Browse Publications Technical Papers 2016-01-1006
2016-04-05

Detailed Characterization of Criteria Pollutant Emissions from D-EGR ® Light Duty Vehicle 2016-01-1006

In this study, the criteria pollutant emissions from a light duty vehicle equipped with Dedicated EGR® technology were compared with emissions from an identical production GDI vehicle without externally cooled EGR. In addition to the comparison of criteria pollutant mass emissions, an analysis of the gaseous and particulate chemistry was conducted to understand how the change in combustion system affects the optimal aftertreatment control system. Hydrocarbon emissions from the vehicle were analyzed usin g a variety of methods to quantify over 200 compounds ranging in HC chain length from C1 to C12. The particulate emissions were also characterized to quantify particulate mass and number. Gaseous and particulate emissions were sampled and analyzed from both vehicles operating on the FTP-75, HWFET, US06, and WLTP drive cycles at the engine outlet location. HC emissions were observed to increase with the LTC D-EGR strategy, and a shift in species was observed, with those less reactive fuel components dominating the emission spectrum. Changes in particulate emissions were more complex, with an observed increase in soot mass and number for lightly loaded drive cycles, and a net reduction for highly loaded cycles.

SAE MOBILUS

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

Access SAE MOBILUS »

Members save up to 18% 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

The Benefits of High Injection Pressure on Future Heavy Duty Engine Performance

2015-24-2441

View Details

TECHNICAL PAPER

Computational Study of the Effects of Injection Timing, EGR and Swirl Ratio on a HSDI Multi-Injection Diesel Engine Emission and Performance

2003-01-0346

View Details

TECHNICAL PAPER

Real Time Control of GDI Fuel Injection during Ballistic Operation Mode

2015-24-2428

View Details

X