Catalytic NOx Control Technologies for Diesel & GDI Engines Web Seminar RePlay
PD331237ON
03/05/2014
- Content
- 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.
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 applications 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.By participating in this course, 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