TY - JOUR
TI - Effective utilization of B20 blend with diethyl ether and ethanol as oxygenated additives
AU - Satya Vara Prasad Upadrasta
AU - Kotha Madhu Murthy
AU - Rao Gaddale Amba Prasad
JN - Thermal Science
PY - 2011
VL - 15
IS - 4
SP - 1175
EP - 1184
PT - Article
AB - In the recent times' fatty acid methyl ester popularly called as biodiesel  has become more prominent alternate fuel for compression ignition engines  based on a single fuel concept. Since, use of neat biodiesel on a large  scale is raising certain difficulties and is being adopted in a blended form  with petro-diesel fuel and B20 blend has become standardized. However, the  HC and NOx emissions of B20 are still on the higher side. Present work aims  at experimental evaluation of a single cylinder water-cooled diesel engine  by adopting various proportions of ethanol and diethyl ether blends in  order to improve performance and emission characteristics of B20 blend.  Besides employing different amounts of ethanol and diethyl ether,  simultaneous influence of injector nozzle hole size and fuel injection  pressure are also investigated to arrive at an optimum configuration. Brake  specific fuel consumption and hydrocarbon emissions values are lower with  B20 and DEE 5 whereas B20 with DEE15 yielded lower NOx emissions. It is  observed that addition of oxygenates have improved the combustion process  and lower emissions are obtained. The present investigation revealed that  blends with oxygenated additives having higher Cetane rating are superior to  neat blend.