TY - JOUR TI - 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 AU - ERGENÇ, A.T. AU - ERGENÇ, A.F. AU - OLGUN, B. AU - RAVALI, F. JO - Sigma Journal of Engineering and Natural Sciences PY - 2015 VL - 33 SP - 665 EP - 676 DO - ER -