Journal of the Korean Society of Industry Convergence (한국산업융합학회 논문집)

The Korean Society of Industry Convergence (한국산업융합학회)
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A Study on Engine Performance Characteristics with Scavenging Condition Variation in 2-Stroke Diesel Engine

2행정 디젤엔진의 소기조건 변화에 따른 엔진의 성능특성에 관한 연구

  • Kim, Gi-Bok (Renault-Samsung Motors Training Team, Co., Ltd.)
  • 김기복 (르노삼성자동차 교육팀)
  • Received : 2019.03.25
  • Accepted : 2019.05.24
  • Published : 2019.06.30
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Abstract

In this study, we experiment by making and designing of compression ignition diesel engine witch has air cooling, 2-cylinder and 2-strokes. Also, we make controller witch can control injection timing and period by arbitrary manual operation for change of injection timing. We also study experimentally in change about pressure and power of combustion chamber by increasing density of air which comes into cylinder because of increasing scavenging pressure. Through this, we confirmed that output change and scavenging pressure can develop performance of the engine by scavenging efficiency of a chamber and development of volume efficiency.

Keywords

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Fig. 1 Design drawing of experiment engine

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Fig. 2 Arrangement diagram of experimental apparatus

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Fig. 3 Cylinder pressure - crank angle diagram for various scavenging pressure at operating conditions; no engine load, injection timing bTDC 9° and engine speed 1,500 rpm

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Fig. 4 Cylinder pressure - crank angle diagram for various scavenging pressure at operating conditions; 30% engine load, injection timing bTDC 9° and engine speed 1,500 rpm

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Fig. 5 Rate of pressure rise - crank angle for various scavenging pressure at operating conditions; 30% engine load, injection timing bTDC 9° and engine speed 1,500 rpm

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Fig. 7 Rate of heat release - crank angle for various scavenging pressure at operating conditions; 30% engine load, injection timing bTDC 11° and engine speed 1,500 rpm

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Fig. 6 Rate of heat release - crank angle for various scavenging pressure at operating conditions; 30% engine load, injection timing bTDC 9° and engine speed 1,500 rpm

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Fig. 8 Mass burned fraction - crank angle for various scavenging pressure at operating conditions; 30% engine load, injection timing bTDC 11° and engine speed 1,500 rpm

Table 1. Specifications of engine

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Table 2. Engine operating condition

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References

  1. G. Borman, "Combustion Engineering", McGraw Hill, 2005.
  2. Chiwon Kim, "Internal Combustion Engineering", Bookshill, 2014.
  3. G. B. Kim, C. W. Kim, C. S. Yoon, "A Study on the Combustion and Performance Characteristics in Compression Ignition CRDI Diesel Engine", KSIC, Vol. 19, No. 1, pp. 31-38, 2016.
  4. C. W. Kim, "New Vehicle Engineering", Chongmungak, 2012.
  5. G. B. Kim, C. S. Yoon, C. H. Baek, K. S. Cho, "A Study on the Performance characteristics in 2-Stroke Diesel Engine", KSMTE Annual Spring Conference, pp. 131, 2018.
  6. G. B. Kim, "The Effect of Scavenging pressure on Performance Characteristics in Two-Stroke Diesel Engine", KSIC, Vol. 21, No. 2, pp. 45-51, 2018.
  7. G. B. Kim, C. W. Kim, C. S. Yoon, " A Study on Combustion characteristics by Scavenging Pressure in Two Stroke CI Diesel Engine", KSMTE Annual Spring Conference, pp. 150, 2016.