Browse Publications Technical Papers 2001-01-1302

PremAir® Catalyst System - OBD Concepts 2001-01-1302

Traditional approaches to pollution control have been to develop benign, non-polluting processes or to abate emissions at the tailpipe or stack before release to the atmosphere. A new technology called PremAir® Catalyst Systems1 takes a different approach and directly reduces ambient, ground level ozone.
For mobile applications, the new system involves coating a heat exchange device in a vehicle, such as the radiator or air conditioning condenser. The catalyst converts ozone to oxygen as ozone-containing ambient air passes over the coated surface of the radiator. The technology is relatively simple and provides a positive benefit to the environment while being totally passive to the end user application.
Volvo Car Corporation was the first automobile manufacturer to voluntarily introduce the technology on their S80 luxury sedan. Nissan Motor Corporation is also using the technology on their new Sentra CA (Clean Air) certified PZEV vehicle for California. In December 1998 the California Air Resources Board (CARB) agreed to provide emissions credits for adopting the PremAir catalyst system under the LEV program. This provides automobile manufacturers an alternative “tool” for reducing fleet-wide non-methane organic gas (NMOG) vehicle emissions and complying with the LEV requirements. In order to obtain these credits, CARB will require On-Board Diagnostic (OBD) of the catalyst performance. The progress with development of various OBD concepts will be discussed in this presentation.


Subscribers can view annotate, and download all of SAE's content. Learn More »


Members save up to 18% off list price.
Login to see discount.
Special Offer: Download multiple Technical Papers each year? TechSelect is a cost-effective subscription option to select and download 12-100 full-text Technical Papers per year. Find more information here.
We also recommend:

Emission Control Technology to Comply with FTP Revisions


View Details


In-Use Compliance Opportunity for Diesel Powertrains


View Details


Development of a Sulev Capable Technology for a Full Size Gasoline Pfi V8 Passenger Car


View Details