Transactions of the Korean Society of Automotive Engineers (한국자동차공학회논문집)

The Korean Society of Automotive Engineers (한국자동차공학회)
권호 표지
DOI QR코드

DOI QR Code

A Study on the Characteristics of Combustion according to Injection Strategy in DISI Engine

직접분사식 가솔린엔진의 분사 비율에 따른 연소특성에 관한 연구

  • In, Byung-Deok (Department of Mechanical Engineering, Graduate School, Hanyang University) ;
  • Park, Sang-Ki (Department of Mechanical Engineering, Graduate School, Hanyang University) ;
  • Lee, Ki-Hyung (Department of Mechanical Engineering, Hanyang University)
  • 인병덕 (한양대학교 대학원 기계공학과) ;
  • 박상기 (한양대학교 대학원 기계공학과) ;
  • 이기형 (한양대학교 기계공학과)
  • Received : 2011.01.17
  • Accepted : 2011.07.08
  • Published : 2012.01.01
Download PDF
⟨ Previous Next ⟩

Abstract

Recently, the important issues of gasoline engine are to reduce the fuel consumption and emission. Thus, many researchers are studying the technology to solve these problems. One approach of these issues is to achieve homogeneous charge combustion and stratified change combustion with various injection strategy. In this study, the combustion characteristics of DISI engine accrding to injection strategy were examined. The effect of injection timing on lean limit A/F were investigated using dual DISI single cylinder. The results show that the engine operation region of dual DISI type engine is larger than that of PFI and DISI type engine cases. Especially, late injection is very effective to extend the operation region more than any other injection timings. In addition, the results show that when the DISI injection ratio is increase, leam limit A/F is improved. It means that the dual injection system car meet with emission regulations and reduce the fuel consumption. Also, combustion pressure of dual injection system is much higher than PFI and DISI injection.

Keywords

References

  1. T. Ikoma, S. Abe, Y. Sonoda, H. Suzuki, Y. Suzuki and M. Basaki, "Development of V-6 3.5-liter Engine Adopting New Direct Injection System," SAE 2006-01-1259, 2006.
  2. M. Koike, A. Saito, T. Tomoda and Y. Yamamoto, "Research and Development of a New Direct Injection Gasoline Engine," SAE 2000-01-0530, 2000.
  3. M. Kanda, T. Baika, S. Kanto, M. Iwamuro, M. Koike and A. Saito, "Application of a New Combustion Concept to Direct Injection Gasoline Engine," SAE 2000-01-531, 2000.
  4. A. Lettori, "The Potential of Next Generation Gasoline Direct Injection Technology," ATA, Vol.56, N.1/2 Gennail/Febbraio, 2003.
  5. J.-O. Olsson, P. Tunestal and B. Johnsson, "Closed Loop Control of an HCCI Engine," SAE 2001-01-1031, 2001.
  6. C. H. Lee and K. H. Lee, "A Study on the Fuel and Mixture Formation in the Early Injection Timing of GDI Injector," Transactions of KSME(B), Vol.26, No.8, pp.1138-1144, 2002.
  7. J. B. Heywood, Internal Combustion Engine Fundamentals, McGraw-Hill, Inc., USA, 1988.
  8. M. F. J. Brunt, H. Rai and A. L. Emtage, "The Calculation of Heat Release Energy from Engine Cylinder Pressure Data," SAE 981052, 1998.
  9. B. Leach, H. Zhao and Y. Li, "Control of Combustion through Injection Timing in a GDI Engine with an Air-assisted Injector," SAE 2005-01-0134, 2005.
  10. C. S. Lee and W. S. Kim, Thermodynamics, Dong-myeong, Korea, pp.635-639, 2000.
  11. K. M. Chun and K. W. Kim, "Methods of Knock Signal Analysis in a S. I. Engine," Transactions of KSAE, Vol.1, No.3, pp.12-21, 1993.