This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Downsizing Potential of Methanol Fueled DISI Engine with Variable Valve Timing and Boost Control
Technical Paper
2018-01-0918
ISSN: 0148-7191, e-ISSN: 2688-3627
This content contains downloadable datasets
Annotation ability available
Sector:
Language:
English
Abstract
Methanol is gaining traction in some regions, e.g. for road transportation in China and for marine transportation in Europe. In this research, the possibility for achieving higher power output and higher efficiency with methanol, compared to gasoline, is investigated and the influence of several engine settings, such as valve timing and intake boost control, is studied. At wide open throttle (WOT), engine speed of 1650 rpm, the brake mean effective pressure (BMEP) of the methanol-fueled engine is higher than on gasoline, by around 1.8 bar. The maximum BMEP is further increased when positive valve overlap and higher intake boost pressure are applied. Thanks to a lower residual gas fraction, and a richer in-cylinder mixture with positive valve overlap period, the engine BMEP improves by a further 2.6 bar. Because of higher volumetric efficiency with a boosted intake air, the engine BMEP enhances with 4.7 bar. The maximum BMEP for gasoline was found through a test matrix using the design of experiment approach. At that BMEP (16.3 bar), the efficiency when fueling the engine with methanol improves by 22.7% relatively with valve overlap control and by 25.75% with intake boost control. The BMEP of the methanol engine can increase to a higher value without knock when a higher boost pressure or a longer valve overlap duration is employed. Limitations are no longer engine knock, but excessive peak in-cylinder pressures, however, being over 100 bar. If the maximum pressure is limited to 100 bar, the downsizing potential with boost control is higher than with variable valve timing. The engine could be further downsized by ~10.7% with methanol by boosting the intake pressure.
Recommended Content
Authors
Citation
Nguyen, D., Van Craeynest, T., Pillu, T., Coulier, J. et al., "Downsizing Potential of Methanol Fueled DISI Engine with Variable Valve Timing and Boost Control," SAE Technical Paper 2018-01-0918, 2018, https://doi.org/10.4271/2018-01-0918.Data Sets - Support Documents
Title | Description | Download |
---|---|---|
Unnamed Dataset 1 | ||
Unnamed Dataset 2 |
Also In
References
- Turner , J.W.G. , Popplewell , A. , Patel , R. , Johnson , T.R. et al. Ultra Boost for Economy: Extending the Limits of Extreme Engine Downsizing SAE Int. J. Engines 7 1 387 417 2014 10.4271/2014-01-1185
- Kalghatgi , G. and Stone , R. Fuel Requirements of Spark Ignition Engines Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering 232 1 22 35 2018 10.1177/0954407016684741
- Leduc , P. , Dubar , B. , Ranini , A. , and Monnier , G. Downsizing of Gasoline Engine: An Efficient Way to Reduce CO 2 Emissions Oil & Gas Science and Technology - Review IFP 58 1 115 127 2003 10.2516/ogst:2003008
- Caton , J.A. A Comparison Of Lean Operation and Exhaust Gas Recirculation: Thermodynamic Reasons for the Increases of Efficiency SAE Technical Paper 2013-01-0266 2013 10.4271/2013-01-0266
- Boot , M.D. , Tian , M. , Hensen , E.J.M. , and Mani Sarathy , S. Impact of Fuel Molecular Structure on Auto-Ignition Behavior - Design Rules for Future High Performance Gasolines Progress in Energy and Combustion Science 60 1 25 2017 10.1016/j.pecs.2016.12.001
- Remmert , S.M. , Cracknell , R.F. , Head , R. , Schuetze , A. et al. Octane Response in a Downsized, Highly Boosted Direct Injection Spark Ignition Engine SAE Int. J. Fuels Lubricants 7 1 131 143 2014 10.4271/2014-01-1397
