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System Level 1-D Analysis of an Air-System for a Heavy-Duty Gasoline Compression Ignition Engine
Technical Paper
2019-01-0240
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
A detailed study of various air system configurations has been conducted for a prototype gasoline compression ignition (GCI) engine using a Cummins MY2013 ISX15 heavy-duty diesel engine as the base platform. The study evaluated the configurations with the assumption that RON80 gasoline would be used as the fuel and the combustion chamber would have a geometric compression ratio (CR) of 16.5.
Using 3-D computational fluid dynamics (CFD) simulations, a high efficiency & low engine-out NOx GCI combustion recipe was developed across the five engine operating points from the heavy-duty Supplemental Emissions Test (SET) cycle: A100, B25, B50, B75, and C100. The CFD generated air-thermal boundary conditions and the combustion burn-rate & injector rate-of-injection profiles were imported into a calibrated 1-D engine model for the air-handling systems analysis. For the RON80 GCI concept, an engine-out NOx range 1-1.5 g/kWh was targeted and this drove a need for higher boost pressure and EGR rates with intake temperatures in the 65°C-70°C range. The production air system comprising a single stage turbocharger and a high-pressure exhaust gas recirculation (HPEGR) system was evaluated under these GCI boundary conditions and established as a benchmark for comparison.
To aid in future integration efforts with the base engine, only proven production and/or off-the-shelf single-stage boosting configurations were investigated. For the 1-Stage boosting systems, both variable geometry turbine (VGT) and waste-gated (WG) turbine options were examined. Multiple exhaust gas recirculation (EGR) systems were also considered and these included a dedicated high-pressure EGR system, a dedicated low-pressure EGR (LPEGR) system and a combination of the two with flow split between the HP and LP (DLEGR) systems. For DLEGR, a flow split sweep between the HP and the LP loop was carried out to optimize the pumping losses, separately for each load point. For an optimal compressor-turbine pairing, changes in the EGR strategy mandated variations in trims for the compressor and turbine wheels.
Based on the 1-D system modeling results, all the off-the-shelf 1-Stage boosting options were able to meet the GCI air-system targets, when coupled with an appropriate EGR strategy. Also, the production turbocharger when used with a dual-loop EGR strategy showed improvements in pumping losses, compared to the stock benchmark. Of all the feasible configurations, the best air-system was highlighted on the basis of minimized overall system losses.
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Authors
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Citation
Kumar, P., Pei, Y., Traver, M., and Watson, J., "System Level 1-D Analysis of an Air-System for a Heavy-Duty Gasoline Compression Ignition Engine," SAE Technical Paper 2019-01-0240, 2019, https://doi.org/10.4271/2019-01-0240.Data Sets - Support Documents
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References
- California Air Resources Board (CARB) https://www.arb.ca.gov/msprog/hdlownox/hdlownox.htm
- Robertson , W. California Air Resources Board Heavy-Duty Truck and Engine Plans SAE 2017 Commercial Vehicle Congress Rosemont, IL September 18-20 2017
- Splitter , D. , Wissink , M. , DelVescovo , D. , and Reitz , R. RCCI Engine Operation Towards 60% Thermal Efficiency SAE Technical Paper 2013-01-0279 2013 10.4271/2013-01-0279
