This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Investigation of an Advanced Combustion System for Stoichiometric Diesel to Reduce Soot Emissions
Technical Paper
2019-01-0023
ISSN: 0148-7191, e-ISSN: 2688-3627
This content contains downloadable datasets
Annotation ability available
Sector:
Language:
English
Abstract
Diesel engines are facing increased competition from gasoline engines in the light-duty and small non-road segments, primarily due to the high relative cost of emissions control systems for lean-burn diesel engines. Advancements in gasoline engine technology have decreased the operating cost advantage of diesels and the relatively high initial-cost disadvantage is now too large to sustain a strong business position. SwRI has focused several years of research efforts toward enabling diesel engine combustion systems to operate at stoichiometric conditions, which allows the application of a low-cost three-way catalyst emission control system which has been well developed for gasoline spark-ignited engines. One of the main barriers of this combustion concept is the result of high smoke emissions from poor fuel/air mixing. The current study focuses on improving the combustion system by investigating different fuel/air mixing strategies that enhance fuel spray - piston bowl interaction while simultaneously optimizing the fuel injection system. Computational Fluid Dynamics (CFD) simulations were carried out in conjunction with engine testing to evaluate different piston bowl designs as well as injector nozzle designs with reduced hole diameters to improve in-cylinder mixing and reduce spray over penetration. By using proposed combustion strategy, it was demonstrated that smoke emissions were reduced significantly from baseline under stoichiometric diesel operation.
Recommended Content
Authors
Topic
Citation
Chase, A., Miwa, J., Abidin, Z., and Cung, K., "Investigation of an Advanced Combustion System for Stoichiometric Diesel to Reduce Soot Emissions," SAE Technical Paper 2019-01-0023, 2019, https://doi.org/10.4271/2019-01-0023.Data Sets - Support Documents
Title | Description | Download |
---|---|---|
Unnamed Dataset 1 | ||
Unnamed Dataset 2 | ||
Unnamed Dataset 3 | ||
Unnamed Dataset 4 | ||
Unnamed Dataset 5 |
Also In
References
- www.dieselnet.com/standards/us/nonroad.php#tier4
- Reinhart , T. and Megel , M. An Efficient, Durable Vocational Truck Gasoline Engine SAE Int. J. Engines 9 3 1437 1448 2016 10.4271/2016-01-0660
- Gukelberger , R. , Gingrich , J. , Alger , T. , Almaraz , S. et al. LPL EGR and D-EGRĀ® Engine Concept Comparison Part 1: Part Load Operation SAE Int. J. Engines 8 2 570 582 2015 10.4271/2015-01-0783
- Gukelberger , R. , Gingrich , J. , Alger , T. , and Almaraz , S. LPL EGR and D-EGRĀ® Engine Concept Comparison Part 2: High Load Operation SAE Int. J. Engines 8 2 547 556 2015 10.4271/2015-01-0781
- Chadwell , C. , Alger , T. , Zuehl , J. , and Gukelberger , R. A Demonstration of Dedicated EGR on a 2.0 L GDI Engine SAE Int. J. Engines 7 1 434 447 2014 10.4271/2014-01-1190
- Maiboom , A. and Tauzia , X. Experimental Study of an Automotive Diesel Engine Running with Stoichiometric Combustion SAE Technical Paper 2012-01-0699 2012 10.4271/2012-01-0699
- Kim , J. , Reitz , R.D. , Park , S. , and Sung , K. Reduction in NOx and CO Emissions in Stoichiometric Diesel Combustion Using a Three-Way Catalyst ASME. J. Eng. Gas Turbines Power. 132 7 072803-072803-6 2010 10.1115/1.4000290
- Chase , S. , Nevin , R. , Winsor , R. , and Baumgard , K. Stoichiometric Compression Ignition (SCI) Engine SAE Technical Paper 2007-01-4224 2007 10.4271/2007-014224
- Maiboom , A. and Tauzia , X. Experimental Study of Intake Conditions and Injection Strategies Influence on PM Emissions and Engine Efficiency for Stoichiometric Diesel Combustion SAE Technical Paper 2011-01-0630 2011 10.4271/2011-01-0630
- Bitsis , D. , Roberts , C. , Miwa , J. , Chadwell , C. et al. Demonstration of a Novel, off Road, Diesel Combustion Concept SAE Technical Paper 2016-01-0728 2016 10.4271/2016-01-0728
- Park , S. and Reitz , R.D. Optimization of Fuel/Air Mixture Formation for Stoichiometric Diesel Combustion Using a 2-Spray-Angle Group-Hole Nozzle 2008 10.1016/j.fuel.2008.10.028
- Cung , K. and Ciatti , S. A Study of Injection Strategy to Achieve High Load Points for Gasoline Compression Ignition (GCI) Operation Proc. ASME 2017 Internal Combustion Engine Fall Technical Conference
- Han , Z. and Reitz , R.D. A Temperature Wall Function Formulation for Variable Density Turbulence Flow with Application to Engine Convective Heat Transfer Modeling International Journal of Heat and Mass Transfer 40 3 613 625 1997 10.1016/0017-9310(96)00117-2
- Cung , K. , Bitsis , D.C. , Briggs , T. , Kalaskar , V. et al. Effect of Micro-Hole Nozzle on Diesel Spray and Combustion SAE Technical Paper 2018-01-0301 2018 10.4271/2018-01-0301