Combustion Stabilizer Using Dynamic Ozone Supply for Engine Load Transients
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Solution Overview
Problem
Related-art internal combustion engines experience transient combustion instability when load increases, due to insufficient response in ozone supply control, leading to further instability and delayed adjustment.
Innovation Solution
A combustion stabilization device and method that calculates the engine output increasing rate and adjusts the power supply to the combustion promoter generation device accordingly, ensuring a responsive supply of combustion promoters to stabilize combustion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If the amount of ozone supplied to the combustion chamber is decreased when the load increases, then the combustion stability is improved under high load conditions, but the transient combustion instability is exacerbated during load transitions
Solution Approach 1:
The patent applies dynamics by making the ozone supply amount variable rather than fixed. The ECU dynamically adjusts the ozone supply amount based on the detected combustion state and load conditions, allowing the system to adapt to transient load changes while maintaining stability. This resolves the contradiction by enabling different supply strategies for steady-state versus transient conditions.
Solution Approach 2:
The patent implements feedback control by detecting the combustion state (via knock detection or other combustion indicators) and using this information to adjust the ozone supply amount. The ECU continuously monitors combustion characteristics and modifies the ozone supply in real-time, creating a closed-loop control system that maintains reliable combustion across varying load conditions.
2Stability of the object's composition
If a combustion state detection function is added to adjust ozone supply according to detection results, then the combustion stability is improved, but the response speed during transient instability is insufficient
Solution Approach 1:
The patent applies preliminary action by proactively adjusting the ozone supply amount based on detected combustion trends before severe instability occurs. The ECU analyzes combustion state parameters and preemptively modifies ozone supply to prevent transient instability, rather than merely reacting after the problem manifests. This anticipatory control enhances both stability and response speed.
Solution Approach 2:
The patent replaces traditional mechanical or fixed-control systems with an electronic control system that uses electrical signals and computational algorithms to detect combustion state and adjust ozone supply. This electronic substitution enables faster detection and response times compared to mechanical systems, resolving the response speed limitation.
3Device complexity
If the ozone supply control is simplified without combustion state detection, then the device complexity is reduced, but the combustion instability during load changes increases
Solution Approach 1:
The patent applies universality by integrating multiple functions into the existing ECU - the microprocessor unit simultaneously performs engine management tasks and combustion state detection for ozone supply control. This multi-functionality avoids adding separate dedicated hardware systems, maintaining simplicity while achieving stable combustion through intelligent control algorithms.
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 solution effectively suppresses transient instability in combustion by synchronizing the power supply with engine output changes, enhancing combustion stability during load increases.
Implementation Method 1
a combustion promoter generation device (5), which is configured to generate a combustion promoter through the power supplied from the power supply device (4)
Data Source
AI summary
A change amount per unit time of an engine output command for controlling engine output of an internal combustion engine is calculated as an engine output increasing rate, and a power supply device is controlled so that power corresponding to the calculated engine output increasing rate is supplied to a combustion promoter generation device. The combustion promoter generation device generates a combustion promoter through the power supplied from the power supply device to supply the combustion promoter to a combustion chamber of the internal combustion engine, and a generation amount of the combustion promoter increases as the supplied power increases. In this manner, the generation amount of the combustion promoter is adjusted.