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Gas Exchange and Injection Modeling of an Advanced Natural Gas Engine for Heavy Duty Applications
Technical Paper
2017-24-0026
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
The scope of the work presented in this paper was to apply the latest open source CFD achievements to design a state of the art, direct-injection (DI), heavy-duty, natural gas-fueled engine. Within this context, an initial steady-state analysis of the in-cylinder flow was performed by simulating three different intake ducts geometries, each one with seven different valve lift values, chosen according to an estabilished methodology proposed by AVL. The discharge coefficient (Cd) and the Tumble Ratio (TR) were calculated in each case, and an optimal intake ports geometry configuration was assessed in terms of a compromise between the desired intensity of tumble in the chamber and the satisfaction of an adequate value of Cd. Subsequently, full-cycle, cold-flow simulations were performed for three different engine operating points, in order to evaluate the in-cylinder development of TR and turbulent kinetic energy (TKE) under transient conditions. The latest achievements in open source mesh generation and motions were applied, along with time-varying and case-fitted inizialization values for the fields of intake pressure and temperature. Finally, direct-injection of natural gas in the cylinder was incorporated in full-cycle simulations, to evaluate the effects of injection on charge motions and charge homogeneity at the estimated spark timing. Three specific engine operating points were simulated and different combinations of turbochargers and valve lift laws were tested. Results consistency was verified by means of validations with data from 1D simulations and literature.
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Paredi, D., Lucchini, T., D'Errico, G., Onorati, A. et al., "Gas Exchange and Injection Modeling of an Advanced Natural Gas Engine for Heavy Duty Applications," SAE Technical Paper 2017-24-0026, 2017, https://doi.org/10.4271/2017-24-0026.Data Sets - Support Documents
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References
- Cho H.M. and He B.Q. Spark ignition natural gas engines - a review energy conversion and management 48 2 608 618 2007
- Verhelst , S. , Sierens , R. , and Verstraeten , S. A Critical Review of Experimental Research on Hydrogen Fueled SI Engines SAE Technical Paper 2006-01-0430 2006 10.4271/2006-01-0430
- White C.M. , Steeper R.R. , and Lutz A.E. The hydrogen-fueled internal combustion engine: a technical review Int. J. Hydrogen Energy 31 1292 1305 2006
- Obermair , H. , Scarcelli , R. , and Wallner , T. Efficiency Improved Combustion System for Hydrogen Direct Injection Operation SAE Technical Paper 2010-01-2170 2010 10.4271/2010-01-2170
- d'Ambrosio , S. , Spessa , E. , Vassallo , A. , Ferrera , M. et al. Experimental Investigation of Fuel Consumption, Exhaust Emissions and Heat Release of a Small-Displacement Turbocharged CNG Engine SAE Technical Paper 2006-01-0049 2006 10.4271/2006-01-0049
- Soltic , P. CO2 Reduction and Cost Efficiency Potential of Natural Gas Hybrid Passenger Cars SAE Int. J. Engines 4 2 2395 2404 2011 10.4271/2011-24-0110
- Korakianitis T. , Namasivayam A.M. , and Crookes R.J. Natural gas fueled spark ignition (si) and compression-ignition (ci) engine performance and emissions Progress in Energy and Combustion Science 37 89 112 2011
- Kalam M.A. and Masjuki H.H. An experimental investigation of high performance natural gas engine with direct injection Energy 36 3563 3571 2011
- Verhelst S. and Wallner T. Hydrogen-fueled internal combustion engines Progress in Energy and Combustion Science 35 490 527 2009
- Andreassi L. , Cordiner S. , Mulone V. , Reynolds C. , and Evans R. Numerical-experimental comparison on the performance of a partially stratified charge natural gas fueled engine ASME, Internal Combustion Engine Division Fall Technical Conference 2004
- Xu B.P. , Zhang J.P. , Wen J.X. , Dembele S. , and Kar-watzki J. Numerical study of a highly under-expanded hydrogen jet International Conference on Hydrogen Safety Pisa, Italy September 2005
