Browse Publications Technical Papers 2007-01-1061
2007-04-16

Development of Diesel Engine System with DPF for the European Market 2007-01-1061

Nissan Motor has put on the European SUV market a 2.2-L direct-injection diesel engine with a diesel particulate filter (DPF) system that complies with the EURO IV emission regulations. This paper describes the DPF system, cooperative control of a variable geometry turbo (VGT) and exhaust gas recirculation (EGR), and a high-accuracy lambda control adopted for this engine.
In order to achieve a compact DPF, the high-accuracy lambda control was developed to reduce variation in engine-out particulate matter (PM) emissions. Moreover, the accuracy of the technique for predicting the quantity of PM accumulation was improved for reliable detection of the DPF regeneration. Prediction error for PM accumulation increases during transient operation. Control logic was adopted to correct the PM prediction according to lambda fluctuation detected by an observer for lambda at cylinder under transient operating conditions. The observer is corrected lambda sensor output. Corrected coefficient is learned and store in ECU. Thus, improved the accuracy of lambda control.

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

Study on Catalyzed-DPF for Improving the Continuous Regeneration Performance and Fuel Economy

2007-01-0919

View Details

JOURNAL ARTICLE

Single Sequential Turbocharger: A New Boosting Concept for Ultra-Low Emission Diesel Engines

2008-01-0298

View Details

TECHNICAL PAPER

Understanding the Role of Filtered EGR on PM Emissions

2011-01-2080

View Details

X