Multiple Filter Controller for Continuous Fuel Flow
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Solution Overview
Problem
In systems reliant on continuous filter operation, such as internal combustion engines, filters often clog or malfunction due to contaminants, leading to operational difficulties and unexpected shut-downs, and existing solutions require system shutdown for filter replacement, causing leakage and inefficiencies.
Innovation Solution
A multiple filter controller system with two in-line filters, a pressure gage, and a vacuum switch that allows automatic or manual switching to a backup filter without shutting down the system, along with a boost pump for efficient bleeding and servicing, enabling continuous operation and reduced fluid leakage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a single filter is used in the fuel system, then the system structure is simple, but the filter will clog and cause engine shutdown eventually
Solution Approach 1:
The filter system is divided into multiple independent filters (primary filter and secondary filter) that can operate separately. Each filter has its own valve control, allowing one filter to be isolated while the other continues to protect the fuel system, thereby achieving continuous operation without requiring a complex centralized control system.
Solution Approach 2:
A backup filter is pre-installed in the system but remains inactive until needed. The system includes pre-positioned valves and a boost pump that are ready to activate the backup filter immediately when the primary filter clogs, eliminating the need for system shutdown and ensuring continuous protection.
2Ease of repair
If the filter is replaced by removing and disassembling the malfunctioning filter, then the filter can be serviced, but the system must shut down causing fluid leakage and priming problems
Solution Approach 1:
The filter assembly is segmented into replaceable modules with independent valve control. The malfunctioning filter can be isolated by closing its valve while the other filter continues to operate, allowing filter replacement without system shutdown and preventing fluid leakage during the servicing process.
Solution Approach 2:
A boost pump serves as an intermediary device that maintains system pressure and enables filter replacement without shutting down the engine. The boost pump allows fluid to be pushed through the remaining functional filter while the malfunctioning filter is being serviced, eliminating priming problems and fluid leakage.
3Loss of time
If the vacuum switch triggers immediate filter switching, then the malfunctioning filter is replaced quickly, but the system may not have time to properly bleed and service the filter
Solution Approach 1:
The system includes a boost pump and bleed valve that are activated in advance to bleed air and service the filter before the actual replacement. This preliminary action ensures the system is properly prepared for filter replacement, allowing quick switching while maintaining proper servicing procedures.
Solution Approach 2:
The system provides dynamic control over the filtering process through electronically controlled valves and a boost pump. The operator can adjust the timing and sequence of filter switching and servicing operations based on real-time system conditions, optimizing both replacement speed and servicing quality.
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
Enables continuous system operation by automatically or manually switching to a functional filter, reducing fluid leakage and priming issues, and facilitating filter maintenance without shutting down the engine, thus maintaining system efficiency and reliability.
Implementation Method 1
A built in pressure gage and vacuum switch allow for easy monitoring of the in-line filter
Implementation Method 2
A built in pressure gage and vacuum switch allow for easy monitoring of the in-line filter
Implementation Method 3
The multiple filter controller may also comprise a boost pump that enhances system bleeding and servicing
Data Source
AI summary
A method for maintaining an efficiently working fuel system comprising: passing the fuel through a first filter of a multiple filter controller; monitoring a level of pressure established within the multiple filter controller as the fuel passes through the first filter, wherein monitoring comprises providing a pressure gage; detecting when the level of pressure has reached a predetermined level, wherein such detecting comprises providing a vacuum switch; redirecting the fuel from the first filter to a second filter when the predetermined level of pressure has been detected, wherein redirecting comprises manipulating an inlet valve of the multiple filter controller such that the inlet valve stops the flow of the fluid to the first filter and redirects the flow of the fluid to a second filter; and repairing or removing the first filter from the fuel system while the fuel is simultaneously flowing through the second filter.