What are the two pedals in an automatic transmission?
1 Answers
In an automatic transmission, the two pedals are the brake pedal and the accelerator pedal. Here are the detailed introductions: 1. Function of the brake pedal: It forces a moving car to decelerate or stop as required by the driver; it keeps a parked car stable under various road conditions (including on slopes); and it maintains a stable speed for a car moving downhill. 2. Function of the accelerator pedal: The main purpose of the car accelerator is to speed up the car. Without pressing the accelerator, the car would move at its original speed, which is very slow. Therefore, the accelerator is primarily used to increase the car's speed. The lower the accelerator pedal is pressed, the more fuel the engine takes in, and the faster the car goes. Additional notes: 1. Avoid keeping the gear in D: In vehicles equipped with automatic transmissions, some drivers often only press the brake pedal during traffic jams while keeping the gear lever in D (drive mode) without shifting. If the stop is very brief, this is acceptable. However, if the stop is prolonged, it is better to shift to N (neutral) and engage the parking brake. This is because when the gear lever is in D, the car with an automatic transmission usually has a slight forward movement. Keeping the brake pedal pressed for a long time forcibly stops this movement, causing the transmission fluid temperature to rise and the fluid to degrade, especially when the air conditioning system is running and the engine is idling at a higher speed, which is more detrimental. 2. Avoid coasting in N: Some drivers shift the gear lever to N (neutral) when driving at high speeds or going downhill to save fuel, which can potentially damage the transmission. This is because, in this scenario, the transmission output shaft rotates at a high speed while the engine idles, leading to insufficient oil supply from the transmission oil pump and deteriorating lubrication conditions. For the multi-plate clutch inside the transmission, although the power is cut off, the driven plates rotate at high speeds driven by the wheels, which can easily cause resonance and slippage, resulting in adverse effects.
