Assessment of the engine boost modernized according to the rules of downsizing

• Autorzy: Sroka Z. J. , Paropkari M.

Identyfikatory

DOI

10.5604/12314005.1166032

• Języki publikacji: EN

Abstrakty

EN

Downsizing is one of the development trends of internal combustion engine due to its direct impact on fuel economy and indirectly in reducing the emission of carbon dioxide into the atmosphere. Changing the displacement associated with the same engine performance needs support by additional systems, which primarily include the boost. This paper describes downsizing idea, a review of recharging methods and thermodynamic analysis of the combustion process for the chosen engine before and after downsizing taking into account the different variants of boost. The core objective of this study is to downsize a naturally aspirated 1.6L BMW PSA engine by 25% of its initial swept volume and then boosting downsized engine with higher-pressure ratio using the turbocharger set. The study focuses on the analysis of four turbochargers from Garrett turbos. The study winds up with the analysis of engine performance based on the values of compression ratio, air-fuel ratio, polytropic exponents of compression and decompression with keeping the same chemical composition of the fuel. At the end, study was resulted with turbocharger Garrett GT1548 as a the best solution form considered ones, because of: wide range of pressure rate, reasonably sufficient for the engine of this size, enough room (60%) for extracting better performance, lower compression ratio value, which counts the rise of brake mean effective pressure, although to a very little extent and leaner mixture at 1,20 value of the air/fuel ratio with maximum power and reduction of fuel consumption, what was satisfied for downsizing techniques.

Słowa kluczowe

EN

combustion engine; downsizing; boosting

• 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: 2015
• Tom: Vol. 22, No. 3
• Strony: 235--239
• Opis fizyczny: Bibliogr. 10 poz., rys.

Twórcy

autor

Sroka Z. J.

• Wroclaw University of Technology, Faculty of Mechanical Engineering Wybrzeże Wyspianskiego 27, 50-370 Wroclaw, Poland tel.: [phone]

autor

Paropkari M.

• Wroclaw University of Technology, Faculty of Mechanical Engineering Wybrzeże Wyspianskiego 27, 50-370 Wroclaw, Poland tel.: [phone]

Bibliografia

• [1] Fraser, A. D. J., How Low can we go? Challenges and opportunities of engine downsizing to reduce CO2 emissions, Seminar Proceedings IMechE, pp. 1-9, London 2011.
• [2] Heywood, J. B., Internal Combustion Engine Fundamentals, McGraw-Hill International Editions, Singapore 1989.
• [3] Kulażynski, M., Sroka, Z. J., Developing Engine Technology, PrintPap, Lodz 2011.
• [4] Sroka, Z. J., Wybrane zagadnienia teorii tłokowych silników spalinowych w aspekcie zmian objętości skokowej, Oficyna Wydawnicza Politechniki Wrocławskiej, Wroclaw 2013.
• [5] http://en.wikipedia.org/wiki/Internal_combustion_engine.
• [6] https://en.wikipedia.org/wiki/Turbocharger.
• [7] http://www.mtu-online.com.
• [8] http://www.theboombopshop.com/Garrett-Turbo-GT1548-p/garrett-gt1548.htm.
• [9] http://www.turbos.bwauto.com/products/turbochargerCompressor.aspx.
• [10] http://www.turbobygarrett.com/turbobygarrett/compressor_maps.