Vehicles with internal combustion engines, unlike electric vehicles, require the engine to operate in a narrow range of rates of rotation, requiring a gearbox, operated manually or automatically, to drive the wheels over a wide range of speeds. Globally, 43% of new cars produced in 2015 were manual transmissions, falling to 37% by 2020. [3] .

In this article, we'll work our way through an automatic transmission. We'll start with the key to the whole system: planetary gearsets. Then we'll see how the transmission is put together, learn how the controls work and discuss some of the intricacies involved in controlling a transmission. Location of the automatic transmission.

Most automobiles use a form of automatic transmission called a hydraulic planetary automatic transmission, which is also used in a scaled-up version in some industrial and commercial...

Let's take a look inside an automatic transmission. The key to the modern automatic transmission is the torque converter. It takes the place of a clutch in a manual transmission. A direct...

2021年7月28日 · An automatic transmission uses a different type of gearset than a manual transmission vehicle. It uses a set of planetary gears to create several gear ratios as the automatic transmission's hydraulics controls them.

2018年5月9日 · An automatic transmission usually has more than one planetary gear set. They work together to create multiple gear ratios. Because the gears are in constant mesh in a planetary gear system, gear changes are made without engaging or disengaging gears, like you do on a manual transmission.

Learn how an automatic gearbox and transmission works in a car. With diagrams of planet gears and the sun gear.

2015年12月1日 · An automatic transmission uses one of two kinds of kind of devices, a manual valve or vacuum modulator, to determine how hard the engine is working, increasing pressure as necessary and prohibiting the use of certain gears depending on the gear ratio in use.

2024年2月16日 · How does an automatic transmission work? The automatic transmission is made up of three parts: the torque converter, the planetary gears, and the brake bands and clutches. As the engine...

2024年5月15日 · Automatic transmissions need an oil pump to distribute transmission fluid throughout the system. It assures that the fluid required for lubrication and cooling reaches the torque converter, clutches, and other parts. The key part of …