Projeler / Projects
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Browsing Projeler / Projects by Author "Automotive Engineering"
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Research Project Elektrikli bir araç için yüksek verimli güç aktarma organlarının tasarım ve imalatıAutomotive EngineeringAs a result of increasing environmental pollution and inefficient use of resources, global warming is among the most serious problems today. Studies carried out to solve this situation envisage the use of alternative propulsion systems and energy sources in vehicles. In this context, the main goal of this project is the conceptual design, manufacturing and testing of devices called electric motor, charging unit, battery pack and battery management system, which are the four main parts of an electric vehicle. An efficiency target at the IE4 level was determined in the conceptual design of the devices within the system, and the minimum conversion efficiency was determined as 90% according to this standard. While a brushless permanent magnet synchronous motor model was preferred in the motor design, a forward power design with two switches in the charging unit topology was preferred. Battery management system and packaging issues were studied together. In this way, cell voltages, temperatures, cooling method and current protection methods were studied in an integrated manner. The conceptual design and production of the products within the project have been completed and the relevant tests have been carried out. There are generally two methods of engine design in the literature. These are analytical and numerical approaches, and when the necessary processes are followed, the outputs of both methods should be the same. Therefore, both methods were used in this design study. Excel software was used for analytical calculations, and Ansys Rmxprt and 2D Maxwell software was used for numerical calculations.Research Project Otomotiv Mühendisliği Bölümünün Yarış Aracının (ATEV2022) Süspansiyon Sisteminin Optimazasyon ÇalışmasıAutomotive EngineeringThis project is suggesting an optimum design for suspension system of ATEV2020 vehicle (Automotive Engineering Department racing car). Different models of suspension were investigated and compared according to their functionality in the target vehicle. Some parameters like minimum manufacturing error, feasibility in mounting the parts, driver comfort, vehicle stabilitiy and degree of ease in setting steering angles were considered in selection period. The selected mechanism’s CAD model were assembled on the vehicle and its dynamic effects were investigated by composing a model in Matlab software. Matlab/SimMechanics toolbox was used for this kind of simulation. In order to understand the concept of mechanism, 2D model equations are extracted from the literature. Then the model is expanded for 3D application. As the 3D models for suspension system are not available in the literature, it is thought that this kind of study will contribute significantly to the design of suspension system on vehicle prototypes.Research Project Paralel Hibrit Elektrikli Aracın Güç Aktarma Organların Simülasyonu, Tasarımı ve Deney Düzeneği KurulumuAutomotive EngineeringA parallel or mechanically coupled hybrid drivetrain has features that allow both the engine and the traction motor to apply their mechanical power in parallel directly to the drive wheels. The major advantages of a torque-coupling parallel configuration over a series configuration are (1) the non-necessity of a generator, (2) a smaller traction motor, and (3) only part of the engine power going through multi-power conversion. Hence, the overall efficiency can be higher than in the series hybrid. This project is studying the parallel configuration of a hybrid driveline both numerically and experimentally. The mathematical model of driveline was developed in Matlab/Simulink software. Power shifting between Internal Combustion Engine (ICE) and Electric Motor (EM) was carried out by using the appropriate control strategy during the different driving conditions (acceleration, deceleration, and braking). An experimental setup of driveline was established in the ICE laboratory of the Automotive Engineering Department of Atılım University. All experiments were done in controlled conditions. The states of the system (ICE speed, EM speed and torque, Dynamometer load, Battery package voltage, SOC) are measurable to apply a suitable power shifting control method. The Driveline model were tuned by using experimental data.