A study on the measurement of temperature and soot in a constant-volume chamber and a visualized diesel engine using the two-color method

Abstract

In this study, the measurements of soot and temperature were used to investigate the turbulent diesel diffusion flame in a constant-volume chamber and a visualized direct injection (D.I.) diesel engine using the two-color method and a high-speed camera. Through these experiments, we effectively acquired information on the temperature and soot by the two-color method in a turbulent diesel diffusion flame. In addition, this experiment revealed that the KL factor was high on the parts of the chamber where the temperature dropped. On the other hand, the KL factor was low where the temperature increased rapidly. Also, the highest temperatures of the flame in a constant-volume chamber and in a D.I. diesel engine were approximately 2300K and 2400K, respectively. This study suggests the measurement of not only the temperature but also the soot of a diffusion flame of the diesel engine through an optical methodology.

Current Trends in Water-in-Diesel Emulsion as a Fuel

“…Usually the amount introduced in the emulsion process is in the range of 0.5–5% by volume ratio. The most common surfactants used in the water-in-diesel emulsion are sorbitan monooleate [ 9 , 17 , 30 , 32 ] and polyethylene glycol sorbitan monooleate mixture [ 13 , 24 , 57 , 58 ], polyethylene glycol sorbitan monooleate (polysorbate 80) and sorbitol sesquioleate (SSO) mixture [ 22 ], sorbitan monolaurate [ 27 ], gemini [ 32 ], polyoxyethylene nonylphenyl ether [ 15 , 59 , 60 ] solgen 40 and noigen TDS-30 (dai-ichi kogyo seiyaku) [ 16 ], polysorbate 20 (commercially known as tween 20) [ 33 ], detergent/liquid soap [ 21 , 61 ], and t-octylphenoxy polyethoxy ethanol.…”

Refinement of the two-color pyrometry method for application in a direct injection diesel and natural gas compression-ignition engine

“…The integrating sphere was selected over commonly used tungsten-ribbon lamps, 13,15 as the latter provides a small calibration target (1.6 3 20 mm), 13 with only slightly higher spectral radiant intensity levels (;5e3 vs 8e3 W/m 2 srÁmm). Other lower intensity light sources have also been used, including tungsten filament light sources, 10,14,44 and low-intensity blackbody sources. 11,14 Pyrometry standards typically require extrapolation to combustion relevant intensities, 10,11,[13][14][15]44 and lowintensity sources will require more significant extrapolation.…”

“…Other lower intensity light sources have also been used, including tungsten filament light sources, 10,14,44 and low-intensity blackbody sources. 11,14 Pyrometry standards typically require extrapolation to combustion relevant intensities, 10,11,[13][14][15]44 and lowintensity sources will require more significant extrapolation. An extrapolation approach similar to Jakob et al 15 is used, whereby the sensor response is linearized to facilitate extrapolation.…”

Multi-spectral pyrometry—a review

“…Practical implementations of multispectral pyrometry include the measurement of surface temperature and/or emis sivity of different processes and applications, such as wire drawing [23], welding operations [24][25][26][27][28], heat treatment processes [29,30], metal removal processes [18,[31][32][33][34][35], laser melting processes [36,37], braking temperature moni toring [38][39][40], temperature monitoring of gas turbine blades [41][42][43][44][45], and seawater surface temperature measurements [46]. Another important application is the analysis of combustion processes in diesel engines through the measurement of the temperature and/or concentration of soot [47][48][49][50][51][52][53].…”