Electrically-Heated Catalyst System Conversions on Two Current-Technology Vehicles California Air Resources Board El Monte, CA

Format:

Conference/Event

Author/Creator:

Heimrich, Martin J., author.

Conference Name:

International Congress & Exposition (1991-02-25 : Detroit, Michigan, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 1991

Summary:

AbstractTwo different configurations of electrically-heated catalyst systems were installed on two new production vehicles. A 1990 Buick LeSabre was evaluated with a heated catalyst placed directly in front of the main production catalytic converter while a 1990 Toyota Celica was evaluated with an electrically-heated catalyst placed between the main close-coupled catalytic converter and a smaller downstream production catalytic converter. Initial laboratory studies involved examination of heating strategies to minimize electrical energy requirements, a variety of off-board battery and recharging configurations for their effect on emissions, and multiple air injection strategies to achieve minimum hydrocarbon emissions while avoiding a NOx penalty. Final efforts involved installation of optimized, complete on-vehicle electrically-heated catalyst systems for subsequent on-road mileage accumulation. The vehicle conversions, albeit unaged, exhibited FTP emissions which show promise of meeting the California Ultra-Low Emission Vehicle standards, and have contributed to adoption of low emission standards by the California Air Resources Board

Notes:

Vendor supplied data

Publisher Number:

910612

Access Restriction:

Restricted for use by site license