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The quality of fuel atomization in diesel engine, commonly represented by the mean drop size, is critical for fuel-air mixture, and for the rate of fuel evaporation and combustion. Poor quality fuel-air mixtures are a source of harmful exhaust gas components, such as nitrogen oxides and particulates. In spite of advanced technologies, mentioned components still are not eliminated from combustion products. The article presents the results of the impact of fuel pump delivery rate and fuel viscosity on the course of ...

Pongamia Pinnata oil has been considered as one of potential sources for commercial production of biodiesel in Pakistan. Undiluted Pongamia biodiesel has been tested in direct injection diesel engine at rated speed over the range of load. Test results have been compared with those of regular diesel fuel. With neat biodiesel brake fuel conversion efficiency has been slightly decreased and brake specific fuel consumption increased. Emissions of carbon monoxide and unburned hydrocarbons have been essentially unchange...