Hybrid vehicle engine dynamometer calibration control system and control method

Through the hybrid vehicle engine drum calibration control system, the coordinated control of the hybrid vehicle controller and the motor controller is used to achieve full speed-torque area sweep of the hybrid vehicle engine on the vehicle drum, solving the problems of inaccurate control and resource waste in the existing technology and realizing an automated and accurate calibration process.

CN115092114BActive Publication Date: 2025-10-17JIANGLING MOTORS
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Patent Information

Application Number
CN202210839061.1
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2022-07-15
Publication Date
2025-10-17
Estimated Expiration
2042-07-15

AI Technical Summary

Technical Problem

Hybrid vehicles cannot achieve sweep point calibration across the entire speed-torque range on the vehicle drum. The existing manual open-loop control has poor timeliness and accuracy, and requires additional manpower support, resulting in a waste of resources.

Method used

The hybrid vehicle engine drum calibration control system is adopted. Through the coordinated control of the hybrid vehicle controller, engine controller, ISG motor controller, TM motor controller and battery management system, the engine can sweep the full speed-torque area on the vehicle drum. The PID algorithm is used to maintain the engine speed stability, and the torque balance adjustment of the ISG and TM motors is used to automatically complete the calibration.

Benefits of technology

The system achieves stable speed at each torque point in the full speed range of the hybrid vehicle engine, completes calibration automatically without the need for additional human intervention, and improves control accuracy and efficiency.

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Abstract

The application discloses a kind of hybrid vehicle engine drum calibration control system and control method, specifically includes: control vehicle enters engine whole vehicle drum mode;Fixed engine target speed, and real-time adjustment engine actual torque, ISG output torque is adjusted as ISG motor request torque, so that engine actual torque and ISG motor output torque are balanced, keep the speed of engine stable at target speed;Adjust TM motor output torque as TM motor request torque, so that TM motor output torque and ISG motor output torque are balanced, keep high voltage battery pack SOC stable at target value;Adjust engine target speed, carry out engine full speed area calibration, the application is by ISG output torque adjustment as ISG motor request torque, adjust engine actual torque and ISG motor output torque balanced state, automatically realizes the speed stability of each torque point under the engine full speed area on hybrid vehicle.
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