The control of brake application through
pneumatic brake valves is a fundamental aspect of the braking system in trucks and trailers. This process involves regulating the release and application of air pressure to the brake chambers, which, in turn, initiates the braking action.
1. Brake Pedal Input:
The control of brake application starts when the driver presses the brake pedal. When the brake pedal is depressed, it sends a signal to the pneumatic brake valve, indicating the driver's intention to slow down or stop the vehicle. This signal triggers the activation of the pneumatic brake system, allowing air pressure to flow through the system and reach the brake chambers.
2. Air Pressure Regulation:
Pneumatic brake valves are designed to regulate the amount of air pressure that is applied to the brake chambers. The brake chambers, located at each wheel, house diaphragms or pistons that move when air pressure is applied. This movement causes the brake shoes or pads to press against the brake drums or rotors, creating friction and subsequently slowing down or stopping the vehicle.
3. Proportional Braking:
One of the key advantages of pneumatic brake valves is their ability to provide proportional braking. As the driver applies varying degrees of force on the brake pedal, the pneumatic brake valve modulates the air pressure sent to each brake chamber accordingly. This modulation allows for smooth and controlled deceleration, ensuring that the vehicle slows down without skidding or abrupt stops. Proportional braking is crucial in maintaining stability and control, especially during emergency braking situations.
4. Anti-lock Brake System (ABS) Integration:
Many modern trucks and trailers are equipped with Anti-lock Brake Systems (ABS). ABS is a safety feature that prevents wheel lock-up during hard braking. It achieves this by rapidly modulating the brake pressure to each wheel to maintain traction. Pneumatic brake valves work in conjunction with the ABS system, providing precise control over the air pressure to ensure that the ABS can function effectively. When the ABS detects a potential wheel lock-up, it signals the pneumatic brake valve to adjust the brake pressure accordingly, preventing skidding and allowing the driver to steer while braking.
5. Electronic Stability Control (ESC) Integration:
Electronic Stability Control (ESC) is another advanced safety feature found in some trucks and trailers. ESC helps to enhance vehicle stability by selectively applying brakes to individual wheels to counteract oversteer or understeer conditions. Pneumatic brake valves are crucial components in ESC systems, as they play a role in the precise application of the brakes to specific wheels to maintain vehicle stability.
6. Quick Response Time:
Pneumatic brake valves are designed to have quick response times, ensuring that the braking system reacts promptly to the driver's inputs. A rapid response is essential for providing immediate braking force when needed, helping drivers to respond swiftly to potential hazards and emergencies on the road.
7. Redundancy and Safety:
As mentioned earlier, some trucks and trailers use dual-circuit pneumatic brake systems, offering redundancy in case of component failure. Pneumatic brake valves in these systems are engineered to switch between circuits seamlessly, ensuring that braking performance remains intact even if there is a failure in one circuit. This redundancy significantly enhances safety on the road, reducing the risk of accidents due to brake system malfunctions.
ABS solenoid valve OE# 4721950180
| Product name |
ABS solenoid valve |
| Product number |
4721950180 |
| Product Category |
Equipment |
| Protection class |
IP 69K DIN 40050 BL.9 |
| Weight (lb) |
1.4595 |
| Calculated Volume (dm³) |
0.76275 |
| Size |
64 x 118 x 101 |
| Weight (KG) |
0.662 |
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