For the high-power two- and four-pole continuously variable transmissions , the popular loss accounts for a considerable proportion. The popular loss is mainly composed of the power consumed by the electric fan. Since the heat consumption of high-power continuously variable transmissions is usually lower, the cooling cymbal can be reduced, and then the ventilation power can be reduced. Ventilation power is approximately inversely proportional to the 4-5th power of the fan diameter, so reducing the fan standard can effectively reduce the prevailing loss when the temperature rise is allowed. In addition, a reasonable description of the ventilation plan is also important for the low epidemic loss of forward ventilation power. Because the loss of ventilation is rugged and does not need to increase much cost, changing the fan description is often one of the first methods adopted by this highly efficient stepless transmission. Use axial flow type (especially the blades are airfoil) or backward tilting fan; with suitable shape of the hood, strictly control the deformation and ellipse of the hood; choose high quality low-impact bearings, think about bearing sealing methods and sealing materials , Bearing tightening method and bearing open space, select the lubricating grease with small resistance torque to reduce the popular loss and bearing loss caused by wind rotation.
Because the power of high-power continuously variable transmissions is mainly higher than that of ordinary continuously-variable transmissions, and the thermal load is lower than that of ordinary electrics, the high-speed power continuously-variable transmissions also require less air volume than ordinary continuously-variable transmissions. The size of the outer fan diameter of the continuously variable transmission has a direct impact on the loss and temperature rise of the continuously variable transmission. When determining the diameter of the fan blade, we must consider both the temperature rise of the continuously variable transmission and the non-continuously variable transmission. The transmission loss of the stage transmission should be as small as possible to reduce forward.
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