- AlRamadan , A.S. , Sarathy , S.M. , Khurshid , M. , and Badra , J. A Blending Rule for Octane Numbers of PRFs and TPRFs with Ethanol Fuel 180 175 186 2016 10.1016/j.fuel.2016.04.032
- Anderson , J.E. , Kramer , U. , Mueller , S.A. , and Wallington , T.J. Octane Numbers of Ethanol− and Methanol−Gasoline Blends Estimated from Molar Concentrations Energy & Fuels 24 12 6576 6585 2010 10.1021/ef101125c
- Anderson , J.E. , Leone , T.G. , Shelby , M.H. , Wallington , T.J. et al. Octane Numbers of Ethanol-Gasoline Blends: Measurements and Novel Estimation Method from Molar Composition SAE Technical Paper 2012-01-1274 2012 10.4271/2012-01-1274
- Foong , T. M. , Morganti , K. J. , Brear , M. J. , da Silva , G. , et al. The Octane Numbers of Ethanol Blended with Gasoline and its Surrogates Fuel 115 727 739 2014 10.1016/j.fuel.2013.07.105
- Splitter , D.A. and Szybist , J.P. Experimental Investigation of Spark-Ignited Combustion with High-Octane Biofuels and EGR. 1. Engine Load Range and Downsize Downspeed Opportunity Energy & Fuels 28 2 1418 1431 2014 10.1021/ef401574p
- Wang , C. , Janssen , A. , Prakash , A. , Cracknell , R. et al. Splash Blended Ethanol in a Spark Ignition Engine - Effect of RON, Octane Sensitivity and Charge Cooling Fuel 196 21 31 2017 10.1016/j.fuel.2017.01.075
- Splitter , D.A. and Szybist , J.P. Experimental Investigation of Spark-Ignited Combustion with High-Octane Biofuels and EGR. 2. Fuel and EGR Effects on Knock-Limited Load and Speed Energy & Fuels 28 2 1432 1445 2014 10.1021/ef401575e
- Daniel , R. , Wang , C. , Xu , H. , Tian , G. et al. Dual-Injection as a Knock Mitigation Strategy Using Pure Ethanol and Methanol SAE Int. J. Fuels Lubricants 5 2 772 784 2012 10.4271/2012-01-1152
- Wang , C. , Zeraati-Rezaei , S. , Xiang , L. , and Xu , H. Ethanol Blends in Spark Ignition Engines: RON, Octane-Added Value, Cooling Effect, Compression Ratio, and Potential Engine Efficiency Gain Applied Energy 191 603 619 2017 10.1016/j.apenergy.2017.01.081
- Cracknell , R. , Prakash , A. , and Head , R. Influence of Laminar Burning Velocity on Performance of Gasoline Engines SAE Technical Paper 2012-01-1742 2012 10.4271/2012-01-1742
- Prakash , A. , Wang , C. , Janssen , A. , Aradi , A. et al. Impact of Fuel Sensitivity (RON-MON) on Engine Efficiency SAE Int. J. Fuels Lubricants 10 1 115 125 2017 10.4271/2017-01-0799
- Wang , C. , Prakash , A. , Aradi , A. , Cracknell , R. et al. Significance of RON and MON to a Modern DISI Engine Fuel 209 172 183 2017 10.1016/j.fuel.2017.07.071
- Remmert , S. , Campbell , S. , Cracknell , R. , Schuetze , A. et al. Octane Appetite: The Relevance of a Lower Limit to the MON Specification in a Downsized, Highly Boosted DISI Engine SAE Int. J. Fuels Lubricants 7 3 743 755 2014 10.4271/2014-01-2718
- Vancoillie , J. , Demuynck , J. , Sileghem , L. , Van De Ginste , M. et al. The Potential of Methanol as a Fuel for Flex-Fuel and Dedicated Spark-Ignition Engines Applied Energy 102 140 149 2013 10.1016/j.apenergy.2012.05.065
- Vancoillie , J. , Demuynck , J. , Sileghem , L. , Van De Ginste , M. et al. Comparison of the Renewable Transportation Fuels, Hydrogen and Methanol Formed from Hydrogen, with Gasoline - Engine Efficiency Study International Journal of Hydrogen Energy 37 12 9914 9924 2012 10.1016/j.ijhydene.2012.03.145
- Sileghem , L. , Alekseev , V.A. , Vancoillie , J. , Nilsson , E.J.K. et al. Laminar Burning Velocities of Primary Reference Fuels and Simple Alcohols Fuel 115 32 40 2014 10.1016/j.fuel.2013.07.004
- Morganti , K. , Viollet , Y. , Head , R. , Kalghatgi , G. et al. Maximizing the Benefits of High Octane Fuels in Spark-Ignition Engines Fuel 207 470 487 2017 10.1016/j.fuel.2017.06.066
- Sileghem , L. , Ickes , A. , Wallner , T. , and Verhelst , S. Experimental Investigation of a DISI Production Engine Fuelled with Methanol, Ethanol, Butanol and ISO-Stoichiometric Alcohol Blends SAE Technical Paper 2015-01-0768 2015 10.4271/2015-01-0768
