Classic automatic transmission
A classic automatic transmission (automatic transmission) is a type of transmission in vehicles that automatically changes gears depending on vehicle speed, engine load and throttle position.
Operating principle
A classic automatic transmission consists of the following main components:
* Torque Converter: Transfers torque from the engine to the transmission for smooth gear changes.
* Planetary Gearbox: A combination of gears that allows the gear ratio to be varied.
* Drums: The parts that turn the planetary gears on and off.
* Hydraulic control unit: The brain of the automatic transmission, using sensor signals to control gear shifting.
Operating modes
Classic automatic transmissions usually have several operating modes, including:
* Drive (D): Basic mode that automatically changes gears.
* Park (P): Locks the transmission when the car is stationary.
* Reverse (R): Engages reverse gear.
* Neutral (N): Turns off the transmission, preventing the vehicle from moving.
Advantages of a classic automatic transmission
* Smooth: Provides smooth gear shifting, enhancing driving comfort.
*Easy to use: No manual gear shifting required, making driving easier.
* Engine Protection: Automatically changes gears to keep the engine in the optimal RPM range, protecting it from damage.
Disadvantages of classic automatic transmission
* Fuel Economy: The torque converter may result in a slight decrease in fuel efficiency compared to other transmission types.
*Shift Time: May be slightly slower to shift gears compared to modern transmissions such as CVTs or dual clutch transmissions.
*Maintenance: Requires regular maintenance, including changing transmission fluid and filters.