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Load variation using Ducted Fuel Injection - DFI, with different compression ratio in IC engine
Technical Paper
2022-36-0089
ISSN: 0148-7191, e-ISSN: 2688-3627
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Event:
SAE BRASIL 2022 Congress
Language:
English
Abstract
Compression ignition engines are widely used in the cargo and passenger transport sectors, this is due to their high energy efficiency and can operate with renewable fuels. The search for increased efficiency in internal combustion engines and reduced emissions are increasingly stringent, so to meet regulatory emission standards, new technologies are being studied and developed to reduce emissions generated by engines, in the case of diesel engines compression ignition, studies of techniques to reduce NOx and soot have been carried out. One of the techniques studied is the application of the DFI - Ducted Fuel Injection concept, which makes the fuel spray pass through a small cylindrical duct installed upstream of the injection orifice of the injector nozzle, thus improving the air/fuel, making it more homogeneous and allowing a more complete combustion. This work addresses a study of this application of DFI with different compression ratios. To carry out the tests, a thermodynamic single-cylinder engine was used where its compression ratio is 16.0:1 in its normal condition, when the ducts are installed in the combustion chamber the engine starts to operate with a compression ratio of 16.5:1, thus, this study is necessary so that it is possible to visualize the behavior of the engine when the compression ratio changes, aiming at the thermodynamic behavior and emissions. CO, HC and NOx emissions were measured with FTIR spectroscopy equipment, and soot was measured by Laser Induced Incandescence - LII. The difference in compression ratio between DFI and free spray causes soot levels to increase considerably with increasing load in free spray mode, while for DFI the indices are almost unchanged.
Authors
Topic
Citation
Jairo Dias, F., Lacava, P., Rufino, C., Castejon Garcia, E. et al., "Load variation using Ducted Fuel Injection - DFI, with different compression ratio in IC engine," SAE Technical Paper 2022-36-0089, 2023, https://doi.org/10.4271/2022-36-0089.Also In
References
- Gehmlich , R. K. , Mueller , C. J. , Ruth , D. J. , Nilsen , C. W. , Skeen , S. A. , & Manin , J. 2018 Using ducted fuel injection to attenuate or prevent soot formation in mixing-controlled combustion strategies for engine applications Applied energy 226 1169 1186
- Bunsen , R. , Roscoe , HE. Photo-chemical researches. Part Measurement of the chemical action of light Philosoph Trans Roy Soc London 1857 147 355 80
- Schlichting , H. Boundary-layer theory 7th ed. New York McGraw-Hill 1975
- Polonowski , C. , Mueller , C. , Gehrke , C. , Bazyn , T. et al. 2012 An Experimental Investigation of Low-Soot and Soot-Free Combustion Strategies in a Heavy-Duty, Single-Cylinder, Direct-Injection, Optical Diesel Engine SAE Int. J. Fuels Lubr 5 1 51 77
- Curran , H.J. , Pitz , W.J. , Westbrook , C.K. , Callahan , G.V. Dryer , F.L. Oxidation of automotive primary reference fuels at elevated pressures Symposium (International) on Combustion 1998 27 1 379 387
- Mueller , C. J. , Nilsen , C. W. , Ruth , D. J. , Gehmlich , R. K. , Pickett , L. M. , Skeen , S. A. Ducted fuel injection: A new approach for lowering soot emissions from direct-injection engines Applied Energy 204 206 220 2017
- Gehmlich , R. K. , Mueller , C. J. , Ruth , D. J. , Nilsen , C. W. , Skeen , S. A. , & Manin , J. 2018 Using ducted fuel injection to attenuate or prevent soot formation in mixing-controlled combustion strategies for engine applications Applied energy 226 1169 1186
- Nilsen , C. W. , Biles , D. E. , Yraguen , B. F. , & Mueller , C. J. 2021 Ducted Fuel Injection vs. Conventional Diesel Combustion: Extending the Load Range in an Optical Engine with a Four-Orifice Fuel Injector SAE Technical Paper
- Nilsen , C. , Biles , D. , and Mueller , C. 2019 Using Ducted Fuel Injection to Attenuate Soot Formation in a Mixing-Controlled Compression Ignition Engine SAE Int. J. Engines 12 3 309 322 https://doi.org/10.4271/03-12-03-0021+