluorescence

Application of linear Raman spectroscopy for the determination of acetone decomposition

Quantitative, time-resolved detection of CH<sub>4</sub> concentrations in flows for injection analysis in CNG engines using IR absorption

Contact Info

Product

Resources

About

Toluene laser-induced fluorescence for in-cylinder temperature imaging in internal combustion engines

Cited by 89 publications

References 16 publications

Temperature measurements in a rapid compression machine using anisole planar laser-induced fluorescence

Temperature measurements in a rapid compression machine using anisole planar laser-induced fluorescence

Application of linear Raman spectroscopy for the determination of acetone decomposition

Quantitative, time-resolved detection of CH&lt;sub&gt;4&lt;/sub&gt; concentrations in flows for injection analysis in CNG engines using IR absorption

Contact Info

Product

Resources

About

Quantitative, time-resolved detection of CH<sub>4</sub> concentrations in flows for injection analysis in CNG engines using IR absorption