Ignition Coil Control With Load-Based Engine Usage Tracking
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Solution Overview
Problem
Current ignition coil units for handheld working machines lack the ability to provide precise maintenance and evaluation of engine and working machine operating states, making it difficult to offer tailored services based on user-specific operating characteristics.
Innovation Solution
An ignition coil unit with an integrated controller, sensor, and memory that stores operating and load information as matrix data, allowing for precise tracking of engine rotational speed, temperature, and usage patterns, enabling informed maintenance and personalized service.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If a time totaling meter is installed to cumulate operating time, then the cumulative operating time can be obtained, but it is not possible to specifically know the operating states of the engine and working machine for precise maintenance evaluation
Solution Approach 1:
The patent merges the time totaling meter with the ignition coil unit to create an integrated system. The controller in the ignition coil unit accumulates both time data and operating state data (engine speed, load, temperature) together, eliminating the need for a separate time totaling meter and reducing overall system complexity while providing comprehensive operating information.
Solution Approach 2:
The ignition coil unit's controller is given multi-functionality by enabling it to not only control ignition timing but also to accumulate and store time data and operating state data. This universal approach allows a single component to perform multiple functions: ignition control, time totaling, and operating state monitoring, thereby avoiding additional device complexity.
2Measurement precision
If operating time is cumulated for maintenance scheduling, then total operating time is available, but precise evaluation for maintenance cannot be conducted without specific operating state data
Solution Approach 1:
The patent segments operating data into distinct categories: time data, engine speed data, load data, and temperature data. The controller accumulates these segmented data types separately and stores them in association with each other. This segmentation allows precise maintenance evaluation by providing specific operating state information without requiring excessive undifferentiated data quantity.
Solution Approach 2:
The patent transitions from one-dimensional time accumulation to multi-dimensional data accumulation by adding dimensions of engine speed, load, and temperature. The controller stores time data together with corresponding operating state data, creating a multi-dimensional dataset that enables precise maintenance evaluation while efficiently managing data quantity through structured organization.
3Adaptability or versatility
If the ignition coil unit is used for general ignition control, then basic ignition function is provided, but user-specific operating characteristics cannot be understood for personalized service
Solution Approach 1:
The patent implements feedback by having the controller continuously accumulate operating state data (engine speed, load, temperature) and time data, store them in memory, and make them available for analysis. This feedback mechanism provides user-specific operating characteristics that enable personalized service while maintaining ease of operation through automatic transparent data collection without requiring user intervention.
Solution Approach 2:
The ignition coil unit performs self-service by automatically collecting, accumulating, and storing operating data without requiring external devices or user actions. The controller autonomously monitors engine parameters, records time data, and stores everything in its memory, enabling user-specific service capabilities while keeping the system easy to operate through completely automatic data collection.
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
Enables precise maintenance and evaluation of engine and working machine conditions, allowing for tailored services based on user-specific data, reducing maintenance costs and improving service efficiency.
Implementation Method 1
a generator coil configured to generate an induced voltage in synchronization with the rotation of the engine
Implementation Method 2
an ignition circuit including a primary coil and a secondary coil
Data Source
AI summary
An ignition coil unit includes: an ignition circuit including a primary coil and a secondary coil; a power generator including a generator coil; a controller configured to control an ignition timing of the ignition circuit by an input signal generated by an induced voltage of the generator coil; and a sensor configured to input load information to the controller. The controller includes a memory configured to store working time information which corresponds to operating information based on the input information and the load information, as matrix data composed of the operating information, the load information and time data.