On-Road Gaseous Emission Characteristics of the Bus Based on DOC + CDPF Technology

Abstract:

In this paper, an experimental investigation was conducted using Vehicle Emission Testing System to study on-road gaseous emissions (CO, THC, NO_X, CO₂) characteristics based on diesel oxidation catalyst (DOC) and catalyzed diesel particulate filter (CDPF) technology. The results show that after the implementation of DOC + CDPF device, CO, THC emissions are significantly reduced, while the NO_X, CO₂ emissions remain almost the same. Under steady conditions, the reduction percentages of CO, THC, NO_X, CO₂ emission factors are 56.0%, 66.0%, 18.3%, 17.5%, respectively. Under transient operation conditions, the reduction percentages of CO, THC, NO_X, CO₂ emission factors are found to be 43.2%, 65.9%, 13.7%, 10.9%, respectively. Addition to the THC emission factor, the emission factors of CO, NO_X and CO₂ in transient operation conditions are higher than steady conditions.

• Periodical: Advanced Materials Research (Volumes 726-731)
• Pages: 2234-2240
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.726-731.2234
• Online since: August 2013
• Authors: Di Ming Lou*, Si Li Qian, Zhi Yuan Hu, Pi Qiang Tan
• Keywords: Diesel Buses, DOC + CDPF, Gaseous Emission, On-Road, Vehicle Emissions Testing System

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