Highlights:Graphical/TabularAbstract The use of cottonseed oil methyl ester (COME) and eurodiesel fuel blends in a direct-injection diesel engine Diesel engine performance and exhaust emissions of COME and eurodiesel fuel blends Combustion characteristics in diesel engines using COME blendsIn this study, the effect of cottonseed oil methyl ester addition in eurodiesel fuel on the combustion, performance, and exhaust emissions of a direct injection single-cylinder diesel engine was investigated. Table A shows the injection and combustion behavior of all fuels for different engine loads at engine speed of 1500 rpm. Table A. Injection and combustion characteristics of the test fuels for different loadsPurpose: This experimental study aims to investigate the effect of cottonseed oil methyl ester addition in eurodiesel fuel on the combustion, performance, and exhaust emissions of a direct injection single-cylinder diesel engine.
Theory and Methods:Cottonseed methyl ester was mixed with the eurodiesel (PYME0) in 10%, 20% and 50% and called PYME10, PYME20 and PYME50, respectively. The tests were carried out under variable engine brake torque of 2.5 Nm, 5 Nm, 7.5 Nm and 10 Nm at engine speed of 1500 rpm.
Results:The ignition delay of the cottonseed oil methyl ester mixtures was longer than the eurodiesel. The heat release rate of cottonseed oil methyl ester mixtures is higher than the eurodiesel. Eurodiesel has the lowest specific fuel consumption and highest thermal efficiency compared to cottonseed oil methyl ester mixtures for all engine loads. Cottonseed oil methyl ester addition causes a slight increase in NOx emissions while causing a decrease in smoke and CO emissions, HC emissions were observed to low values
Conclusion:The cottonseed oil methyl ester can be used up to 50% without any modifications at the engine