An Experimental Study on the Performance Improvement and Emission Reduction in a Turbocharged D.I. Diesel Engine

과급식 디젤엔진의 성능개선 및 배기가스 저감에 관한 실험적 연구

  • 윤준규 (회원, 경원전문대학 자동차정비과) ;
  • 차경옥 (회원, 명지대학교 기계공학과)
  • Published : 2000.09.01

Abstract

The performance improvement and emission reduction in a turbocharged D.I. diesel engine was studied experimentally in this paper. The system of intake port, fuel injection and turbochager are very important factors which have influence on the engine performance and exhaust emission because the properties in the injected fuel depend on the combustion characteristics. Through these experiments it can be expected to meet performance and emission by optimizing the main parameters; the swirl ratio of intake port, fuel injection system and turbocharger. The swirl ratio of intake port was modified by hand-working and measured by impulse swirl meter. Through this steady flow test, we knew that the increase of swirl ratio is decreasing the mean flow coefficient, whereas the gulf factor is increasing. And the optimum results of engine performance and emission are as follows; the swirl ratio is 2.43, injection timing is BTDC 13。 CA, compression ratio is 16, combustion bowl is re-entrant 5$^{\circ}$, nozzle hole diameter is $\Phi$0.28*6, turbocharger is GT40 model which are compressor A/R 0.58 AND turbine A/R 1.19.

Keywords

References

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