가스 분사 시스템에서 연료 레일의 압력 변동에 대한 실험적 연구 = Experimental Study on Pressure Fluctuation of Fuel Rail in Gas Injections System

다국어 초록 (Multilingual Abstract)

The basic phenomena in fuel rail of LPG gaseous injection system is studied through measuring the flow rate of injector and the rail pressure fluctuation. Four injection systems, three are commercial ones and another is newly manufactured one which has reverse "L" type section for preventing undesirable liquid phase injection, were compared with varying number of working injector and engine speed. The results show that flow rate of injector is linearly proportional to injection duration and rail pressure and the pressure fluctuation of rail is up to O.25bar when supply pressure is 1.5bar. Also the results show that the fluctuation decreases as the engine speed increases and crank angle based frequency of the fluctuation is dominated not by number of injector but by engine speed i e injection frequency. Lastly, an increase of the rail volume is very effective for reducing the fluctuation.

목차 (Table of Contents)

• Abstract
  
• 1. 서론
  
• 2. 실험장치 및 방법
  
• 3. 결과 및 고찰
  
• 4. 결론
  
• 후기
  
• References