- White T.R. and Milton B.E. Shock waves 18 353 2008
- Scarcelli R. , Wallner T. , Obermair H. , Salazar V.M. , and Kaiser S.A. Cfd and optical investigations of fluid dynamics and mixture formation in a di-h2 ice ASME , ICEF2010-35084 2010
- Scarcelli R. , Kastengren A.L. , Powell C.F. , Wallner T. , and Matthias N.S. High-pressure gaseous injection: a comprehensive analysis of gas dynamics and mixing effects Proceedings of the Internal Combustion Engine Division - Fall Technical Conference ICEF2012-92137 2012
- Baratta , M. , Rapetto , N. , Spessa , E. , Fuerhapter , A. et al. Numerical and Experimental Analysis of Mixture Formation and Performance in a Direct Injection CNG Engine SAE Technical Paper 2012-01-0401 2012 10.4271/2012-01-0401
- Bartolucci , L. , Scarcelli , R. , Wallner , T. , Swantek , A. et al. CFD and X-Ray Analysis of Gaseous Direct Injection from an Outward Opening Injector SAE Technical Paper 2016-01-0850 2016 10.4271/2016-01-0850
- Lucchini , T. , D'Errico , G. , Brusiani , F. , Bianchi , G. et al. Multi-dimensional modeling of the air/fuel mixture formation process in a PFI engine for motorcycle applications SAE Technical Paper 2009-24-0015 2009 10.4271/2009-24-0015
- Lucchini , T. , D'Errico , G. , and Fiocco , M. Multi-Dimensional Modeling of Gas Exchange and Fuel-Air Mixing Processes in a Direct-Injection, Gas Fueled Engine SAE Technical Paper 2011-24-0036 2011 10.4271/2011-24-0036
- Montanaro , A. , Allocca , L. , Ettorre , D. , Lucchini , T. et al. Experimental Characterization of High-Pressure Impinging Sprays for CFD Modeling of GDI Engines SAE Int. J. Engines 4 1 747 763 2011 10.4271/2011-01-0685
- Lucchini , T. , D'Errico , G. , Onorati , A. , Bonandrini , G. et al. Development of a CFD Approach to Model Fuel-Air Mixing in Gasoline Direct-Injection Engines SAE Technical Paper 2012-01-0146 2012 10.4271/2012-01-0146
- Lucchini , T. , Della Torre , A. , D'Errico , G. , Montenegro , G. et al. Automatic Mesh Generation for CFD Simulations of Direct-Injection Engines SAE Technical Paper 2015-01-0376 2015 10.4271/2015-01-0376
- Bartolucci , L. , Cordiner , S. , Mulone , V. , Rocco , V. et al. Partially Stratified Charge Natural Gas Combustion: A LES Numerical Analysis SAE Technical Paper 2015-01-0398 2015 10.4271/2015-01-0398
- Bartolucci , L. , Cordiner , S. , Mulone , V. , Rocco , V. et al. Partially Stratified Charge Natural Gas Combustion: The Impact of Uncertainties on LES Modeling SAE Technical Paper 2015-24-2409 2015 10.4271/2015-24-2409
- Lucchini , T. , D'Errico , G. , Jasak , H. , and Tukovic , Z. Automatic Mesh Motion with Topological Changes for Engine Simulation SAE Technical Paper 2007-01-0170 2007 10.4271/2007-01-0170
- Lucchini T. , D’Errico G. , Brusiani F. , and Bianchi G. A finite-element based mesh motion technique for internal combustion engine simulations COMODIA 2008 MS2-3 2008
- Sevik , J. , Pamminger , M. , Wallner , T. , Scarcelli , R. et al. Performance, Efficiency and Emissions Assessment of Natural Gas Direct Injection compared to Gasoline and Natural Gas Port-Fuel Injection in an Automotive Engine SAE Int. J. Engines 9 2 1130 1142 2016 10.4271/2016-01-0806
- Lucchini , T. , Fiocco , M. , Onorati , A. , Montanaro , A. et al. Full-Cycle CFD Modeling of Air/Fuel Mixing Process in an Optically Accessible GDI Engine SAE Int. J. Engines 6 3 1610 1625 2013 10.4271/2013-24-0024
- Heywood J.B. Internal Combustion Engine Fundamentals McGraw-Hill 1988
- Ferrari G. Motori a Combustione Interna Edizioni Il Capitello 2001
- Zoldak , P. and Naber , J. Spark Ignited Direct Injection Natural Gas Combustion in a Heavy Duty Single Cylinder Test Engine - AFR and EGR Dilution Effects SAE Technical Paper 2015-01-2808 2015 10.4271/2015-01-2808
- Irie T. , Yasunobu T. , Kashimura H. , and Setoguchi T. Characteristics of the mach disk in the underexpanded jet in which the back pressure continuously changes with time J. of Thermal Science Vol. 12 No. 2
- Müller , F. , Schmitt , M. , Wright , Y. , and Boulouchos , K. Determination of Supersonic Inlet Boundaries for Gaseous Engines Based on Detailed RANS and LES Simulations SAE Int. J. Engines 6 3 1532 1543 2013 10.4271/2013-24-0004