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Power Transmission, Brakes and Cooling Systems
Published in Iqbal Husain, Electric and Hybrid Vehicles, 2021
The final part of the power train is the final drive that reduces the output speed of the transmission/gearbox or drive shaft. It consists of a gear set made of two or more gears working together. The final drive includes the differential that accommodates unequal speeds of the inside and outside wheels when the the vehicle turns around a corner. The differential is necessary for the driven wheels on an axle since they are linked together so that the propulsion unit can transmit power to both the wheels. This is not a concern for the non-driven wheels which are not linked and can spin freely. The power from the differential is transferred to the final drive at the driven wheels by the half-shafts. The half-shafts transmit half of the power coming down the powertrain to the differential. The transmission or the gearbox out of the propulsion unit is not usually in the same plane as the differential; power needs to be transferred across the driveline at an angle. The universal joints (U-joints) and constant-velocity joints (CV-joints) are used to accomplish the task.
Transmission systems
Published in Tom Denton, Automobile Mechanical and Electrical Systems, 2018
The differential is a set of gears that divides the torque evenly between the two drive wheels. The differential allows one wheel to rotate more quickly than the other. As a car goes around a corner, the outside driven wheel travels further than the inside one (Fig. 5.112). The outside wheel must therefore rotate faster than the inside one to cover the greater distance in the same time. Tyre scrub and poor handling would be the result if a fixed axle were used.
Transmission systems
Published in Tom Denton, Advanced Automotive Fault Diagnosis, 2020
The differential is a set of gears that divide the torque evenly between the two drive wheels. The differential also allows one wheel to rotate faster than the other does when necessary. When a car goes around a corner, the outside drive wheel travels further than the inside one. The outside wheel must therefore rotate faster than the inside one to cover the greater distance in the same time.
Modelling and performance analysis of electric vehicle
Published in International Journal of Ambient Energy, 2022
B. Sharmila, K. Srinivasan, D. Devasena, M. Suresh, Hitesh Panchal, R. Ashokkumar, R. Meenakumari, Kishor Kumar sadasivuni, Ronakkumar Rajnikant Shah
Figure 4 shows the simulation of the drivetrain system of the vehicle. The component group delivering power for driving vehicles corresponds to the vehicle’s drivetrain. It consists of a vehicle frame and a drive wheel. The model is developed with a four-wheel-drive system. At the front and rear, two wheels are placed. A drive wheel is a vehicle’s wheel, which transmits force and transforms torque as tractive force from tires to road, causing vehicle to move forward.