Measurements of Unregulated Emissions from General Motors' Light-Duty Vehicles Environmental Science Department General Motors Research Laboratories Warren, Michigan 48090

Format:

Conference/Event

Author/Creator:

Cadle, Steven H., author.

Conference Name:

Passenger Car Meeting and Exposition (1979-06-11 : Dearborn, Michigan, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 1979

Summary:

Sampling and analysis methods for unregulated exhaust constituents are discussed. Emission results for more than fifteen exhaust constituents from both gasoline- and diesel-powered automobiles are presented. It is shown that the catalytic converter substantially lowers the emission rates of aldehydes, benzene, benzo(a)-pyrene, hydrogen cyanide, and nitrogen dioxide. However, under certain rich-malfunction conditions, small increases in hydrogen sulfide, carbonyl sulfide, hydrogen cyanide, and ammonia occur. Particulate emissions are the primary concern for diesels since other unregulated emissions occur at the same low levels as from gasoline-powered vehicles. It is concluded that although steady improvements in chemical analysis technology have led to the detection of more and more minor impurities in exhaust, none of these substances are emitted at concentrations that can be considered dangerous

Notes:

Vendor supplied data

Publisher Number:

790694

Access Restriction:

Restricted for use by site license