Carbon deposition amount calculation method, device, controller and vehicle for particulate filter

CN117569904BActive Publication Date: 2026-07-03UNITED AUTOMOTIVE ELECTRONICS SYST
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
UNITED AUTOMOTIVE ELECTRONICS SYST
Filing Date
2023-11-23
Publication Date
2026-07-03

AI Technical Summary

Technical Problem

Existing technologies for calculating the carbon accumulation of particulate filters are not accurate enough under complex and special operating conditions, and the calibration cost is high.

Method used

By acquiring the engine's real-time fuel injection quantity, real-time operating condition carbon accumulation correction coefficient, and fuel carbon accumulation correction coefficient, and combining it with coolant temperature, dynamic operating conditions, and catalyst heating correction coefficient, the real-time carbon accumulation of the particulate matter filter is calculated. The equivalent fuel injection quantity method is used to avoid the need for calibration of particulate matter concentration measurement equipment and measured emission values.

Benefits of technology

It reduced equipment and manpower costs, improved calculation accuracy, especially under special working conditions, and shortened the development cycle.

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Abstract

The application provides a carbon accumulation amount calculation method and device of a particulate filter, an electronic controller for a vehicle and the vehicle. The carbon accumulation amount calculation method comprises the following steps: obtaining a real-time fuel injection amount of an engine; obtaining a real-time working condition carbon accumulation amount correction coefficient of the engine under a current working condition; obtaining a fuel carbon accumulation amount correction coefficient of fuel converted into particulate matter; calculating a real-time carbon accumulation amount of the particulate filter according to the fuel injection amount and the real-time working condition carbon accumulation amount correction coefficient and the fuel carbon accumulation amount correction coefficient; and calculating the carbon accumulation amount of the particulate filter according to the real-time carbon accumulation amount. The application can greatly reduce the calibration cost and improve the calculation accuracy of the carbon accumulation amount in the particulate filter under complex and special working conditions.
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