Dynamics of a Combined DOC−NSRC−SCR Exhaust Gas Aftertreatment System with Periodic Regenerations

Dynamic Behaviour of NOx Storage Catalysts and Combined Exhaust Gas Aftertreatment Systems

Particulate Matter and NOx Exhaust Aftertreatment Systems

Fleet fuel consumption is greatly reduced through the introduction of the HSDI Diesel engine. The reduced fuel consumption is then reflected in a reduction of CO2 emissions. The drop in fuel consumption and CO2 emissions results in a rise in market acceptance, which is also the result of desirable driving performance and greatly improved NVH behavior. The continuously increasing demands on plac...

Catalysts as Sensors—A Promising Novel Approach in Automotive Exhaust Gas Aftertreatment

Sensors that detect directly and in situ the status of automotive exhaust gas catalysts by monitoring the electrical properties of the catalyst coating itself are overviewed. Examples included in this review are the in-situ determination of the electrical impedance of three-way catalysts based on ceria-zirconia solutions and of lean NO(x) traps of earth-alkaline based coatings, as well as appro...

Multiscale Modelling for Automotive Exhaust-Gas Aftertreatment – From the Quantum Chemistry to the Engineering Level

In this work the behaviour of a novel automotive catalytic converter is theoretically investigated using a multiscale-modelling approach. Processes ranging from the nano-scale (chemical reactions) to the macro-scale (transient conversions in a single monolithic channel of a catalyst) are addressed by different modelling techniques. These independent techniques are combined in a hierarchical mul...

Exhaust Gas Recirculation in On·board Diagnostic System

Introduce electronic control exhaust gas recirculation EGR system in the passenger cars and light duty vehicles was made because of fuel direct injectionengines. In this engines temperature combustion process is a higher then other type engine and in this connections NO, emissions were higher to. Simultaneously was appearing problems to electronic exhaust gas recirculation control in connection...