Ethanol concentration determination method, apparatus, device, storage medium, and program product
CN122266530APending Publication Date: 2026-06-23CHERY AUTOMOBILE CO LTD
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Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- CHERY AUTOMOBILE CO LTD
- Filing Date
- 2026-03-06
- Publication Date
- 2026-06-23
AI Technical Summary
Technical Problem
In flexible fuel vehicles, the inclusion of an ethanol concentration sensor increases vehicle costs and can lead to inaccurate ethanol concentration readings in case of malfunction, affecting normal engine operation.
Method used
The engine control system uses fuel adjustment factors and pre-stored ethanol concentration correction coefficient maps to iteratively learn and autonomously determine the ethanol concentration, including primary and secondary corrections. The learned value is updated cyclically until the stopping condition is met.
Benefits of technology
Accurately identifying the ethanol concentration in fuel without the need for an ethanol concentration sensor reduces hardware costs and improves vehicle operational stability and safety.
✦ Generated by Eureka AI based on patent content.
Smart Images
Figure CN122266530A_ABST
Abstract
The present disclosure provides an ethanol concentration determination method, device, equipment, storage medium and program product. The method of the present disclosure comprises: determining a fuel adjustment factor and a current ethanol concentration; in response to the fuel adjustment factor being greater than a first threshold, increasing the current ethanol concentration by a learning step; in response to the fuel adjustment factor being less than a second threshold, decreasing the current ethanol concentration by a learning step; substituting the ethanol concentration increased or decreased by a learning step into a pre-stored ethanol concentration correction coefficient diagram to obtain a corresponding correction coefficient; substituting the product of the correction coefficient and the fuel adjustment factor into the ethanol concentration correction coefficient diagram to obtain the latest ethanol concentration learning value; repeating the above steps until the cycle stopping condition is met, and finally obtaining the ethanol concentration learning value as the learned ethanol concentration value. The present disclosure can obtain an accurate ethanol concentration value without the participation of an ethanol concentration sensor.
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