What is the difference between electronic continuously variable transmission and continuously variable transmission?
2 Answers
Here is the relevant introduction to the differences between electronic continuously variable transmission and continuously variable transmission: 1. Inclusion and inclusion relationship: The continuously variable transmission can adopt three transmission methods: liquid transmission, electric transmission and mechanical transmission. It uses a transmission belt and a driving wheel and a driven wheel with variable working diameters to transmit power, which can realize the continuous change of the transmission ratio, so as to obtain the best match between the transmission system and the engine working condition. 2. Whether there is a motor involved in the work: The electromagnetic sliding continuously variable transmission is equipped with an electromagnetic slip clutch in the asynchronous motor, and the speed is adjusted by changing its excitation current, which is a relatively backward speed regulation method. The DC motor type realizes speed regulation by changing the magnetic flux or changing the armature voltage. The AC motor type realizes speed regulation by pole changing, voltage regulation and frequency conversion. 3. Different characteristics of transmission The main characteristics of mechanical transmission are stable speed, small sliding rate, reliable operation, constant power mechanical characteristics, high transmission efficiency, simple structure, convenient maintenance and relatively low price; but the processing of parts and lubrication requirements are higher, the bearing capacity is lower, and the anti-overload and impact resistance are poor, so it is generally suitable for medium and small power transmission.
I think the core difference between electronic continuously variable transmission (E-CVT) and traditional continuously variable transmission (CVT) lies in their working structures. CVT relies on mechanical components like pulleys and belts to achieve continuous variation in gear ratios, whereas E-CVT is more like an intelligent system that combines electric motors and engines, utilizing electrical control to achieve shifting effects. In real-world driving, anyone who has driven a hybrid vehicle knows that E-CVT is smoother, reducing acceleration jerkiness because it uses a generator to adjust power output. In comparison, CVT operates smoothly in gasoline cars but sometimes exhibits pulley noise or lag. Both aim for fuel efficiency and smoothness, but E-CVT is better suited for modern eco-friendly models, integrating power more efficiently. From an experience perspective, E-CVT makes starting and low-speed driving almost silent, with electric assistance reducing engine load and significantly enhancing overall comfort. In short, if you're choosing a hybrid vehicle, E-CVT is the evolved version, placing greater emphasis on system integration and responsiveness.