Reduction of pressure rise rates in boosted HCCI engine using advanced valve actuation strategies

• Autorzy: Hunicz J. , Rybak A. , Gęca M.

Identyfikatory

DOI

10.5604/01.3001.0012.4812

• Języki publikacji: EN

Abstrakty

EN

Homogeneous Charge Compression Ignition (HCCI) is a promising low temperature combustion technology which offers high fuel efficiency and extremely low exhaust emissions. However, there are still some pending issues to be resolved before the technology will achieve mass production level. Namely, combustion controllability should be improved and HCCI operating range should be widen. The latter is constrained by excessive combustion rates under high loads. In this study, advanced variable valve actuation strategies were applied to control auto-ignition timings and combustion rates. The examinations were conducted using single-cylinder research engine fuelled with directly injected gasoline. The HCCI combustion was achieved using negative valve overlap technique. The engine was run under boosted conditions, in an operation regime where acceptable pressure rise rate (PRR) level is usually exceeded. Selected valve timing sweeps were carried out within a scope of the experiments to evaluate PRR reduction potential. The obtained results manifested superior combustion controllability. Late exhaust valve closing enabled reduction of the amount of internally re-circulated exhaust, which propagated to the main event combustion. From the intake side, two effects were observed, i.e. variability of the intake air aspiration and variability of the apparent compression ratio. Both phenomena were found to affect combustion timings and rates.

Słowa kluczowe

EN

low temperature combustion; HCCI; valve actuation; combustion harshness

• Wydawca: Łukasiewicz Research Network - Institute of Aviation ; European Science Society of Powertrain and Transport KONES Poland ; Wydawnictwo Instytutu Technicznego Wojsk Lotniczych
• Czasopismo: Journal of KONES
• Rocznik: 2018
• Tom: Vol. 25, No. 4
• Strony: 369--376
• Opis fizyczny: Bibliogr. 16 poz., rys.

Twórcy

autor

Hunicz J.

• Lublin University of Technology, Faculty of Mechanical Engineering Nadbystrzycka 36, 20-618 Lublin tel.[phone]

autor

Rybak A.

• Lublin University of Technology, Faculty of Mechanical Engineering Nadbystrzycka 36, 20-618 Lublin tel.[phone]

autor

Gęca M.

• Lublin University of Technology, Faculty of Mechanical Engineering Nadbystrzycka 36, 20-618 Lublin tel.[phone]

Bibliografia

• [1] Hunicz, J., An Experimental Study into the Chemical Effects of Direct Gasoline Injection into Retained Residuals in a Homogeneous Charge Compression Ignition Engine, International Journal of Engine Research, Vol. 17, pp. 1031-1144, 2016.
• [2] Hunicz, J., An Experimental Study of Negative Valve Overlap Injection Effects and Their Impact on Combustion in a Gasoline HCCI Engine, Fuel, Vol. 117, pp. 236-250, 2014.
• [3] Hunicz, J., Gęca, M. S., Kordos, P., Komsta, H., An Experimental Study on a Boosted Gasoline HCCI Engine under Different Direct Fuel Injection Strategies, Experimental Thermal and Fluid Science, Vol. 62, pp. 151-163, 2015.
• [4] Hunicz, J., Tmar, A., Krzaczek, P., Effects of Mixture Stratification on Combustion and Emissions of Boosted Controlled Auto-Ignition Engines, Energies, Vol. 10, pp. 21-72, 2017.
• [5] Kodavasal, J., Lavoie, G. A., Assanis, D. N., Martz J. B., The Effect of Diluent Composition on Homogeneous Charge Compression Ignition Auto-Ignition and Combustion Duration, Proceedings of the Combustion Institute, Vol. 35, pp. 3019-3026, 2015.
• [6] Lavy, J., Dabadie, J. C., Angelberger, C., Duret, P., et al., Innovative Ultra-Low NOX Controlled Auto-Ignition Combustion Process for Gasoline Engines: The 4-SPACE Project, SAE Technical Paper, 2000-01-1837, 2000.
• [7] Mikulski, M., Balakrishnan, P. R., Doosje, E., Bekdemir, C., Variable Valve Actuation Strategies for Better Efficiency Load Range and Thermal Management in an RCCI Engine, SAE Technical Paper, 2018-01-0254, 2018.
• [8] Mikulski, M., Bekdemir, C., Understanding the Role of Low Reactivity Fuel Stratification in a Dual Fuel RCCI Engine – A Simulation Study, Applied Energy, Vol. 191, pp. 689–708, 2017.
• [9] Milovanovic, N., Chen, R., Turner, J., Influence of the Variable Valve Timing Strategy on the Control of a Homogeneous Charge Compression (HCCI) Engine, SAE Technical Paper, 2004-01-1899, 2004.
• [10] Nevin, R. M., Sun, Y., Gonzalez, D., Manuel, A., Reitz, R. D., PCCI Investigation Using Variable Intake Valve Closing in a Heavy Duty Diesel Engine, SAE Technical Paper, 2007-01-0903, 2007.
• [11] Saxena, S., Bedoya, I. D., Fundamental Phenomena Affecting Low Temperature Combustion and HCCI Engines, High Load Limits and Strategies for Extending These Limits, Progress in Energy and Combustion Science, Vol. 39, pp. 457-488, 2013.
• [12] Shingne, P. S., Middleton, R. J., Borgnakke, C., Martz, J. B., The Effects of Boost Pressure on Stratification and Burn Duration of Gasoline Homogeneous Charge Compression Ignition Combustion, International Journal of Engine Research, 2018.
• [13] Urushihara, T., Hiraya, K., Kakuhou, A., Itoh, T., Expansion of HCCI Operating Region by the Combination of Direct Fuel Injection, Negative Valve Overlap and Internal Fuel Reformation, SAE Technical Paper, 2003-01-0749, 2003.
• [14] Wolk, B., Ekoto, I., Northrop, W. F., Moshammer, K., Hansen, N., Detailed Speciation and Reactivity Characterization of Fuel-Specific in-Cylinder Reforming Products and theAssociated Impact on Engine Performance, Fuel, Vol. 185, pp. 341-361, 2016.
• [15] Yao, M., Zheng, Z., Liu, H., Progress and Recent Trends in Homogeneous Charge Compression Ignition (HCCI) Engines, Progress in Energy and Combustion Science, Vol. 34, pp. 398-437, 2009.
• [16] Yap, D., Megaritis, A., Wyszynski, M., Xu, H., Effect of inlet valve timing on boosted gasoline HCCI with residual gas trapping, SAE Technical Paper, 2005-01-2136, 2005.

Uwagi

Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2018).