Masters Theses

Abstract

"A data acquisition and reduction method for modal analysis of undiluted automotive exhaust emissions is presented. 'The procedure on which this method is based ·wa.s developed and presented in a. paper by Donald L. Stivender, in 1971, entitled, "Development of a Fuel-Based Emission Measurement Procedure." This method is presented as a. viable a.1ternative to the diluted constant volume sample by bag collection technique specified in the federal test procedure for emissions from light duty vehicles.

The instrumentation used for the acquisition of data was the type normally used for automotive emission studies. The four instruments used for exhaust gas analysis were: nondispersive infrared carbon dioxide and carbon monoxide analyzers, chemiluminescent oxides of nitrogen analyzer, and a flame ionization hydrocarbon analyzer. In addition to exhaust emissions, fuel consumption and vehicle speed were measured. The static calibration procedure and the time response and time lag characteristics for each instrument are presented. This is followed by a discussion of the data acquisition unit which was constructed for use with this particular system.

The entire data acquisition and reduction system is discussed. This discussion includes the operation of the acquisition and recording system used to gather the data and the computer interfaces and software used to reduce the data. Data reduction includes computation of information such as grams per mile for each pollutant and miles per gallon for the test.

With this method a. great deal of valuable information is obtained in addition to the grams per vehicle mi le of various pollutants. Speci fically, correlated time histories of the measured vari.qbles are availa.ble for ana 1- ysis and development of vehicle systems" -- Abstract, pp. ii-iii

Advisor(s)

Johnson, R. T. (Richard T.)

Committee Member(s)

Riley, Richard K.
Tracey, James H.

Department(s)

Mechanical and Aerospace Engineering

Degree Name

M.S. in Mechanical Engineering

Publisher

University of Missouri--Rolla

Publication Date

1974

Pagination

xi, 149 pages

Note about bibliography

Includes bibliographical references (page 97)

Rights

© 1974 Edward Leroy Mabie, Jr., All rights reserved.

Document Type

Thesis - Open Access

File Type

text

Language

English

Thesis Number

T 4016

Print OCLC #

5981983

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