THE EFFECT OF INCREASED INTAKE AIR PRESSURE OF A NATURALLY ASPIRATED DIESEL ENGINE ON PERFORMANCE AND EMISSIONS

Year 2019, Volume: 37 Issue: 2, 361 - 372, 01.06.2019

Yusuf Özbakış

Abstract

In this study, the effects on the performance and emissions of a diesel engine operated with excess air by increasing the intake air pressure were investigated. For this purpose, the performance and emissions of a single-cylinder, compression-ignition, naturally aspirated engine at constant speed (2800 rpm) and different loads (25%, 50%, and 100%) were experimentally investigated first fed by natural suction pressure (NA), and then by feeding it with additional intake air pressure of 5, 7.5, 10, 12.5, 15, 17.5 and 20 kPa. As a result of our experiments it was found that by increasing the intake air pressure at certain ratios, brake specific fuel consumption(bsfc)decreased by 18%, CO emission by 78%, HC emission by 70% and soot emission by 63%, while NOx emission is increased by 5%, and exhaust gas temperature decreased.

Keywords

Natural aspiration, boost pressure, diesel engine, performance, exhaust emissions.

References

• [1] Khalife E, Tabatabaei M, Najafi B, Mirsalim SM, Gharehghani A, Mohammadi P, et al. A novel emulsion fuel containing aqueous nano cerium oxide additive in diesel-biodiesel blends to improve diesel engines performance and reduce exhaust emissions: Part I e experimental analysis. Fuel 2017;207:741-50.
• [2] Chase S, Nevin R, Winsor R, Baumgard K. Stoichiometric Compression Ignition (SCI) Engine. SAE paper 2007-01-4224; 2007.
• [3] Lee S, Gonzalez MA, Reitz RD. Stoichiometric Combustion in an HSDI Diesel engine to allow the use of a three-way exhaust catalyst. SAE Paper 2006-01-1148; 2006.
• [4] Lee S, Gonzalez MA, Reitz RD. Effects of engine operating parameters on near stoichiometric diesel combustion characteristics. SAE Paper 2007-01-0121; 2007.
• [5] Neely GD, Sasaki S, Sono H. Investigation of alternative combustion crossing stoichiometric air-fuel ratio for clean Diesel. SAE Paper 2007-01-1840; 2007.
• [6] Kim J., Park SW., Andrie M., Reitz RD. Experimental investigation of intake condition and group-hole nozzle effects on fuel economy and combustion noise for stoichiometric diesel combustion in an HSDI Diesel engine. SAE Paper 2009-01-1123; 2009.
• [7] Kim J, Reitz RD, Park SW, Sung K. Reduction in NOx and CO Emissions in Stoichiometric Diesel Combustion Using a Three-Way Catalyst. J Eng Gas Turbines Power 2010;132(7):22.
• [8] Sung K, Kim J, Reitz RD. Experimental study of pollutant emission reduction for near-stoichiometric diesel combustion in a three-way catalyst. Int J Engine Res 2009;10:349–57.
• [9] Cha J, Kwon S, Kim D, Park S, Effects of equivalence ratio on the near-stoichiometric combustion and emission characteristics of a compression ignition (CI) engine, Fuel Processing Technology, 106 (2013) 215–221.
• [10] Cha J, Yoon S, Lee S, Park S. Effects of intake oxygen mole fraction on the near stoichiometric combustion and emission characteristics of a CI (compression ignition) engine. Energy 2015;80:677–86.
• [11] Tauzia X, Maiboom A, Experimental study of an automotive Diesel engine efficiency when running under stoichiometric conditions, Applied Energy 105 (2013) 116–124
• [12] Luft S, Skrzek T. Effect of the boost pressure on basic operating parameters, exhaust emissions and combustion parametersin a dual-fuel compression ignition engine. Combustion Engines. 2017; 170:115-120.
• [13] Yoshimoto Y, Kinoshita E, Otaka T. Influence of Boost Pressure on the Combustion Characteristics of a Dual Fuel Diesel Engine Ignited by Biofuels with Natural Gas. In The Proceedings of the International Symposium on diagnostics and modeling of combustion in internal combustion engines, The Japan Society of Mechanical Engineers, 2017.9, (p. C204).
• [14] Yang M, Gu Y, Deng K, Yang Z, Zhang Y. Analysis on altitude adaptability of turbocharging systems for a heavy-duty diesel engine. Applied Thermal Engineering 2018; 128: 1196-1207
• [15] Karabektas M. The effects of a turbocharger on the performance and exhaustemissions of a diesel engine fuelled with biodiesel. Renewable Energy 2009;34(4):989–93.
• [16] Luft S, Skrzek T. Effect of the boost pressure on basic operating parameters, exhaust emissions and combustion parameters in a dual-fuel compression ignition engine.Combustion Engines 2017; 56:115-120
• [17] Al-Hinti I, Samhouri M, Al-Ghandoor A, Sakhrieh A. The effect of boost pressure on the performance characteristics of a diesel engine: a neuro-fuzzy approach. Applied Energy 2009;86:113–21.
• [18] Barut E. Design and Implementation of Distributive Gas Fuel Metering System For The Dual Fuel Operation of Diesel Engine, The Thesis Master of Science, Middle East Technical University, Graduate School of Natural and Applied Sciences, Ankara, 1997.
• [19] Abdel-Rahman AA. On the emissions from internal-combustion engines: a review. Int J Energy Res 1998;22(6):483–513.
• [20] Majewski WA, Khair MK. Diesel emissions and their control. SAE International 2006; 303.
• [21] Kutlar A, Ergeneman M, Arslan H, Mutlu M. Taşıt Egzozundan Kaynaklanan Kirleticiler. Birsen Yayınevi, İstanbul, 1998.