Performance and emission characteristics of a DI diesel engine operated with diesel/DEE blended fuel

Experimental results showed that highly stable engine operation was possible for blended fuels, and the fuel conversion efficiency was comparable to that of pure diesel. The combustion of DEE blended fuels produced less hydrocarbon (HC) and carbon monoxide (CO) emissions than diesel combustion over the entire engine load range. Particulate matter (PM) also decreased for blended fuels due to the high oxygen content of DEE. However, nitrogen oxides (NOx) from the blended fuels were higher than that of diesel over the entire engine load range of indicated mean effective pressures (IMEP) 0.2-0.8 MPa due to the shorter ignition delay and high oxygen content.