| Title: | Unregulated emissions from diesel engine with particulate filter using Fe-based fuel borne catalyst |
| Author(s): | Zhao H; Ge Y; Zhang T; Zhang J; Tan J; Zhang H; |
| Address: | "College of Mechanical & Electronic Engineering, Qingdao University, Qingdao 266071, China. Electronic address: qdlizh@163.com. National Lab of Auto Performance & Emission Test, Beijing Institute of Technology, Beijing 100081, China. College of Mechanical & Electronic Engineering, Qingdao University, Qingdao 266071, China" |
| DOI: | 10.1016/j.jes.2014.08.004 |
| ISSN/ISBN: | 1001-0742 (Print) 1001-0742 (Linking) |
| Abstract: | "The alteration and formation of toxic compounds and potential changes in the toxicity of emissions when using after-treatment technologies have gained wide attention. Volatile organic compound (VOC), carbonyl compound and particle-phase polycyclic aromatic hydrocarbon (PAH) emissions were tested at European Steady State Cycle (ESC) to study unregulated emissions from a diesel engine with a fuel-borne catalyst and diesel particulate filter (FBC-DPF). An Fe-based fuel-borne catalyst was used for this study. According to the results, brake specific emissions of total VOCs without and with DPF were 4.7 and 4.9mg/kWh, respectively, showing a 4.3% increase. Benzene and n-undecane emissions increased and toluene emission decreased, while other individual VOC emissions basically had no change. When retrofitted with the FBC-DPF, total carbonyl compound emission decreased 15.7%, from 25.8 to 21.8mg/kWh. The two highest carbonyls, formaldehyde and acetaldehyde, were reduced from 20.0 and 3.7 to 16.5 and 3.3mg/kWh respectively. The specific reactivity (SR) with DPF was reduced from 6.68 to 6.64mg/kWh. Total particle-phase PAH emissions decreased 66.4% with DPF compared to that without DPF. However, the Benzo[a]pyrene equivalent (BaPeq) with DPF had increased from 0.016 to 0.030mg/kWh. Fluoranthene and Pyrene had the greatest decrease, 91.1% and 88.4% respectively. The increase of two- and three-ring PAHs with DPF indicates that the fuel-borne catalyst caused some gas-phase PAHs to adsorb on particles. The results of this study expand the knowledge of the effects of using a particulate filter and a Fe-based fuel-borne catalyst on diesel engine unregulated emissions" |
| Keywords: | Catalysis *Gasoline Iron/*chemistry *Vehicle Emissions Volatile Organic Compounds/analysis Carbonyl compounds Dpf Fuel-borne catalyst Particle-phase PAHs VOCs; |
| Notes: | "MedlineZhao, Hong Ge, Yunshan Zhang, Tiezhu Zhang, Jipeng Tan, Jianwei Zhang, Hongxin eng Research Support, Non-U.S. Gov't Netherlands 2014/10/08 J Environ Sci (China). 2014 Oct 1; 26(10):2027-33. doi: 10.1016/j.jes.2014.08.004. Epub 2014 Aug 10" |
