Dual Compressed Air Supply System for Truck Trailers
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Solution Overview
Problem
Current compressed air supply systems for truck trailers, limited by EU-wide legal requirements, cannot provide the higher air pressure needed for automatic tire pressure control systems, as they are designed only for pneumatic brake systems, necessitating additional compressors and valves for a separate high-pressure network.
Innovation Solution
A dual compressed air supply system with a first network for the pneumatic brake system at limited EU pressure and a second network for higher pressure to support tire pressure monitoring and pneumatic suspension systems, eliminating the need for a booster compressor and associated components, and allowing a single compressed air coupling to serve both networks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a single compressed air network supplies the pneumatic brake system at limited EU pressure, then the brake system operates reliably according to legal requirements, but higher pressure is unavailable for tire pressure control systems
Solution Approach 1:
The compressed air supply system is divided into two separate networks: a first compressed air network for the pneumatic brake system operating at limited EU pressure, and a second compressed air network for tire pressure control systems operating at higher pressure. This segmentation allows each network to be optimized for its specific pressure requirements without interfering with the other, resolving the contradiction between versatility and complexity.
2Stress or pressure
If a booster pump is added to transform limited pressure compressed air into higher output pressure, then tire pressure control becomes possible, but system complexity and cost increase due to additional components
Solution Approach 1:
Instead of adding a booster pump to transform pressure, the invention extracts the high-pressure air supply function directly from the towing vehicle through a dedicated high-pressure compressed air coupling. This eliminates the need for booster pumps, pressure surge protection valves, and pressure relief valves in the trailer, significantly reducing system complexity while maintaining the required high pressure for tire control.
3Adaptability or versatility
If separate high-pressure and low-pressure compressed air networks are implemented in the trailer, then both brake and tire pressure control functions are available, but weight and space requirements increase
Solution Approach 1:
The high-pressure compressed air coupling serves multiple functions: it supplies both the first compressed air network (for brakes) and the second compressed air network (for tire pressure control). By making the coupling universal and multi-functional, the system avoids duplicating components, thereby reducing weight and space requirements while maintaining dual pressure supply capability.
Data Source
AI summary
A compressed air supply system is described for a truck trailer, which includes at least one first compressed air network, which supplies a pneumatic brake system of the truck trailer with an air pressure limited according to a requirement, and at least one compressed air supply coupling between the tractive vehicle and the truck trailer for supplying compressed air, in which the at least one compressed air supply coupling is configured for a higher air pressure than the limited air pressure according to the requirement.