Ignition Spark Energy Feedback Control for Same-Cycle Adjustment
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Solution Overview
Problem
Existing ignition systems lack closed-loop control, leading to inefficiencies in spark optimization due to a lack of feedback, which is particularly problematic for engines using new fuel sources like hydrogen that require precise spark control to minimize variation and optimize combustion.
Innovation Solution
An ignition system with a control unit that adjusts spark characteristics in real-time using feedback from spark sensors and reference data to optimize spark energy delivery, allowing for closed-loop control of spark current and duration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If open-loop control is used in ignition systems, then the system structure is simple, but the spark optimization is delayed by one or more engine rotations
Solution Approach 1:
The patent implements closed-loop control by measuring spark characteristics (voltage, current, duration) and using this feedback to adjust ignition timing and spark energy in real-time, eliminating the delay inherent in open-loop systems where adjustments could only be made after observing performance in subsequent engine rotations
2Loss of time
If closed-loop control with real-time feedback is implemented, then spark optimization is achieved in the same spark cycle, but the device complexity increases
Solution Approach 1:
The system uses sensors to measure spark characteristics and feeds this information back to the control unit, which adjusts ignition parameters in real-time within the same spark cycle, achieving immediate spark optimization
Solution Approach 2:
The patent replaces complex mechanical feedback mechanisms with electronic sensing and control systems, using voltage and current sensors combined with electronic control units to achieve closed-loop control without mechanical complexity
3Ease of operation
If standard ignition systems are used without adaptive control, then the system is simple to operate, but combustion stability varies across different fuel types
Solution Approach 1:
The system dynamically adapts spark characteristics based on detected combustion conditions and fuel type, automatically adjusting voltage, current, and duration to maintain optimal combustion stability across different fuel types without requiring manual intervention
Solution Approach 2:
The patent changes ignition parameters (voltage, current, duration) based on feedback from spark characteristics and combustion analysis, allowing the system to optimize performance for different fuel types by adjusting these parameters in real-time
4Reliability
If higher spark energy is used to ensure reliable ignition, then combustion reliability improves, but electrode wear and heat release increase
Solution Approach 1:
The system optimizes spark parameters (voltage, current, duration) based on real-time feedback, delivering the minimum necessary energy for reliable ignition rather than consistently high energy, thereby reducing electrode wear and heat release while maintaining ignition reliability
Solution Approach 2:
By measuring spark characteristics and combustion outcomes, the system feedback-adjusts spark energy delivery to match actual needs, avoiding excessive energy that would accelerate electrode wear and increase heat release
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
Enhances spark control accuracy and efficiency, reducing electrode wear, heat release, and improving combustion stability across various fuel types, including hydrogen, by adapting spark energy delivery to specific engine conditions.
Implementation Method 1
The ignition coil (also referred to as ignition transformer) typically produces the high voltage
Implementation Method 2
an ignition system generates a high voltage that is sent to a spark plug to create a spark
Data Source
AI summary
A system and method for operating an ignition system. An ignition transformer has primary and secondary windings. A spark apparatus is connected with the secondary windings of the ignition transformer. One or more characteristics of a spark generated by the spark apparatus is provided. An electronic control unit is adapted to control the ignition transformer, such that, based on an identification of the spark using the one or more characteristics and the spark reference data, the electronic control unit sends control signals to the ignition transformer to modify the one or more characteristics of the spark. Modification of the one or more characteristics may occur in a same spark cycle as measurement of the one or more characteristics.