What are the differences between 6AT and CVT automatic transmissions?
1 Answers
Here are the specific differences between 6AT and CVT automatic transmissions: 1. Principle: 6AT: Due to the insufficient torque conversion range of the hydraulic torque converter, multiple planetary gear sets are connected in series behind the turbine to improve efficiency. The hydraulic control system automatically operates the planetary gears according to engine working conditions, achieving automatic speed and torque conversion. CVT: The conical pulleys can tighten or loosen under hydraulic pressure, squeezing the steel belt to adjust the width of the V-shaped groove. When the pulleys move inward to tighten, the steel belt moves outward from the center under pressure, and vice versa. This changes the diameter of the driven pulley, thus altering the gear ratio. 2. Usage: 6AT: It shifts without a clutch, with fewer but more significant gear changes, providing smooth connection. This makes operation easier, offering convenience to drivers and comfort to passengers. CVT: Without traditional transmission gears, there's no shifting process, eliminating shift shock. Therefore, CVT transmissions deliver linear power output, resulting in exceptionally smooth driving experience.