Central Tire Inflation Control With Outlet Pressure Limiting
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Solution Overview
Problem
Conventional control devices for tire inflation systems do not sufficiently limit tire pressure, relying on vehicle-side pressure regulation and complex software or wheel valves.
Innovation Solution
A control device with a supply valve, channel valves, and pressure-limiting valves that selectively connect a pressure source to pneumatic tires and limit pressure to prevent exceeding a threshold, ensuring safe tire inflation and deflation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional control devices rely on vehicle-side pressure regulation and complex software or wheel valves, then tire pressure can be controlled, but the pressure limitation is insufficient and the device complexity increases
Solution Approach 1:
The patent introduces a pressure-limiting valve as an intermediary component between the supply valve and the tire. This valve actively monitors pressure and intervenes when threshold is reached, providing reliable pressure limitation without requiring complex software or sophisticated wheel valves. The intermediary component simplifies the overall control logic while ensuring safety.
Solution Approach 2:
The pressure-limiting valve operates autonomously based on pressure feedback from the tire. When pressure reaches the predetermined threshold, the valve automatically activates to release excess pressure, then closes when pressure drops below the threshold. This self-regulating mechanism eliminates the need for complex external control systems while ensuring reliable pressure management.
2Object-affected harmful factors
If the control device includes pressure-limiting valves connected to each outlet, then tire pressure safety is improved, but the device complexity increases
Solution Approach 1:
The patent divides the control system into modular components: a supply valve for pressure input, individual pressure-limiting valves for each tire outlet, and a vent connection. Each pressure-limiting valve is independently connected to its respective outlet, providing targeted pressure protection. This segmentation allows simple, reliable pressure management without requiring complex integrated control, as each outlet is protected by its own straightforward pressure-limiting mechanism.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The control device effectively manages tire pressure by preventing excessive pressure, enhancing safety and reducing the risk of tire damage, while allowing for versatile operation across different terrains.
Implementation Method 1
the first pressure-limiting valve is fluidly connected to the first outlet for limiting a pressure at the first outlet
Data Source
AI summary
The present document relates to a control device for a central tire inflation system, comprising: an inlet for connection with a pressure source, at least a first outlet for connection with a first pneumatic tire, a supply valve, at least a first channel valve, and at least a first pressure-limiting valve, wherein the supply valve and the first channel valve selectively fluidly connect the inlet to the first outlet and are fluidly connected in series between the inlet and the first outlet, and wherein the first pressure-limiting valve is fluidly connected to the first outlet for limiting a pressure at the first outlet. The present document further relates to methods of operating the control device for the central tire inflation system.