1989-02-01

Measurement of Diesel Exhaust Emissions with Mini-Dilution Tunnel 890181

A compact transient mini-tunnel (multi-tube type) inducing only a part of the exhaust gas, has been newly developed as a device for measuring the quantity of regulated exhaust emissions in the exhaust gas from diesel engines. This device allows measurement of exhaust emissions even for transient mode operating conditions of the engines, such as U.S. EPA FTP transient mode (FTP mode). The size of this mini-tunnel can be reduced to approximately twenty percent of the dilution tunnel (full-flow tunnel) specified by EPA and the flow rate in the mini-tunnel is a few percent thereof.
The results have been demonstrated that the mass emissions of particulate, CO, NOx and HC measured with the mini-tunnel have good agreement to that measured with the full-flow tunnel under FTP mode and also steady state operating conditions of the engines (correlation coefficients of particulate, CO, NOx and HC are not less than 0.97).

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

A New Type Partial Flow Dilution Tunnel with Geometrical Partitioning for Diesel Particulate Measurement

2001-01-3579

View Details

TECHNICAL PAPER

A Simplified Dilution Tunnel System Intended for Heavy Duty Diesel Development

861279

View Details

TECHNICAL PAPER

Achieving the 2004 Heavy-Duty Diesel Emissions Using Electronic EGR and a Cerium Based Fuel Borne Catalyst

970189

View Details

X