What does pull mean on a car?
2 Answers
Pull on a car refers to the exhaust brake, which is widely used in large diesel vehicles. A regulating valve is installed on the engine exhaust pipe. By closing this valve, the pressure during the exhaust stroke is increased, and the resulting negative pressure is utilized to generate braking force. The exhaust brake is typically activated by a manual switch. To prevent the engine from stalling when stopping and to avoid exhaust brake operation during fuel injection, the exhaust brake is automatically deactivated when the accelerator pedal or clutch pedal is pressed. Precautions for using the exhaust brake: 1. The exhaust brake cannot replace the service brake for emergency braking or be used as a parking brake. 2. The exhaust brake can be used simultaneously with the service brake. 3. In exhaust brake mode, the fuel injector stops injecting fuel, so users no longer need to consider the engine's economical speed range. 4. The exhaust brake should not be used on icy or snowy roads and should be used cautiously on slippery surfaces. 5. The exhaust brake only becomes effective when the engine speed exceeds 1000 RPM.
The first time I saw the 'pull' label in a car, I also found it strange. Later, I realized it mainly appears on the inner handle of the door. It simply means the English verb 'pull,' reminding you to pull the handle toward yourself to open the door. Some cars also have a small pull ring labeled 'pull' under the left side of the driver's seat, which is the hood release—give it a firm pull, and the front hood will pop open. Occasionally, there's a small curtain inside the trunk marked 'pull' for emergency exit if trapped. In older car models, the 'pull' label on the air conditioning knob indicated that you needed to pull it out to activate the defogging function. In short, don’t overthink it when you see this word—it’s just a directional guide telling you to pull, though the location may vary slightly depending on the car model.
