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자료유형
학술저널
저자정보
이세준 (울산대학교) 오세두 (자동차부품연구원) 정수진 (자동차부품연구원) 임옥택 (울산대학교)
저널정보
한국자동차공학회 한국자동차공학회논문집 한국자동차공학회논문집 제20권 제2호
발행연도
2012.3
수록면
90 - 97 (8page)

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It is investigated of the DME spray characteristics about varied ambient pressure and fuel injection pressure using the common rail fuel injection system when the nozzle holes diameter is varied. The common rail fuel injection system and fuel cooling system is used since DME has compressibility and vaporization in atmospheric temperature. The fuel injection quantity and spray characteristics were measured. The spray was analyzed of spray shape, penetration length, and spray angle at the six nozzle holes. The 2 types injector were used, the one was 0.166 ㎜ diameter the other one was 0.250 ㎜ diameter. The ambient pressure which is based on gage pressure was 0 MPa, 2.5 ㎫, and 5 ㎫. The fuel injection pressure was varied by 5 ㎫ from 35 MPa to 70 ㎫. When using the converted injector, compared to using the common injector, the DME injection quantity was increased 127 % but it didn’t have the same heat release. Both of the common and converted injector had symmetric spray shapes. In case of converted injector, there were asymmetrical spray shapes until 1.2 ㎳, but after 1.2 ㎳ the spray shape was symmetrical. Compared with the common and converted injector, the converted injector had shorter penetration length and wider spray angle than the common injector.

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Abstract
1. 서론
2. 실험장치
3. 실험방법
4. 실험결과
5. 결론
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UCI(KEPA) : I410-ECN-0101-2013-556-001308281