Many people are aware of the distinction between automatic and manual transmissions. However, there are far more than just two types of transmissions available. Over the years, several different forms of automatic transmissions have been developed. To determine which option best suits your tastes, consult this guide to the different types of automatic transmissions.
Torque Converter Automatic Transmission
The most common type of automatic transmission gearbox is the torque converter automatic transmission. Most automatic vehicles will have this type of transmission, which uses a hydraulic fluid coupling (i.e., a torque converter) rather than a clutch to change gears. This form of automatic transmission is highly reliable and has become increasingly less expensive over the years due to its wide availability.
Continuously Variable Transmission (CVT)
A continuously variable transmission (CVT) facilitates seamless gear shifts due to its ability to vary the drive ratios continuously depending on the speed of the engine or RPM. Rather than traditional steel gears, a CVT uses a system of belts and pulleys that allows the transmission to work so efficiently. While this type of transmission typically offers good fuel economy and is generally one of the most reliable options, it usually generates a significant amount of engine noise.
Automated Manual Transmission
The automated manual transmission is a type of multi-speed system that has a mechanical design and internal build that closely resembles a manual transmission. However, an automated manual transmission also uses automated elements such as sensors, pneumatics, actuators, and processors to electronically control the clutch and gear selection. Also known as a semi-automatic transmission or a clutchless manual transmission, an automatic manual transmission generally gets high fuel mileage over long distances but may have jerky engine performance at lower speeds.
Dual Clutch Transmission (DCT)
Next up in our guide to the different types of automatic transmissions is a dual-clutch transmission (DCT). Combining elements from both an automatic and manual transmission, a DCT changes gears through the use of two separate shafts that each have their own clutches rather than a torque converter. One shaft changes odd-numbered gears, while the other changes even-numbered ones. This type of transmission is typically the most expensive and complicated. While it can make the process of shifting between higher and lower gears completely seamless and does not require fluid changes, DCTs generally have a noisier operation and are far more costly to repair if an issue arises.
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