| 제목 |
가시화와 분사율 측정을 통한 비정상 디젤분무의 분석 |
| 분야 |
열유체 및 공조시스템(HVAC) |
| 언어 |
Korean |
| 저자 |
강진석(현대자동차), 배충식(한국과학기술원), 최욱(한국과학기술원) |
| Key Words |
Transient diesel spray(비정상 디젤분무), Injection rate(분사율), Spray visualization(분무가시화), Exposure time(노출시간), Image processing(영상처리) |
| 초록 |
Transient natures of diesel sprays are often characterized with spray visualization, since it is a non-intrusive and straightforward technique to be applied. However, as injection pressure is increased higher than a thousand bar in a modem direct injection diesel engine, very fine temporal and spatial resolutions in the spray visualization are required while sprays become optically denser. Discussed in this paper are macroscopic and microscopic spray visualization techniques and an example of image processing process for efficient and consistent measurement of spray parameters. The injection rate measurement method based on hydraulic pulse principle was suggested as a way of estimating injection velocity for transient diesel sprays. The spray visualization and injection rate measurement techniques were applied to analyze transient diesel sprays from a common-rail injection system and found to be practically effective. |
| 원문(PDF) |
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