Adaptive Compressed Air Supply System for Universal Vehicle Integration
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Solution Overview
Problem
Existing compressed air supply systems for motor vehicles require manual mechanical adjustment or software parameterization, making them complex and not universally adaptable across different vehicles.
Innovation Solution
A multi-circuit protective valve with adaptive electronic pressure conditioning, allowing for the estimation of compressor output capacity and tank configuration, enabling a universal air dryer that can be installed without adaptation in various vehicles, with reduced energy consumption through optimized drying behavior.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If manual mechanical adjustment or software parameterization is used to adapt the air supply system to different vehicles, then the system can be customized for specific vehicle requirements, but the device complexity and installation time increase
Solution Approach 1:
The control unit automatically determines system parameters (tank volume, compressor output capacity, drying behavior) through self-learning during initial operation phases, eliminating the need for manual mechanical adjustment or software parameterization. The system adapts to different vehicle configurations autonomously by monitoring pressure developments and consumption patterns during test phases.
Solution Approach 2:
The system dynamically adjusts operational parameters such as regeneration timing, compressor output capacity, and tank volume based on automatically determined characteristics. The control unit modifies these parameters in real-time during different operation phases (initial filling, intermediate filling, final filling) to optimize performance for the specific vehicle configuration without requiring pre-programming.
2Reliability
If the air dryer is optimized for specific vehicle configurations through parameterization, then drying performance is maximized, but the loss of time for installation and adaptation increases
Solution Approach 1:
The system performs automatic parameter determination and optimization during initial operation phases (initial filling phase) before normal operation begins. The control unit uses this preliminary self-learning period to establish optimal drying parameters, regeneration timing, and system characteristics, so that full drying performance is achieved without requiring time-consuming manual adaptation during installation.
3Reliability
If the air dryer cartridge is regenerated frequently to ensure drying performance, then drying reliability is improved, but the loss of energy increases
Solution Approach 1:
The control unit continuously monitors system parameters including pressure developments, consumption patterns, and drying performance to dynamically determine optimal regeneration timing. The system uses feedback from pressure sensor data and consumption measurements during different filling phases to adjust regeneration frequency and timing, ensuring drying reliability while minimizing energy consumption by regenerating only when necessary based on actual system state.
Data Source
AI summary
A vehicle compressed air supply system includes a supply part with compressor, an air drying part and a consumer part including consumer circuits with brake circuits supplied with compressed air via a multi-circuit safety valve. The brake circuits, and optionally at least one other consumer circuit, include compressed air tanks. Pressure in the circuits is monitored by sensors and evaluated by an electronic control device. To determine system parameters in terms of tank size and compressor output, when filling circuits, the rate of pressure increase in a circuit is determined as a function of compressor speed, and air-drying regeneration is effected. The period of a pre-defined pressure drop or pre-defined pressure gradient is determined and air volume for completing regeneration is calculated from the magnitude of the pressure drop, regeneration time and throttle diameter. Tank volume is determined therefrom. Compressor output is calculated from tank volume and rate of pressure increase.