CO Sensor-Controlled Breaker for Generator Engine Shutdown
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Solution Overview
Problem
Existing internal combustion engines with generators lack a robust and reliable mechanism to safely shut down in the presence of excessive carbon monoxide concentrations without interfering with the control unit.
Innovation Solution
A breaker controlled by a CO sensor is integrated into the electrical line of the control unit, which opens when a predetermined CO limit is exceeded, interrupting the electrical supply to the control unit or essential operating units like the spark plug or fuel valve, ensuring the engine shuts down safely.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a CO sensor controlled breaker is integrated into the electrical line to interrupt power supply when CO limit is exceeded, then safety against excessive CO concentrations is improved, but device complexity increases due to additional components (CO sensor, breaker, control module)
Solution Approach 1:
A breaker is introduced as an intermediary component between the power supply and the control unit. The breaker is controlled by a CO sensor through a control module that monitors CO concentrations and activates the breaker when limits are exceeded, thereby safely interrupting the electrical line without directly modifying the control unit itself.
Solution Approach 2:
The system is segmented into independent functional modules: a CO sensor for detection, a control module for evaluation and decision-making, and a breaker for execution. This modular approach allows the safety function to be added without integrating complexity into the existing control unit, making the system more maintainable and adaptable.
2Reliability
If the breaker is arranged in the incoming electrical line to the control unit, then the engine can be switched off reliably without intervention in the control unit, but the control unit loses power completely which may affect other functions
Solution Approach 1:
The shutdown function is extracted from the control unit itself and implemented through an external breaker controlled by a CO sensor. This allows the control unit to remain intact and potentially operational for other functions while the breaker independently handles the shutdown mechanism by interrupting the incoming electrical line when CO limits are exceeded.
3Reliability
If the breaker interrupts the electrical line to essential operating units like spark plug or fuel valve, then the engine stops immediately ensuring safety, but the system requires precise identification and isolation of critical components
Solution Approach 1:
The breaker is pre-configured in the electrical line to essential operating units such as the spark plug or fuel valve. This preliminary arrangement ensures that when the CO sensor detects excessive concentrations and the control module activates the breaker, the engine stops immediately by interrupting power to these critical components, without requiring real-time identification or complex isolation procedures.
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
The system effectively prevents the engine from operating in hazardous CO conditions by safely shutting it down without altering the control unit, enhancing safety and reliability.
Implementation Method 1
A CO sensor 42, which generates an output signal depending on the CO concentration, is arranged in the housing
Implementation Method 2
The breaker 41 opens or closes an electrical connection between the input 33 and the output 35 of the structural unit 31
Data Source
AI summary
A generator provides a supply voltage for an electrical consumer. It includes an internal combustion engine driving the generator. An electrical control unit has an incoming electrical line for supplying an operating voltage thereto. The control unit further has at least one outgoing electrical line. The outgoing electrical line is connected to at least one operating unit that is necessary for operating the internal combustion engine. In order to switch off the internal combustion engine in the event of an increased CO concentration in the vicinity of the generator, a breaker is arranged in an electrical line of the control unit. The breaker is controlled by a CO sensor, which is designed to open the breaker and interrupt the electrical line when a predeterminable CO limit value is exceeded.