Sulfide Emissions from Catalyst-Equipped Cars

780200

02/01/1978

Event
1978 Automotive Engineering Congress and Exposition
Authors Abstract
Content
An on-stream gas chromatographic technique was developed to analyze grab samples of diluted and undiluted vehicle exhaust for the reduced sulfur compounds which cause rotten-egg odors. This method was used to conduct a brief survey of two cars with modified carburetors, four customer cars with odor problems, and five experimental three-way catalyst cars. The cars were tested on a chassis dynamometer using a driving cycle developed for this study. Hydrogen sulfide and carbonyl sulfide were frequently measured. Ethyl mercaptan and fuel sulfur components were occasionally detected. The sulfides were emitted most often when the catalyst was hot, the space velocity was low and the carburetion was rich. The maximum H2S or COS concentration measured in undiluted exhaust was <10 ppm. Therefore, these emissions pose no known health problem, but can be an odor problem.
Meta TagsDetails
DOI
https://doi.org/10.4271/780200
Pages
12
Citation
Cadle, S., and Mulawa, P., "Sulfide Emissions from Catalyst-Equipped Cars," SAE Technical Paper 780200, 1978, https://doi.org/10.4271/780200.
Additional Details
Publisher
Published
Feb 1, 1978
Product Code
780200
Content Type
Technical Paper
Language
English