Doctoral Dissertations

Brian C. Kaul

Keywords and Phrases

Exhaust gas recirculation (EGR); Lean burn

Abstract

"Dilute operation is a promising approach for increasing spark-ignition engine efficiency, in the form of either lean burn (air dilution) or EGR (inert dilution). High levels of charge dilution, however, lead to cyclic variability that is largely deterministic in nature. The determinism and nonlinear nature of the system indicate that it should be possible to reduce the cycle-to-cycle variations by implementing an electronic controller. Several needs arise when considering the development of such a controller. Three topics of interest are covered herein. First, a method of analysis for nonlinear dynamical systems is applied to engine data in order to estimate the effect that a controller could have by removing the cycles that contribute to repeated, deterministic sequences...Second, the sensitivity of the engine to variations in control input is evaluated by examining a FFT of heat release data when the injected fuel mass is perturbed in a periodic manner...Finally, a combined thermodynamic and turbulent mass entrainment model was developed to predict energy release for many consecutive engine cycles"--Abstract, page iii.

Advisor(s)

Drallmeier, J. A.

Committee Member(s)

Riggins, David W.
Isaac, Kakkattukuzhy M.
Landers, Robert G.
Sarangapani, Jagannathan, 1965-

Department(s)

Mechanical and Aerospace Engineering

Degree Name

Ph. D. in Mechanical Engineering

Sponsor(s)

National Science Foundation (U.S.)

Publisher

Missouri University of Science and Technology

Publication Date

Spring 2008

Pagination

xiv, 177 pages

Note about bibliography

Includes bibliographical references (pages 170-176).

Rights

© 2008 Brian Christopher Kaul, All rights reserved.

Document Type

Dissertation - Open Access

File Type

text

Language

English

Subject Headings

Internal combustion engines -- Combustion
Spark ignition engines -- Exhaust gas -- Analysis
Spark ignition engines -- Fuel consumption
Spark ignition engines

Thesis Number

T 9332

Print OCLC #

298254299

Electronic OCLC #

226316524

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