작동 연료온도가 Bypass type 피에조 인젝터의 분사 특성에 미치는 영향Effects of Working Fuel Temperature on Injection Characteristics of Bypass Type Piezo Injector
- Other Titles
- Effects of Working Fuel Temperature on Injection Characteristics of Bypass Type Piezo Injector
- Authors
- 조인수; 이진욱
- Issue Date
- Jun-2019
- Publisher
- 한국액체미립화학회
- Keywords
- AMESim simulation code(AMESim 해석 코드); Dynamic characteristics(동특성); Piezo stack(피에조 스택); Inverse piezo-electric effect(역압전효과); Fuel temperature(연료 온도)
- Citation
- 한국액체미립화 학회지, v.24, no.2, pp.66 - 72
- Journal Title
- 한국액체미립화 학회지
- Volume
- 24
- Number
- 2
- Start Page
- 66
- End Page
- 72
- URI
- http://scholarworks.bwise.kr/ssu/handle/2018.sw.ssu/34893
- ISSN
- 1226-2277
- Abstract
- Diesel vehicles suffer from poor starting and running problems at cold temperatures. Diesel vehicles have the characteristic that CO and PM are reduced or similarly discharged when going from low temperature to high temperature. In this study, a bypass type piezo injector for electronic control based common rail injection system was used. Numerical analysis using injector drive analysis model was performed to analyze injector drive and internal fuel flow characteristics according to fuel temperature change. The results show that the rate of density change due to the fuel temperature is proportional, and that the effect of the kinematic viscosity is relatively large between -20°C and 0°C. Comparing the results of temperature condition at 0°C and 20°C, it is considered that the viscosity is more correlated with the needle displacement than the pressure chamber of the delivery chamber.
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