A comparison of waterdiesel emulsion and timed injection of water into the intake manifold of a diesel engine for simultaneous control of NO and smoke emissionsOriginal Research ArticleEnergy Conversion and ManagementDual fuel mode operation in diesel engines using renewable fuels: Rubber seed oil and coir-pith producer gasOriginal Research ArticleRenewable EnergyExperimental study of the performances of a modified diesel engine operating in homogeneous charge compressio