LPG기관의 과류밸브가 가속성능에 미치는 영향에 관한 실험적 연구 = An Experimental Study on the Effects of EFV of LPG Engine on Automobiles Acceration Performance

다국어 초록 (Multilingual Abstract)

This paper is to investigate on the effects of the hole size of spring type EFV(excessive flow valve) for automobiles The analytical and experimental methods were employed to measure the discharge coefficient. choked flowrate and Pressure wave in a bombe, line and vaporizor The size of EFV was determined to meet the legally permitted limits with the capacity of engine displacement up to 2000cc, according to the obtained discharge coefficient. The Purpose of this paper is 1) to find causes of bad acceration performance in LPG engines 2) to find optimal design determination of spring coefficient and orifice hole size of excessive flow valve in LPG engine 3) to find pressure wave of bombe, line and vaporizer through expeimental verification. Experimental results indicated that increase of orifice size 0.5mm to 1mm be caused to increase discharge coefficient, and choked flow rate and decrease operation range of difference pressure wave.

참고문헌 (Reference)

• 1 "LPG에 사용되는 EFV에 관한 연 구" 15 (15): 1982
• 2 "LPG 자동차용 용기밸브의 검사기준" 한국가스안전공사 1996
• 3 "LPG 자동차시스템" 40-49, 1999
• 4 "An experimental and theoretical study of liquid LPG injection" 922363 : 1992