Control method and apparatus for electronic control system of flexible fuel engine, and medium and vehicle

By adding a return oil device and a Kalman filter algorithm to the low-pressure fuel supply system, and determining the target control strategy based on vehicle operating condition information, the problem of inaccurate fuel ratio acquisition in flexible fuel engines is solved, and stable engine operation and accurate calculation of fuel energy consumption are achieved.

WO2026109018A1PCT designated stage Publication Date: 2026-05-28AUROBAY (NINGBO) INTELLIGENT TECHNOLOGY CO LTD +1
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Patent Information

Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
Filing Date
2025-11-24
Publication Date
2026-05-28

AI Technical Summary

Technical Problem

Existing flexible fuel engine electronic control systems have difficulty accurately obtaining the fuel ratio, resulting in deviations in the engine's air-fuel ratio, which may lead to engine misfire or stalling, and they also fail to meet the accuracy requirements of on-board fuel consumption monitoring devices.

Method used

By adding a return oil device to the low-pressure fuel supply system and combining it with the Kalman filter algorithm, the target scenario is determined based on the vehicle operating condition information. The target control strategy is used to obtain the observation values ​​of the flexible fuel ratio sensor, and the historical fuel ratio values ​​are used for calibration to improve the accuracy of fuel ratio acquisition.

Benefits of technology

It enables accurate and flexible fuel ratio acquisition in different scenarios, ensuring stable engine operation, meeting fuel consumption calculation accuracy requirements, and improving user experience and engine performance.

✦ Generated by Eureka AI based on patent content.

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Abstract

A control method for an electronic control system of a flexible fuel engine. The method comprises: on the basis of current operating condition information of a vehicle, determining a target scene that the vehicle currently satisfies (S101); determining a target control strategy for a low-pressure oil supply system corresponding to the target scene, and controlling the low-pressure oil supply system according to the target control strategy, so as to acquire an observed flexible fuel ratio value collected by means of a flexible fuel ratio sensor (S102); acquiring a historical flexible fuel ratio value related to ratio calibration performed in the target scene (S103); and on the basis of the historical flexible fuel ratio value and the observed flexible fuel ratio value, determining a current flexible fuel ratio value of the vehicle (S104). Further provided are a control apparatus for an electronic control system of a flexible fuel engine, and an electronic device, a computer-readable storage medium, a computer program product and a vehicle.
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Citation Information

Patent Citations

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