Method for sensing closing time of injector using artificial neural network and control method of fuel injector using it

Abstract

The invention relates to a method for sensing the closing time of an injector by using an artificial neural network and a control method of a fuel injector by using the method. A method for sensing a closing time of an injector using an artificial neural network may include: sensing, by a controller, a voltage generated by an injector; performing, by the controller, a preprocess to derive an input matrix using variation characteristics of the voltage; and performing, by the controller, a closing time prediction to derive a closing time of the injector by an artificial neural network model including an input layer including the input matrix, a hidden layer, and an output layer.

Description

technical field [0001] The present invention relates to a method for sensing the closing time of an injector using an artificial neural network and a method for controlling the injector using the method, more particularly, to a method capable of accurately sensing the closing time of an injector and using the sensed injection A method of controlling the closing time of the injector to suit the characteristics of the injector. Background technique [0002] The statements in this section merely provide background information related to the present disclosure and may not constitute prior art. [0003] When fuel is supplied to the engine of the vehicle, the supplied fuel amount is determined by a control unit (ECU), and as much fuel as the determined required fuel amount is injected into the engine through the injector so that the fuel is supplied to the inside of the engine. [0004] Injectors usually consist of solenoid valves and are set for each cylinder. The injector rece...

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Problems solved by technology

[0016] However, it may be difficult to sense the inflection point from the voltage curve depending on the amount of fuel injected (ie injection time)

Specifically, such as Figure 10 As shown, the section A in which the injection time is equal to or less than a specific time refers to a minute fuel amount injection section (so-called ballistic section), wherein, even if the injector operation time T i With a slight change, the fuel mass m also increases suddenly, and it is quite difficult to detect the inflection point from the voltage curve in the corresponding section

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