Control method and device for electric control system of flexible fuel engine, medium and vehicle

By adding oil return devices in low-pressure oil supply systems and using Kalman filtering algorithms, the flexible fuel ratio is calibrated in real time, and the problem of difficulty in accurately obtaining proportions when proportions change is solved, achieving high-precision proportion acquisition and engine stability run.

CN119467119APending Publication Date: 2025-02-18AURORA BAY (TAIZHOU) ENGINE CO LTD +1
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Patent Information

Application Number
CN202411682160.9
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-11-22
Publication Date
2025-02-18

AI Technical Summary

Technical Problem

When the mixed fuel ratio of flexible fuel engines changes, it is difficult to accurately obtain the mixed fuel ratio injected into the engine, resulting in air-fuel ratio deviations and may cause engine failure or misfire.

Method used

By adding oil return devices to the low-pressure oil supply system, combined with the Kalman filtering algorithm, the vehicle's current working condition information and flexible fuel ratio historical value can be used to calibrate and adjust the flexible fuel ratio in real time to ensure the obtained proportional data is accurate.

Benefits of technology

It realizes accurate acquisition of flexible fuel ratios in different scenarios, improves the accuracy of proportion acquisition, ensures stable engine operation, and meets the accuracy requirements of fuel energy consumption calculation.

✦ Generated by Eureka AI based on patent content.

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Abstract

The invention relates to an electric control system control method and device of a flexible fuel engine, a medium and a vehicle, and the method comprises the steps that a target scene currently met by the vehicle is determined according to current working condition information of the vehicle; determining a target control strategy of 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 to obtain a flexible fuel proportion observation value collected by a flexible fuel proportion sensor; acquiring a flexible fuel proportion historical value related to proportion calibration in the target scene; and according to the flexible fuel proportion historical value and the flexible fuel proportion observed value, the current flexible fuel proportion value of the vehicle is determined. By adopting the technical scheme, the current flexible fuel proportion values in different scenes are accurately obtained, the accuracy of the obtained flexible fuel proportion is improved, and data support is provided for ensuring stable operation of a flexible fuel engine and accurate calculation of fuel energy consumption.
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Citation Information

Cited By

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

    WO2026109018A1