With LPG automobile deregulation in 2019, the demand for LPG automobiles has increased in Korea; therefore, a comparison of the eco-friendliness of LPG and other petroleum-based vehicles has become necessary. We conducted a well-to-wheels (WTW) analysis of diesel and LPG fuel in Korea. GREET, PRELIM, and GHGenius models were utilized to calculate and appropriately allocate the energy use and greenhouse gas (GHG) emission in the life cycle process of diesel and LPG fuel. In the well-to-tank (WTT) step, the GHG emissions of LPG were lower than that of diesel because of the lower energy consumption of LPG in fuel production. For the WTW comparison, we selected four automobiles currently sold in Korea and a 1,500 kg curb weight model. The WTW GHG emissions of the LPG automobiles were lower than those of the diesel SUV and the 1 ton truck. On the other hand, the WTW GHG emissions of diesel automobiles were lower in the sedans and in the 1,500 kg model. Finally, it was verified that LPG automobiles were advantageous in terms of GHG emission in the SUV and one-ton truck, although the GHG emissions of diesel and LPG vehicles can vary depending on the fuel economy of the vehicles.

随着2019年LPG汽车的放松管制，韩国对LPG汽车的需求增加了; 因此，有必要将液化石油气与其他石油基车辆的环保性进行比较。我们对韩国的柴油和LPG燃料进行了轮到车轮（WTW）分析。利用GREET，PREPLIM和GHGenius模型来计算和适当分配柴油和LPG燃料生命周期过程中的能源使用和温室气体（GHG）排放。在从油井到油箱（WTT）的步骤中，LPG的温室气体排放低于柴油，因为在燃料生产中LPG的能耗较低。为了进行WTW比较，我们选择了目前在韩国销售的4辆汽车和1,500千克的整备质量。LPG汽车的WTW温室气体排放量低于柴油SUV和1吨卡车的排放量。另一方面，在轿车和1,500公斤模型中，柴油汽车的WTW温室气体排放量较低。最后，证实了柴油和液化石油气车辆的温室气体排放量会根据车辆的燃油经济性而有所不同，但液化石油气汽车在SUV和一吨卡车的温室气体排放方面具有优势。