What Causes the Engine RPM to Increase When Braking Downhill?

[VanAlyssa]

When going downhill, the vehicle tends to accelerate due to inertia. However, the engine's logic prevents upshifting or allowing excessive speed, maintaining the current gear. To keep both speed and gear unchanged, the engine RPM increases accordingly. This is a normal phenomenon. Below is relevant information: 1. Introduction: As the name suggests, it is a mechanical braking device that slows down the vehicle, also known as a decelerator. 2. Structure: The car's brake pedal is located under the steering wheel. Pressing it activates the brake linkage, transmitting pressure to the brake pads on the brake drum, which then clamp the brake disc. 3. Function: To decelerate or stop the vehicle. The manual parking brake is located beside the gear shift, connected to the brake lever. Common examples also include bicycle brakes, which utilize frame-mounted rod-shaped brakes or disc caliper brakes for deceleration.