Multi-Fuel Generator Control System Preventing Fuel Mixing
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Solution Overview
Problem
Dual-fuel generators face safety risks due to potential misoperation leading to simultaneous activation of both fuel delivery pipes, resulting in fuel mixing and unstable operation.
Innovation Solution
A control system comprising fuel valve assemblies and a controller that monitor the states of each fuel valve, ensuring only one fuel is supplied to the generator engine, with an ignition device controlled based on specific valve states to prevent simultaneous fuel supply and detect abnormal conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If dual-fuel generators are designed to allow selection between different fuels, then adaptability is improved, but the risk of simultaneous fuel supply and safety hazards increases
Solution Approach 1:
The patent implements a feedback mechanism where the controller continuously monitors the states of both fuel valves through connected switches. When both valves are detected to be in the same state (both open or both closed), the controller receives feedback signals and automatically adjusts the fuel selection by actuating one of the fuel valves to ensure only one fuel type is supplied, thereby eliminating the safety hazard while maintaining adaptability
Solution Approach 2:
The system employs self-service functionality where the controller autonomously detects abnormal fuel supply conditions and automatically corrects them without requiring manual intervention. The controller monitors valve states, identifies when both fuels are supplied or neither is supplied, and self-corrects by adjusting the fuel valve states accordingly, ensuring continuous safe operation
2Ease of operation
If manual control of fuel valves is allowed, then ease of operation is improved, but the risk of misoperation leading to fuel mixing increases
Solution Approach 1:
The patent applies preliminary anti-action by equipping each fuel valve with connected switches that detect valve states before fuel mixing can occur. When a user attempts to operate the fuel selection, the system proactively monitors the valve states and prevents fuel mixing by automatically adjusting the fuel valves if abnormal conditions are detected, thereby eliminating the harmful effect before it can manifest
Solution Approach 2:
The controller serves as an intermediary between the user's fuel selection operation and the actual fuel valve control. Instead of directly controlling the valves, the user operates the controller which then processes the selection through its monitoring and control logic, mediating the operation to ensure safe fuel selection while maintaining ease of use
Data Source
AI summary
A control system and method for a multi-fuel generator engine are mainly applied to multi-fuel generator products. The control system comprises a controller, a first signal input terminal, a second signal input terminal, a third signal input terminal, and an output terminal connected to an ignition device of a generator engine. When the third signal input terminal of the controller receives a generator engine start signal and either the first signal input terminal or the second signal input terminal receives a signal corresponding to an on state of the corresponding valve assembly, the controller controls the ignition device to ignite. According to control system and method, the controller detects signals corresponding to the states of the two fuel valve assemblies to determine whether or not fuels are normally supplied, so that operating instabilities or faults caused by synchronous supply of two fuels to the generator engine are avoided.