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Research Abstracts Online
January - December 2011

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University of Minnesota Twin Cities
College of Science and Engineering
Department of Mechanical Engineering

PI: David B. Kittelson

One-Dimensional and Three-Dimensional Modeling of Dynamic Fluid Flows in a Four-Stroke Multi-Cylinder Spark-Ignition Engine

This project’s focus is development of a high-performance four-stroke, multi-cylinder, spark ignition engine featuring an intake restrictor. Computer modeling has been developed to simulate the complex fluid flows occurring inside a four-stroke combustion engine. The use of these models and simulation allows optimization of engine volumetric efficiency. The complex fluid flows are simulated using Ricardo Software’s WAVE 1D and Vectis 3D engine modeling programs. The current work is focused on further intake optimization from previous designs and restrictor design and placement optimization. Exhaust header and muffler design will also be optimized to work in harmony with the intake and restrictor, for an optimized engine system. The simulation work will be followed with the building of intake and exhaust systems that will be tested and validated on an engine dynamometer. Simulation and dynamometer results will be compared and our models will be further refined. Future work will involve camshaft optimization of the lift and duration profiles. The optimized camshaft design will then be analyzed using Ricardo’s Valvdyne software to analyze the feasibility of the optimized camshaft profiles.

Group Members

Helmer Acevedo, Graduate Student
Anil S. Bika, Graduate Student
Luke M. Franklin, Graduate Student
Donald S. Hansen, Undergraduate Student
Sam C. Homan, Undergraduate Student
Donald Horkheimer, Graduate Student
Tom Kornblum, Undergraduate Student
Ian Kugel, Undergraduate Student
Brandon McCarthy, Staff
Zachary McNeil, Undergraduate Student
Gavin Potts, Undergraduate Student
Nicholas D. Richardson, Undergraduate Student
Michael T. Sulgrove, Undergraduate Student
Lei Tian, Graduate Student
Darrick D. Zarling, Staff