The Challenges of Meeting Future Emissions Legislation with a Novel Low Precious Metal TWC Ricardo UK

Format:

Conference/Event

Author/Creator:

Keenan, M., author.

Conference Name:

2004 Powertrain & Fluid Systems Conference & Exhibition (2004-10-25 : Tampa, Florida, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 2004

Summary:

This paper describes the development of a novel low precious metal nano-technology catalyst (Nanocat) and its application in a modern European gasoline vehicle.Three iterations of low precious metal nano-technology catalysts were tested on a Euro 3 certified gasoline vehicle over the European drive cycle (EDC). Engine dynamometer lean spike ageing was used to simulate aged catalysts representing approximately 100 000 km on-road ageing. The fresh and aged nano-technology catalysts were tested and compared to the vehicle production catalyst.The third iteration of fresh nano-technology catalyst met Euro 3 emissions legislation and also met Euro 4 limits for HC and NOx. However, after lean spike ageing the NOx levels exceeded Euro 3 limits but the HC tailpipe remained within Euro 4 limits. The ageing process caused an 18% reduction in the NOx conversion but the HC conversion was maintained.During the vehicle testing non regulated emissions were measured using online Fourier Transform Infra-Red spectroscopy (FTIR). NH3 emissions were measured pre and post catalyst and it is postulated the production of NH3 over the nano-technology catalyst assisted in the NOx conversion

Notes:

Vendor supplied data

Publisher Number:

2004-01-2984

Access Restriction:

Restricted for use by site license