How the car transmission works ppt

Ask Sven

If a driver is asked how his transmission works, he can explain this in a simple way. But how does a transmission work in detail?

1. Construction

A gearbox is surrounded by a closed housing and contains the following components:

Main shaft
Countershaft
Gears
coupling

2. How the transmission works

In order to shift into a new gear, the clutch pedal must first be depressed. This separates the motor from the gearbox. The main shaft in the transmission comes to a standstill during this process. If a gear is now engaged, the following happens in the transmission:

A so-called shift pawl is moved by the gear lever. This shift claw pushes the shift shaft responsible for the selected gear, on which a shift sleeve is attached, between the gear wheel and the countershaft.
Each shift sleeve is responsible for two gears. In simplified terms, this means:

If the gear lever is moved up or down, the selector sleeve is shifted on the same selector shaft in such a way that another gear is connected to the countershaft.

If the gear lever is moved to the left or right, another shift shaft is moved, which also has a shift sleeve that moves and thus connects two different gears to the shaft.

The shift sleeves are responsible for the fact that a certain gear is connected to the drive shaft, which then transmits the power to the drive wheels. Of course, the car will only continue to move when the clutch pedal is released, so that power can be transmitted between the engine and the transmission.