柴油轿车燃用不同替代燃料的模态排放特性

The Modal Emission Characteristics of a Diesel Car Fueled with Diesel and Alternative Fuels

对国产某柴油轿车分别燃用国Ⅱ柴油、沪Ⅳ柴油、B10、G10和C10等5种燃料时的排放进行了试验研究,分析了其按GB18352.3—2005Ⅰ型循环测试时HC、CO、NOx和CO2的模态排放特性。结果表明,与国Ⅱ柴油相比,燃用B10、C10、G10和沪Ⅳ柴油时的HC、CO、NOx和CO2排放都较低;在GB18352.3—2005Ⅰ型测试循环中,HC排放主要集中在市区循环;CO排放主要集中在市区冷态循环;而NOx和CO2排放则主要集中于市郊循环;在加速阶段,HC、NOx和CO2排放均增加。

An experimental study on the emissions of a diesel car fueled with national II diesel fuel, Shanghai IV diesel fuel and mixed fuels BIO, GIO and CIO is conducted, in which its modal emission characteris- tics of HC, CO, NOx and CO2 with I-type test cycle in GB 18352.3-2005 are analyzed. The results show that compared to national H diesel fuel, the engine fueled with Shanghai II diesel fuel, B10, CIO and G10 has lower emissions of HC, CO, NOx and CO2. With I-type test cycle in GB 18352. 3-2005, the major HC emissions are in urban driving cycles, while CO emissions in urban cold cycle and NOx and CO2 in suburban cycles. In acceleration phase, all HC, NOx and CO2 emissions increase.