POWER AND PROPULSION
−− Fibrous, textile cartridges −− Foam-based designs • Flow-through particulate collectors
This three session web seminar will examine the various catalytic processes for lean burn applications, including Selective Catalytic NOx Reduction (SCR), NOx Trap Technologies (i.e. LNT, NSR), and the combination of SCR, NOx Trap and Hydrocarbon NOx Reduction (LNC). It will focus in on SCR NOx fundamentals, equipping participants with the basic concepts for NOx control and important design parameters for SCR NOx catalyst. The course will examine the system design for SCR in diesel applica- tions including passenger cars and heavy duty trucks, including SCR catalysts, SCR integration with diesel particulate filter, key sensor development catalyst durability issues and urea control. Learning Objectives By participating in this web seminar, you will be able to: • Define NOx catalysis and identify key acronyms • Describe in-use issues • Cite key elements in NOx catalyst design for diesel applications • Define SCR design for passenger cars and heavy duty applications • Identify available sensors for SCR catalyst performance monitoring • Determine where lean NOx traps may be appropriate versus SCR NOx control Who Should Attend This web seminar will be especially valuable for mechanical, metallurgical and chemical engineers, materials scientists, and chemists involved in the design, operation and calibration of a NOx emission control system for both mobile and stationary source applications, such as automobiles, trucks, buses, ships, locomotives, stationary engines, small engines, etc. It will also help the newly hired engineer assigned to an emission control team, the seasoned veteran who just transferred to the emission control group, sales people responsible for emission controls, plant managers concerned about meeting new regulations with catalytic controls, and regulators now involved in transmission technologies. Prerequisites Participants should have a basic familiarity with automotive emissions for gasoline engines, diesel engines or off-road applications.
DAY TWO Applications, Performance Optimization and Modeling of Diesel Particulate Filters • Filter backpressure/particulate loading — Porosity, permeability, pore structure issues; Role of catalyst coatings; Filter size effects (length, diameter, cell density, wall thickness); Microstructure of soot deposits (physical and chemical properties); Soot deposition conditions and role on soot structure: Steady state, transients, cycles; Modeling aspects • Filter Regeneration −− Soot reactivity and structure — Oxidation mechanisms (thermal, catalytic, NO2); Kinetic descriptions −− Types of regeneration technologies — Raising exhaust temperature by post-injection and/or by exhaust-port injection in combination with DOxC; Fuel borne additive- assisted regeneration; Catalyst coating-assisted regeneration; Reactive species-assisted regeneration (NO2-assisted, non- thermal plasma, etc.) • Simulation Techniques for Diesel Particulate Filters — Brief history of DPF performance modeling; Backpressure — Theory, insights and lessons; Modeling: demonstrations, validations; Regeneration — Theory, insights and lessons; Modeling: demonstrations, validations −− Ash Effects — Ash production, transport, deposition and thermal history; Ash effects on filter thermal management, catalyst activities, and filter sizing
Instructor:
Athanasios Konstandopoulos and Mansour Masoudi
Fee: $1415
1.3 CEUs
URL:
sae.org/learn/content/c0502/
Catalytic NOx Control Technologies for Diesel and GDI Engines 6 Hours | Web Seminar or On Demand I.D.# WB1237 or PD331237ON
Topical Outline SESSION ONE Lean NOx Catalysis
Lean burn engines (diesel and GDI) boast higher fuel economy and cleaner emissions than conventionally tuned engines while producing equivalent power. They employ higher combustion chamber compression ratios, significant air intake swirl and precise lean-metered direct fuel injection. The downfall of lean-burn technology, however, is increased exhaust NOx emissions (due to higher heat and cylinder pressure) and a somewhat narrower RPM power-band (due to slower burn rates of lean mixtures). Removal of NOx from exhausts is a critical need for emission standards and ambient ozone requirements.
• NOx reduction catalytic approaches • Lean NOx reduction fundamentals • Hydrocarbon NOx reduction (LNC)
• NOx traps technologies (LNT, NSR or NAC) • SCR Cataytic NOx reduction (ammonia based) • Combination SCR/NOx traps
188
3 ways to get a no-obligation price quote to deliver a course to your company: Call SAE Corporate Learning at +1.724.772.8529 | Fill out the online quote request at sae.org/corplearning | Email us at corplearn@sae.org
Made with FlippingBook Online newsletter