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Continuously variable transmission (CVT) is a form of automatic gearbox that has the ability to attain infinite gear ratios. They are used in a variety of automobiles, including scooters, Baja vehicles, and ATVs. The engine’s power is transmitted from the primary to the secondary CVT using a belt and pulley system. By adjusting the diameter of the belt over the pulleys, the notion of infinite gear ratios can be achieved. When the vehicle accelerates and during clutch slippage, a large quantity of heat is created in CVT components, resulting in a shorter component service life. As a result, cooling the CVT is required. Depending on the CVT’s speed, the surface temperature can vary from 80°C to 120°C, according to studies. The primary goal of this study is to use a layer of nitrile rubber in the casing to insulate heat from the engine, utilise engine exhaust backpressure to evacuate hot air from a duct on the CVT casing, and use other forced cooling techniques like air cooling through ducts in the CVT casing. A venturi inside a Y-tube design allows hot air to be sucked out of the CVT.
Continuously variable transmission (CVT) is a form of automatic gearbox that has the ability to attain infinite gear ratios. They are used in a variety of automobiles, including scooters, Baja vehicles, and ATVs. The engine’s power is transmitted from the primary to the secondary CVT using a belt and pulley system. By adjusting the diameter of the belt over the pulleys, the notion of infinite gear ratios can be achieved. When the vehicle accelerates and during clutch slippage, a large quantity of heat is created in CVT components, resulting in a shorter component service life. As a result, cooling the CVT is required. Depending on the CVT’s speed, the surface temperature can vary from 80°C to 120°C, according to studies. The primary goal of this study is to use a layer of nitrile rubber in the casing to insulate heat from the engine, utilise engine exhaust backpressure to evacuate hot air from a duct on the CVT casing, and use other forced cooling techniques like air cooling through ducts in the CVT casing. A venturi inside a Y-tube design allows hot air to be sucked out of the CVT.
<div class="section abstract"><div class="htmlview paragraph">A vehicle-level data acquisition (DAQ) system was developed and implemented on the Lawrence Technological University (LTU) Baja SAE vehicle. This low-cost Arduino-based DAQ system is capable of accurately and repeatedly measuring Baja SAE specific vehicle parameters and storing them for offline analysis. While expandable for the needs of future teams, the developed DAQ system includes measurement of vehicle wheel speed, CVT pulley speeds, suspension position, CVT belt temperature, steering load, and steering angle.</div><div class="htmlview paragraph">The development of the DAQ system architecture and the development of the angular speed and suspension position measurement subsystems are the focus of this work. The processes followed and lessons learned can be used by other Baja SAE and SAE Collegiate Design Series. Each measurement subsystem was designed, fabricated, integrated, and validated on the bench and in-vehicle. Data acquisition software was developed for the DAQ, and offline data processing software was implemented in MATLAB. Finally, the complete system was tested using a combination of industry standard and Baja SAE specific vehicle tests.</div></div>
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