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With the advent of increasingly stringent emissions regulations for both new and existing vehicles, there is a need to manage aftertreatment devices ever more carefully. We have extensive experience in the development of diesel aftertreatment control technology for both OEM and retrofit applications.

Our innovative technology has been developed using re-usable methodologies that enable us to quickly adapt and create solutions for ever more stringent regulations.

As an example we have developed an innovative solution to a problem of soot accumulation in diesel particulate filter (DPF). In automotive applications soot accumulates in the DPF until the high tempeartures cause it to be burnt-off, however, it was found that the exhaust stream on commercial vehicles, such as city buses, may never be hot enough to regenerate the DPF. 

The solution is to artificially boost the exhaust temperature periodically by combusting fuel dosed upstream of the Diesel Oxidation Catalyst (DOC), however, it is challenging to do this while safely keeping the  DOC exit temperature steady at around 600° C.

A derivative of our OpenECU™ M100 proved to have sufficient processing power to implement real-time 1-D thermo-chemical mathematical models of the catalyst and particulate filters. These models predict the internal temperatures, pressures, gas concentrations and particulate levels at all times while the vehicle is being operated and are corrected by information fed back from the temperature and delta-pressure sensors in the exhaust. 

The models were developed initially in simulation using the MATLAB™/Simulink™ tools and were then autocoded for this application using Targetlink™. A standard OpenECU™ M100 enabled rapid prototyping of a real system to test and validate the strategies.