Exhaust Sulfur Oxide Measurement Using Air Dilution Ethyl Corporation

Format:

Conference/Event

Author/Creator:

Griffing, M. E., author.

Conference Name:

National Fuels and Lubricants and Transportation Meetings (1975-06-03 : Houston, Texas, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 1975

Summary:

This paper describes a method for accurately measuring sulfur oxides in automotive exhaust. In this method, the exhaust from a car is diluted with ambient air, then introduced into a large bag filled with clean dry air. The temperature, pressure, and humidity of the diluted exhaust are measured, along with the concentrations of hydrocarbons, carbon monoxide, carbon dioxide, SO2, and sulfates. Bag concentrations are related to the exhaust by using the sulfur/carbon ratio of the fuel. Established instrumental methods are used for the carbon compounds. The sulfur dioxide in the diluted exhaust gas is measured by the West-Gaeke method, which involves collecting a gaseous sample in a scrubber containing potassium tetrachloromecurate. The sulfates are collected on a particulate filter and measured by a new colorimetric method.The techniques we have developed have been applied to both non-catalyst and catalyst-equipped cars. These studies have shown that:Driving on a durability route discharges sulfur from the catalyst bed. Thus, low sulfate emissions are found for the next 150 miles or so while the catalyst stores sulfates

Notes:

Vendor supplied data

Publisher Number:

750697

Access Restriction:

Restricted for use by site license