Fuel Filter Maintenance Control Based on Alcohol Percentage
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Solution Overview
Problem
In vehicles with engines that use fuels containing gasoline and alcohol, conventional fuel filter maintenance schedules can lead to unnecessary maintenance due to variable clogging rates, resulting in additional costs and trouble, as clogging may occur before or after the predetermined traveled distance.
Innovation Solution
A vehicle system that includes a percentage determining device to assess the alcohol percentage in fuel, a counting device to track relevant parameters, and a notification device to inform the user when filter maintenance is necessary, allowing for more accurate timing of fuel filter maintenance based on alcohol concentration and traveled distance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If fuel filter maintenance is performed based on a predetermined traveled distance, then the fuel filter can be replaced before clogging occurs, but maintenance may be performed unnecessarily early when clogging does not occur, resulting in additional cost and trouble
Solution Approach 1:
The patent changes the maintenance criterion from a fixed traveled distance to a dynamic parameter based on alcohol percentage in the fuel. When alcohol percentage exceeds a threshold, the maintenance counter increments faster, reflecting higher clogging risk. This parameter-based approach allows the system to adapt maintenance timing to actual fuel conditions, preventing both premature and delayed maintenance.
Solution Approach 2:
The system continuously monitors alcohol percentage in the fuel and uses this feedback to dynamically adjust the maintenance counter. The control unit reads alcohol percentage data, compares it against thresholds, and modifies the counter increment accordingly. This closed-loop feedback mechanism ensures maintenance is triggered only when actual conditions warrant it, eliminating unnecessary maintenance events.
2Reliability
If the traveled distance criterion for fuel filter maintenance is reduced uniformly for all vehicles, then clogging can be prevented in vehicles using high-alcohol fuel, but maintenance will be performed unnecessarily in vehicles using low-alcohol fuel, increasing overall maintenance costs
Solution Approach 1:
The system changes the maintenance criterion from a uniform traveled distance to a dynamic calculation based on alcohol percentage. The maintenance counter increments by different amounts depending on the measured alcohol percentage, creating a customized maintenance schedule for each vehicle based on its actual fuel composition. This eliminates the need for uniform early maintenance across all vehicles.
Solution Approach 2:
The patent applies local quality by tailoring the maintenance criterion to each vehicle's specific fuel conditions. Instead of a blanket maintenance schedule, each vehicle receives a customized maintenance counter increment based on its local fuel alcohol percentage. This localized approach ensures maintenance is performed only when necessary for each individual vehicle, reducing overall maintenance costs.
3Loss of time
If fuel filter maintenance is delayed until a longer traveled distance, then unnecessary maintenance is reduced, but the fuel filter may become clogged and cause vehicle operation problems
Solution Approach 1:
The system uses parameter changes by monitoring alcohol percentage and dynamically adjusting the maintenance counter increment. When alcohol percentage is high, the counter increments faster, triggering maintenance earlier to prevent clogging. When alcohol percentage is low, the counter increments slower, allowing extended maintenance intervals. This dynamic parameter adjustment balances maintenance frequency with actual clogging risk.
Solution Approach 2:
The control unit continuously receives feedback on alcohol percentage and adjusts the maintenance counter accordingly. This real-time feedback ensures the system responds to changing fuel conditions, triggering maintenance when high alcohol content increases clogging risk while allowing longer intervals when low alcohol content presents minimal risk.
Data Source
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AI summary
A vehicle includes: an engine capable of producing a driving force by combustion of a fuel containing gasoline and alcohol; and a fuel filter located inside a fuel tank that stores the fuel or inside a fuel passage. The vehicle further includes: a percentage determining unit 105 that determines an alcohol percentage in the fuel; a first counting unit 110 that counts a value of a first parameter; a first determination unit 115 that determines whether or not the value of the first parameter has reached a first determination value; and a notification unit 120 that provides notification upon determination by the first determination unit 115 that the value of the first parameter has reached the first determination value.