Automatikgetriebe, wie funktioniert das?

In high-performance cars, automatic transmissions are the best option for easy and reliable driving. In this video we will see in a simple and logical way how this complex mechanism works and for this we will use an Alison Jeans automatic transmission. They are based on the planetary gearbox. To better understand this process, let's first look at the main components of a planetary gearbox. Planetary gears have two inputs and one output. In automatic transmissions, the output rotation is determined by the planet carrier. The two inputs are connected to the high gear and the sun gear. Let's see now what happens to the output speed if the inputs have different speeds?

Here the high speed is fixed and only the sun gear rotates, so the conveyor rotates as it can. see here The orifice wheel also rotates, the orifice speed and the sun gear rotate with it at the same speed, so the entire mechanism moves as a unit. The speed of the top tip increases further when the sun gear is rotated in the opposite direction. The reverse gear results in the automatic transmission, so it is about transmitting different speeds to the top council and the sun gear. The nice thing about automatic transmissions is that speed can be transferred simply by engaging a few clutch packs.

Let's take a look at how this. This is achieved in the Ellison with an automatic transmission, there is no direct connection between the input and output shafts, but rather there is an intermediate shaft. In the middle two coupling packages are used for power transmission. By squeezing the clutch discs, the hub moves. connected to the casing. This is the simplest form of an automatic transmission. Let's now see how first gear works when the first clutch pack is in place. However, when driven, the drive shaft is connected to the intermediate shaft. When actuated, the hole ratchet engages the housing, causing it to stop.

For first gear, only both clutch packs need to be inserted together. Here you can see that the drive shaft is the sun gear. Since the bore ratchet is stationary, the output shaft rotates as shown here at almost one-third the input speed. For additional gear ratios, another planetary gear is required. It is clear that C1 always rotates both sun gears at the speed of the drive shaft. The second planetary gear rotates, but this is where it gets complicated. This planetary carrier is permanently connected to the top gear of the first planetary gear, so if c 1 and c 4 are used together, the output shaft bore rat continues to rotate. the output, so it is similar to first gear, except that the drilling wheel also rotates here, which increases the output speed.

This is the second gear of the transmission, as well as the planet carrier and also a high axle. It will connect directly to the drive shaft via a rotating clutch module. Take a moment to look and understand the layout, the rest is very easy with this structure to get to fourth gear, the direct drive for the direct drive, the high and solar wheels of the. the output should rotate at the speed of the drive shaft with c1 and c2, then the following happens. The sun and bore wheels are connected directly to the drive shaft to get to 6th gear, simply remove c1 and apply c4 here the drive rotation is transferred to the carrier and the high ratchet stops, this combination gives the planetary a very high rotation speed.

The output guarantees high speed. A third planetary gear is now needed to regulate the remaining gear ratios. The planetary gear of this gear is always connected to the drive shaft. as shown here and here also, the output is connected to the transmission from the neighboring gear. This means that c3 always rotates the second gear hole rate. C3 is always used for the remaining gear ratios. For third gear, simply use c1. For fifth gear, c 1 cent bernd and c2 are used and to engage reverse gear, the added C5 high rate clutch is also used because the wheels of the second planetary gear cannot rotate, they rotate like this, so the sun gear it rotates backwards and the output finally rotates in the opposite direction.

A transmission control unit decides when the clutch pack is used, unlike the manual transmission, the automatic transmission has to have a torque converter when the transmission is in gear and we brake the rotation of the engine. separate from the liquid cooled transmission the torque converter helps with this to learn more about torque converters you can watch this video thank you very much