가솔린엔진의 밸브오우버랩 동안 밸브타이밍이 역류에 미치는 영향 = The Effect of Valve Timing on Backflow during Valve Overlap in a Gasoline Engine

다국어 초록 (Multilingual Abstract)

The backfire could be caused by the backflow of hot burned gas from the cylinder into the intake port. Especially. in the case of gaseous fuel engines. the possibility of backfire occurrence is higher since the ignition temperature is lower than that of liquid fuel.<br/>
In this study. prior to conversion of gasoline engine to LPG engine. the backflow was measured at four different valve timings(type Ⅰ,Ⅱ,Ⅲ,Ⅳ) in a gasoline engine. To quantify the amount of backflow. hot wire anemometry was adopted and its signal was analyzed as the change of temperature and flow in the intake port.<br/>
It was found that the backflow was decreased with increasing the engine load. When the intake valve timing was retarded. the backflow was not found nearly and the power was decreased a little at low engine speed.<br/>

목차 (Table of Contents)

• Abstract
  
• 1.서론
  
• 2.실험장치 및 방법
  
• 3.실험결과 및 고찰
  
• 4.결론
  
• 참고문헌