Browse Publications Technical Papers 2019-26-0141

Catalyst-Based BS VI Stage 2 Emission Control Solutions for Light Duty Diesel 2019-26-0141

Catalyst-based emission control systems continue to provide major environmental benefits, delivering very high reductions of criteria pollutants (CO, HC, NOx, Particulate Matter (PM) and Particle Number (PN)), as well as enabling enhanced fuel efficiency (and therefore reduced CO2 emissions) from Light Duty Diesel (LDD) engines. Today, these systems typically comprise a Diesel Oxidation Catalyst (DOC), Selective Catalytic Reduction Filter (SCRF®), an SCR flow through catalyst, and an Ammonia Slip Catalyst (ASC), and deliver substantial real-world reductions in criteria pollutants. This presentation will summarise the current and future LDD emission regulations and outline the catalyst technologies used to meet today’s legislation, as well as those expected to be required to meet future, incoming regulations in the most effective way. Specific topics will include the development of systems to maximise real world NOx conversion. Challenges associated with the incoming reductions in catalyst operating temperatures will be discussed and data will be presented illustrating potential ways to enable sustained NOx reduction at such low temperatures.


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