What are the classification, advantages and disadvantages of transmissions?

The following is an introduction to the classification, advantages and disadvantages of transmissions: gearbox classification: gearboxes can be roughly divided into manual gearboxes and automatic gearboxes. Advantages: the manual transmission is simple in structure, low in manufacturing and maintenance costs and fuel-efficient. Automatic transmission has the advantages of simple and labor-saving operation and improved driving comfort. Disadvantages: Manual gear operation is complicated. Automatic transmission is expensive and consumes more fuel than manual transmission. The following is the extended information about the transmission: Mechanical automatic transmission (at): Its advantages are simple operation, automatic speed change and torque change according to road conditions, effective prevention of engine overspeed and overload, high reliability and mature technology; The disadvantages are complex structure, high precision, troublesome maintenance, low transmission efficiency, high oil consumption and high price of AT gearbox. Continuously variable transmission (CVT): Its main advantages are good driving comfort, enabling the engine to always work in the most economical speed range, good fuel economy and relatively simple structure. The disadvantage is that the transmission steel belt of CVT can bear limited torque, which is not suitable for intense driving and extreme off-road, difficult to maintain and expensive.