What does AT stand for in cars?
2 Answers
AT in cars refers to the hydraulic automatic transmission, which achieves automatic shifting through the combination of hydraulic transmission and planetary gears. The hydraulic automatic transmission, also known as the hydraulic automatic gearbox, consists of a torque converter, planetary gears, and a hydraulic control system. The functions of the hydraulic automatic transmission are: 1. Simple and effortless operation, improving driving safety; 2. Achieving continuously variable transmission within a certain range, enhancing the vehicle's power and average speed; 3. Providing smoother acceleration from a standstill; 4. Reducing emission pollution. The principle of the hydraulic automatic transmission is: the position of the accelerator pedal pressed by the driver, the vacuum level of the engine intake manifold, and the vehicle's speed can command the automatic shifting system to operate, controlling the engagement and disengagement of the clutch in the gear mechanism, altering the power transmission path of the gear mechanism, and achieving gear shifts in the transmission.
I found that AT on cars stands for automatic transmission, which makes driving super easy, especially for someone like me who often gets stuck in city traffic. No need to constantly worry about shifting gears and the clutch—just step on the gas and go, which is really hassle-free. The working principle of AT is that the computer and hydraulic system automatically control gear changes, adjusting based on vehicle speed and engine RPM, making the ride smooth and comfortable. There are some drawbacks too, like slightly higher fuel consumption and expensive maintenance costs. Transmission fluid needs to be replaced regularly to avoid system issues. Also, it’s not as direct as a manual transmission when climbing hills or racing, but overall, AT is really suitable for someone like me who prefers relaxed driving, especially reducing fatigue during rainy days or long trips.
