Diesel Exhaust Emission Reduction Systems

The Diesel Exhaust Emissions Reduction Systems microcredential covers the latest technologies employed in light and heavy-duty emission reduction systems and is developed for diesel and heavy-equipment technicians, as well as for related Trades to diagnose and repair after treatment systems. Participants will begin with a brief review of emission reduction theory and the tiers of emission control and then will examine the operation, control strategies, and diagnostic procedures for diesel after treatment systems. Participants will then apply this knowledge to diagnose and repair Exhaust Gas Recirculation (EGR) systems, Diesel Particulate Filter (DPF) systems, as well as Selective Catalyst Reduction (SCR) systems. 

By the end of this course of study, learners should be able to:

• Explain how diesel vehicle emissions contribute to the formation of smog
• Examine the operation of Diesel Oxidation Catalytic (DOC) converters, Reduction Catalytic Converters, Diesel Particulate Filters (PDF) and the Exhaust Gas Recirculation (EGR)
• Analyze the performance of a diesel after treatment system by interpreting diesel emission system sensor data using a diagnostic scan tool
• Perform a dosing injector volume test on an after-treatment system
• Diagnose an after-treatment system Diagnostic Trouble Code (DTC) with a scan tool

The Diesel Exhaust Emission Reduction Systems microcredential is imperative for the diagnosis and repair of after treatment systems resulting in the reduction of harmful exhaust emissions. As technology and Government regulations have advanced in recent years, Automotive and Transportation professionals and Apprentices who entered the industry five-plus years ago would not have training on the current emissions systems. Emissions systems continue to change due to stringent emission regulations placed by the Government, and training needs to be current to align with the latest updates. While Canada will transition to low carbon transportation, for the next decade at least Governments, First Nations, and Industry will rely on diesel vehicle and the training is imperative to ensure the reduction of emissions while the sector transitions.