James Tawadros is a staff member in the Faculty of Engineering’s School of Mechanical and Mechatronic Systems. He is responsible for addressing the needs of first-year mechanical engineering students in terms of their projects and facilitates safety inductions and tool demonstrations.
He has recently been responsible for operating and maintaining the faculty’s state of the art 3D printer.
James is currently studying a Master of Science in Biomedical Engineering at UTS. His research seeks to improve the efficacy and application of Inferior Vena Cava (IVC) filters.
Awadallah, M, Tawadros, P, Walker, P, Zhang, N & Tawadros, J 2017, 'A System Analysis and Modeling of a HEV based on Ultracapacitor Battery', IEEE Transportation Electrification Conference and Expo (ITEC), 2017 IEEE, IEEE, Chicago, Illinois, USA, pp. 792-798.View/Download from: UTS OPUS or Publisher's site
There is a clear shift toward the implementation of electrified vehicles in the market, influenced by the introduction of stricter mandatory regulations on fuel economy improvement and emissions reduction. Of these vehicles, the penetration of hybrid vehicles in the market has much potential for growth in the next few years. The adoption of these vehicles has been limited by the high cost of HEV's, which have less uptake in developing regions. Considering this point, developing countries would see the greatest benefit in adopting HEV technology. A mild hybrid system has an observable advantage in these markets due to its maximum benefit/cost ratio when compared to a full hybrid, plug‐in hybrid or electric vehicles.
This paper discusses the development of a mild hybrid system for such markets with a focus on improving drive performance and efficiency. To achieve this, high power density ultracapacitors are used based on their fast charging and discharging characteristics, together with intelligent drivetrain control taking advantage of the ultracapacitors' characteristics to deliver smooth torque delivery during gear change (torquefilling). A comparison and analysis is undertaken, of both conventional powertrain and an otherwise identical powertrain but for the incorporation of components required for the mild hybrid system. Software models simulated the powertrains in specific driving conditions, with observations made of the advantages of MHEV over conventional drivetrains. The model demonstrated increased fuel efficiency and performance.
Awadallah, M, Tawadros, P, Walker, P, Zhang, N & Tawadros, J 2017, 'A Comparative Fuel Analysis of a novel HEV with conventional vehicle', Proceedings of the 2017 IEEE 85th Vehicular Technology Conference (VTC Spring), Vehicular Technology Conference, IEEE, Sydney, Australia, pp. 1-6.View/Download from: UTS OPUS or Publisher's site
Improvements in fuel economy have always been a dominating driver of vehicle engineering. With some exceptions, benefits attained from hybrid powertrains to transient power delivery has not been the emphasis of research and development efforts. Developing cities around the world would realise significant benefits from improvements to fuel economy, which is outlined in this research by assessing the benefits of a novel HEV architecture. These benefits are compared to a conventional ICEpowered vehicle equivalent, which has an advantage in terms lower upfront costs. The commercial success of HEV implementation, therefore, is determined by its price comparison to conventional vehicles and payback over a number of years of use. This becomes especially important in regions of low-middle income, where the market is much more price-sensitive. The fuel economy of a conventional vehicle and mild hybrid electric vehicle are compared in this paper. This analysis includes vehicle modelling and simulation. Fuel economy is assessed and referenced with standard drive cycles provided by the U.S Environmental Protection Agency. Results demonstrate the benefits of a lower ongoing cost for the HEV architecture.