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Isobaric Combustion at a Low Compression Ratio
Technical Paper
2020-01-0797
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
In a previous study, it was shown that isobaric combustion cycle, achieved by multiple injection strategy, is more favorable than conventional diesel cycle for the double compression expansion engine (DCEE) concept. In spite of lower effective expansion ratio, the indicated efficiencies of isobaric cycles were approximately equal to those of a conventional diesel cycle. Isobaric cycles had lower heat transfer losses and higher exhaust losses which are advantageous for DCEE since additional exhaust energy can be converted into useful work in the expander. In this study, the performance of low-pressure isobaric combustion (IsoL) and high-pressure isobaric combustion (IsoH) in terms of gross indicated efficiency, energy flow distribution and engine-out emissions is compared to the conventional diesel combustion (CDC) but at a relatively lower compression ratio of 11.5. The experiments are conducted in a Volvo D13C500 single-cylinder heavy-duty engine using standard EU diesel fuel. The current study consists of two sets of experiments. In the first set, the effect of exhaust gas recirculation (EGR) is studied at different combustion modes using the same air-fuel ratio obtained from the preceding work. In the second set of experiments, different injection strategies are investigated for IsoL and IsoH combustion at constant and varying load conditions. From the results, it is found that isobaric combustion has similar or higher gross indicated efficiency than those of CDC. The exhaust losses are higher while the heat transfer losses are lower than CDC, which could be beneficial for DCEE concept. For isobaric cases, the NOx emissions were lower with higher uHC/CO/Soot emissions compared to CDC. From the injection strategy study, it was found that the gross indicated efficiency is highest with three injections i.e. at medium load. The efficiency is lower for both low and high load conditions due to increased exhaust and heat transfer losses, respectively. Also, the gross indicated efficiency is largely unchanged when more than one injection event is executed; however the IsoL yields higher overall emissions as compared to IsoH combustion.
Authors
- Aibolat Dyuisenakhmetov - King Abdullah University of Science & Technology
- Harsh Goyal - King Abdullah University of Science & Technology
- Moez Ben Houidi - King Abdullah University of Science & Technology
- Rafig Babayev - King Abdullah University of Science & Technology
- Jihad Badra - Saudi Aramco
- Bengt Johansson - King Abdullah University of Science & Technology
Citation
Dyuisenakhmetov, A., Goyal, H., Ben Houidi, M., Babayev, R. et al., "Isobaric Combustion at a Low Compression Ratio," SAE Technical Paper 2020-01-0797, 2020, https://doi.org/10.4271/2020-01-0797.Data Sets - Support Documents
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References
- Strategy for Reducing Heavy-Duty Vehicles http://ec.europa.eu/clima/policies/transport/vehicles/heavy/docs/com_285_2014_en.pdf 2014
- 2016
- Muncrief , R. and Sharpe , B. Overview of the Heavy-duty Vehicle Market and CO2 Emissions in the European Union 2015
- http://s04.static-shell.com/content/dam/shell-new/local/country/deu/downloads/pdf/publications-2010truckstudyfull.pdf
- Kook , S. , Bae , C. , Miles , P. , Choi , D. et al. The Influence of Charge Dilution and Injection Timing on Low-Temperature Diesel Combustion and Emissions SAE Technical Paper 2005-01-3837 2005 https://doi.org/10.4271/2005-01-3837
- Noehre , C. , Andersson , M. , Johansson , B. , and Hultqvist , A. Characterization of Partially Premixed Combustion SAE Technical Paper 2006-01-3412 2006 https://doi.org/10.4271/2006-01-3412
- Maurya , R. and Agarwal , A. Combustion and Emission Behavior of Ethanol Fuelled Homogeneous Charge Compression Ignition (HCCI) Engine SAE Technical Paper 2008-28-0064 2008 https://doi.org/10.4271/2008-28-0064
- Christensen , M. , Johansson , B. , and Einewall , P. Homogeneous Charge Compression Ignition (HCCI) Using Isooctane, Ethanol and Natural Gas - A Comparison with Spark Ignition Operation SAE Technical Paper 972874 1997 https://doi.org/10.4271/972874
- Splitter , D. , Hanson , R. , Kokjohn , S. , and Reitz , R. Reactivity Controlled Compression Ignition (RCCI) Heavy-Duty Engine Operation at Mid-and High-Loads with Conventional and Alternative Fuels SAE Technical Paper 2011-01-0363 2011 https://doi.org/10.4271/2011-01-0363
