Browse Publications Technical Papers 890003
1989-02-01

Automotive Exhaust Emissions at Low Ambient Temperature 890003

Experiments with gasoline and diesel engines has been carried out in a cold chamber at constant ambient temperature ranging from +20°C to −30°C.
The test results showed that in gasoline engines the use of the enrichment devices necessary during cold-start and warm-up period has a major impact on the total emissions of the engines. The carburetted test engines were also found to be quite sensitive to intake air temperature.
In case of a diesel engine cold start and ambient temperature has less effect on emissions because of the differences in mixture formation and combustion process. However, CO and HC emissions increased along with the smoke emission, when test temperature was lowered.

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

Effect of Temperature on Exhaust Emissions

740527

View Details

TECHNICAL PAPER

Experimental Study of the Effects of Intake Temperature on the Performance of Turbocharged Gas-Powered Engines

921494

View Details

TECHNICAL PAPER

Reduction of NOx with Superheated Steam in a DI Diesel Engine

2002-01-1157

View Details

X