Automobile engine control method based on digital twin technology

Abstract

The invention relates to an automobile engine control method based on digital twin technology. The automobile engine is regarded as a physical engine in the actual working environment, based on the digital twin technology, a digital twin virtual engine model which is matched with the physical engine is built on the simulation platform, and the simulation working environment of the virtual engine model is configured; the physical data generated by the operation of the physical engine and the virtual data generated by the operation of the virtual engine model are received by digital thread and alarge plurality of heterogeneous physical data and virtual data are subjected to data analysis fusion processing; and according to the processing results, the virtual engine model is updated, and thecorresponding optimal control strategy under the latest model is obtained based on the physical engine calibration performance and the current state of the vehicle combined with online simulation technology, according to the optimal control strategy, the physical engine is controlled by the engine management system, and the virtual engine model and the optimal control strategy are updated with real-time feedback, so that the dynamic rolling data exchange is formed to realize dynamic optimal control

Description

technical field [0001] The invention relates to the technical field of automobile engine management and control, in particular to an automobile engine management and control method based on digital twin technology. Background technique [0002] The engine in a car is a machine that converts other forms of energy into mechanical energy. It converts the chemical energy of liquid or gas into heat energy through combustion and expansion, and then converts heat energy into mechanical energy through expansion and outputs power externally. The engine is the power of the car. The device is the heart of the entire car. With the increasing restriction of environmental protection policy and energy policy, the application of electronic control technology and the development of automobile engine management system have become more and more key topics in the field of automobile research. Although the existing technology will use the automobile engine management system (abbreviated as EMS)...

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Problems solved by technology

[0004] The present invention aims at the low work efficiency when the automobile engine is controlled by the engine management system EMS in the prior art, it is difficult to keep up with the dynamic and time-varying operating state and performance of the engine, and it is impossible to update the control strategy in a targeted manner to match the time-varying engine, resulting in poor management and control. Timely and unable to detect and warn some potential dangers in advance, a method of automotive engine control based on digital twin technology is provided. This method innovatively introduces digital twin technology and builds a virtual engine model that is completely consistent with the physical engine. Afterwards, the operating data of the two engines are monitored synchronously in the actual working environment and the simulated working environment respectively, and the operating data of the two are analyzed and fused, and then the virtual engine model is dynamically updated accordingly, and the optimal control strategy is obtained based on the latest model. Realize dynamic management and control of the operating state of the physical engine, effectively improving the performance and efficiency of the automotive engine

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