This content is not included in your SAE MOBILUS subscription, or you are not logged in.
On Maximizing Argon Engines' Performance via Subzero Intake Temperatures in HCCI Mode at High Compression Ratios
ISSN: 0148-7191, e-ISSN: 2688-3627
Published April 14, 2020 by SAE International in United States
This content contains downloadable datasetsAnnotation ability available
The improvement of the indicated thermal efficiency of an argon power cycle (replacing nitrogen with argon in the combustion reaction) is investigated in a CFR engine at high compression ratios in homogeneous charge compression ignition (HCCI) mode. The study combines the two effects that can increase the thermodynamic efficiency as predicted by the ideal Otto cycle: high specific heat ratio (provided by argon), and high compression ratios. However, since argon has relatively low heat capacity (at constant volume), it results in high in-cylinder temperatures, which in turn, leads to the occurrence of knock. Knock limits the feasible range of compression ratios and further increasing the compression ratio can cause serious damage to the engine due to the high pressure rise rate caused by advancing the combustion phasing. The technique proposed in this study in order to avoid intense knock of an argon cycle at high compression ratios is to cool the intake charge to subzero temperatures which leads to lower in-cylinder temperatures and hence, less possibility of having knock. The main variable in this study was the intake temperature which was investigated at 40.0 °C and -6.0 °C which corresponded to low and high compression ratios, respectively. Emission analysis shows that the low in-cylinder temperature of the cooled case led to less complete combustion, and so, lower combustion efficiency. Since nitrogen is replaced with argon, NOx was only formed in negligible amounts due to some nitrogen traces in the used gasses cylinders. Furthermore, the cooled charge required more work to be done in the gas exchange process due to the decrease in the intake pressure caused by cooling the intake which deteriorated the gas exchange efficiency. The heat losses factor was found to be the main parameter that dictated the improvement of the thermodynamic efficiency and it was found that the indicated thermal efficiency was deteriorated for the cooled case as a result of all the aforementioned factors. Although the values of the thermodynamic efficiency at high compression ratios did not meet the expectations based on the ideal Otto cycle due to the assumptions of the ideal cycle, the obtained values, in general, are relatively high.
- Ali Elkhazraji - King Abdullah University of Science & Technology
- Abdulrahman Mohammed - King Abdullah University of Science & Technology
- Sufyan Jan - King Abdullah University of Science & Technology
- Jean-Baptiste Masurier - King Abdullah University of Science & Technology
- Robert Dibble - King Abdullah University of Science & Technology
- Bengt Johansson - King Abdullah University of Science & Technology
CitationElkhazraji, A., Mohammed, A., Jan, S., Masurier, J. et al., "On Maximizing Argon Engines' Performance via Subzero Intake Temperatures in HCCI Mode at High Compression Ratios," SAE Technical Paper 2020-01-1133, 2020, https://doi.org/10.4271/2020-01-1133.
Data Sets - Support Documents
|[Unnamed Dataset 1]|
|[Unnamed Dataset 2]|
|[Unnamed Dataset 3]|
- Johansson, B. , Förbränningsmotorer (Lund: Eckerle, 2006).
- Johansson, B., Andersson, Ö., Tunerstål, P., and Tunér, M. , Combustion Engines 1st Edition (2014).
- Hyvönen, J., Wilhelmsson, C., and Johansson, B. , “The Effect of Displacement on Air-Diluted Multi-Cylinder HCCI Engine Performance,” SAE Technical Paper 2006-01-0205, 2006, doi:https://doi.org/10.4271/2006-01-0205.
- Diesel, M. , “Two-stroke Low Speed Diesel Engines.”
- Christensen, M. and Johansson, B. , “Influence of Mixture Quality on Homogeneous Charge Compression Ignition,” SAE Technical Paper 982454, 1998, doi:https://doi.org/10.4271/982454.
- 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, doi:https://doi.org/10.4271/972874.
- Christensen, M., Hultqvist, A., and Johansson, B. , “Demonstrating the Multi Fuel Capability of a Homogeneous Charge Compression Ignition Engine with Variable Compression Ratio,” , 1999, doi:https://doi.org/10.4271/1999-01-3679.
