NOx Aromatics Effects in Catalyst-Equipped Gasoline Vehicles

A. Le Jeune; C. R. McDonald; R. G. Lee

doi:10.4271/941869

1994-10-01

NOx Aromatics Effects in Catalyst-Equipped Gasoline Vehicles 941869

Investigations into fuel compositional effects on emissions using model and full range fuels suggest aromatic components promote NO_x conversion over the catalyst

Steady state results derived from a single engine (Ricardo Gasoline Fuels Consortium data) show that at a typical part load condition, the catalyst removes NO_x less effectively with lower aromatic fuels. Neither CO nor H₂ contribute significantly to catalyst performance.

Two vehicles were tested over a European cycle. Toluene formed more combustion chamber NO_x, offset by increased catalyst conversion efficiency giving lower tailpipe NO_x than isooctane in the vehicle with the better catalyst light-off and AFR control.

SAE MOBILUS

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

Access SAE MOBILUS »

Digital $33.00 Print $33.00

Preview Document

We also recommend:

Standards

SAE Mobilus®

Publications

News

Events

Professional Development

A World in Motion (PreK-12)

Participate with SAE

SAE Membership

Donate

NOx Aromatics Effects in Catalyst-Equipped Gasoline Vehicles 941869

SAE MOBILUS