Oxygen Sensor for CNG Application as ULEV or Tighter Emission Vehicle

980264

02/23/1998

Event
International Congress & Exposition
Authors Abstract
Content
Two distinctive λ sensors have been developed for a compressed natural gas (CNG) vehicle that complies with OBD-II.
As the upstream sensor, there is employed an element which obtains an additional catalyst coating layer to enhance combustion of CH4 and H2 that reaches to the surface of the element. Meanwhile, as the downstream sensor, there is employed an element having an electrode that is intentionally inactive with CH4, to eliminate the temperature dependent chemical reaction of CH4 remaining after the catalyst converter, and to avoid false catalyst monitoring.
Use of the above two kinds of λ sensors enables construction of an O2 feedback system for a CNG engine that complies with OBD-II.
Meta TagsDetails
DOI
https://doi.org/10.4271/980264
Pages
7
Citation
Mizutani, A., Okawa, T., Matsuzaki, H., Kubota, H. et al., "Oxygen Sensor for CNG Application as ULEV or Tighter Emission Vehicle," SAE Technical Paper 980264, 1998, https://doi.org/10.4271/980264.
Additional Details
Publisher
Published
Feb 23, 1998
Product Code
980264
Content Type
Technical Paper
Language
English