A preheated premixed CH 4 /air jet flame was operated in an optically accessible rectangular combustion chamber order to study the stabilization and expansion mechanisms. Due off-center position of jet, a pronounced lateral recirculation zone had formed which stabilized lifted by mixing burned unburned gases shear layer. Simultaneous single shot measurements flow field particle image velocimetr...

The paper shows a test results of single cylinder, direct injected, self ignited dual fuel engine. One has analysed a combustion parameters calculated on base of recorded indicator diagrams. The comparison included: the ignition delay period, the cylinder pressure, the rate of pressure rise, the average medium temperature, the heat release rate, the total combustion time and the indicated effic...

Fundamental experiments and direct numerical simulations indicate that reaction rates during the ignition delay of direct-injection, stratified charge mixtures are determined by both chemical reaction and mixing rates. Consequently, the commonly used, purely chemistry-dependent approach for predicting ignition is no longer valid when the mixing rate limits the reaction rates. This work proposes...