An experimental study of the effects of diluent (nitrogen) injection into the near-nozzle region of a Liquid (kerosene) spray flame produced from a twin-fluid atomizer is presented. The primary variable in this study is the diluent injection rate. Measurements include visible flame length, radiative fraction of heat release, axial temperature profiles, radial profiles of temperature and concentrations of carbon monoxide, oxygen, nitric oxide and soot in the far-nozzle region. Results indicate that (i) the visible flame length and radiative fraction of heat release decrease, flame temperature level increases, nitric oxide concentration increases and soot/carbon monoxide emissions decrease when diluent is injected at a rate approximately equal to the atomizing air flow rate and (ii) a further increase in rate of diluent injection does not result in proportionate amounts of changes.