Comparison of Predicted and Measured Diesel Exhaust Emission Levels During Transient Operation 872140
A technique is verified for mapping the exhaust emission levels of a diesel engine during transient operation. Particulate matter, oxides of nitrogen, hydrocarbons, and carbon monoxide emissions were sampled for discrete segments of various transient cycles. Each cycle consisted of four distinct segments. The discrete segments are described by average engine conditions, rate of change variables, and segment length. Regression analysis was used to develop equations relating the emission levels during each segment to the engine parameters.
The regression equations were then used to obtain estimates of composite emission levels of several complex transient cycles that were subsequently tested. These cycles included the EPA heavy-duty transient cycle and two simulated heavy-duty cycles developed for underground mine vehicles. Comparison of the predicted and measured cycle emissions are made for the EPA heavy duty cycle and the simulated mine cycles. Good agreement was obtained between the predicted and measured emission levels.
Citation: Callahan, T., Ryan, T., Martin, S., and Waytulonis, R., "Comparison of Predicted and Measured Diesel Exhaust Emission Levels During Transient Operation," SAE Technical Paper 872140, 1987, https://doi.org/10.4271/872140. Download Citation
Author(s):
Timothy J. Callahan, Thomas W. Ryan, Sherrill F. Martin, Robert W. Waytulonis
Affiliated:
Southwest Research Institute, San Antonio, TX
Pages: 11
Event:
1987 SAE International Fall Fuels and Lubricants Meeting and Exhibition
ISSN:
0148-7191
e-ISSN:
2688-3627
Also in:
SAE 1987 transactions: Fuels and Lubricants-V96-7
Related Topics:
Exhaust emissions
Carbon monoxide
Diesel exhaust emissions
Emissions measurement
Nitrogen oxides
Particulate matter (PM)
Diesel exhaust emissions control
Environmental protection
Hydrocarbons
Emissions
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