Emission Levels and Catalyst Temperatures as a Function of Ignition-Induced Misfire

Paper #:
  • 920298

Published:
  • 1992-02-01
Citation:
Tyree, C., "Emission Levels and Catalyst Temperatures as a Function of Ignition-Induced Misfire," SAE Technical Paper 920298, 1992, https://doi.org/10.4271/920298.
Author(s):
Pages:
17
Abstract:
EPA has conducted investigations into the effects on emission levels and internal catalyst temperatures versus ignition-induced misfire. These data were obtained on a 1990 Buick LeSabre. These data indicate that: (1) a two percent misfire rate was sufficient to cause hydrocarbon (HC) emission levels to exceed the existing emission standard of 0.41 gm/mile; (2) a four to five percent ignition-induced misfire rate caused the HC emission levels to reach 0.82 gm/mile, or twice the standard, (3) typical FTP average internal catalyst temperatures are below 514°C; and (4) maximum internal catalyst temperatures were below the threshold temperature for thermal degradation (870°C) during ignition-induced misfire below 17 percent.
Access
Now
SAE MOBILUS Subscriber? You may already have access.
Buy
Select
Price
List
Download
$27.00
Mail
$27.00
Members save up to 40% off list price.
Share
HTML for Linking to Page
Page URL

Related Items

Article
2017-03-13
Training / Education
2018-04-09
Training / Education
2017-12-18