PHEV Fuel Fill Recommendation System
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Solution Overview
Problem
In plug-in hybrid electric vehicles, the reduced engine operation times lead to longer refueling intervals, causing fuel to become old and sour, which can result in acid formation and waxing, and forcing engine operation to utilize stale fuel contradicts user goals of minimizing fuel addition, degrading user satisfaction.
Innovation Solution
A method is implemented to display a recommended engine fuel fill amount based on actual fuel usage history, allowing operators to refill the tank with just enough fuel to prevent souring, thereby reducing the frequency of forced engine operation and maintaining user satisfaction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If forced engine operation is implemented to consume stale fuel, then fuel souring is prevented, but user satisfaction deteriorates due to unnecessary fuel addition
Solution Approach 1:
The system monitors actual fuel consumption patterns and provides feedback to the user through a display interface, showing recommended fuel fill amounts based on real usage data. This allows users to make informed decisions about fuel refilling without forced engine operation, resolving the contradiction between preventing fuel souring and maintaining user satisfaction.
Solution Approach 2:
The system enables users to self-manage fuel consumption by providing them with personalized fuel fill recommendations based on their actual usage patterns. Users can proactively refill fuel to optimal levels without being forced to consume stale fuel through mandatory engine operation, thus maintaining both fuel quality and user satisfaction.
2Loss of energy
If engine operation time is reduced to improve fuel economy, then fuel emissions are reduced, but fuel souring increases due to longer refueling intervals
Solution Approach 1:
The system calculates and displays recommended fuel fill amounts in advance based on predicted fuel consumption patterns. This allows users to refill fuel proactively before souring occurs, enabling reduced engine operation times for emissions reduction while maintaining fuel quality through informed user action rather than forced engine operation.
3Ease of operation
If recommended fuel fill amount is displayed to reduce forced engine operation, then user satisfaction is improved, but fuel souring may occur if users do not follow recommendations
Solution Approach 1:
The system continuously monitors actual fuel consumption and compares it with predicted consumption patterns. When users deviate from recommended fuel fill amounts, the system adjusts subsequent recommendations and provides feedback through the display interface, guiding users back to optimal fuel management practices without forcing engine operation, thus maintaining both user satisfaction and fuel quality.
Data Source
AI summary
Methods and systems are provided for displaying a recommended engine fuel fill amount to an operator of a plug-in hybrid electric vehicle. In one example, the recommended engine fuel fill amount is determined based on an actual amount of fuel consumed over a particular duration and displayed to an operator of the vehicle with a low fuel warning.