Modern diesel engines are subject to increasingly stringent emission regulations and monitoring requirements. This three-hour seminar will prepare technicians to effectively diagnose and repair diesel exhaust emission reduction failures by developing an understanding of the emissions created by diesel engines and the systems designed to reduce those emissions. Both pre- and after-treatment systems will be covered. Specific systems and components will include intake air swirl and heating, glow plugs, exhaust gas recirculation, oxidation catalysts, diesel particulate filtration, NOx reduction technologies, selective catalyst reduction, and diesel exhaust fluid. Technicians
will strengthen their diagnostic techniques by focusing on the conditions used
by the Engine Control Module (ECM) to set codes related to these systems, developing an understanding of how false codes could be set, and
determining the root cause of any code or failure. Common failures
will be covered.