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In order to explore the performance of variable transmission use on zero emission urban vehicles, targeting low fuel consumption, a new type of a flat-belt driven CVT was developed. The new Electronic Shift Variable Transmission (ESVT) was build in order to be installed and tested on the ER12 prototype hydrogen fuel cell powered urban vehicle, which is developed by the TUC Eco Racing team at the Technical...
In order to explore the impact of transmission use on the energy/fuel consumption of zero emission vehicles, a 2-speed gearbox was developed and tested. The gearbox is installed on a hydrogen fuel cell powered urban vehicle, the ER14, a prototype designed by the TUC Eco Racing team at the Technical University of Crete. In this work the ER14 is used as a testbed vehicle so as to measure and evaluate...
In this paper we explore the performance capabilities of a new variable transmission system installed on a low fuel consumption, zero emission, prototype urban vehicle. Our focus is on measuring the efficiency of the continuous variable transmission system, namely, the Electronic Shift Variable Transmission (ESVT), which is presented here in a lightweight conceptually simple design as part of the...
This paper presents new innovative subsystems of the ER11 prototype urban vehicle which is powered by hydrogen fuel cells and ultra-capacitors. The subsystems described here are: 1) the energy management system, which is responsible for the optimization of the fuel efficiency and the increased mileage of the vehicle, 2) the driver's monitoring and control panel and 3) the power transmission system,...
A multi-role unmanned surface vehicle (USV) has been recently designed at the Technical University of Crete. This paper highlights the methodology used for the optimized design. A market research was initially performed so as to evaluate the global USV's market. Based on the relevant market findings, certain characteristics and performance specifications were set. An iterative genetic algorithm process...
This paper presents the breadboard of the mechanical slit mask to be designed for the MOSFIRE instrument of the KECK Telescope. This mechanism is designed to function at a cryogenic temperature of 120 K, in vacuum. The reconfigurable mask will allow to form 41 optical slits in a 262 mm times 262 mm field of view. The slit length is fixed and their width can range from 50 mum to 260.5 mm. The slit...
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