The Effects of Discrete Transients in Speed and Load on Diesel Engine Exhaust Emissions Southwest Research institute, San Antonio, TX

Format:

Conference/Event

Author/Creator:

Callahan, Timothy J., author.

Conference Name:

SAE International Congress & Exposition (1985-02-25 : Detroit, Michigan, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 1985

Summary:

The responses of diesel engine exhaust emissions to transients in speed and torque are examined. Particulate matter, hydrocarbons, carbon monoxide, and oxides of nitrogen were sampled for discrete segments of various transient cycles. Each cycle consisted of four distinct segments, two of which were steady state, in general, each segment was defined by choosing the beginning and ending values for speed and torque, and the segment length. Using regression techniques, prediction equations were obtained for each emission. The equations relate the emission levels to engine parameters, which describe each segment. Speed and torque were found to be important variables as were the rates at which speed and torque changed. Transients in torque were found to increase particulate and carbon monoxide emissions. Emission trends for transient speed segments were similar for particulate, carbon monoxide, and nitrogen oxide emissions; id est, emission levels decreased for decelerations and increased for accelerations

Notes:

Vendor supplied data

Publisher Number:

850109

Access Restriction:

Restricted for use by site license