Ignition Control Device for Internal Combustion Engine
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Solution Overview
Problem
Existing internal combustion engine control devices face challenges in reducing the number of ignition plug discharges and preventing ignition errors due to variations in gas flow and temperature in the combustion chamber, even when the rotation position reaches the multiple discharge end position.
Innovation Solution
A control device with an ignition control unit and detection unit that monitors the ignition of the air-fuel mixture, stopping ignition once successful ignition is detected to minimize the number of plug discharges and prevent errors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the number of times of discharge of the ignition plug increases to suppress ignition error, then the reliability of fuel ignition is improved, but the life of the ignition plug deteriorates due to promoted wearing
Solution Approach 1:
The ignition control device uses an ignition detection unit to detect whether fuel ignition has been achieved, and provides feedback to the ignition control unit to stop further discharges when ignition is confirmed. This feedback mechanism ensures reliable ignition while preventing unnecessary additional discharges that would wear the ignition plug, thus resolving the contradiction between ignition reliability and plug life.
2Duration of action of stationary object
If multiple discharge is forcibly terminated when rotation position reaches the multiple discharge end position, then the number of ignition plug discharges is reduced, but ignition error may occur due to variations in gas flow and gas temperature
Solution Approach 1:
Instead of forcibly terminating multiple discharge based solely on rotation position, the invention uses ignition detection feedback to determine when to stop discharges. The ignition detection unit monitors whether fuel has actually ignited, and the ignition control unit adjusts the number of discharges accordingly. This ensures ignition accuracy is maintained while reducing unnecessary discharges that would shorten plug life.
3Reliability
If the ignition control device continues multiple discharge until the multiple discharge end position, then ignition error is suppressed, but the number of ignition plug discharges increases causing excessive wear
Solution Approach 1:
The ignition detection unit provides real-time feedback on whether fuel ignition has been achieved. When ignition is detected, the ignition control unit immediately stops further discharges, preventing excessive wear on the ignition plug. This feedback-based control maintains ignition accuracy while minimizing harmful wear effects.
Data Source
AI summary
Provided is a control device of an internal combustion engine that reduces the number of times of discharge in multiple discharge by an ignition plug of the internal combustion engine and suppresses an error in fuel ignition by the ignition plug. The control device according to the present invention includes an ignition plug provided in a cylinder of an internal combustion engine, and an ignition control unit which has an ignition control function of controlling discharge (ignition) of the ignition plug and an ignition detection function of detecting ignition of an air-fuel mixture through ignition by the ignition plug. The ignition control unit is configured to stop ignition by the ignition plug on the basis of detection of ignition of the air-fuel mixture by the ignition plug.