This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Natural Gas Fueled Engines Modeling under Partial Stratified Charge Operating Conditions
Technical Paper
2017-24-0093
ISSN: 0148-7191, e-ISSN: 2688-3627
This content contains downloadable datasets
Annotation ability available
Sector:
Language:
English
Abstract
Using natural gas in internal combustion engines (ICEs) is emerging as a promising strategy to improve thermal efficiency and reduce exhaust emissions. One of the main benefits related to the use of this fuel is that the engine can be run with lean mixtures without compromising its performances. However, as the mixture is leaned out beyond the Lean Misfire Limit (LML), several technical problems are more likely to occur. The flame propagation speed gradually decreases, leading to a slower heat release and a low combustion quality, thus increasing the occurrence of misfiring and incomplete combustions. This in turn results in a sharp increment in CO and UHC emissions, as well as in cycle-to-cycle variability. In order to limit the above-mentioned problems, different solutions have been proposed over the last decade. Among them, the stratification or the partial stratification of the charge has been shown to successfully extend the lean limit with respect to conventional lean burn engines.
During the development and optimization of such strategies, Computational Fluid Dynamics (CFD) is a fundamental tool to thoroughly understand the phenomena occurring during the mixing and combustion phases. In order to reliably simulate the combustion process, a proper model is required which takes account of the Turbulence-Chemistry Interaction (TCI).
In the present work the Partially Stirred Reactor (PaSR) model was used in the numerical simulation of a natural gas fueled single cylinder research engine. Several tests with different relative air-to-fuel ratios were carried on in order to evaluate the robustness of the model, without performing any tuning operation across the various test cases. For this purpose, both homogeneous and partially stratified charge (PSC) cases were run.
Results were compared against the experimental data gathered at the University of British Columbia by E.Chan et al., showing a good agreement between such data and the numerical ones in terms of pressure trace over time. The solver was able to correctly capture the performance enhancement of PSC engines with respect to the homogeneous counterparts, thus confirming the potential of CFD as a valid alternative to experimental investigation.
Authors
Topic
Citation
Bartolucci, L., Cordiner, S., Mulone, V., and Rocco, V., "Natural Gas Fueled Engines Modeling under Partial Stratified Charge Operating Conditions," SAE Technical Paper 2017-24-0093, 2017, https://doi.org/10.4271/2017-24-0093.Data Sets - Support Documents
Title | Description | Download |
---|---|---|
Unnamed Dataset 1 | ||
Unnamed Dataset 2 | ||
Unnamed Dataset 3 | ||
Unnamed Dataset 4 | ||
Unnamed Dataset 5 | ||
Unnamed Dataset 6 | ||
Unnamed Dataset 7 |
Also In
References
- Aksu C. , Kawahara N. , Tsuboi K. , Kondo M. , and Tomita E. Extension of PREMIER combustion operation range using split micro pilot fuel injection in a dual fuel natural gas compression ignition engine: A performance-based and visual investigation Fuel 185 243 253 2016
- Wang , M. , Xu , Z. , Li , M. , and Lee , C. Numerical Study and Parameter Optimization on a Diesel - Natural Gas Dual Fuel Engine SAE Technical Paper 2016-01-0769 2016 10.4271/2016-01-0769
- Shan X. , Qian Y. , Zhu L. , and Lu X. Effects of EGR rate and hydrogen/carbon monoxide ratio on combustion and emission characteristics of biogas/diesel dual fuel combustion engine Fuel 181 1050 1057 2016
- Yilmaz I. T. and Gumus M. Investigation of the effect of biogas on combustion and emissions of TBC diesel engine Fuel 188 69 78 2017
- Mustafi N. N. , Raine R. R. , and Verhelst S. Combustion and emissions characteristics of a dual fuel engine operated on alternative gaseous fuels Fuel 109 669 678 2013
- Prasad R. K. , Jain S. , Verma G. , and Agarwal A. K. Laser ignition and flame kernel characterization of HCNG in a constant volume combustion chamber Fuel 190 318 327 2017
