A type selection method and device for a fuel injector

Abstract

The invention provides an oil atomizer model selection method and device. The oil atomizer model selection method includes the steps of determining electronic control parameter boundary values corresponding to operating points of oil atomizers to be selected, wherein electronic control parameters include EGR valve opening, main atomizing advance angles and rail pressure; conducting experiment design on the operating points with a V optimum selecting method or a D optimum selecting method within electronic control parameter boundaries, obtaining sampling electronic control parameter combinations corresponding to the operating points, and leading the sampling electronic control parameter combinations into a rack to obtain experiment data; building electronic control parameter models of the oil atomizers to be selected with the experiment data, wherein the electronic control parameter models are used for forecasting experiment data corresponding to non-sampling electronic control parameter combinations; setting a target limit value, and determining engine performance curves corresponding to the oil atomizers to be selected with the loop optimization method; determining the optimum oil atomizer from the oil atomizers to be selected according to the engine performance curves. Compared with the model selecting mode that detection is manually carried out one by one at present, the oil atomizer model selection method has the advantages that a large amount of time and labor and a large number of material resources are saved, and the model selection result is accurate and objective.

Description

technical field [0001] The invention relates to a type selection method and device for a fuel injector. Background technique [0002] As an important part of the diesel engine fuel supply system, the fuel injector plays a decisive role in the performance and emission of the diesel engine. [0003] At present, the selection of fuel injectors is mostly done manually, and the best fuel injector suitable for the engine is selected from many fuel injectors by inspecting the fuel injectors one by one, which makes the existing fuel injector selection process complicated , takes a long time, and there is a problem that the selection result is greatly affected by human experience through manual selection. Contents of the invention [0004] The embodiments of the present invention provide a fuel injector type selection method and device, which realize fast and accurate fuel injector type selection through simulation. [0005] For this reason, the embodiment of the present inventio...

AI Technical Summary

Problems solved by technology

[0003] At present, the selection of fuel injectors is mostly carried out manually, and the best fuel injector suitable for the engine is selected from many fuel injectors by inspecting the fuel injectors one by one, which makes the existing fuel injector selection process complicated , takes a long time, and there is still a problem that the selection result is greatly affected by human experience through manual selection

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