Does ECVT have a steel belt?
2 Answers
ECVT is a type of continuously variable transmission, and structurally, it also has a steel belt. Here is some relevant information about ECVT: Definition: ECVT is a hybrid transmission integrated with an electric motor. The ECVT transmission is specifically developed for new energy vehicles and hybrid models. ECVT achieves a balance between engine power and motor power by using a gear and two motors (one large and one small). Therefore, the car's engine does not directly drive the vehicle but instead relies on these two motors for power output. Combination Method: ECVT changes the combination of planetary gears to control the motor's speed, thereby adjusting the motor's power and torque. The motor, which plays a crucial role in this process, ensures that both the speed change and torque change are linear. Hence, as long as the power and torque of the engine and motor are well-coordinated, achieving smoothness similar to CVT is not a problem.
I've been repairing cars for decades and have driven many hybrid vehicles. The ECVT is their iconic transmission, used in models like the Toyota Prius. Unlike traditional CVTs, the ECVT doesn't have a steel belt. Traditional CVTs rely on a steel belt sliding between two conical pulleys to change gears, which is prone to wear or breakage. The ECVT, on the other hand, uses a planetary gear set combined with electric motors to achieve gear changes. Power is directly transmitted from the engine to the wheels via the electronic control system, resulting in exceptionally smooth operation without any jerking. Since there's no steel belt, the ECVT is more reliable and durable. Transmission failures in hybrid vehicles are rare, which is a major advantage when I recommend hybrids to friends. Maintenance isn't troublesome either—just check the electronic control unit. In short, the core principle is gear-driven, making it safe and efficient without worrying about belt issues.
