Combined impact of EGR and injection pressure in performance improvement and NOx control of a DI diesel engine powered with tamarind seed biodiesel blend

Combined impact of EGR and injection pressure in performance improvement and NOx control of a DI diesel engine powered with tamarind seed biodiesel blend

In the process of creating eco-friendly environment and conserving fossil fuels for the future generations, biodiesel has been chosen as a good substitute for diesel. It is a proven fact that biodiesel operated diesel engine can deliver comparable results with diesel. The present work focuses on TSM...

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Bibliographic Details
Published in:Environmental science and pollution research international Vol. 25; no. 36; pp. 36381 - 36393
Main Authors: Vallapudi, Dhana Raju, Makineni, Harun Kumar, Pisipaty, Srinivas Kishore, Venu, Harish
Format: Journal Article
Language:English
Published: Berlin/Heidelberg Springer Berlin Heidelberg 01-12-2018
Springer Nature B.V
Subjects:
Aquatic Pollution
Atmospheric Protection/Air Quality Control/Air Pollution
Biodiesel fuels
Biofuels
Carbon monoxide
Diesel
Diesel engines
Earth and Environmental Science
Ecotoxicology
Emission analysis
Emissions control
Environment
Environmental Chemistry
Environmental Health
Environmental science
Exhaust gases
Fossil fuels
Fuel injection
Injection
Nitrogen oxides
Peak load
Pressure
Product design
Renewable fuels
Research Article
Smoke
Tamarind
Trucking industry
Trucks
Waste Water Technology
Water Management
Water Pollution Control
Combustion characteristics
Injection pressure
Performance
Biodiesel
Emissions and exhaust gas recirculation
Tamarind seed methyl ester
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Summary:In the process of creating eco-friendly environment and conserving fossil fuels for the future generations, biodiesel has been chosen as a good substitute for diesel. It is a proven fact that biodiesel operated diesel engine can deliver comparable results with diesel. The present work focuses on TSME20 (tamarind seed methyl ester 20% + diesel 80%) as a renewable fuel, and its performance and emission results are analyzed at different exhaust gas recirculation rates and various injection pressures. The process is done in two stages. Firstly, experiments are conducted on TSME20 operated diesel engine at three injection pressures (180, 200, and 220 bar), and the results are analyzed. From the experimental results, improved efficiency by 2.29% and reduced emissions, such as hydrocarbon, smoke, and carbon monoxide, by 53.84, 56.25, and 75.15% are observed at the peak load for the increased injection pressure (220 bar) over 200 bar except NOx levels, which are found high by 11% compared to 200-bar injection pressure. Secondly, tests are again performed at the optimal condition of 220-bar injection pressure with the exhaust gas re-circulation (EGR) rates at different levels, i.e., 10 and 20%. The test results reveal that the addition of 10% EGR to the engine operating at 220 bar counteracts the release of NOx levels, which are found reduced by 80.5% over standard conditions without much compromise in engine performance. Also, the combustion characteristics of diesel engine at 220-bar fuel injection pressure of tamarind biodiesel blend showed enhancement when compared to other fuel injection pressures.
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ISSN:0944-1344
1614-7499
DOI:10.1007/s11356-018-3540-7