quotSTUDIES ON THE ENHANCEMENT OF DIESEL ENGINE COMBUSTION THROUGH THE USE OF FUEL ADDITIVES AND IN CYLINDER TURBULENCE INDUCEMENT TECHNIQUESquot

Abstract

quotOwing to direct injection (DI) diesel engines becoming acceptable choice as newlineprime movers in many applications, it has become imperative to improve their fuel newlineconsumption and emission characteristics. For this purpose, several attempts are ongoing newlineto improve the emission characteristics of DI diesel engines without having to sacrifice newlinetheir fuel consumption advantage. In diesel engines, fuel is injected near compression top newlinedead center and hence the requirements of fuel-air mixing are quite stringent. The fuel-air newlinemixing process therefore remains at the core of the diesel engine combustion and newlineemission problems. Beside better fuel-air mixing, the improvements in diesel engines are newlinealso possible through changes in fuel. newlineIn the present work, the changes in fuel and fuel-air mixing process are tested newlineindependently and together to improve diesel engine performance and emission newlinecharacteristics. A simpler method of producing in-cylinder turbulence has been arrived at newlineand investigated. The same has been combined with the best of the additives tested to newlineattain a significant decrease in fuel consumption and exhaust smoke concentration.quot newline newline