Electromagnetic actuator calculation optimization method

Abstract

The invention aims to provide an electromagnetic actuator calculation optimization method, and the method comprises the following steps: setting an optimization target characteristic of an electromagnetic actuator, and optimizing an independent variable; establishing a magnetic field model of the electromagnetic actuator, and obtaining an optimized transfer function between the target characteristic and the independent variable; performing first part of optimization, wherein in the first part of optimization, starting response time and energy conversion efficiency are taken as optimization target characteristics, and peak voltage, peak current and peak stage duration in a peak stage are taken as independent variables of the optimization target characteristics; and performing second part ofoptimization, wherein in the second part of optimization, the energy conversion efficiency is further improved, the closing response time is taken as an optimization target characteristic, and the holding current is taken as an independent variable of the optimization target characteristic. According to the method, the problem that high energy conversion efficiency cannot be simultaneously met when the electromagnetic actuator pursues high dynamic response is solved, parameter optimization of high-response and low-energy-consumption target characteristics of the electromagnetic actuator can be realized, the reliability of the electromagnetic actuator is improved, and the service life of the electromagnetic actuator is prolonged.

Description

technical field [0001] The invention relates to an electromagnetic actuator, in particular to an optimization method for an electromagnetic actuator of a fuel injector of a diesel engine. Background technique [0002] The electronically controlled high-pressure common rail system is the core key system of a modern diesel engine, and the high-speed electromagnetic actuator is the core control component of the common rail injector. When the response time of the electromagnetic actuator is long, the accuracy of the fuel injection timing of the common rail system will be greatly reduced, which will lead to the deterioration of the injection consistency of each cylinder of the multi-cylinder diesel engine. When the closing response time of the electromagnetic actuator is long, the needle valve of the injector closes too slowly, which makes the fuel atomization in the later stage of injection poor, and the large particle fuel increases the soot of the diesel engine and deteriorate...

AI Technical Summary

Problems solved by technology

In the pursuit of high response characteristics, a larger drive current has to be used to achieve it, but this increases the energy loss of the electromagnetic actuator, and the rapid high frequency increases the internal temperature rise of the electromagnetic actuator, which will greatly reduce the electromagnetic actuator. service life

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