- Srivastava , D. and Agarwal , A. Laser Ignition of Single Cylinder Engine and Effects of Ignition Location SAE Technical Paper 2013-01-1631 2013 10.4271/2013-01-1631
- Ramadhas A. S. Alternative Fuels for Transportation CRC Press 2010
- 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
- Pamminger , M. , Sevik , J. , Scarcelli , R. , Wallner , T. et al. Evaluation of Knock Behavior for Natural Gas - Gasoline Blends in a Light Duty Spark Ignited Engine SAE Int. J. Engines 9 4 2153 2165 2016 10.4271/2016-01-2293
- Hora T. S. , Shukla P. C. , and Agarwal A. K. Particulate emissions from hydrogen enriched compressed natural gas engine Fuel 166 574 580 2016
- Bradley D. , Lawes M. , and Mumby R. Burning velocity and Markstein length blending laws for methane/air and hydrogen/air blends Fuel 187 268 275 2017
- Karavalakis G. et al. Regulated, greenhouse gas, and particulate emissions from lean-burn and stoichiometric natural gas heavy-duty vehicles on different fuel compositions Fuel 175 146 156 2016
- Cho H. M. and He B.-Q. Combustion and emission characteristics of a lean burn natural gas engine Int. J. Automot. Technol. 9 4 415 422 2008
- Manivannan , A. , porai , P. , Chandrasekaran , S. , and Ramprabhu , R. Lean Burn Natural Gas Spark Ignition Engine - An Overview SAE Technical Paper 2003-01-0638 2003 10.4271/2003-01-0638
- Chen , S. and Beck , N. Gas Engine Combustion Principles and Applications SAE Technical Paper 2001-01-2489 2001 10.4271/2001-01-2489
- Sobiesiak , A. and Zhang , S. The First and Second Law Analysis of Spark Ignition Engine Fuelled with Compressed Natural Gas SAE Technical Paper 2003-01-3091 2003 10.4271/2003-01-3091
- Franklin , M. , Kittelson , D. , Leuer , R. , and Pipho , M. A PC-Based Fuel and Ignition Control System Used to Map the 3-D Surfaces of Torque and Emissions Versus Air-Fuel Ratio and Ignition Timing SAE Technical Paper 940546 1994 10.4271/940546
- Ting , D. and Checkel , M. The Effects of Turbulence of Spark-Ignited, Ultra Lean, Premixed Methane-Air Flame Growth in a Combustion Chamber SAE Technical Paper 952410 1995 10.4271/952410
- Reynolds C. C. O. and Evans R. L. Improving emissions and performance characteristics of lean burn natural gas engnes through partial stratification Int J engine Res 5 1 105 114 2004
- Chan E. C. , Davy M. H. , de Simone G. , and Mulone V. Numerical and Experimental Characterization of a Natural Gas Engine With Partially Stratified Charge Spark Ignition J. Eng. Gas Turbines Power 133 2 22801 22808 Oct. 2010
- Bartolucci L. , Chan E. C. , Cordiner S. , Mulone V. , and Rocco V. Natural gas fueling: A LES based injection and combustion modeling for partially stratified engines Energy Procedia 2015 82
- Bartolucci , L. , Cordiner , S. , Mulone , V. , Rocco , V. et al. Natural Gas Partially Stratified Charge Combustion: Extended Analysis of Experimental Validation and Study of Turbulence Impact on Flame Propagation SAE Technical Paper 2016-01-0596 2016 10.4271/2016-01-0596
- 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
- CONVERGE CFD https://convergecfd.com/
- Tanner F. X. , Zhu G.-S. , and Reitz R. D. A turbulence Dissipation Correction to the k-epsilon Model and Its Effect on Turbulence Length Scales in Engine Flows International Multidimensional Engine Modeling User’s Group Meeting at the SAE Congress 2001
- Lu T. and Law C. K. A criterion based on computational singular perturbation for the identification of quasi steady state species: A reduced mechanism for methane oxidation with NO chemistry Combust. Flame 154 4 761 774 2008
- Tan Z. and Reitz R. D. An ignition and combustion model based on the level-set method for spark ignition engine multidimensional modeling Combust. Flame 145 1 1 15 2006
- Zhang , A. , Scarcelli , R. , Lee , S. , Wallner , T. et al. Numerical Investigation of Spark Ignition Events in Lean and Dilute Methane/Air Mixtures Using a Detailed Energy Deposition Model SAE Technical Paper 2016-01-0609 2016 10.4271/2016-01-0609
- Bartolucci L. , Cordiner S. , Mulone V. , and Rocco V. Natural Gas Stable Combustion under Ultra-Lean Operating Conditions in Internal Combustion Engines Energy Procedia 2016 101
- Bentebbiche , A. , Bouhadef , K. , Veynante , D. et al. Forsch Ingenieurwes 2005 69 236 10.1007/s10010-005-0008-y