- Kokjohn , S. , Reitz , R. , Splitter , D. , and Musculus , M. Investigation of Fuel Reactivity Stratification for Controlling PCI Heat-Release Rates Using High-Speed Chemiluminescence Imaging and Fuel Tracer Fluorescence SAE Int. J. Engines 5 2 248 269 2012 https://doi.org/10.4271/2012-01-0375
- 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 https://doi.org/10.4271/2006-01-3385
- Kalghatgi , G. , Risberg , P. , and Ångström , H. 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 https://doi.org/10.4271/2007-01-0006
- Goyal , H. , Kook , S. , Hawkes , E. , Chan , Q. et al. Influence of Engine Speed on Gasoline Compression Ignition (GCI) Combustion in a Single-Cylinder Light-Duty Diesel Engine SAE Technical Paper 2017-01-0742 2017 https://doi.org/10.4271/2017-01-0742
- Goyal , H. , Kook , S. , and Ikeda , Y. The Influence of Fuel Ignition Quality and First Injection Proportion on Gasoline Compression Ignition (GCI) Combustion in a Small-Bore Engine Fuel 235 1207 1215 2019 10.1016/j.fuel.2018.08.090
- Goyal , H. and Kook , S. Ignition Process of Gasoline Compression Ignition (GCI) Combustion in a Small-bore Optical Engine Fuel 256 115844 2019 10.1016/j.fuel.2019.115844
- Goyal , H. , Zhang , Y. , Kook , S. , Kim , K.S. , and Kweon , C.-B. Low- to High-Temperature Reaction Transition in a Small-bore Optical Gasoline Compression Ignition (GCI) Engine SAE Int. J. Engines 12 5 2019 10.4271/03-12-05-0031
- Manente , V. , Johansson , B. , Tunestal , P. , and Cannella , W. Effects of Different Type of Gasoline Fuels on Heavy Duty Partially Premixed Combustion SAE Int. J. Engines 2 2 71 88 2009 10.4271/2009-01-2668
- Cummins , L. Diesel’s Engine: From Conception to 1918 Carnot Press 1993
- Clarke , J. and O'Malley , E. Analytical Comparison of a Turbocharged Conventional Diesel and a Naturally Aspirated Compact Compression Ignition Engine both Sized for a Highway Truck SAE Technical Paper 2013-01-1736 2013 https://doi.org/10.4271/2013-01-1736
- Phillips , F. , Gilbert , I. , Pirault , J.P. , and Megel , M. Scuderi Split Cycle Research Engine: Overview, Architecture and Operation SAE Int. J. Engines 4 1 450 466 2011 10.4271/2011-01-0403
- https://www.greencarcongress.com/2013/09/20130904-ricardo.html 2013
- Lam , N. , Tuner , M. , Tunestal , P. , Andersson , A. et al. Double Compression Expansion Engine Concepts: A Path to High Efficiency SAE Int. J. Engines 8 4 1562 1578 2015 10.4271/2015-01-1260
- Branyon , D. and Simpson , D. Miller Cycle Application to the Scuderi Split Cycle Engine (by Downsizing the Compressor Cylinder) SAE Technical Paper 2012-01-0419 2012 https://doi.org/10.4271/2012-01-0419
- Lam , N. , Andersson , A. , and Tunestal , P. Double Compression Expansion Engine Concepts: Efficiency Analysis over a Load Range SAE Technical Paper 2018-01-0886 2018 https://doi.org/10.4271/2018-01-0886
- Bhavani Shankar , V. , Lam , N. , Andersson , A. , and Johansson , B. Optimum Heat Release Rates for a Double Compression Expansion (DCEE) Engine SAE Technical Paper 2017-01-0636 2017 https://doi.org/10.4271/2017-01-0636
- Bhavani Shankar , V. , Johansson , B. , and Andersson , A. Double Compression Expansion Engine: A Parametric Study on a High-Efficiency Engine Concept SAE Technical Paper 2018-01-0890 2018 https://doi.org/10.4271/2018-01-0890
- Lam , N. , Tunestal , P. , and Andersson , A. Simulation of System Brake Efficiency in a Double Compression-Expansion Engine-Concept (DCEE) Based on Experimental Combustion Data SAE Technical Paper 2019-01-0073 2019 https://doi.org/10.4271/2019-01-0073
- Babayev , R. , Ben Houidi , M. , Andersson , A. , and Johansson , B. Isobaric Combustion: A Potential Path to High Efficiency, in Combination with the Double Compression Expansion Engine (DCEE) Concept SAE Technical Paper 2019-01-0085 2019 https://doi.org/10.4271/2019-01-0085
- Babayev , R. , Houidi , M. , Shankar , V. , Aljohani , B. et al. Injection Strategies for Isobaric Combustion SAE Technical Paper 2019-01-2267 2019 http://doi.org/10.4271/2019-01-2267
- Okamoto , T. and Uchida , N. New Concept for Overcoming the Trade-Off between Thermal Efficiency, Each Loss and Exhaust Emissions in a Heavy Duty Diesel Engine SAE Int. J. Engines 9 2 2016 10.4271/2016-01-0729
- Nyrenstedt , G. , AlRamadan , A. , Tang , Q. , Badra , J. , Cenker , E. , Houidi , M.B. et al.
- Tang , Q. , Sampath , R. , Sharma , P. , Nyrenstedt , G. , AlRamadan , A. et al.