- Joo , S. , Alger , T. , Chadwell , C. , De Ojeda , W. et al. A High Efficiency, Dilute Gasoline Engine for the Heavy-Duty Market SAE Int. J. Engines 5 4 1768 1789 2012 10.4271/2012-01-1979
- Hoyer , K. , Sellnau , M. , Sinnamon , J. , and Husted , H. Boost System Development for Gasoline Direct-Injection Compression-Ignition (GDCI) SAE Int. J. Engines 6 2 815 826 2013 10.4271/2013-01-0928
- Manente , V. , Zander , C. , Johansson , B. , Tunestal , P. et al. An Advanced Internal Combustion Engine Concept for Low Emissions and High Efficiency from Idle to Max Load Using Gasoline Partially Premixed Combustion SAE Technical Paper 2010-01-2198 2010 10.4271/2010-01-2198
- Kalghatgi , G.T. , Risberg , P. , and Angstrom , H.-E. Partially Pre-Mixed Auto-Ignition of Gasoline to Attain Low Smoke and Low NOx at High Load in a Compression Ignition Engine and Comparison with a Diesel Fuel SAE Technical Paper 2007-01-0006 2007 10.4271/2007-01-0006
- Kalghatgi , G. , Risberg , P. , and Ångström , H. Advantages of Fuels with High Resistance to Auto-Ignition in Late-injection, Low-temperature, Compression Ignition Combustion SAE Technical Paper 2006-01-3385 2006 10.4271/2006-01-3385
- Kalghatgi , G. , Hildingsson , L. , and Johansson , B. 2009
- Zhang , Y. , Kumar , P. , Traver , M. , and Cleary , D. Conventional and Low Temperature Combustion Using Naphtha Fuels in a Multi-Cylinder Heavy-Duty Diesel Engine SAE Int. J. Engines 9 2 2016 10.4271/2016-01-0764
- Zhang , Y. , Sommers , S. , Pei , Y. , Kumar , P. et al. Mixing-Controlled Combustion of Conventional and Higher Reactivity Gasolines in a Multi-Cylinder Heavy-Duty Compression Ignition Engine SAE Technical Paper 2017-01-0696 2017 10.4271/2017-01-0696
- Pei , Y. , Zhang , Y. , Kumar , P. , Traver , M. et al. CFD-Guided Heavy Duty Mixing-Controlled Combustion System Optimization with a Gasoline-Like Fuel SAE Int. J. Commer. Veh. 10 2 532 546 2017 10.4271/2017-01-0550
- Manente , V. , Johansson , B. , and Tunestal , P. Partially Premixed Combustion at High Load Using Gasoline and Ethanol, a Comparison with Diesel SAE Technical Paper 2009-01-0944 2009 10.4271/2009-01-0944
- Tuner , M. , Johansson , B. , Keller , P. , and Becker , M. Loss Analysis of a HD-PPC Engine with Two-Stage Turbocharging Operating in the European Stationary Cycle SAE Technical Paper 2013-01-2700 2013 10.4271/2013-01-2700
- Chadwell , C. , Alger , T. , Roberts , C. , and Arnold , S. Boosting Simulation of High Efficiency Alternative Combustion Mode Engines SAE Int. J. Engines 4 1 375 393 2011 10.4271/2011-01-0358
- Zhang , Y. , Kumar , P. , Pei , Y. , Traver , M. et al. An Experimental and Computational Investigation of Gasoline Compression Ignition Using Conventional and Higher Reactivity Gasolines in a Multi-Cylinder Heavy-Duty Diesel Engine SAE Technical Paper 2018-01-0226 2018 10.4271/2018-01-0226
- Kumar , P. , Zhang , Y. , Traver , M. , and Cleary , D. Simulation-Guided Air System Design for a Low Reactivity Gasoline-Like Fuel under Partially-Premixed Combustion in a Heavy-Duty Diesel Engine SAE Technical Paper 2017-01-0751 2017 10.4271/2017-01-0751
- Tuner , M. Potential ESC Performance of a Multi-Cylinder Heavy Duty PPC Truck Engine: System Simulations Based on Single Cylinder Experiments SAE Technical Paper 2013-01-0268 2013 10.4271/2013-01-0268
- Lewander , M. , Johansson , B. , Tunestål , P. , Keeler , N. et al. Evaluation of the Operating Range of Partially Premixed Combustion in a Multi Cylinder Heavy Duty Engine with Extensive EGR SAE Technical Paper 2009-01-1127 2009 10.4271/2009-01-1127
- Warden , R. , Edwin , F. , Douglas , Y. , Sattler , E. , and Patsy , M.