How an automatic transmission should work (Automatic gearbox)
1. Starting the engine:
* When starting the engine, the transmission is in park (P).
* When the selector switch is switched from position P to a driving mode (for example, D or R), the automatic transmission switches to first gear.
2. Driving in first gear:
* The automatic transmission shifts to first gear to provide maximum torque when driving at low speeds or when starting from a stop.
* When a certain speed is reached, the transmission switches to second gear.
3. Shifting to higher gears:
* The automatic transmission automatically shifts to higher gears as speed increases.
*Each gear provides a higher gear ratio, resulting in lower engine speed and improved fuel economy.
4. Downshifting:
* When the speed decreases or when engine braking is necessary, the automatic transmission switches to lower gears.
* This provides traction to the vehicle and helps slow it down.
5. Determination of gear shift moment:
* The automatic transmission uses various parameters to determine when to shift gears, including:
* Motor speed
* Engine load
* Throttle position
*Transmission fluid temperature
6. Collaboration with other systems:
* The automatic transmission works in conjunction with systems such as the engine control unit (ECU) and sensors to optimize engine and transmission performance.
*For example, an automatic transmission may delay shifting at high engine speeds to provide maximum power.
Signs that the automatic transmission is not working properly:
* Delay or slippage when shifting gears
* Zhorka transmission fluid
* Noise or vibration when shifting gears
* Problems starting off or driving at low speeds