Transactions of the Korean Society of Automotive Engineers (한국자동차공학회논문집)

The Korean Society of Automotive Engineers (한국자동차공학회)
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The Effect of Combustion Process by Intensifying the Air Flow in Combustion Chamber of D.I. Diesel Engine

직접분사식 디젤기관의 연소실내 공기유동강화가 연소과정에 미치는 영향

  • Bang, Joong-Cheol (School of Mechanical Engineering, Kumoh National Institute of Technology)
  • 방중철 (금오공과대학교 기계공학부)
  • Published : 2007.09.01
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Abstract

The performance of a direct-injection type diesel engine often depends on the strength of air flow in the cylinder, shape of combustion chamber, the number of nozzle holes, etc. This is of course because the process of combustion in the cylinder was affected by the mixture formation process. In the present paper, high speed photography was employed to investigate the effectiveness of holes penetrated from the bottom of cavity wall to piston crown for some more useful utilization of air. The holes would function to improve mixing of fuel and air by the increase of air flow in the cylinder. The results obtained are summarized as follows, (1) Activated first of the combustion by shorten of ignition timing and rapid flame propagation (2) Raised the combustion peak pressure, more close to TDC the formation timing of peak pressure.

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References

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