Magneto Ignition System With Two-Wire Communication
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Solution Overview
Problem
Existing magneto ignition systems for combustion engines lack efficient communication and control mechanisms for engine position and temperature, leading to suboptimal ignition timing and energy management.
Innovation Solution
A two-way communication system using a single wire to convey signals indicative of engine component position and temperature, and to trigger ignition events, integrated with a microcontroller and ignition circuit, allowing for precise control of ignition timing and energy distribution within the ignition module.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional CDI systems use separate wires for each signal (ignition, position, temperature, power), then signal transmission reliability is improved, but device complexity and wire harness length increase
Solution Approach 1:
The patent combines multiple separate signal wires (ignition, position, temperature, power) into a single integrated wire harness. The controller multiplexes these signals over one wire by time-division or protocol-based separation, reducing the number of physical connections while maintaining reliable signal transmission for all functions.
Solution Approach 2:
The single wire harness is designed to carry multiple types of signals (digital communication, analog temperature, ignition control, power supply) simultaneously through protocol differentiation. This universal wire performs the function of what would traditionally require four separate wires, simplifying the overall system architecture.
2Measurement precision
If ignition systems use multiple separate wires for control signals, then control precision is improved, but ease of installation and maintenance deteriorates
Solution Approach 1:
By merging multiple control signals into a single wire harness with multiplexed communication protocols, the system maintains precise ignition timing control through software-based signal separation while significantly improving installation ease. Technicians now install one wire instead of multiple separate harnesses, reducing installation time and complexity.
3Reliability
If the ignition circuit includes separate power supply wires, then power delivery reliability is improved, but electromagnetic load on the system increases
Solution Approach 1:
The patent combines power delivery and signal communication into a single integrated wire harness. The controller manages power supply and communication signals through protocol differentiation, allowing the same wire to carry both high-current power signals and low-current data signals without requiring separate harnesses, thereby reducing overall electromagnetic load on the system.
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 solution enables precise control of ignition timing and energy management, improving engine performance by accurately determining engine position and temperature, and reducing electromagnetic load on the ignition system, thus supporting both ignition and external loads efficiently.
Implementation Method 1
The ignition circuit may be an inductive discharge ignition circuit including a coil
Implementation Method 2
The ignition circuit may include a charge capacitor that is discharged to cause an ignition event
Data Source
AI summary
In at least some implementations, an ignition system for a combustion engine includes a controller, an ignition circuit, and a wire providing two-way communication between the ignition circuit and the controller. The ignition circuit may include a charge capacitor that is discharged to cause an ignition event. The ignition circuit may be an inductive discharge ignition circuit including a coil and may then also include a second wire that provides electrical power to the coil.