CAJ | 학술논문

利用高精度的移动排放测试仪，对液化天然气巴士和混合动力巴士进行城市典型道路工况下的排放测试，对比分析车辆的排放特征。试验结果表明：液化天然气车较之混合动力车的一氧化碳排放有较大下降，氧化氮排放较为接近，而碳氢化合物排放远高于混合动力巴士；总体而言，LNG车三种污染排放因子随着车速的增加而不断减少，但三种污染物排放速率却随着车速和加速度的变化增减不一；混合动力车因其纯电动起步模式和加速时采用电机辅助驱动，使得其三种污染物在15～20 km/h排放达到最佳，在加速度为0时一氧化碳和碳氢化合物排放达到最大值，而氧化氮在加速度0.5 m/s2附近达到最大。
이용고정도적이동배방측시의，대액화천연기파사화혼합동력파사진행성시전형도로공황하적배방측시，대비분석차량적배방특정。시험결과표명：액화천연기차교지혼합동력차적일양화탄배방유교대하강，양화담배방교위접근，이탄경화합물배방원고우혼합동력파사；총체이언，LNG차삼충오염배방인자수착차속적증가이불단감소，단삼충오염물배방속솔각수착차속화가속도적변화증감불일；혼합동력차인기순전동기보모식화가속시채용전궤보조구동，사득기삼충오염물재15～20 km/h배방체도최가，재가속도위0시일양화탄화탄경화합물배방체도최대치，이양화담재가속도0.5 m/s2부근체도최대。
The emission experiments of LNG (Liqueifed Natural Gas) bus and Hybrid bus on urban roads were carried out with high-precision mobile emission tester. Then the vehicles’ emission characteristics were analyzed. Experimental results show that the CO emission of the LNG vehicle is less than that of the hybrid vehicle, and NOx emissions are relatively close to each other, while the HC emission of the LNG bus is far higher than that of the hybrid bus. Three emission factors of LNG vehicle decrease with the increase of speed, but the emission rates are different with the change of speed and acceleration. Due to the mode of pure electric start and motor auxiliary accelerating of the hybrid bus, the emissions of the three pollutants achieve the least at the speed of 15-20 km/h, and CO and HC emissions reach their maximums at the acceleration of 0 while the NOx emission reach its maximum at the acceleration of around 0.5 m/s2.