- Aeronautics and Astronautics.
- Graff, Christopher Dominic
- Massachusetts Institute of Technology. Dept. of Aeronautics and Astronautics. Massachusetts Institute of Technology. Dept. of
Aeronautics and Astronautics. Olivier L. de Weck.
- 230 p.
- 11711585 bytes
- 11721301 bytes
- Massachusetts Institute of Technology
- M.I.T. theses are protected by copyright. They may be viewed from this source for any purpose, but reproduction or distribution in any format is prohibited without written permission. See
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- Developing new aftertreatment technologies to meet
emission regulations for diesel engines is a growing problem for
many automotive companies and suppliers. Balancing manufacturing
cost, meeting emission performance, developing competitive engine
power, reducing weight and operational costs are all tradeoffs that
companies and operators have to resolve for new aftertreatment
technologies. However, no single technology has been able to
address the wide range of performance and cost objectives in this
field. The traditional design philosophy of developing components,
optimizing them for particular operation states, and then adding
them together into a system may not yield the best solution to this
complex problem. Manufacturers may not be able to offer the best
balance of performance and cost developing systems in this manner.
Two useful product development tools that can address this issue is
Systems Architecture and multidisciplinary design optimization
(MDO). This thesis develops and exercises a framework for modeling,
designing, analyzing, and optimizing of complex diesel exhaust
- (cont.) The methodology presented addresses the
issue of complexity of systems and their components, and how to use
systems architecture to develop a modeling technique that allows
for flexibility in design, coding and analysis. The framework also
addresses the analysis of exhaust system models, and utilizes
multidisciplinary system design optimization to improve the design
of exhaust systems. It also shows how using a system design and
optimization methodology can yield better system designs than the
more traditional design and development method that addresses only
one technological component at a time. Two case studies are
presented to validate the framework and methodology, and a set of
design solutions for each case are found. A modeling and simulation
tool was also developed for this thesis, and presented. The
valuable information gleaned from this analysis can assist
engineers and designers in identifying design directions and
developing complete diesel emissions treatment
- by Christopher Dominic Graff.
- Thesis (S.M.)--Massachusetts Institute of
Technology, Dept. of Aeronautics and Astronautics,
- Includes bibliographical references (p.
- M.I.T. theses are protected by copyright. They may be
viewed from this source for any purpose, but reproduction or
distribution in any format is prohibited without written
permission. See provided URL for inquiries about
- Instructions in case access is denied
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