Effect of Operation Strategy on First Cycle CO, HC, and PM/PN Emissions in a GDI Engine
Name
8_2015-01-0887 1st cycle emissions.pdf
Size
1.75 MB
Format
Adobe PDF
Checksum (MD5)
619dc27b435b6a690996cfb90f43eb1a
Author(s)
Cheng, Wai K.
Rodriguez, Juan Felipe
Date Issued
April 2015
Journal
SAE International Journal of Engines
Publisher
SAE International
Citation
Rodriguez, J. Felipe, and Wai K. Cheng. “Effect of Operation Strategy on First Cycle CO, HC, and PM/PN Emissions in a GDI Engine.” SAE Int. J. Engines 8, no. 3 (January 20, 2015).
Version
Author's final manuscript
Abstract
The impact of the operating strategy on emissions from the first combustion cycle during cranking was studied quantitatively in a production gasoline direct injection engine. A single injection early in the compression cycle after IVC gives the best tradeoff between HC, particulate mass (PM) and number (PN) emissions and net indicated effective pressure (NIMEP). Retarding the spark timing, it does not materially affect the HC emissions, but lowers the PM/PN emissions substantially. Increasing the injection pressure (at constant fuel mass) increases the NIMEP but also the PM/PN emissions.
MIT Department
Massachusetts Institute of Technology. Department of Mechanical Engineering
Terms of Use
Creative Commons Attribution-Noncommercial-Share Alike
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.4271/2015-01-0887
