Particle Filter Regeneration Control via Temperature Feedback
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Solution Overview
Problem
Current methods for regenerating particle filters in vehicles often result in increased fuel consumption due to prolonged activation of temperature-raising measures when exhaust temperatures are too low for effective passive regeneration, leading to inefficient and costly fuel usage.
Innovation Solution
A method that monitors the particle filter temperature and discontinues temperature-raising measures when the filter temperature remains below a certain threshold, preventing unnecessary fuel consumption and promoting efficient regeneration by only activating measures when regeneration can be effectively achieved.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If temperature-raising measures are activated to enable passive regeneration, then regeneration effectiveness is improved, but fuel consumption increases
Solution Approach 1:
The system continuously monitors particle filter temperature and uses this feedback to control activation of temperature-raising measures. When temperature reaches the threshold required for effective passive regeneration, the measures are activated; when temperature drops below the threshold, activation is discontinued. This closed-loop feedback control ensures temperature-raising measures are only activated when they will be effective, avoiding unnecessary fuel consumption while maintaining regeneration effectiveness.
Solution Approach 2:
The control system dynamically adjusts the activation state of temperature-raising measures based on real-time temperature conditions. The system transitions between active and inactive states of temperature-raising measures according to whether the particle filter temperature is above or below the threshold, making the system adaptive to changing thermal conditions rather than operating in a fixed mode.
2Reliability
If temperature-raising measures are prolonged to ensure regeneration completion, then regeneration thoroughness is improved, but time consumption and fuel waste increase
Solution Approach 1:
The system uses continuous temperature monitoring to determine when to activate and deactivate temperature-raising measures. By checking whether the particle filter temperature meets the threshold requirement, the system activates measures only when they will be effective for regeneration, and discontinues them when temperature drops below the threshold, avoiding prolonged operation and unnecessary time loss.
3Productivity
If temperature-raising measures are activated when temperature is already sufficient, then regeneration speed is improved, but fuel efficiency deteriorates
Solution Approach 1:
The control system continuously monitors particle filter temperature and uses this feedback to determine whether activation of temperature-raising measures is necessary. When the temperature is already at or above the threshold required for effective passive regeneration, the system keeps the measures inactive, avoiding unnecessary fuel consumption. Activation occurs only when temperature drops below the threshold, ensuring fuel efficiency while maintaining regeneration speed when conditions are favorable.
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 saves fuel by avoiding prolonged and inefficient temperature-raising operations, ensuring regeneration occurs only when it is effective, thereby reducing overall fuel consumption and maintaining vehicle performance.
Implementation Method 1
Particle filters are used to capture these soot particles, and work in such a way that the exhaust flow is led through a filter structure whereby soot particles are captured from the passing exhaust flow and are stored in the particle filter.
Implementation Method 2
The oxidation catalyst 205 has several functions and utilises the surplus air to which the diesel engine process generally gives rise in the exhaust flow as a chemical reagent in conjunction with a noble metal coating in the oxidation catalyst. The function of the oxidation catalyst is to convert nitrogen monoxide to nitrogen dioxide.
Data Source
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AI summary
The present invention relates to a method pertaining to regeneration of a particle filter (202) pertaining to a combustion process, which filter is arranged to treat exhaust gases arising from combustion in a combustion engine (101). The method, when at least one measure for raising the temperature of said particle filter (202) is activated, comprises determining a temperature for said particle filter (202), comparing said temperature determined with a first temperature and discontinuing said measure for raising the temperature of said particle filter (202), when said temperature determined is below said first temperature.