Impact of After-Treatment Devices on Biodiesel Engine Particle Number Emission Characteristics

Abstract:

Based on a diesel engine fuelled with BD20 biodiesel, particle number (PN) emission characteristics of the engine equipped with DOC, DOC+DPF and none after-treatment device were investigated respectively by engine bench tests. Results showed that both of DOC and DOC+DPF reduced PN emissions, DOC mainly reduced PN in size range of 30nm~50nm smaller diameter, DPF reduced PN of particles larger than 10nm diameter obviously. PN reduction rate of DOC and DOC+DPF were 5%~35% and 60%~98%, DPF contributed 35%~90% of PN reduction rate on the base of DOC. The after-treatment combination of DOC+DPF was recommended as the device with high efficiency in particle number emission control of biodiesel engine.

• Periodical: Advanced Materials Research (Volume 848)
• Pages: 263-268
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.848.263
• Online since: November 2013
• Authors: Di Yao*, Di Ming Lou, Pi Qiang Tan, Zhi Yuan Hu, Qian Feng
• Keywords: After-Treatment, Bio-Diesel, Diesel Oxidation Catalyst, Diesel Particle Filter, Particle Number

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