What is the at industry?

At in at industry is the abbreviation of the English word automotive transmission, and at industry mainly represents the Automotic Transmission industry in driving tools. In fact, automatic transmission is also called automatic transmission, which is the automatic transmission and manual transmission of driving tools that are often heard in daily life.

Hydraulic automatic transmission is composed of hydraulic torque converter, planetary gear and hydraulic control system, which realizes speed change and torque change through hydraulic transmission and gear combination. Among them, hydraulic torque converter is the most important part of AT, which is composed of pump wheel, turbine and guide wheel, and has the functions of transmitting torque and clutch.

Extended data:

Features of automatic transmission (AT):

AT doesn't use clutch to shift gears, with small shift change, stable connection and simple operation, which brings convenience to drivers and comfort to passengers.

However, AT has many disadvantages. First, it is slow to respond to speed changes and insensitive to manual gears, so many riders like to drive manual gears. Second, the fuel consumption is uneconomical, the transmission efficiency is low and the torque range is limited. The introduction of electronic control technology has improved this problem. Third, the mechanism is complex and it is difficult to repair. The high-speed circulating hydraulic oil in the torque converter will produce high temperature, so the specified high-temperature resistant hydraulic oil should be used.

In addition, if the car cannot be started due to insufficient battery power, it cannot be started by a cart or trailer. If the faulty vehicle is towed away, the driving wheel must be off the ground to protect the automatic wave gear from damage.

Baidu encyclopedia -AT