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http://dx.doi.org/10.7467/KSAE.2016.24.6.619

A Study of Downsizing Effect on Turbocharged LPG Direct Injection(T-LPDI) Engine with Startability Improvement by Optimization of Fuel Control System  

Lim, Jongsuk (Engine System Korea, Continental Automotive Systems Corporation)
Kim, Dowan (Engine System Korea, Continental Automotive Systems Corporation)
Park, Hanyong (Engine System Korea, Continental Automotive Systems Corporation)
Song, Jinoh (R&D Division, Hyundai and Kia Corporate)
Han, Junghwan (R&D Division, Hyundai and Kia Corporate)
Yook, Chulsoo (R&D Division, Hyundai and Kia Corporate)
Park, Seongmin (R&D Division, Hyundai and Kia Corporate)
Shin, Yongnam (Research & Development Center, Motonic Corporation)
Publication Information
Transactions of the Korean Society of Automotive Engineers / v.24, no.6, 2016 , pp. 619-626 More about this Journal
Abstract
The new 1.4 L turbocharged LPG direct injection (T-LPDI) engine is presented in this paper to improve the fuel efficiency of the vehicles installed with the 2.0 L LPG port fuel injection (LPI) engine, while maintaining the performance as a downsizing concept for the new engine platform development. Firstly, the return type high pressure LPG fuel supply system is designed and mounted in the new 1.4 L T-LPDI engine. As a result, this new engine shows a much better WOT performance and approximately 8 % of improved fuel economy level, as compared to the 2.0 L LPI vehicle. Secondly, the LPDI engine specific optimized design for high pressure fuel components and fuel injection control strategies are proposed and evaluated in order to overcome the restartability problem in a heat-soaked condition called the vapor lock phenomenon. Consequently, these experimental results illustrate a great potential for the developed 1.4 L T-LPDI engine as a possible substitute for the 2.0 L LPI engine.
Keywords
T-LPDI; Downsizing; Fuel economy; Particulate matter; Startability; Hot soaking; Vapor lock phenomenon;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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1 D. Schoppe, H. Zhang, G. Rosel, E. Achleitner, F. Kapphan and H. Dupont, "Next Generation Engine Management Systems for Gasoline Direct Injection," Internationales Wiener Motoren-symposium, 2013.
2 Y. Kim, Y. Kim, J. Kang, S. Jun and S. Rew, "An Investigation about Particle Emission Characteristics of a Direct Injection Engine Using Different Fuels," KSAE Annual Conference Proceedings, pp.456-456, 2012.
3 J. Lee, Y. Jung, M. Jung, K. Cha, S. Kwon, J. Kim and S. Park, "Experimental Investigation and Comparison of Nano particle Emission Characteristics in Light-duty Vehicles for Two Different Fuels," Int. J. Automotive Technology, Vol.9, No.4, pp.397-403, 2008.   DOI
4 C. Myung, H. Lee, K. Choi, Y. Lee and S. Park, "Effects of Gasoline, Diesel, LPG and Lowcarbon Fuels and Various Certification Modes on Nanoparticle Emission Characteristics in Light-duty Vehicle," Int. J. Automotive Technology, Vol.10, No.5, pp.537-544, 2009.   DOI
5 J. Park, J. Kim, G. Choi, C. Myung and S. Park, "Study of Nano-particle Characteristics for Direct Injection Engine Fueled with LPG," KSAE Annual Conference Proceedings, pp.668-671, 2011.
6 D. Jin, W. Jang, G. Choi, A. Ko and S. Park, "Characteristic of Particle Number and Exhaust Emission and Engine Behavior with the Charge of Injection Timing in Turbo-charged 1.6 L LPDI Engine," KSAE Spring Conference Proceedings, pp.251-254, 2013.
7 I. Hwang, Y. Choi, J. Jeon, Y. Song and D. Lee, "A Study on the Vapor Lock Phenomenon in LPG Direct Injection System," KSAE Annual Conference Proceedings, pp.262-264, 2014.
8 J. Lim, D. Kim, H. Park, J. Song, J. Han, C. Yook and S. Park, "A Study of Downsizing Effect on Turbocharged LPG Direct Injection (T-LPDI) Engine for Fuel Economy and Performance Improvements," KSAE Annual Conference Proceedings, pp.181-182, 2015.
9 J. Lim, D. Kim, H. Park, J. Song, J. Han, C. Yook, S. Park and Y. Shin, "A Study on Startability Improvement of LPG Direct Injection (LPDI) Engine by Optimization of Fuel System and Control Strategy," KSAE Annual Conference Proceedings, pp.183-184, 2015.
10 D. Kim, S. Lee, J. Lim and S. Lee, "An Experimental Analysis for System Optimization to Reduce Smoke at WOT with Low Volatile Fuel on Turbo GDI Engine," Transactions of KSAE, Vol.23, No.1, pp.97-104, 2015.   DOI