Ultra-low NOx emissions diesel demonstrator car

Ultra-low NOx emissions diesel demonstrator car

At the 40th Vienna Motor Symposium in 2019, the Association for Emissions Control by Catalyst (AECC), the International Platinum Group Metals Association (IPA) and the engineering company IAV were able to present the results of their programme that achieved “ultra-low” diesel emissions.

The car performed very well in conditions where NOx emissions are usually higher such as in the city of Berlin, on the German Autobahn with speed limits up to 160 km/h, and in challenging hilly conditions.

Wanting to make best use of the whole system, AECC used a modular approach (see diagram below) when designing its after-treatment system. The first section of after-treatment technology in the exhaust converted NOx into harmless nitrogen in slow city driving, where engine and exhaust temperatures are relatively low. The second section enabled low emissions at higher temperatures, including those generated during fast motorway driving.

This video demonstrates just how low the emissions are, thanks to this smart combination of existing components and technologies. The demo car cuts emissions at each stage of the emissions control system all the way up to the tailpipe.