What is the Difference Between Continuously Variable Transmission and Automatic Transmission?
2 Answers
Continuously Variable Transmission and Automatic Transmission differ in their nature: Continuously Variable Transmission, as the name suggests, is a transmission without fixed gear ratios, meaning it has no distinct gear positions. For example, electric motors utilize Continuously Variable Transmission. On the other hand, Automatic Transmission operates with each gear controlled by a set of clutch plates to achieve gear shifting. Automatic transmissions use solenoid valves to control these clutch plates, making the system simpler and more reliable. The transmission primarily refers to the vehicle's gearbox, which is divided into manual and automatic types. Manual transmissions mainly consist of gears and shafts, achieving speed and torque changes through different gear combinations. Automatic Transmission (AT) is composed of a torque converter, planetary gears, a hydraulic torque conversion system, and a hydraulic control system, achieving speed and torque changes through hydraulic power transmission and gear combinations.
As a new driver who just got my license, I've been researching this comparison recently. The CVT (Continuously Variable Transmission) feels incredibly smooth to drive, with no jerky gear shifts at all, as it adjusts the gear ratio using pulleys and a belt, making speed changes very linear. In contrast, an automatic transmission uses fixed gears like 6-speed or 8-speed, which can feel a bit jerky during acceleration. It feels stable on highways but can be annoying in city traffic jams. In terms of fuel efficiency, CVT is more economical—my small car saves about 1 liter per 100 kilometers in real-world tests, making it more eco-friendly. However, maintenance costs are higher, as the belt needs regular replacement to avoid wear and tear issues. Overall, I lean toward CVT—it's economical, practical, and quiet, perfect for relaxed daily commuting.
