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자료유형
학술대회자료
저자정보
이세준 (울산대학교) 김상일 (기아자동차) 임옥택 (울산대학교)
저널정보
한국자동차공학회 한국자동차공학회 추계학술대회 및 전시회 2011년 한국자동차공학회 학술대회 및 전시회
발행연도
2011.11
수록면
403 - 409 (7page)

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DME spray characteristics were investigated about varied ambient pressure and fuel injection pressure using the DME common rail fuel injection system when the nozzle holes diameter is varied. The common rail fuel injection system with DME cooling system was used since DME has properties of compressibility and vaporization in atmospheric temperature. The fuel injection quantity and spray characteristics were measured. The spray analysis parameters were spray shape, penetration length, and spray angle at six nozzle holes. Three types of injector were used, the nozzle holes diameter were 0.166, 0.250, and 0.300㎜. The fuel injection pressure was varied by 5㎫ from 35 to 70㎫ when the ambient pressure was varied 0, 2.5, and 5㎫. When using the 0.300㎜ injector in comparison to the others, the DME injection quantity was increased 1.69 ~ 2.02 times. Through this, it had the similar low heat value with diesel which was injected 0.166㎜ injector. In case of 0.250 and 0.300㎜ injectors, there were assymmetrical spray shapes at initial time. However as time goes by, the spray shape was symmetrical. Among three types of injector, the 0.300mm injector had the fastest development velocity of penetration length. In case of spray angle, the 0.250㎜ injector had the largest spray angle. Through these results, only the way enlargement the nozzle holes diameter is not the solution of DME low heat value problem.

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Abstract
1. 서론
2. 실험장치
3. 실험방법
4. 실험결과
5. 결론
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UCI(KEPA) : I410-ECN-0101-2013-556-001412817