What is the purpose of the metering valve in the brake balance control system?

The metering valve in a brake balance control system plays a crucial role in managing the timing of brake engagement. Its primary function is to ensure that the front brakes engage slightly before the rear brakes under normal braking conditions. This timing helps to maintain stability and control during braking, particularly in situations where heavy braking is required. By controlling the engagement timing, the metering valve helps prevent rear wheel lock-up, which can lead to loss of control or skidding.

Understanding this function is essential, as it directly relates to vehicle safety and performance. Proper brake balance allows for effective stopping power while maintaining the vehicle's stability, especially on slippery surfaces or during emergency stops.