- Onishi, S., Jo, S.H., Shoda, K., Jo, P. et al. , “Active Thermo-Atmosphere Combustion (ATAC) - A New Combustion Process for Internal Combustion Engines,” SAE Technical Paper 790501, 1979, doi:https://doi.org/10.4271/790501.
- Anders, H., Christensen, M., Johansson, B., Franke, A. et al. , “A Study of the Homogeneous Charge Compression Ignition Combustion Process by Chemiluminescence Imaging,” SAE Technical Paper 1999-01-3680, 1999, doi:https://doi.org/10.4271/1999-01-3680.
- Morgan, N.E., Morath, W.D., States, U., and Vickers, I. , “Development of a Hydrogen-Oxygen Internal Combustion Engine Space Power System,” iv, 200p, 1965.
- Underwood, P. and Dieges, P. , “Hydrogen and Oxygen Combustion for Pollution Free Operation of Existing Standard Automotive Engines,” in Intersociety Energy Conversion Engineering Conference, 1971, 38.
- Furuhama, S., Yamane, K., and Yamaguchi, I. , “Combustion Improvement in a Hydrogen Fueled Engine,” Int. J. Hydrogen Energy 2(3):329-340, 1977, doi:10.1016/0360-3199(77)90027-1.
- Laumann, E. and Reynolds, R. , “Hydrogen-Fueled Engine,” 1978.
- Aznar, M.S., Chorou, F., Chen, J.Y., Dreizler, A., and Dibble, R.W. , “Experimental and Numerical Investigation of the Argon Power Cycle,” in Vol. 1 Large Bore Engines; Fuels; Adv. Combust, 2019.
- Sierra Aznar, M., Pineda, D., Cage, B., Corvello, J., Shi, X., Chen, J.-Y., and Dibble, R. , “Experimental Investigation of Port and Direct Injection Strategies for Internal Combustion Engines with Argon as the Working Fluid,” 2017, doi:10.17605/OSF.IO/PT67Q.
- de Boer, P.C.T. and Hulet, J.-F. , “Performance of a Hydrogen-Oxygen-Noble Gas Engine,” Int. J. HydFfrogen Energy 5(4):439-452, 1980, doi:10.1016/0360-3199(80)90024-5.
- Ikegami, M., Miwa, K., and Shioji, M. , “A Study of Hydrogen Fuelled Compression Ignition Engines,” Int. J. Hydrogen Energy 7(4):341-353, 1982, doi:10.1016/0360-3199(82)90127-6.
- Mohammed, A.M., Masurier, J.-B., Elkhazraji, A., Dibble, R., and Johansson, B. , “A Path towards High Efficiency Using Argon in an HCCI Engine,” SAE Technical Paper 2019-01-0951, 2019, doi:https://doi.org/10.4271/2019-01-0951.
- Woschni, G. , “A Universally Applicable Equation for the Instantaneous Heat Transfer Coefficient in the Internal Combustion Engine,” SAE Technical Paper 670931, 1967, doi:https://doi.org/10.4271/670931.
- Mcbride, B., Gordon, S., and Reno, M. , “Coefficients for Calculating Thermodynamic and Transport Properties of Individual Species,” Nasa Tech. Memo. 4513(NASA-TM-4513):98, 1993.
- Burcat, A. and Ruscic, B. , “Third Millenium Ideal Gas and Condensed Phase Thermochemical Database for Combustion (with Update from Active Thermochemical Tables),” Argonne National Lab.(ANL), Argonne, IL (United States), 2005.
- de Melo, T.C.C., Machado, G.B., Belchior, C.R.P., Colaço, M.J., Barros, J.E.M., de Oliveira, E.J., and de Oliveira, D.G. , “Hydrous Ethanol-Gasoline Blends-Combustion and Emission Investigations on a Flex-Fuel Engine,” Fuel 97:796-804, 2012.
- Dernotte, J., Dec, J.E., and Ji, C. , “Energy Distribution Analysis in Boosted HCCI-like / LTGC Engines - Understanding the Trade-Offs to Maximize the Thermal Efficiency,” SAE Int. J. Engines 8(3):956-980, 2015, doi:https://doi.org/10.4271/2015-01-0824.