Ignition Apparatus Energy Input Circuit Failure Isolation
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Solution Overview
Problem
The existing ignition apparatuses face issues where a failure in the energy inputting circuit can lead to continued electrical energy supply to other vehicle systems, potentially causing equipment failures and preventing engine shutdown, due to excessive voltage and current being supplied through the master power source line.
Innovation Solution
Incorporating an abnormality judgement section that halts the energy inputting circuit's operation when a failure is detected, and using an output halt switching mechanism to disconnect the energy inputting line from the primary winding, preventing energy from being continuously inputted into the primary winding, thus avoiding equipment failures and ensuring engine shutdown functionality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the energy inputting circuit continues to supply electrical energy to the primary winding after a failure, then the spark discharge continuation function is maintained, but excessive voltage and current are supplied to other vehicle systems through the master power source line, causing equipment failures and preventing engine shutdown
Solution Approach 1:
The patent segments the power supply system by introducing a separate ignition power source line (α2) that branches from the master power source line (α1). The energy inputting circuit is connected to this separate line, isolating its power supply path from other vehicle systems. This segmentation ensures that failures in the energy inputting circuit cannot affect other systems through the master power source line, while still maintaining the spark discharge continuation function.
Solution Approach 2:
The patent introduces an abnormality judgement section (28) as an intermediary component that monitors the operation of the energy inputting circuit. When a failure is detected, this section activates output halt switching means (29) to interrupt the power supply to the energy inputting circuit. This intermediary mechanism prevents excessive voltage and current from reaching other vehicle systems while preserving the ability to maintain spark discharge continuation when functioning normally.
2Duration of action of stationary object
If the energy inputting circuit is continuously connected to the primary winding, then spark discharge can be maintained during failure conditions, but the circuit cannot be shut down to prevent damage to other equipment
Solution Approach 1:
The patent makes the power supply connection dynamic by introducing output halt switching means (29) that can change the connection state of the energy inputting circuit based on operational conditions. The switching means can connect the circuit during normal operation to maintain spark discharge, and disconnect it when failures are detected or shutdown is required. This dynamic control resolves the contradiction between maintaining continuous operation and enabling shutdown capability.
Solution Approach 2:
The patent implements a feedback mechanism where the abnormality judgement section (28) continuously monitors the energy inputting circuit operation and provides feedback signals to control the output halt switching means (29). When the monitoring detects abnormal conditions or when shutdown is needed, the feedback triggers the switching means to interrupt power supply. This feedback loop enables automatic protection while maintaining ease of operation for both normal and abnormal conditions.
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 effectively prevents damage to other vehicle systems by disconnecting the energy inputting circuit in case of failure, ensuring safe operation and maintaining engine control, even when the energy inputting circuit fails, thereby ensuring reliable engine operation and preventing equipment failures.
Implementation Method 1
an ignition coil 2 having a primary winding 3 and a secondary winding 4
Implementation Method 2
an energy inputting circuit 6 which inputs electrical energy from the negative end of the primary winding 3 to the battery voltage supply line a, to thereby continue the secondary current that flows in the secondary winding 4
Data Source
AI summary
When an abnormality judgement section judges that there is a failure of an energy inputting circuit, an energy inputting line, through which electrical energy is inputted from the energy inputting circuit to a primary winding, is changed over to a disconnected state by output halt switching means. As a result, since inputting of electrical energy to the primary winding is thereby halted, problems arising due to continuation of inputting electrical energy to the energy inputting circuit can be prevented, even in the event of a failure of the energy inputting circuit, so that reliability can be enhanced.