Browse Publications Technical Papers 2000-01-2820
2000-10-16

Influence of Aldehyde and Hydrocarbon Components in the Exhaust on Exhaust Odor in DI Diesel Engines 2000-01-2820

This study investigated the influence of aldehyde and hydrocarbon components (HC components) on exhaust odor in DI diesel engines. Aldehyde is an important odorous group in exhaust, and it correlates well with exhaust odor at any engine condition. Formaldehyde (HCHO) in the exhaust has been identified as an important component causing irritating odor.
Water-washing of exhaust gases does not trap HC components, while most of the odorous components are trapped with remarkable odor reductions. This indicates that the HC components in the exhaust have no direct effect on exhaust odor. However, the exhaust odor increases with increases in the concentration of the low boiling point HC components. This maybe due to the increase in intermediate odorous compounds like aldehydes, organic acids, or other oxygenated compounds in the combustion condition where the low boiling point HC components increase.
The ambient temperature effect on exhaust odor was also investigated and it was found that the odor level increases at the low ambient temperature. At low ambient temperatures, the formaldehyde and the other odorous components in the exhaust are dissolved into the water vapor in the exhaust gas when the water vapor is condensed. It is believed that this water-dissolved formaldehyde and other water-dissolved components are responsible for the higher exhaust odor.

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

Effect of Ignition Delay and Exhaust Gas Speed on Exhaust Odor in DI Diesel Engines

2002-01-2883

View Details

TECHNICAL PAPER

Flame Photographs of Light-Load Combustion Point the Way To Reduction of Hydrocarbons in Exhaust Gas

550281

View Details

TECHNICAL PAPER

A Study on the use of Water-Diesel Emulsions in a DI Diesel Engine

2001-28-0005

View Details

X