This content is not included in your SAE MOBILUS subscription, or you are not logged in.
Commercial Vehicles: New Diesel Engine Concepts for Euro VI and Beyond
ISSN: 0148-7191, e-ISSN: 2688-3627
Published January 10, 2017 by SAE International in United States
Annotation ability available
The paper presents a numerical investigation, aimed to explore the potential of 2-stroke Diesel engines, able to meet Euro VI requirements, for application to medium size commercial vehicles (power rate: 80 kW at 2600 rpm, max. torque 420 Nm from 1200 to 1400 rpm). The study is based on experimental performance of a highly developed 4-stroke engine.
Two different designs are considered: Loop and Uniflow scavenging, the latter obtained through an opposed piston configuration. In both cases, no poppet valves are used, and the lubrication is provided by a 4-stroke-like oil sump.
The study started with the development of a 4-stroke EURO VI engine, on the basis of a previous EURO IV version. A prototype of the new engine (named 430) was built and tested. The second phase of the study consisted in the comparison to the 2-stroke configurations, considering the same performance and emissions targets, as well as the same constraints
Engine outputs are calculated by using GT-Power models: while for the 4-stroke unit these results are fully supported by experimental data, the 2-strokes are just “paper” engines. However, the CFD-1D modeling was supported by other detailed numerical simulations, including both scavenging and combustion analyses.
The two stroke concepts analyzed in the paper appear to yield several advantages, in comparison to their 4-stroke counterpart: reduced fuel consumption, cleaner combustion conditions, more compact dimensions, higher flexibility of the EGR control. On the other hand, they require a strong effort for the development of a specific combustion system.
CitationMattarelli, E., Rinaldini, C., and Patroncini, P., "Commercial Vehicles: New Diesel Engine Concepts for Euro VI and Beyond," SAE Technical Paper 2017-26-0034, 2017, https://doi.org/10.4271/2017-26-0034.
- Brouwers , A.,P. 150 and 300 kW Lightweight Diesel Aircraft Engine Design Study NASA Contract Report 3260 NASA Scientific and Technical Information Office 1980
- Fellberg , M. , Huber , J. , and Duerr , J. The Development of Detroit Diesel Allison's New Generation Series 53 Engines SAE Technical Paper 850259 1985 10.4271/850259
- Knoll , R. AVL Two-Stroke Diesel Engine SAE Technical Paper 981038 1998 10.4271/981038
- Hori , H. Scavenging Flow Optimization of Two-Stroke Diesel Engine by Use of CFD SAE Technical Paper 2000-01-0903 2000 10.4271/2000-01-0903
- Nuccio , P. , Marzano , M. R&D of a New G.D.I. 2-Stroke Engine with a Unidirectional Scavenging Flow and a Force-Feed Lubrication System SAE Paper 2007-32-0025 2007
- Mattarelli , E. , Rinaldini , C. , and Wilksch , M. 2-Stroke High Speed Diesel Engines for Light Aircraft SAE Int. J. Engines 4 2 2338 2360 2011 10.4271/2011-24-0089
- Rinaldini , C. , Mattarelli , E. , and Golovitchev , V. CFD Analyses on 2-Stroke High Speed Diesel Engines SAE Int. J. Engines 4 2 2240 2256 2011 10.4271/2011-24-0016
- De Marco , C. , Mattarelli , E. , Paltrinieri , F. , and Rinaldini , C. A New Combustion System for 2-Stroke HSDI Diesel Engines SAE Technical Paper 2007-01-1255 2007 10.4271/2007-01-1255
- Mattarelli , E. Virtual design of a novel two-stroke high-speed direct-injection diesel engine International Journal of Engine Research June 1 2009 10 3 175 193
- Mattarelli , E. , Rinaldini , C. , Cantore , G. , and Agostinelli , E. Comparison between 2 and 4-Stroke Engines for a 30 kW Range Extender SAE Int. J. Alt. Power. 4 1 67 87 2015 10.4271/2014-32-0114
- Mattarelli , E. , Rinaldini , C. , and Baldini , P. Modeling and Experimental Investigation of a 2-Stroke GDI Engine for Range Extender Applications SAE Technical Paper 2014-01-1672 2014 10.4271/2014-01-1672
- Regner , G. , Herold , R. , Wahl , M. , Dion , E. et al. The Achates Power Opposed-Piston Two-Stroke Engine: Performance and Emissions Results in a Medium-Duty Application SAE Int. J. Engines 4 3 2726 2735 2011 10.4271/2011-01-2221
- Regner , G. , Johnson , D. , Koszewnik , J. , Dion , E. et al. Modernizing the Opposed Piston, Two Stroke Engine for Clean, Efficient Transportation SAE Technical Paper 2013-26-0114 2013 10.4271/2013-26-0114
- Redon , F. , Kalebjian , C. , Kessler , J. , Rakovec , N. et al. Meeting Stringent 2025 Emissions and Fuel Efficiency Regulations with an Opposed-Piston, Light-Duty Diesel Engine SAE Technical Paper 2014-01-1187 2014 10.4271/2014-01-1187
- Gamma Technologies GT-Power v7.5 User’s Manual Westmont, IL (USA)
- Borghi , M. , Mattarelli , E. , and Montorsi , L. Integration of 3D-CFD and Engine Cycle Simulations: Application to an Intake Plenum SAE Technical Paper 2001-01-2512 2001 10.4271/2001-01-2512
- Fontanesi , S. and Giacopini , M. Multiphase CFD-CHT optimization of the cooling jacket and FEM analysis of the engine head of a V6 diesel engine Applied Thermal Engineering 52 2 15 April 2013 293 303 1359-4311
- Warey , A. , Gopalakrishnan , V. , Potter , M. , Mattarelli , E. et al. An Analytical Assessment of the CO2 Emissions Benefit of Two-Stroke Diesel Engines SAE Technical Paper 2016-01-0659 2016 10.4271/2016-01-0659
- Mattarelli , E. , Rinaldini , C. , and Savioli , T. Port Design Criteria for 2-Stroke Loop Scavenged Engines SAE Technical Paper 2016-01-0610 2016 10.4271/2016-01-0610
- Morel , T. and Keribar , R. A Model for Predicting Spatially and Time Resolved Convective Heat Transfer in Bowl-in-Piston Combustion Chambers SAE Technical Paper 850204 1985 10.4271/850204
- DIRECTIVE 1999/96/EC OF THE EUROPEAN PARLIAMENT AND OF THE COUNCIL 13 December 1999 Official Journal of the European Communities June 30 2016