MSOE Library Home	Login My List - 0 Help
	Home   Search   My Account

Basic Advanced Power History

Search:  Author KeywordsBarcodeBib No.Call Number Keyword Search (Enter part of a call number -- use wildcards)General Keyword SearchKeyword Search of Contents NotesKeyword Search of Credits Notes (Enter word or words)Keyword Search of FormatKeyword Search of Item DescriptionKeyword Search of Publisher's NameName Keyword SearchPublication Date Keyword SearchSearch Part of an ISBN NumberSearch Part of an ISSN NumberSeries Title KeywordsSubject KeywordsTitle Keywords       Refine Search     > You're searching: Walter Schroeder Library, Milwaukee School of Engineering

Item Information   Holdings       More by this author     Hanks, Thomas C.     Subjects     Internal combustion engines -- Testing     Automobiles -- Motors     Hydraulic control     Computer simulation     MSE Project.     Browse Catalog     by author:      Hanks, Thomas C.       by title:      Development and simu...         MARC Display

Development and simulation of a control system for an electrohydraulic open center gas exchange valve actuator system for camless internal combustion engines / by Thomas C. Hanks. by Hanks, Thomas C. Subjects Internal combustion engines -- Testing   Automobiles -- Motors   Hydraulic control   Computer simulation   MSE Project. Description:  90 leaves : ill. ; 29 cm. Contents:  Nomenclature -- Review of literature -- Methodology -- Simulation and results -- Conclusions and recomendations -- References -- Bibliography -- Appendix A: Matlab code. If realized, the camless internal combustion engine offers significant advantages over the engines on the market today in the areas of efficiency, fuel economy, and emissions reduction. One barrier to development is the amount of power consumed by the camless valvetrains when compared to standard valvetrains. In previous work completed, a model of a system that exhibited much lower power consumption was created in AMESim. As a next step, this paper details the development and simulation of a control system for the model. A method of linking Matlab/Simulink with AMESim, each used to simulate the controller and physical system respectively, was proven and used. The controller developed for the simulation utilized a position feedback signal from the actuator. A second reference signal, engine crank angle, was also used to generate the crank angle and crank speed of the engine. Both signals, in the simulation, were sampled at a rate of 1E-5 seconds. The simulation results showed that the controller developed is capable of adjusting to changes in engine speed, operating temperature, and flow rates. Errors resulting from changes in residual cylinder pressure were not acceptable and on the order of 5 degrees for valve opening angle at 5000 RPM with a one bar change in residual cylinder pressure. Possible system design changes and controller upgrades to reduce this error are discussed. Changes in input displacement were also examined with the worst case error identified as less than 0.75 millimeters after a single cycle. Using the outlet valve of the system as a means to control seating velocity and closing angle was also investigated. The results showed that, as currently designed, it is not possible and other possible solutions to control these parameters are discussed.   Copy/Holding information Location Collection Call No. Status   Walter Schroeder Library Master's Theses AC805 .H358 2004 Available Add Copy to MyList Format: HTMLPlain textDelimited Subject:   Email to:

Horizon Information Portal 3.25_9885

© 2001-2013 SirsiDynix All rights reserved.