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Luleå University of Technology, Department of Engineering Sciences and Mathematics.Olovsson, Daniel Luleå University of Technology, Department of Engineering Sciences and Mathematics. 2016 (English)Independent thesis Advanced level (professional degree), 20 credits / 30 HE creditsStudent thesis

Abstract [en] : The ability to control engine valve timing has the potential to alter the engine performance over the entire operating range. The outcome of valve timing technology enables the possibility to increase efficiency, lowering emissions, increase engine torque, etc. One of the simplest ways to obtain a variable valve timing is to use cam phasers.The dynamics of a hydraulic cam phaser has been studied, three concepts with the purpose to control such an element has been developed using simulation driven product development. Focus have been on robustness, simplicity and implementation. A final concept using on/off solenoids to control a torque driven cam phaser has been designed and simulated in GT-SUITE which validated its performance and functionality. A dynamic model was built in Simulink which simulated the behaviour of the cam phaser and provided tools for optimizing the rotor design.By combining the knowledge of mechanical- and control engineering at Scania, the development process of such machine elements was effective. The outcome of this thesis has given a new perspective in understanding these components and their potentials.

Place, publisher, year, edition, pages: 2016. , 67 p.

Keyword [en] : Variable, Valve Timing, VVT, Cam phaser, Heavy Duty, Scania, Commercial Vehicles, GT-SUITE, Dynamic, On/off valve, Product Development, Machine Element

National Category : Engineering and Technology

Identifiers: URN: urn:nbn:se:ltu:diva-60153OAI: oai:DiVA.org:ltu-60153DiVA: diva2:1045854

External cooperation : Scania CV AB

Educational program: Mechanical Engineering, master's level

Supervisors : Larsson, AndersSCANIA CV AB.

Examiners : Marklund, Pär, Biträdande professorLuleå University of Technology, Department of Engineering Sciences and Mathematics, Machine Elements. Available from: 2016-12-05 Created: 2016-11-06 Last updated: 2016-12-05Bibliographically approved



Author: Eriksson, Mikael

Source: http://ltu.diva-portal.org/







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