Engine knock detection method, device, equipment and storage medium based on decision tree

Abstract

The invention relates to the field of automobiles, and discloses an engine knock detection method, device, equipment and storage medium based on a decision tree. The engine knock detection method based on decision tree among the present invention comprises: obtain the running data of engine, and running data comprises the model of engine, running condition, the knock sensor signal of each cylinder when running with running condition in predetermined cycle; The operating data of the engine is input into the knock classification model to determine whether each cylinder of the engine knocks within a predetermined period. The knock classification model is obtained by inputting multiple data samples of various types of engines into a decision tree classifier. of. The invention can realize the knock detection of various types of engines without installing a pressure sensor inside the cylinder of the engine, thereby greatly reducing the detection cost.

Description

technical field [0001] The present invention relates to the field of automobiles, in particular to a method, device, device and storage medium for engine knock detection based on a decision tree. Background technique [0002] With the improvement of people's awareness of environmental protection and the demand caused by energy shortage and rising prices, as well as the support of the development of computer technology such as large-scale integrated circuits, the engine electronic control system has become an essential equipment for automobiles. The electronic control system of gasoline engine can be divided into open-loop control and closed-loop control system according to the control mode. In the open-loop electronic control system, the electronic control unit (ECU) controls according to the parameters of each working condition according to the pre-programmed program. In the closed-loop electronic control system, a feedback sensor is added, which enables the ECU to perform...

AI Technical Summary

Problems solved by technology

Can be done under experimental conditions, but it will cause high cost for actual production mode

[0007] For the traditional knock detection method, the experimental environment is often for a single engine for multiple repeated parameter adjustment experiments, which is not conducive to the actual production environment

When a new engine type appears, it is necessary to carry out the detonation test on the engine again, and the cost and manpower are high

Moreover, the traditional knock detection method needs to install a pressure sensor in the cylinder. This type of sensor is often expensive and has a short life.

It is acceptable in the experimental environment, but the cost is relatively high if it is actually put into the production environment

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