The AVL exhaust aftertreatment systems team provides several types of engineering services. From advanced engineering up to start of production projects, both usually include engine test bed or vehicle development. These projects are generally supported with computer calculations. Several tools are utilized to simulate exhaust gas flow, backpressure behaviour or chemical kinetics.
For passenger cars powered by gasoline engines, layout and design of three-way catalysts to reduce HC, CO and NOx emissions, especially HC and CO during cold start, are standard applications. More advanced and therefore one of AVL's focus are development and application of NOx-Adsorber for direct injection gasoline engines operating at lean conditions.
For passenger cars powered by Diesel engines, layout and design of the oxidation catalysts to reduce HC and CO emissions are standard applications. Even though NOx and particulate engine out emissions have already been significantly reduced, they are still remaining subject of environmental concern. Therefore, another focus of AVL are advanced development and application of Diesel particulate filter systems, NOx-catalyst systems and 4-Way catalyst systems.
The exhaust aftertreatment systems team also develops systems for light- and heavy-duty applications. Development of extremely reliable systems to reduce NOx- and PM-emissions is mandatory to fulfill the challenging life-time and service-interval mileage requirements.