The investigation of soot and temperature distributions in a visualized direct injection diesel engine using laser diagnostics

Based upon the method of temperature calibration using the diffusion flame, the temperature and soot concentrations of the turbulent flame in a visualized diesel engine were qualitatively measured. Two different cylinder heads were used to investigate the effect of swirl ratio within the combustion chamber. From this experiment, we find that the highest flame temperature of the non-swirl head engine is approximately 2400 K and that of the swirl head engine is 2100 K. In addition, as the pressure of fuel injection increases, the in-cylinder temperature increases due to the improved combustion of a diesel engine. This experiment represented the soot quantity in the KL factor and revealed that the KL factor was high when the fuel collided with the cylinder wall. Moreover, the KL factor was also high in the area of the chamber where the temperature dropped rapidly.

[1]  P. A. Bonczyk.  Suppression of soot in flames by alkaline-earth and other metal additives , 1988 .

[2]  Juha Vattulainen,et al.  A system for quantitative imaging diagnostics and its application to pyrometric in-cylinder flame-temperature measurements in large diesel engines , 2000 .

[3]  Toshio Nakahira,et al.  An image analysis of high speed combustion photographs for D.I. diesel engine with high pressure fuel injection , 1990 .

[4]  C. Law,et al.  Dilution and Temperature Effects of Inert Addition on Soot Formation in Counterflow Diffusion Flames , 1988 .

[5]  S. D. Stasio,et al.  Influence of the soot property uncertainties in temperature and volume-fraction measurements by two-colour pyrometry , 1994 .

[6]  Y. Manheimer-Timnat,et al.  Sooting Behavior of Gaseous Hydrocarbon Diffusion Flames and the Influence of Additives , 1980 .

[7]  I. M. Miller,et al.  High pressure flame system for pollution studies with results for methane-air diffusion flames , 1977 .

[8]  M. Lapuerta,et al.  Thermogravimetric analysis of diesel particulate matter , 2007 .

[9]  Ö. Gülder.  Soot formation in laminar diffusion flames at elevated temperatures , 1992 .

[10]  Kihyung Lee,et al.  Quantitative measurements of soot particles in a laminar diffusion flame using a LII/LIS technique , 2005 .

[11]  H. C. Hottel,et al.  Determination of True Temperature and Total Radiation from Luminous Gas Flames , 1932 .

[12]  Jürgen Warnatz,et al.  The structure of laminar alkane-, alkene-, and acetylene flames , 1981 .

[13]  C. Dasch,et al.  One-dimensional tomography: a comparison of Abel, onion-peeling, and filtered backprojection methods. , 1992, Applied optics.

[14]  J. M. Pastor,et al.  Contribution to the application of two-colour imaging to diesel combustion , 2007 .