What does AT transmission refer to?
2 Answers
AT transmission refers to the commonly known automatic transmission. Below is relevant information about transmissions: 1. Generally, the gears of an automatic transmission are divided into P, R, N, D, 2, 1, or L. 2. The advantage of this type of transmission is its relatively stable technology, while the main drawbacks include high cost and significant development challenges. 3. However, as the most technologically mature automatic transmission, the AT automatic transmission still has broad development prospects in the future. Differences between AT and AMT transmissions: 1. Structurally: AT transmissions require a connection to a hydraulic torque converter and consist of a clutch, hydraulic automatic shift control system, planetary gear transmission, electronic control system, cooling and oil filtration device, and oil pump. In contrast, AMT transmissions are based on dry clutches and gear transmissions, with an added microcomputer-controlled automatic shifting system. 2. Functionally: AT transmissions do not require a clutch for shifting, have fewer gears with larger changes, and provide relatively smoother power connection during shifts. However, AT transmissions have drawbacks such as slow shift response, limited torque conversion range, and high maintenance difficulty. AMT transmissions achieve shifting through an added microcomputer control system, featuring more gear options to adapt to various complex road conditions, but they tend to have more noticeable shift impacts. 3. Efficiency-wise: AT transmissions rely on a hydraulic torque converter for power transmission, with components operating submerged in oil, which creates some resistance, leading to certain power transmission losses and lower efficiency compared to AMT transmissions. AMT transmissions, being mechanically automated, experience less power loss and no oil resistance, resulting in higher power transmission efficiency. 4. Application-wise: Due to their relatively smooth power connection and high maintenance difficulty, AT transmissions are mostly used in engineering vehicles, machinery vehicles, and buses. AMT transmissions, with simpler maintenance, are more widely applied in trucks.
An AT transmission is an automatic transmission, which means you don't need to shift gears manually while driving. Just press the accelerator or brake, and it shifts gears automatically, making it very easy to use. When I first learned to drive, I used a car with this type of transmission—it saved me the hassle of fumbling with the gear stick, especially in city traffic jams, which was super practical. However, the AT structure is a bit more complex, with components like a torque converter and planetary gears to transfer power, so it offers smoother shifts with less jerkiness. The downside is that it might consume more fuel than a manual transmission and can be more expensive to maintain. I recommend beginners start with this type of car to get comfortable with driving safely, and then try other automatic types like CVT once they're used to it. Overall, AT makes driving more comfortable and is great for daily commuting.
