In this paper, the effect of gasoline fumigation on the performance, emission, energy and exergy balance of a direct injection diesel engine is experimentally investigated. Gasoline fumigation is induced at three different ratios based on energy. In the present study, computer-controlled injection using LabVIEW software is attempted for gasoline fumigation and common rail is used to inject at the same pressure always. The characteristics of the engine are studied with and without fumigation. Results reveal that gasoline fumigation increases the energy and exergy efficiency to about 5% at medium and high loads. For all the operating points, the percentage of energy and exergy transfer through the exhaust gases decreases by an average of 2.6% using gasoline fumigation. Fumigation decreases diesel fuel consumption by 33.53%, CO2 emissions by 5.8%, NOx by 10.4% and smoke by 13–17% during full load at 30% of gasoline fumigation. Also, fumigation increases brake thermal efficiency by 3.78%, CO emissions from 0.2 to 0.96% by volume and UBHC emissions from 51 to 205 ppm during full load at 30% of gasoline fumigation. Results show that the gasoline fumigation replaces diesel and reduces both nitrogen oxides and smoke.
Diesel engine Fumigation Gasoline fumigation Electronic injection Energy and exergy Performance Emissions
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The authors acknowledge the infrastructure and testing support provided by Kongu Engineering College, Perundurai, Tamil Nadu, India, during the entire research work.
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