Compressor Regulation via Coupled Temperature Calculation
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Solution Overview
Problem
Existing compressor control methods in compressed air supply systems for vehicles frequently switch on and off due to stepwise temperature increases, leading to inefficient pressure regulation and reduced compressor availability, as they only consider individual component temperatures without accounting for mutual heat transfer between components, thereby failing to prevent overheating and ensure optimal operation across varying loads and conditions.
Innovation Solution
The method determines the switch-on or switch-off temperature of the compressor by correlating the mutual temperature dependence between adjacent components through heat transfer, including both heat dissipation and supply mechanisms like radiation and convection, to account for the temperatures of critical components such as the piston sleeve, O-rings, and electric motor brush bridges, ensuring a fully coupled temperature model that protects all critical components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the compressor is switched on and off based on stepwise temperature increases, then overheating protection is achieved, but compressor availability decreases due to frequent switching
Solution Approach 1:
The patent changes the parameter basis for switch-on/switch-off decisions from simple temperature thresholds to a comprehensive temperature calculation method that considers system pressure, ambient temperature, and running time. This allows for more nuanced temperature limit determination that prevents overheating while avoiding unnecessary shutdowns, thereby maintaining higher compressor availability.
Solution Approach 2:
The patent performs preliminary temperature calculation and prediction before actual overheating occurs. By using a temperature calculation method that forecasts temperature development based on multiple parameters, the system can make proactive switching decisions that prevent overheating while minimizing interruptions to compressor operation.
2Device complexity
If only individual component temperatures are considered, then temperature monitoring is simplified, but accurate overheating prevention fails due to ignoring mutual heat transfer
Solution Approach 1:
The patent merges the temperature considerations of multiple components (compressor, air suspension system, ambient environment) into a unified temperature calculation method. This integration accounts for mutual heat transfer between components and provides accurate overheating prevention while maintaining manageable system complexity through a coordinated control approach.
3Productivity
If the compressor runtime is extended to reach higher switch-off temperatures, then pressure increase is improved, but component damage risk increases due to thermal stress
Solution Approach 1:
The patent dynamically adjusts the switch-off temperature parameter based on a comprehensive calculation that considers system pressure requirements, ambient temperature, and running time. This allows the system to extend compressor runtime for pressure buildup when conditions permit, while automatically reducing the switch-off temperature threshold when thermal stress becomes excessive, thereby protecting components from damage.
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 approach effectively prevents overheating, extends compressor runtime, and ensures optimal air quantity changes in all operating states by accurately determining the limit temperatures for each critical component, allowing for quicker restarts and improved system availability.
Implementation Method 1
a compressor for a compressed air supply system
Implementation Method 2
Heat transfer is understood to mean both heat dissipation and heat supply, which can take place, for example, by radiation, convection or heat transfer
Implementation Method 3
Heat transfer is understood to mean both heat dissipation and heat supply, which can take place, for example, by radiation, convection or heat transfer
Implementation Method 4
Heat transfer is understood to mean both heat dissipation and heat supply, which can take place, for example, by radiation, convection or heat transfer
Data Source
AI summary
The invention relates to a method for regulating a compressor of a pressure supplying system. The compressor is switched on and off dependent on a threshold temperature of one or more components of the pressure supplying system, said threshold temperature being ascertained using a temperature calculating method. The respective threshold temperature is ascertained by correlating the reciprocal temperature dependence that exists as a result of heat transfer between adjacent components.