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Unformatted text preview: EML 4551 • Ethics and Senior Design Organization • Spring 2011 d
Florida International University • Department of Mechanical and Materials Engineering • Miami SENIOR DESIGN ORGANIZATION PROJECT DESCRIPTIONS Spring 2011 MODULAR RANGE EXTENDER FOR ELECTRICAL BICYCLE Team 4: Jose Amador, Javier Hoyos, Chi‐Hang Cheung In many major cities in the world, gasoline and other gas powered vehicles are the major way to transport from places to places, but in many developing countries such as China and India, the only affordable transportation is through riding bic ycles. With such condition is mind, this project will make the next most affordable means of t ravelling more efficient by developing a range extender for electrical bicycles . In order to extend the range of travel on an electrical b icycle, the battery has to be recharged s
during operation; and to accomplish such task, a clutch actuated electrical generator at the axle and as well as a polarity alternator on the current gene rator will be designed and placed as an add on to the electrical bicycle. Since many compon ents will be added onto the electrical bicycle, this project will include analyzing the front fork and axle design. The main objective is to increase the range of any electrical transportation sy stem by 5‐ 10% by taking advantage of the inertial momentum caused by getting a vehicle up to speed. To do this a simple electrical bicycle will be modified to develop the axle‐mounted ge nerator. The range extender has great potential for global prod uction. In most parts of the world, the bicycle is the most popular mode of transportation. By i ncreasing the range of these vehicles by 5 to 10 percent, the change will make the bicycles mor e efficient for people around the world. The design takes advantage of energy being dissipat ed as heat and noise while the axle‐
mounted generator also supplements the brakes, benef iting the consumer. As a second source of energy, the system will contain a polarity inverter switch allowing the rottle is released. During this electrical motor to be temporarily used as a generator w hen the thr
process, the momentum energy is used to recharge the battery; therefore, increasing the overall efficiency. EML 4551 • Ethics and Senior Design Organization • Spring 2011 Florida International University • Department of Mechanical and Materials Engineering • Miami Global considerations for the modular range extender include developing service manuals in several languages, speedometer and battery charger localization to accommodate different power grids. ...
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