Browse Publications Technical Papers 2003-01-0776
2003-03-03

Control of a Urea SCR Catalytic Converter System for a Mobile Heavy Duty Diesel Engine 2003-01-0776

An advanced controller for a urea SCR (Selective Catalytic Reduction) catalytic converter system for a mobile heavy-duty diesel engine is presented. The after-treatment system is composed of the injecting device for urea solution and a single SCR catalytic converter. The control strategy consists of three parts: A primary feedforward controller, a surface coverage observer, and a feedback controller. A nitrogen oxide (NOx) gas sensor with non-negligible cross-sensitivity to ammonia (NH3) is used for a good feedback control performance. The control strategy is validated with ESC and ETC cycles: While the average NH3 slip is kept below 10 ppm, the emission of NOx is reduced by 82%.

SAE MOBILUS

Subscribers can view annotate, and download all of SAE's content. Learn More »

Access SAE MOBILUS »

Preview Document Add to Cart
Members save up to 16% off list price.
Login to see discount.
Special Offer: Download multiple Technical Papers each year? TechSelect is a cost-effective subscription option to select and download 12-100 full-text Technical Papers per year. Find more information here.
We also recommend:
TECHNICAL PAPER

Fuel and System Interaction Effects on Urea-SCR Control of NOx in Diesel Exhaust Aftertreatment

2006-01-0638

View Details

TECHNICAL PAPER

The Influence of Ammonia Slip Catalysts on Ammonia, N2O and NOX Emissions for Diesel Engines

2007-01-1572

View Details

TECHNICAL PAPER

Control Oriented Models for Exhaust Gas Aftertreatment; A Review and Prospects

2003-01-1004

View Details

X