Effects of biodiesel on continuous regeneration DPF characteristics

3rd International Conference on Advances in Energy, Environment and Chemical Engineering

能源学;生态环境科学;化学工业

Chen, Tao^1,2 ; Xie, Hui^1 ; Gao, Guoyou^2 ; Wang, Wei^2 ; Hui, Chun^2

School of Mechanical Engineer, Tianjin University, Tianjin

30007, China^1

China Automotive Technology and Research Center, Wuhan

430056, China^2

关键词: Bench tests;    Boost pressure;    Break-even temperatures;    CO conversion;    Engine operations;    Exhaust temperature;    Filtration efficiency;    Particulate deposition;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/69/1/012060/pdf
DOI  :  10.1088/1755-1315/69/1/012060

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

A critical requirement for the implementation of DPF on a modern engine is the determination of Break-even Temperature (BET) which is defined as the temperature at which particulate deposition on the filter is balanced by particulate oxidation on the filter. In order to study the influence of biodiesel on the Regenerating Characteristics of Continuously Regeneration DPF, Bench test were carried out to investigate the BET of a continuously regeneration DPF assembled with a diesel engine fueled with neat diesel and biodiesel. Test results show that at the same engine operation conditions the fuel consumption is higher for biodiesel case, and also the intake air quantity and boost pressure are lower; the BET for the Diesel fuel is about 310 ° while it is about 250 ° for the Biodiesel case. When the engine is at the low torque and low exhaust temperature operation condition, CO conversion rate is extremely low, NO2/NOXratio is small; with the increase of torque and exhaust temperature, CO conversion and NO2/NOXratio increased significantly, and the maximum NO2/NOXratio (about 35%) has been measured at 350 °. In addition, the DPF has better filtration efficiency for biodiesel PM, and the use of biodiesel to engine assembled with DPF has significant benefits.