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Browsing by Author "Almeida, Pedro Nuno dos Santos"

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  • Contribution to the validation and verification of drive-neutral-reverse subsystem of a CVT transmission
    Publication . Almeida, Pedro Nuno dos Santos; Silva, Francisco José Gomes da
    Continuously Variable Transmissions (CVT) are the synonymous for fuel economy and smooth ride. Due to these major features of this type of automatic transmission (AT) it can be easily the future of automatic transmissions since the restrictions regarding to the fuel emissions are getting stricter. The knowledge by the student related to this thematic was developed in an internship with a duration of six months at a specialized company in the development and production of CVT transmissions. By being incorporated in the department of R&D, specifically on the team of the DNR subsystem (Drive‐Neutral‐Reverse subsystem), it was possible to be introduced to CVT. Punch Powertrain NV in Belgium, Sint‐Truiden, was the perfect opportunity to enrich the academic experience of the student, to introduce the student to development field of automotive transmissions industry from concept to testing and also to consolidate the experience in the automotive industry previously started at Simoldes Plásticos during the master degree. Firstly, it was suggested to assist to the prototype assembly process of a complete CVT followed by the analyses to the flow chart of the DNR subsystem and the manufacturability of all the components of the subsystem in order to get introduced to the subsystem. Secondly it was proposed to develop a showcase model which would be a great tool to explain people the working principle of a DNR subsystem in detail. At the same time, the student decided to start some calculations related to the DNR subsystem not only to better understand the subsystem and apply the knowledge obtained during the graduation but also to learn more specific subjects related to this field of study. This task would later allow the student to verify the mechanical requirements. After asking for quotations and getting in contact with several suppliers it was time to assemble the entire showcase getting in contact with different manufacturing processes and difficulties. At the end, it is irrefutable the amount of knowledge acquired during the internship. Undoubtedly, the support from all the colleagues was very important by transmitting me all their knowledge and experience.
    2017Master thesis Open access Show more