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Improving Cold Start and Transient Performance of Automotive Diesel Engine at Low Ambient Temperatures
ISSN: 0148-7191, e-ISSN: 2688-3627
Published April 05, 2016 by SAE International in United States
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Ambient temperature has significant impact on engine start ability and cold start emissions from diesel engines. These cold start emissions are accounted for substantial amount of the overall regulatory driving cycle emissions like NEDC or FTP. It is likely to implement the low temperature emissions tests for diesel vehicles, which is currently applicable only for gasoline vehicles. This paper investigates the potential of the intake heating strategy on reducing the driving cycle emissions from the latest generation of turbocharged common rail direct injection diesel engines at low ambient temperature conditions. For this investigation an air heater was installed upstream of the intake manifold and New European Driving Cycle (NEDC) tests were conducted at -7°C ambient temperature conditions for the different intake air temperatures. Intake air heating reduced the cranking time and improved the fuel economy at low ambient temperatures. Intake air temperatures of 5° and 15°C reduced HC emissions by 40% and 65%, and NOx by 8.5% and 10%, respectively compared to that of at -7°C in the first part of NEDC. The instantaneous emission values were almost close to each other during the later stages of the NEDC cycle and followed the similar trend. Relatively higher intake air temperatures, reduced the diameter and number count of particles and the particulates of 10-23 nm size is accounted for ∼45% for the all intake air temperature conditions. The particle number for the first part of NEDC was ∼25% of the total cycle for the intake air temperatures of -7°C and was reduced to ∼20% with intake air heating. The particulate mass for the first stage of the NEDC cycle was ∼20% of that of NEDC at -7 °C whereas it was reduced to 12-14% of that of NEDC at -7 °C with the intake air heating. The intake heating improved the engine cold start performance as well as reduced the gaseous and particulate emissions significantly over the NEDC at low ambient temperatures.
CitationRamadhas, A. and Xu, H., "Improving Cold Start and Transient Performance of Automotive Diesel Engine at Low Ambient Temperatures," SAE Technical Paper 2016-01-0826, 2016, https://doi.org/10.4271/2016-01-0826.
- SMMT, Car CO2 report 2013. 2013
- Payri, F., Broatch, A., Serrano, J., Rodríguez, L. et al., "Study of the Potential of Intake Air Heating in Automotive DI Diesel Engines," SAE Technical Paper 2006-01-1233, 2006, doi:10.4271/2006-01-1233.
- Chartier, C., Aronsson, U., Andersson, Ö., and Egnell, R., "Effect of Injection Strategy on Cold Start Performance in an Optical Light-Duty DI Diesel Engine," SAE Int. J. Engines 2(2):431-442, 2010, doi:10.4271/2009-24-0045.
- Korfer T., Lamping M., RohsH., AdolphD., PischiingerS., WixK.. “The future power density of HSDI diesel engines with lowest engine out emissions - A key element for upcoming CO2 demands” in Fisita. 2008
- Starck, L., Faraj, A., Perrin, H., Forti, L. et al., "Cold Start on Diesel Engines: Effect of Fuel Characteristics," SAE Int. J. Fuels Lubr. 3(2):165-174, 2010, doi:10.4271/2010-01-1506.
- https://turbo.honeywell.com/turbo-basics/the-downsizing-agenda/ (assessed on 12.12.2015)
- National Research Council. Assessment of Fuel Economy Technologies for Light-Duty Vehicles. Washington, DC: The National Academies Press, 2011
- B. Ag Last, B., Houben, D. H., Ba, D., & Rottner, M., “Influence of modern diesel cold start systems on the cold start, warm-up and emissions of diesel engines”. www.beru.com, 2010.
- Lindl, B. and Schmitz, H., "Cold Start Equipment for Diesel Direct Injection Engines," SAE Technical Paper 1999-01-1244, 1999, doi:10.4271/1999-01-1244.
- Sales, L., Carvalho, M., Oliveira, F., and Sodre, J., "Improving Cold Start Emissions from an Ethanol-Fuelled Engine through an Electronic Gasoline Injector," SAE Technical Paper 2010-01-2131, 2010, doi:10.4271/2010-01-2131.
- Shibata, G. and Urushihara, T., "The Interaction Between Fuel Chemicals and HCCI Combustion Characteristics Under Heated Intake Air Conditions," SAE Technical Paper 2006-01-0207, 2006, doi:10.4271/2006-01-0207.
- Broatch A., Luján J.M., Serrano J.R., PlaB., “A procedure to reduce pollutant gases from Diesel combustion during European MVEG-A cycle by using electrical intake air-heaters”, Fuel, Vol. 87: p. 2760-2778., 2008
- Beru, Technical information no 1. Cold start aids for commercial vehicles, http://www.beru.com/download/produkte/TI01_en.pdf, assessed on 11th Dec 2015.
- Andrews, G., Zhu, G., Li, H., Simpson, A. et al., “The Effect of Ambient Temperature on Cold Start Urban Traffic Emissions for a Real World SI Car,” SAE Technical Paper 2004-01-2903, 2004, doi:10.4271/2004-01-2903.
- Peiyong Ni, X.W., Wei Shengli, “Effects of intake air temperature on SI engine emissions during a cold start”, International Journal of Sustainable Energy, 2011.
- Oberdörster G., Oberdörster J.. “Nanotoxicology: An Emerging Discipline Evolving from Studies of Ultrafine Particles”. Environmental Health Perspective Environ, Vol. 113: p. 823-839, 2005
- Commission, E., Implementing and amending Regulation (EC) N. 715/2007 of the European Parliament and of the Council on type-approval of motor vehicles with respect to emissions from light passenger and commercial vehicles (Euro 5 and Euro 6) and on access to vehicle repair and maintenance information. July 18, 2008.
- De Filippo, A., Ciaravino, C., Millo, F., Vezza, D. et al., "Particle Number, Size and Mass Emissions of Different Biodiesel Blends Versus ULSD from a Small Displacement Automotive Diesel Engine," SAE Technical Paper 2011-01-0633, 2011, doi:10.4271/2011-01-0633.
- Tian, J., Xu, H., Arumugam Sakunthalai, R., Liu, D. et al., "Low Ambient Temperature Effects on a Modern Turbocharged Diesel engine running in a Driving Cycle," SAE Int. J. Fuels Lubr. 7(3):726-736, 2014, doi:10.4271/2014-01-2713.
- Weilenmann M., Favez, R. Alvarez, “Cold-start emissions of modern passenger cars at different low ambient temperatures and their evolution over vehicle legislation categories”. Atmospheric Environment, 43(15): p. 2419-2429, 2009
- Weilenmann M. et al., “Regulated and non-regulated diesel and gasoline cold start emissions at different temperatures” Atmospheric Environment, 39(13): p. 2433-2441, 2005
- Dardiotis C. et al., Extension of low temperature emission test to Euro 6 diesel vehicles. JRC Report, 2012
- Srivastava D.K., Agarwal A.K., Gupta Tarun, “Effect of Engine Load on Size and Number Distribution of Particulate Matter Emitted from a Direct Injection Compression Ignition Engine”. Aerosol and Air Quality Research, Vol. 11: p. 915-920, 2011
- Peckham, M., Finch, A., Campbell, B., Price, P. et al., "Study of Particle Number Emissions from a Turbocharged Gasoline Direct Injection (GDI) Engine Including Data from a Fast-Response Particle Size Spectrometer," SAE Technical Paper 2011-01-1224, 2011, doi:10.4271/2011-01-1224.