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...

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...

This study is firstly a short review of the types of exhaust systems predicted for Euro 4 (2005) and Euro 5 (2008), particularly focussed on the effects of combined NOx (nitrogen oxides) and PM (particulate matter) aftertreatment systems. Secondly, it explores in detail the implications of using a liquid secondary water-based fuel of urea on board heavy duty diesel vehicles in Europe as a basis...

The article presents a new methodology for traffic emissions modeling by coupled the use of dynamic models with virtual reality driving simulator. former allows drivers’ behavior to be studied through test, focusing attention on how flow conditions combined road geometrical characteristics influence behavior. latter is used model instantaneous vehicle emissions, starting from data provided anal...

Diesel engines continue to be the prime movers in heavy-duty and non-road applications. Optimising controlling engine its exhaust-gas aftertreatment system (ATS) for low fuel consumption pollutant emissions remains a challenging task. Typically, ATS are calibrated separately based on engineering experience. In order exploit full potential of overall system, so-called supervisory control strateg...