Effects of Secondary Air on the Exhaust Oxidation of Particulate Matters

Event
SAE 2015 World Congress & Exhibition
Authors Abstract
Content
The effects of secondary air on the exhaust oxidation of particulate matters (PM) have been assessed in a direct-injection-spark-ignition engine under fuel rich fast idle condition (1200 rpm; 2 bar NIMEP). Substantial oxidation of the unburned feed gas species (CO and HC) and significant reduction of both the particulate number (up to ∼80%) and volume (up to ∼90%) have been observed. The PM oxidation is attributed to the reactions between the PM and the radicals generated in the oxidation of the feed gas unburned species. This hypothesis is supported by the observation that the reduction in PM volume is proportional to the amount of heat release in the secondary oxidation.
Meta TagsDetails
DOI
https://doi.org/10.4271/2015-01-0886
Pages
10
Citation
Pritchard, J., and Cheng, W., "Effects of Secondary Air on the Exhaust Oxidation of Particulate Matters," SAE Int. J. Engines 8(3):1088-1097, 2015, https://doi.org/10.4271/2015-01-0886.
Additional Details
Publisher
Published
Apr 14, 2015
Product Code
2015-01-0886
Content Type
Journal Article
Language
English