What is the Principle of Hill Descent Control?
1 Answers
The principle of this HDC system is to combine engine braking with the ABS anti-lock braking system to maintain the vehicle in a state of "low speed without losing tire grip" when descending steep slopes. HDC must be activated when the transmission is in 1st gear or reverse gear (there are two types of steep slope descents: forward descent and reverse descent). The system basically sets an upper speed limit. Taking Land Rover models as an example, the upper speed limit after HDC is set is 9 km/h, allowing the driver to control the vehicle with ease. The following is a related introduction to hill descent control: 1. Definition: Hill descent control allows the driver to smoothly pass through steep downhill sections without stepping on the brake pedal while maintaining full control of the vehicle. 2. Autonomous driving: The HDC system must be set before entering steep slope conditions so that the owner can fully focus on handling the steering wheel. In steep slope conditions, any improper pedal operation may lead to the danger of losing control, such as stepping on the brake causing the tires to lock and skid, or stepping on the clutch losing engine braking. Therefore, after the HDC button is set, the driver must release all pedals, including the throttle, brake, and clutch of manual transmission vehicles, for it to take effect. This driving method is believed to be experienced by many during their first off-road adventure.
