Destruction of Carbonaceous Material and Nitrogen Oxides in Conditions of Diesel Exhaust

Patrick Gilot; Frédéric Bonnefoy; Rémy Noirot; Gilles Prado

doi:10.4271/932496

1993-09-01

Destruction of Carbonaceous Material and Nitrogen Oxides in Conditions of Diesel Exhaust 932496

Post-treatment of diesel exhaust was studied on a laboratory scale, using a reactor to simulate the post-combustion of soot collected inside a monolithic particulate trap. A parametric study of the trap regeneration was carried out. A periodic hydrocarbon injection system was developed to assist the catalyzed trap regeneration. This technique led to the trap regeneration with a temperature of the entering gas of 150°C, which is very low. An optimization of the injection process allowed one to minimize the injected amount of hydrocarbons and to have good control of the trap temperature.

Another advantage of the hydrocarbon injection is to provide good conditions for reducing NO in an oxidizing atmosphere (10% O₂). The importance of the hydrocarbon content was pointed out by a parametric study of NO conversion under a wide range of hydrocarbon concentrations (1000 ppm to 2.5% in CH₄ equivalents).

SAE MOBILUS

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

Access SAE MOBILUS »

Digital $37.00 Print $37.00

We also recommend:

Standards

SAE Mobilus®

Publications

News

Events

Professional Development

A World in Motion (PreK-12)

Participate with SAE

SAE Membership

Donate

Destruction of Carbonaceous Material and Nitrogen Oxides in Conditions of Diesel Exhaust 932496

SAE MOBILUS