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Developing Low Gasoline Particulate Emission Engines Through Improved Fuel Delivery
Technical Paper
2014-01-2843
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
Particulate emissions are of growing concern due to health impacts. Many urban areas around the world currently have particulate matter levels exceeding the World Health Organisation safe limits. Gasoline engines, especially when equipped with direct injection systems, contribute to this pollution. In recognition of this fact European limits on particulate mass and number are being introduced. A number of ways to meet these new stringent limits have been under investigation. The focus of this paper is on particulate emissions reduction through improvements in fuel delivery.
This investigation is part of the author's ongoing particulate research and development that includes optical engine spray and combustion visualisation, CFD method development, engine and vehicle testing with the aim to move particulate emission development upstream in the development process. As part of this work, a spark eroded and a laser drilled injector were fully characterised in a spray vessel under key engine running conditions. Injector nozzle geometries and mass flow data were also measured in great detail.
This paper demonstrates using both steady state and transient engine testing that very significant improvements in particulate emissions can be made. Control strategies enabling multiple injections of smaller volumes of fuel per injection are the most promising technology. The MAHLE Flexible ECU (MFE) combined with injector testing allowed early stage development and demonstrated these effects for a number of key engine operating conditions. Most notably it was found that particulate matter emissions could be reduced by 80-90% during the catalyst light off phase. A new approach was developed (MASTER) to simultaneously assess the effects of calibration changes on all emissions to increase testing efficiency and hence get to more optimised solutions faster. This approach was successfully tested on a production engine comparing two injectors achieving 82% reduction in particulate number emissions during the first 200seconds of the NEDC relative to the EU5b baseline.
Finally it was found that both fuel properties and injector deposits can have a significant effect on particulate emissions.
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OudeNijeweme, D., Freeland, P., Behringer, M., and Aleiferis, P., "Developing Low Gasoline Particulate Emission Engines Through Improved Fuel Delivery," SAE Technical Paper 2014-01-2843, 2014, https://doi.org/10.4271/2014-01-2843.Also In
References
- Cohen A.J. et. al. The global burden of disease due to outdoor air pollution Journal of Toxicology and Environmental Health A 2005 Jul 9-23 13-14 1301 7
- Spatial assessment of PM10 and ozone concentrations in Europe 2005 978-92-9167-988-1
- Chambliss , S. et. al. THE IMPACT OF STRINGENT FUEL AND VEHICLE STANDARDS ON PREMATURE MORTALITY AND EMISSIONS ICCT'S GLOBAL TRANSPORTATION HEALTH AND CLIMATE ROADMAP SERIES October 2013 www.theicct.org
- Kittelson , D. ENGINES AND NANOPARTICLES: A REVIEW J. Aerosol Sci. 29 5/6 575 588 1998
- Drake , M. , Fansler , T. , Solomon , A. , and Szekely , G. Piston Fuel Films as a Source of Smoke and Hydrocarbon Emissions from a Wall-Controlled Spark-Ignited Direct-Injection Engine SAE Technical Paper 2003-01-0547 2003 10.4271/2003-01-0547
- Behringer , M. , Aleiferis , P. , OudeNijeweme , D. , and Freeland , P. Spray Formation from Spark-Eroded and Laser-Drilled Injectors for DISI Engines with Gasoline and Alcohol Fuels SAE Int. J. Fuels Lubr. 7 3 2014 10.4271/2014-01-2745
- Serras-Pereira , J. , Aleiferis , P. , Richardson , D. , and Wallace , S. Mixture Preparation and Combustion Variability in a Spray-Guided DISI Engine SAE Technical Paper 2007-01-4033 2007 10.4271/2007-01-4033
- Schöppe , D. et. al. Requirements for Future Gasoline DI Systems and Respective Platform Solutions 32. Internationales Wiener Motorensymposium 2011
- Parotto , M. , Sgatti , S. , and Sensi , F. Advanced GDI Injector Control with Extended Dynamic Range SAE Technical Paper 2013-01-0258 2013 10.4271/2013-01-0258
- Kufferath , A. et. al. The EU6 Challenge at GDI - Assessment of Feasible System Solutions 33. Internationales Wiener Motorensymposium 2012
- AVL Micro Soot Sensor Manual September 2009
- Cambustion DMS500 Fast Particulate Spectrometer Manual Version 3.5 Cambridge 2011
- Fraidl , G. et. al. Particulate Number for EU6+ Challenges and Solutions Advanced Emission Control Concepts for Gasoline Engines Stuttgart 21 23 May 2012
- AVL PARTICLE COUNTER, Product Guide January 2010
- Aikawa , K. , Sakurai , T. , and Jetter , J. Development of a Predictive Model for Gasoline Vehicle Particulate Matter Emissions SAE Int. J. Fuels Lubr. 3 2 610 622 2010 10.4271/2010-01-2115
- Leach , F. , Stone , R. , and Richardson , D. The Influence of Fuel Properties on Particulate Number Emissions from a Direct Injection Spark Ignition Engine SAE Technical Paper 2013-01-1558 2013 10.4271/2013-01-1558
- Leach , F. et. al. Particulate matter emissions from gasoline direct injection spark ignition engines Proceedings of the IMechE November 2013
- Stansfield , P. , Bisordi , A. , OudeNijeweme , D. , Williams , J. et al. The Performance of a Modern Vehicle on a Variety of Alcohol-Gasoline Fuel Blends SAE Int. J. Fuels Lubr. 5 2 813 822 2012 10.4271/2012-01-1272