Investigations into fuel compositional effects on emissions using model and full range fuels suggest aromatic components promote NOx conversion over the catalystSteady state results derived from a single engine (Ricardo Gasoline Fuels Consortium data) show that at a typical part load condition, the catalyst removes NOx 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 NOx, offset by increased catalyst conversion efficiency giving lower tailpipe NOx than isooctane in the vehicle with the better catalyst light-off and AFR control.
NOx Aromatics Effects in Catalyst-Equipped Gasoline Vehicles
Sae Technical Papers
International Fuels & Lubricants Meeting & Exposition ; 1994
1994-10-01
Conference paper
English
NOx aromatics effects in catalyst-equipped gasoline vehicles
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