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Performance Analysis of Engine down Speeding in Emission & Fuel Economy
Technical Paper
2017-28-1921
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
Engine down speeding is rapidly picking up momentum in many segment of world market. Numerous engine down speeding packages from OEM have been tailored to take advantage of the increased efficiencies associated with engine down speeding. Running engine at lower rpm has numerous advantages. The most obvious of these is reduced fuel consumption, since the engine can spend more time running within its optimum efficiency range. By down speeding, the engine is made to run at low speeds and with high torques. For the same power, the engine is operated at higher specific load- Brake Mean Effective pressure (BMEP) which results in higher efficiency and reduced fuel consumption-Brake Specific Fuel Consumption (BSFC). The reasons for increased fuel efficiency are reduced engine friction due to low piston speeds, reduced relative heat transfer and increased thermodynamic efficiency. In the ever increasing demand for further advantage in efficiency and to decrease the emission levels of the internal combustion engines an attempt is made in this experimental work to study down speeding in light commercial engine. The detailed test results along in performance and emissions shows the behavior of down speeding in 3.77 lts. of engine tested during the development activities.
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Barman, J., "Performance Analysis of Engine down Speeding in Emission & Fuel Economy," SAE Technical Paper 2017-28-1921, 2017, https://doi.org/10.4271/2017-28-1921.Data Sets - Support Documents
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References
- Mayer , A. , Schruf , G. , and Kirchhofer , H. Downsizing and Downspeeding of Automotive Diesel Engines-Theory and Practice SAE Technical Paper 820443 1982 10.4271/820443
- Keidel , S. , Wetzel , P. , Biller , B. , Bevan , K. et al. Diesel Engine Fuel Economy Improvement Enabled by Supercharging and Downspeeding SAE Int. J. Commer. Veh. 5 2 483 493 2012 10.4271/2012-01-1941
- Koeberlein D. 2012 Cummins SuperTruck Program: Technology and system level demonstration of highly efficient and clean, diesel powered Class 8 trucks
- Lee , B. , Filipi , Z. , Assanis , D. , and Jung , D. Simulation-based Assessment of Various Dual-Stage Boosting Systems in Terms of Performance and Fuel Economy Improvements SAE Int. J. Engines 2 1 1335 1346 2009 10.4271/2009-01-1471
- Assessment of fuel economy technologies for medium- and heavy-duty vehicles Report to the National Academy of Sciences Cambridge, MA TIAX, LLC (TIAX) 2009
- Technologies and approaches to reducing the fuel consumption of medium- and heavy-duty vehicles Washington, DC National Research Council (NRC) 2010 Conference
- Heywood , J. B. Internal Combustion Engine McGraw-Hill Publishing Company New York 1988