Ignition Transmission Element Shielding for Electromagnetic Interference
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Solution Overview
Problem
Current ignition systems for internal combustion engines, particularly gasoline engines, face challenges in optimizing the combustion process due to limitations in transmitting high ignition voltages efficiently and minimizing electromagnetic interference, which can affect the reliability and efficiency of the ignition process.
Innovation Solution
The proposed solution involves an apparatus with a circuit device that superimposes a high-frequency signal onto the high ignition voltage, using a transmission element with a high-voltage conductor guided in an insulation element, and an electrically conductive shielding element that connects the ground potential of the circuit device to the spark plug, providing electromagnetic shielding and ensuring optimal combustion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a high-voltage conductor is used to transmit ignition voltage to the spark plug, then the ignition voltage can be transmitted to the spark plug, but electromagnetic interference affects the reliability of the ignition process
Solution Approach 1:
The patent introduces a shielding element as an intermediary component between the high-voltage conductor and the external environment. This shielding element acts as a mediator that blocks electromagnetic interference from reaching the high-voltage conductor, thereby protecting the ignition signal while allowing the conductor to perform its primary function of transmitting ignition voltage to the spark plug.
Solution Approach 2:
The patent converts the harmful electromagnetic interference into a beneficial shielding effect by introducing a grounded shielding element. The shielding element captures and redirects electromagnetic interference to ground, transforming the harmful external electromagnetic field into a controlled shielding mechanism that protects the ignition system while maintaining system reliability.
2Object-affected harmful factors
If electromagnetic shielding is added to protect the high-voltage conductor, then electromagnetic interference is reduced, but the device complexity increases
Solution Approach 1:
The shielding element is designed to perform multiple functions simultaneously: it provides electromagnetic shielding to protect the high-voltage conductor, serves as a ground reference for the ignition system, and maintains mechanical stability of the transmission element. By combining multiple functions into a single component, the patent reduces overall system complexity despite adding shielding capability.
Solution Approach 2:
The patent merges the shielding function with the existing transmission element structure. The shielding element is integrated into the insulation element or housing, combining the protective shielding function with the mechanical support and insulation functions already present in the system, thereby minimizing the increase in device complexity.
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 configuration enhances the combustion process by shielding the high-voltage conductor from external interference, ensuring reliable transmission of the high-frequency signal, and optimizing the ignition process, thereby improving engine efficiency and reducing electromagnetic compatibility issues.
Implementation Method 1
an electrically conductive shielding element is provided, which encompasses the high-voltage conductor at least along a section of its longitudinal axis in an electromagnetically shielding manner
Implementation Method 2
a circuit device having a circuit for superimposing the high ignition voltage with a high-frequency signal
Implementation Method 3
a transmission element having a high-voltage conductor, which is guided in an insulation element, for transmitting the high ignition voltage to the spark plug
Implementation Method 4
a spark from a spark plug ignites the fuel-air mixture
Data Source
AI summary
An apparatus for igniting a fuel mixture provides an ignition system for generating a high-voltage ignition voltage, a circuit device comprising a circuit for superimposing a high-frequency signal on to the high-voltage ignition voltage, a spark plug in an engine block, and a transmission element having a high-voltage conductor which is guided in an insulation element. The high-voltage conductor is used for transmitting the ignition voltage, onto which the high-frequency signal has been superimposed, to the spark plug. Further provided is an electrically conducting shielding element which surrounds the high-voltage conductor in an electromagnetically shielding manner at least along one portion of the longitudinal axis of the high-voltage conductor. The shielding element is connected in an electrically conducting manner to a ground potential of the circuit device and establishes a connection between the ground potential of the circuit device and a ground electrode of the spark plug.