Browse Publications Technical Papers 2000-01-2815
2000-10-16

Class 8 Trucks Operating On Ultra-Low Sulfur Diesel With Particulate Filter Systems: Regulated Emissions 2000-01-2815

Emissions from heavy-duty vehicles may be reduced through the introduction of clean diesel formulations, and through the use of catalyzed particulate matter filters that can enjoy increased longevity and performance if ultra-low sulfur diesel is used. Twenty over-the-road tractors with Detroit Diesel Series 60 engines were selected for this study. Five trucks were operated on California (CA) specification diesel (CARB), five were operated on ARCO (now BP Amoco) EC diesel (ECD), five were operated on ARCO ECD with a Johnson-Matthey Continuously Regenerating Technology (CRT) filter and five were operated on ARCO ECD with an Engelhard Diesel Particulate Filter (DPX). The truck emissions were characterized using a transportable chassis dynamometer, full-scale dilution tunnel, research grade gas analyzers and filters for particulate matter (PM) mass collection. Two test schedules, the 5 mile route and the city-suburban (heavy vehicle) route (CSR), were employed. The ARCO ECD offered reductions (with and without PM aftertreatment) in oxides of nitrogen (NOX) on the order of 15 to 20% relative to CA diesel for both test schedules, although the reductions were not statistically significant (at the 95% confidence level) owing to high vehicle-to-vehicle variability. ECD produced no reduction in PM emissions over CA diesel without aftertreatment, but the PM mass was virtually eliminated on both cycles when ECD was used in conjunction with the CRT and DPX. The aftertreatment devices also served to remove the bulk of carbon monoxide (CO) and hydrocarbon (HC) in the tailpipe emissions. It is concluded that a strategy that employs PM filters with clean diesel may reduce NOx and eliminate most of the mass of other regulated emissions through oxidation. A companion paper, SAE Technical Paper 2000-01-2821, reports on the fleet selection, truck retrofits, operation and cost for these same Class 8 trucks.

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.

Due to current capacity constraints, printed versions of our publications - including standards, technical papers, EDGE Reports, scholarly journal articles, books, and paint chips - may experience shipping delays of up to four to six weeks. We apologize for any inconvenience.
We also recommend:
TECHNICAL PAPER

Heavy Duty Diesel Emission Regulations - Past, Present, and Future

2003-01-0040

View Details

TECHNICAL PAPER

Chassis Dynamometer Emission Measurements from Trucks and Buses using Dual-Fuel Natural Gas Engines

1999-01-3525

View Details

TECHNICAL PAPER

Ways to meet future emission standards for heavy Sports Utility Vehicles - SUV

2000-05-0288

View Details

X