Vehicle Controller Oil Change Timing with Battery Degradation
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Solution Overview
Problem
Existing vehicle controllers only consider lubricating oil degradation when calculating oil change time, potentially leading to starting issues due to battery degradation, even if the lubricating oil has not degraded significantly.
Innovation Solution
A controller that calculates the oil change time based on both lubricating oil and battery degradation, with adjustments made as battery degradation increases, and incorporates ambient temperature prediction to determine the optimal oil change time, ensuring the internal combustion engine can be started reliably.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the oil change time is calculated based only on lubricating oil degradation degree, then the calculation is simple, but the internal combustion engine may be unable to be started due to battery degradation
Solution Approach 1:
The patent combines multiple degradation factors (lubricating oil degradation degree and battery degradation degree) into a unified oil change time calculation system. The controller integrates both degradation parameters to determine the optimal oil change time, ensuring that the engine can be reliably started while accounting for both oil and battery conditions.
Solution Approach 2:
The patent changes the calculation parameters from solely oil degradation-based to a dual-parameter system incorporating both oil degradation degree and battery degradation degree. This parameter expansion allows the system to predict engine starting capability more accurately and set the oil change time accordingly.
2Reliability
If the oil change time is calculated considering both lubricating oil and battery degradation, then the engine starting reliability is improved, but the calculation complexity increases
Solution Approach 1:
The controller automatically acquires and processes both lubricating oil degradation data and battery degradation data, performing the integrated calculation without external intervention. The system self-manages the multi-parameter assessment and determines the optimal oil change time based on the combined degradation states.
3Reliability
If the oil change time is set earlier due to high battery degradation, then the engine can be started reliably, but the oil change frequency increases
Solution Approach 1:
The patent implements a dynamic oil change time determination system that adjusts the oil change schedule based on the actual degradation states of both the lubricating oil and battery. Rather than using a fixed schedule, the system continuously evaluates the combined degradation parameters and dynamically sets the optimal oil change time, balancing reliability with operational efficiency.
Data Source
AI summary
A controller for a vehicle is configured to execute a lubricating oil degradation degree acquisition process that calculates a degradation degree of a lubricating oil that lubricates an internal combustion engine, a battery degradation degree acquisition process that calculates a degradation degree of a battery, and an oil change time calculation process that calculates an oil change time for the lubricating oil from the degradation degree of the lubricating oil and the degradation degree of the battery. The oil change time calculation process includes calculating the oil change time so as to become earlier as the degradation degree of the battery increases.