A study on the characteristics of mixture formation and combustion in a PCCI engine using an early multiple injection strategy

Yungjin Kim, Hyungmin Kim, Kibong Kim, Donghoon Lee, Kihyung Lee

Research output: Contribution to conferencePaper

1 Citation (Scopus)

Abstract

Premixed diesel engines have the potential to achieve a more homogeneous and leaner mixture, closer to TDC, than conventional diesel engines. Early studies have shown that in a Premixed Charge Compression Ignition (PCCI) engine, the fuel injection timing and spray angle affect the mixture formation and combustion. The purpose of this study was to investigate the effect of injection timing and a fuel supply system using a narrow angle injector called Narrow Angle Direct Injection (NADI) on combustion and mixture formations. In the case of single injection, at 100° injection angle and 65° injection timing, the mixture became more homogeneous so that the characteristics of IMEP and smoke were better than others. And as the injection times increased, the evaporated fuel percentage increased as well, so we could get higher IMEP and still low smoke characteristics. From this study, we found that the fuel injection timing affects the mixture formation, which in turn affects combustion in the PCCI engine and multiple injections have better effects on combustion because of the higher evaporation rate.

Original languageEnglish
Publication statusPublished - Dec 1 2006
Event10th International Conference on Liquid Atomization and Spray Systems, ICLASS 2006 - Kyoto, Japan
Duration: Aug 27 2006Sep 1 2006

Other

Other10th International Conference on Liquid Atomization and Spray Systems, ICLASS 2006
CountryJapan
CityKyoto
Period8/27/069/1/06

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Keywords

  • Emission
  • IMEP
  • Injection angle
  • Injection timing
  • Premixed Charge Compression Ignition engine

ASJC Scopus subject areas

  • Surfaces, Coatings and Films

Cite this

Kim, Y., Kim, H., Kim, K., Lee, D., & Lee, K. (2006). A study on the characteristics of mixture formation and combustion in a PCCI engine using an early multiple injection strategy. Paper presented at 10th International Conference on Liquid Atomization and Spray Systems, ICLASS 2006, Kyoto, Japan.