dSPACE Introduces ASM Diesel Exhaust Model

By DE Editors

The dSPACE ASM Diesel Exhaust Model, one of the Automotive Simulation Models (ASMs), provides a virtual diesel exhaust aftertreatment system. In addition to the submodel for urea injection (the selective catalytic reduction system), it includes further submodels for a diesel oxidation catalyst (DOC) and a diesel particle filter (DPF). The simulation model can be used throughout the development process, from controller design in Simulink to ECU testing on a dSPACE simulator. 

The limits for nitrates in diesel engine emissions defined by international standards such as EPA 2010 TIER IV (from the USA's Environmental Protection Agency) and EURO 6 (in the European Union) are becoming increasingly strict, according to dSPACE. Compliance with these tougher limits is not possible without electronically controlled catalytic converters. The company says selective catalytic reduction (SCR) systems that use urea injection (with AdBlue) are an effective solution.

With the model, users have access to all its Simulink blocks. They can view the modeled functions and adapt them to specific requirements themselves. The exhaust model's individual components (DOC, DPF, SCR) can be combined in different ways and configured for the aftertreatment system under test.

The model can be used to represent the physical and chemical processes in modern aftertreatment systems: urea decomposition for catalytic reduction, fuel post-injections for catalytic oxidation, soot particle filtering and DPF regeneration. It contains AdBlue dosing systems with and without air supply and simulates temperature, pressure and lambda sensors.

For more information, visit dSPACE.

Sources: Press materials received from the company and additional information gleaned from the company's website.