During the last decade extensive research has been made at Lund University, Sweden, on a lean premix (prevaporize) combustion concept with burnt gas recirculation and a metallic flame holder. From this concept a new lean premixed natural gas combustion chamber with internal combustion gas recirculation (CGR) has been developed for the V160/SOLO 161 Stirling engines. This combustor has ultra-low...

ethanol as a renewable and alternative fuel when utilized in homogeneous charge compression ignition (hcci) has potential to substantially reduce nitrogen oxides (nox) and particle matter (pm) and can maintain hcci sustainability. hcci engine operation is limited between two ringing and misfire regions that too retard and advance combustion phasing highly affect hcci engine operation, performan...

This thesis addresses the problem of combustion control for automotive engines. A method is proposed to complement existing controllers, which use lookup tables based on steady-state operation. During transients, the new control method adjusts fast control variables (ignition or injection time) to compensate for deviations in the cylinder initial conditions from their optimal values due to the ...

In this study, we performed a comparative analysis of the combustion behavior pyrite, pyrrhotite, and pyrite-pyrrhotite mixture (mixed mineral) powders in an air atmosphere. To study influence pyrrhotite content mixed mineral on air, thermogravimetric mass spectrometry, X-ray diffraction analysis, scanning electron microscopy were employed. The results indicated that lead to weight gain mineral...