The amount of Diesel (DI) that can be replaced by Natural Gas (NG) in turbocharged Diesel vehicles converted to dual operation and under urban traffic conditions is determined by the rapid changes of engine loads, which also limits the thermodynamic performance of turbochargers. Turbochargers control the air flow that enters to the engine at every single moment of its operation, and therefore supplies the Oxygen (O2) required for burning the fuels involved in the combustion process. This investigation models the energy consumption of a diesel engine operating in dual fuel mode in urban traffic conditions of Barranquilla, Colombia. This model is based on experimental studies of transient states of Turbocharged Diesel Engines and on recent research relating to the conversion of diesel engines to dual mode. Due to the absence of a standard test cycle for the city, this investigation uses a common driving behavior profile registered in 2006 with an urban bus Chevrolet B-70 with a Caterpillar 3126 Engine. It was determined that the greater replacement percentage was about 85% at maximum load and at cruising speeds, due to the air flow supplied by the compressor. The opposite effect was found at transient states; the absence of air is because of the turbocharger performance when the vehicle is leaving the stand-by condition.
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ASME 2008 2nd International Conference on Energy Sustainability collocated with the Heat Transfer, Fluids Engineering, and 3rd Energy Nanotechnology Conferences
August 10–14, 2008
Jacksonville, Florida, USA
Conference Sponsors:
- Advanced Energy Systems Division and Solar Energy Division
ISBN:
978-0-7918-4319-2
PROCEEDINGS PAPER
Diesel Replacement Model for Dual Diesel-Natural Gas Engines Under Urban Traffic Operation Available to Purchase
Fabio A. Bermejo,
Fabio A. Bermejo
Universidad del Norte, Barranquilla, Colombia
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Lesme A. Corredor
Lesme A. Corredor
Universidad del Norte, Barranquilla, Colombia
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Fabio A. Bermejo
Universidad del Norte, Barranquilla, Colombia
Lesme A. Corredor
Universidad del Norte, Barranquilla, Colombia
Paper No:
ES2008-54286, pp. 489-496; 8 pages
Published Online:
June 22, 2009
Citation
Bermejo, FA, & Corredor, LA. "Diesel Replacement Model for Dual Diesel-Natural Gas Engines Under Urban Traffic Operation." Proceedings of the ASME 2008 2nd International Conference on Energy Sustainability collocated with the Heat Transfer, Fluids Engineering, and 3rd Energy Nanotechnology Conferences. ASME 2008 2nd International Conference on Energy Sustainability, Volume 1. Jacksonville, Florida, USA. August 10–14, 2008. pp. 489-496. ASME. https://doi.org/10.1115/ES2008-54286
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