1.What is a Brake Load Sensing Valve?
Brake valves, also known as load-sensing valves, use the weight of the rear of the vehicle to calculate the amount of brake hydraulic pressure needed to safely slow the rear wheels. Unreliable pushrods reduce the efficiency and response time of the braking system.
2.How do load sensing valves work?
The load sensing valve is mounted on the chassis of the vehicle, and the control cable is mounted with the spring on a bracket bolted or welded to the axle. The load sensing valve operates statically, i.e. changes in the spring path that occur during braking do not change the control ratio.
3.What happens when the brake proportional valve fails?
Since the proportional valve reduces the pressure sent to the rear brake, the main symptom of a bad valve is rear wheel locking when the brake is applied. Also, the wheels will lock up more easily on wet surfaces. Even with light application of the rear brake, it may feel tactile.
4.What are the advantages of a load sensing system?
This is sometimes referred to as "sensitive load sensing". Load-sensing control is energy efficient (less heat loss) because the variable pump produces only the flow required by the actuator—which may reduce oil oxidation rates and extend fluid life, as well as improve actuator control.
Theoretical explanation video of brake load-sensing proportional valve(The video is from youtube, if it is infringed, it will be deleted)：