Integrated Pneumatic Brake Valve Block for Redundant Air Supply
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Solution Overview
Problem
Existing pneumatic brake systems for towing vehicles lack a compact and stable redundant pressure supply, leading to instability and increased installation space due to separate components, which can result in failure scenarios such as leakage and actuation of parking brakes during emergencies.
Innovation Solution
A compact pneumatic valve system with a valve block integrating supply and control pressure outlets, directional control valves, and a check valve, allowing redundant compressed air supply to the brake cylinder, reducing installation space, and enhancing stability by preventing air pressure drops and enabling electronic control for improved safety and efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate valves and components are used for redundant pressure supply, then reliability is improved through redundancy, but device complexity and installation space increase
Solution Approach 1:
The patent combines multiple directional control valves (first directional control valve, second directional control valve, third directional control valve) and associated components into a single integrated valve block. This merging maintains the redundant pressure supply function while reducing device complexity and installation space requirements, as the integrated valve block eliminates the need for multiple separate mounting locations and reduces overall system footprint.
2Reliability
If separate valves are used for pressure control, then functional redundancy is achieved, but installation space and structural stability worsen
Solution Approach 1:
The valve block integrates three directional control valves that provide functional redundancy for pressure control. By merging these valves into a single compact structure, the system achieves the necessary functional redundancy while significantly reducing the installation space compared to using separate valves mounted individually in the vehicle.
Solution Approach 2:
The integrated valve block serves multiple functions simultaneously: it provides redundant pressure supply paths, controls compressed air flow to brake cylinders, and maintains system stability. This multi-functionality allows the single valve block to replace multiple separate components, reducing installation space while maintaining all necessary redundant functions.
3Ease of manufacture
If individual valves are mounted separately, then ease of assembly is improved, but structural stability and compactness deteriorate
Solution Approach 1:
The valve block is manufactured as an integrated structure containing multiple directional control valves, which inherently provides greater structural stability compared to separately mounted valves. The stable base structure of the valve block prevents breakage and ensures reliable mounting, while the integrated design simplifies assembly by reducing the number of separate components that need to be installed and secured.
4Reliability
If redundant valve system is implemented, then safety is improved, but device complexity increases
Solution Approach 1:
The patent implements a redundant valve system for safety by integrating three directional control valves into a single valve block. This merging approach maintains the safety benefits of redundancy (multiple failure paths) while reducing the perceived and actual complexity of the system, as the integrated design presents a unified structure rather than multiple separate complex components.
Data Source
AI summary
The invention relates to a pneumatic valve system (5) for a braking system of a towing vehicle. The pneumatic valve system (5) comprises a valve block (28) comprising a supply pressure inlet (29), a towing vehicle supply pressure outlet (30) and a towing vehicle control pressure outlet (32), as well as a control valve (6), a redundancy valve (7), and a brake valve (10). The pneumatic valve system (5) permits a redundant pressure supply of a brake cylinder of a parking brake of the towing vehicle by connecting the valves and the supply pressure outlet and outlets to one another in a very compact and stable manner.