Electronic Protection Valve Pressure Control for Utility Air Systems
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Solution Overview
Problem
Conventional protection valves for utility vehicles have fixed preadjusted opening and closing pressures and pressure limitations, which cannot be optimized for varying conditions, are complex in structure, and require extensive assembly time, with separate components for overflow, pressure limiting, and bypass functions.
Innovation Solution
Integration of overflow and pressure limiting valves into a common valve unit with a solenoid control valve unit, allowing dynamic adjustment of pressures via a control chamber connected to a pneumatic pressure source, enabled by pressure sensors and a CAN bus for optimized operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If overflow valve and pressure limiting valve are integrated into a common valve unit, then device complexity is reduced and manufacturing is simplified, but control flexibility for different applications is limited
Solution Approach 1:
The patent introduces a solenoid control valve unit that can dynamically adjust the opening and closing pressures of the integrated overflow and pressure limiting valves. This dynamic control capability allows the fixed physical structure to adapt to different application requirements electronically, resolving the contradiction between structural simplicity and application versatility.
Solution Approach 2:
The solenoid control valve unit enables remote adjustment of pressure parameters (opening pressure, closing pressure, pressure limitation) without mechanical disassembly or reconfiguration. This parameter adjustability maintains the simplicity of the integrated structure while providing adaptability for different utility vehicle applications.
2Manufacturing precision
If opening and closing pressure are preadjusted during assembly, then manufacturing precision is improved, but assembly time and production cost increase
Solution Approach 1:
The valves are preadjusted to standard pressure values during manufacturing, ensuring high precision for common applications. The solenoid control valve unit then allows rapid electronic adjustment for specific applications without requiring time-consuming mechanical reassembly, combining the benefits of precision preadjustment with fast deployment.
Solution Approach 2:
The patent replaces mechanical pressure adjustment mechanisms with an electronically controlled solenoid valve unit. This substitution eliminates the need for manual mechanical adjustment during assembly and maintenance, reducing assembly time while maintaining precision through electronic control and remote calibration capabilities.
3Adaptability or versatility
If separate components are used for overflow valve, pressure limiting valve, and bypass, then adaptability for different functions is improved, but device complexity and weight increase
Solution Approach 1:
The patent merges the overflow valve, pressure limiting valve, and bypass functionality into a single integrated valve unit with a common piston and valve seat. This consolidation significantly reduces the weight and component count compared to separate components, while the solenoid control valve unit provides the electronic adaptability needed for different functional requirements.
Solution Approach 2:
The integrated valve unit is designed with multi-functionality, where a single component structure performs overflow protection, pressure limiting, and bypass functions. The solenoid control valve unit enables this universal structure to adapt to different functional demands through electronic control, eliminating the need for multiple specialized components.
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
This configuration simplifies manufacturing and assembly, reduces component count, and allows for real-time optimization of valve operations based on vehicle conditions, enhancing operational flexibility and reducing weight and costs.
Implementation Method 1
with at least one solenoid control valve unit, wherein the solenoid control valve unit is connectable with at least one control chamber of the common valve unit
Implementation Method 2
the opening and closing pressure and the limited pressure may be variably controlled via a predetermined pressure within the control chamber of the common valve unit
Data Source
Figure 1~2
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AI summary
The present invention relates to a control valve device (10, 110, 210), especially protection valve device, for an air treatment device of a vehicle, especially utility vehicle with at least one working inlet (12); with at least one working outlet (14); with at least one overflow valve (16); with at least one pressure limiting valve (18), wherein the overflow valve (16) and the pressure limiting valve (18) are integrated into at least one common valve unit (20), wherein the common valve unit (20) is connected with the working inlet (12) and the working outlet (14); and with at least one solenoid control valve unit (22, 122), wherein the solenoid control valve unit (22, 122) is connectable with at least one control chamber (20a) of the common valve unit (20). Further, the present invention relates to a multi-circuit protection valve device for an air treatment device of a vehicle, especially utility vehicle, with at least one control valve device as mentioned above.