- Vancoillie , J. , Sileghem , L. , Van de Ginste , M. , Demuynck , J. et al. Experimental Evaluation of Lean-Burn and EGR as Load Control Strategies for Methanol Engines SAE Technical Paper 2012-01-1283 2012 10.4271/2012-01-1283
- Balki , M.K. and Sayin , C. The Effect of Compression Ratio on the Performance, Emissions and Combustion of an SI (Spark Ignition) Engine Fueled with Pure Ethanol, Methanol and Unleaded Gasoline Energy 71 194 201 2014 10.1016/j.energy.2014.04.074
- Balki , M.K. , Sayin , C. , and Canakci , M. The Effect of Different Alcohol Fuels on the Performance, Emission and Combustion Characteristics of a Gasoline Engine Fuel 115 901 906 2014 10.1016/j.fuel.2012.09.020
- Li , J. , Zhao , Z. , Kazakov , A. , Chaos , M. et al. A Comprehensive Kinetic Mechanism for CO, CH 2 O, and CH 3 OH Combustion International Journal of Chemical Kinetics 39 3 109 136 2007 10.1002/kin.20218
- Mehl , M. , Pitz , W.J. , Westbrook , C.K. , and Curran , H.J. Kinetic Modeling of Gasoline Surrogate Components and Mixtures under Engine Conditions Proceedings of the Combustion Institute 33 1 193 200 2011 10.1016/j.proci.2010.05.027
- Kalghatgi , G. , Algunaibet , I. , and Morganti , K. On Knock Intensity and Superknock in SI Engines SAE Int. J. Engines 10 3 1051 1063 2017 10.4271/2017-01-0689
- Nguyen , D.-K. , Sileghem , L. , and Verhelst , S. A Quasi-Dimensional Combustion Model for Spark Ignition Engines Fueled with Gasoline-Methanol Blends Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering 232 1 57 74 2018 10.1177/0954407017728161
- Zhu , H. , Zhang , Y. , Xu , M. , and Kee , R.J. Droplet Vaporization Characteristics of Multicomponent Mixtures of Methanol and Gasoline Surrogate in Opposed Stagnation Flows Proceedings of the Combustion Institute 34 1 1545 1552 2013 10.1016/j.proci.2012.05.087
- Miyagawa , H. , Nagaoka , M. , Ohsawa , K. , and Yamada , T. Spray vaporization model for multi-component gasoline JSAE Review 19 4 299 304 1998 10.1016/S0389-4304(98)00021-6
- Lee , A. and Law , C.K. An Experimental Investigation on the Vaporization and Combustion of Methanol and Ethanol Droplets Combustion Science and Technology 86 1-6 253 265 1992 10.1080/00102209208947198
- Richard , S. , Bougrine , S. , Font , G. , Lafossas , F.-A. et al. On the Reduction of a 3D CFD Combustion Model to Build a Physical 0D Model for Simulating Heat Release, Knock and Pollutants in SI Engines Oil & Gas Science and Technology – Review IFP 64 3 223 242 2009 10.2516/ogst/2008055
- Demuynck , J. A Fuel Independent Heat Transfer Correlation for Premixed Spark Ignition Engines Ghent University 2012
- Caton , J. A. Maximum Efficiencies for Internal Combustion Engines: Thermodynamic Limitations International Journal of Engine Research 2018 10.1177/1468087417737700
- Lecointe , B. and Monnier , G. Downsizing a Gasoline Engine Using Turbocharging with Direct Injection SAE Technical Paper 2003-01-0542 2003 10.4271/2003-01-0542
- Lewis , A. , Ortiz-Soto , E. , Lavoie , G. , and Assanis , D.N. Scaling and Dimensional Methods to Incorporate Knock and Flammability Limits in Models of High-Efficiency Gasoline and Ethanol Engines International Journal of Engine Research 16 2 181 196 2015 10.1177/1468087414530387
- Nguyen , D.-K. and Verhelst , S. Computational Study of the Laminar Reaction Front Properties of Diluted Methanol-Air Flames Enriched by the Fuel Reforming Product Energy & Fuels 31 9 9991 10002 2017 10.1021/acs.energyfuels.7b00691
- Szybist , J.P. , Wagnon , S.W. , Splitter , D. , Pitz , W.J. et al. The Reduced Effectiveness of EGR to Mitigate Knock at High Loads in Boosted SI Engines SAE Int. J. Engines 10 5 2305 2318 2017 10.4271/2017-24-0061