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Item Information   Holdings       More by this author     Pellmann, Matthew, author.     Milwaukee School of Engineering     Subjects     Turbochargers     Hydraulic control     Trucks -- Motors -- Design and construction     MSE Project.     Browse Catalog     by author:      Pellmann, Matthew, author.      Milwaukee School of Engineering       by title:      Hydraulic control sy...         MARC Display

Hydraulic control system for regenerative hydraulic assisted turbocharger : a report submitted to the faculty of the Milwaukee School of Engineering in partial fulfillment of the requirements for the degree of Master of Science in Engineering / by Matthew Pellmann. by Pellmann, Matthew, author., Milwaukee School of Engineering Subjects Turbochargers   Hydraulic control   Trucks -- Motors -- Design and construction   MSE Project. Description:  94 leaves : illustrations, some of which are in color ; 29 cm. Contents:  Introduction and literature review -- Methods -- Results and discussion -- Conclusions and recommendations -- Appendix A: force and permenance maps -- B: turbine efficiency analysis plots. The purpose of this project was to develop a hydraulic control system for a regenerative hydraulic assisted turbocharger (RHAT) system. The RHAT system consists of a hydraulic pump and turbine mounted on a turbocharger shaft between the exhaust driven turbine and intake compressor, an accumulator, and oil control valve. The hydraulic turbine provides supplemental power at low exhaust energy levels to reduce turbocharger lag during acceleration events. During engine breaking, the hydraulic pump sends oil into an accumulator to store the hydraulic energy. The regenerative aspect is what makes this technology unique over previous hydraulic assisted turbocharger designs. The main focus of this project was to build a one-dimensional simulation model for a medium duty diesel truck engine, including the RHAT system, and oil control valve. It was necessary to characterize the valve through experimental testing and then complete a magnetic FEA model of the solenoid and a CFD model of the poppet to generate the look-up tables for the simulation model. Once the simulation models were verified, they were incorporated into the engine model to demonstrate the performance improvements. The results from the engine model showed approximately 30% faster turbocharger response and engine response. The model also showed that a regeneration cycle was sufficient to recharge the accumulator after a discharge cycle. Form:  text unmediated volume   Copy/Holding information Location Collection Call No. Status   Walter Schroeder Library Master's Theses AC805 .P44 2015 Available Add Copy to MyList Format: HTMLPlain textDelimited Subject:   Email to:

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