Dual-Interface Pneumatic Trailer Brake System
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional commercial vehicle trailer interfaces with a supply coupling head and brake coupling head are not compatible with towing vehicles equipped with an EPI module, leading to incompatibility issues when modernizing trailers with longer service lives than towing vehicles, necessitating additional interfaces for multi-generational compatibility.
Innovation Solution
Designing a pneumatic trailer brake system with two interfaces: one with a supply coupling head and brake coupling head for conventional towing vehicles, and another with an EPI module for vehicles with a coupling unit, allowing the same trailer to be coupled with towing vehicles of different interface designs, using a central supply and brake control line with a valve system for adaptive pressure transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a trailer is equipped with only one interface type (either conventional supply/brake coupling heads or EPI module), then the system is simpler, but it cannot be compatible with both conventional and modern towing vehicles
Solution Approach 1:
The trailer is equipped with two different interface types (conventional supply/brake coupling heads and EPI module) to enable universal compatibility with both conventional and modern towing vehicles. This multi-functionality allows the same trailer to adapt to different interface generations without requiring separate trailer fleets.
Solution Approach 2:
The system dynamically switches between interface types based on which towing vehicle interface is detected. The control unit identifies the available interface and automatically routes pneumatic and electrical connections through the appropriate interface, enabling adaptive operation without manual intervention.
2Adaptability or versatility
If two interfaces are provided on the trailer for compatibility, then versatility is improved, but the system complexity increases
Solution Approach 1:
The system automatically detects which interface is available and self-configures the pneumatic and electrical connections without requiring manual setup. The control unit monitors the interface status and autonomously routes signals and pressures through the correct interface, reducing operational complexity despite having multiple interfaces.
Solution Approach 2:
The control unit acts as an intermediary that manages the complexity of having two interfaces. It receives inputs from both interfaces, determines which one is active, and routes the appropriate signals and pressures, thereby shielding the user from the underlying complexity while maintaining compatibility with both interface types.
3Adaptability or versatility
If pneumatic signals are processed through parallel paths from two interfaces, then compatibility is maintained, but the control system becomes more complex
Solution Approach 1:
The pneumatic routing system dynamically switches between parallel paths based on which interface is active. Shuttle valves and switching mechanisms automatically direct pneumatic signals from either the conventional supply/brake coupling heads or the EPI module through the appropriate path to the trailer brake system, maintaining simplicity despite the dual-interface capability.
Data Source
AI summary
The present invention relates to a pneumatic trailer brake system (14) for a commercial vehicle. According to the prior art, two different interfaces are used alternatively for the pneumatic coupling of a towing vehicle to a trailer: an interface (15) with a coupling head (16) and a coupling head (17), and an interface (1) with an EPI module (4). The invention proposes equipping the trailer brake system (14) with both interfaces simultaneously, so that the trailer can be towed by a towing vehicle pneumatically coupled to the trailer via the coupling heads (16, 17) as well as by a towing vehicle pneumatically coupled to the trailer via the EPI module (4).