In a dual air brake system:
Answers
Each system has separate air tanks, hoses, and lines.
The systems share air tanks, but each has its own separate hoses and lines.
Each system uses the same lines and hoses.
One system is the main braking system and a second system is ready to be used if the first one fails.
The Correct Answer and Explanation is :
The correct answer is:
Each system has separate air tanks, hoses, and lines.
Explanation:
A dual air brake system is commonly used in large vehicles like trucks and buses to provide redundancy and ensure safety in case of system failure. It is made up of two separate brake circuits: the primary (or service) circuit and the secondary (or emergency) circuit. Both circuits operate independently, providing backup in the event that one fails.
In a dual air brake system:
- Separate air tanks: Each system has its own air supply, typically with one air tank dedicated to the primary circuit and another for the secondary. This design ensures that if one system runs out of air or develops a fault, the other can still function properly, maintaining the vehicle’s braking capabilities.
- Separate hoses and lines: The primary and secondary systems each have their own set of hoses and lines. This means there is no overlap in the air delivery to the brake chambers, which reduces the chance of a single point of failure. If one line or hose were to rupture, the other circuit would still be operational, providing a fail-safe.
- Backup system: The primary system is used for regular braking, while the secondary system is available for backup if the primary system fails. This allows the vehicle to continue braking safely even if one circuit fails.
This dual setup is mandated in commercial vehicles for safety. It ensures that a brake failure does not result in a complete loss of braking power, offering an essential safety mechanism, especially for larger vehicles that require substantial stopping power.