%0 Journal Article %T Design of a diesel engine control system to change the number of injection and the effects of multi phase injection on nox emission levels and the performance %A ERGENÇ, A.T. %A ERGENÇ, A.F. %A OLGUN, B. %A RAVALI, F. %J Sigma Journal of Engineering and Natural Sciences %D 2015 %V 33 %P 665-676 %R