Direct injection diesel engines Combustion 2 Diesel engines 2 Direct injection 2 Air intakes 1 Air/fuel mixtures 1 Biofuels 1 Blending 1 Color 1 Combustion characteristics 1 Combustion pro-cess 1 Combustion temperatures 1 Compression ratio (machinery) 1 Computer software 1 Dynamics 1 Early injections 1 Emission control 1 Energy conservation 1 Engines 1 Environmental technology 1 Ethanol 1 Experimental installations 1 Flammability 1 Fuel combustion 1 Fuels 1 High temperature and pressure 1 Ignition delays 1 Injection compression 1 Injection durations 1 Injection parameters 1