| 제목 |
SCV를 장착한 CNG 엔진의 연소 및 배출가스 특성 |
| 분야 |
전기동력자동차 |
| 언어 |
Korean |
| 저자 |
김진영(동아대학교), 하종률(동아대학교), 박원옥(동아대학교), 공태원(동아대학교) |
| Key Words |
Compressed natural gas(압축천연가스), Swirl control valve(스월조절밸브), Flow(유동), Emission(배출가스), Alternative fuel(대체연료), Turbulence intensity(난류강도) |
| 초록 |
Natural gas is one of the promising altemative fuels because of the abundant deposits and the cleanness of emission gas. CNG has a lot of merits except lower buming speed has a slow disadvantage. One way to overcome the disadvantage is to raise a turbulence intensity. We give various intake for changing turbulence intensity in the cylinder by three kinds of swirl control valve with a way to raise a turbulence intensity. In the present study, a 1.8 ℓ conventional gasoline engine is modified to use a CNG as a fuel instead of gasoline. We try to verify combustion and emission characteristics in each engine parameters. Parameters of experimentation are equivalence ratio, spark timing and intake flow change. The results of this study are as follows. In the case of adding swirl flow, burning speed and torque are increased. But NOx and THC concentration are increased a little respectively. |
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