A Method for Realizing Injection Control Strategy of Injector

Abstract

The invention relates to a method of a control strategy for realizing jetting of a fuel injector. The method includes the steps that in the operation process of an engine, an ECU controls the on-off states of a fuel injector pre-injection electromagnetic switch, a fuel injector post-injection electromagnetic switch and a fuel injector main injection electromagnetic switch, then a fuel injector pre-injection electromagnet, a fuel injector post-injection electromagnet and a fuel injector main injection electromagnet can be electrified, the magnetism of the fuel injector pre-injection electromagnet, the fuel injector post-injection electromagnet and the fuel injector main injection electromagnet can be changed, under the effect of electromagnetic force, a fuel injector pre-injection rod, a fuel injector post-injection rod and a fuel injector main injection rod move upwards, and therefore pre-injection, post-injection and main injection are realized. According to the method, repeated accurate jetting of the fuel injector can be realized, the combustion phase and the combustion temperature can be controlled, fuel oil can be fully combusted, the thermotechnical conversion efficiency in a cylinder can be improved, the utilization rate of the energy of the fuel oil can be increased, clean combustion in the cylinder can be realized, generation of pollutants is reduced, and energy conservation and emission reduction can be realized.

Description

technical field [0001] The invention relates to a method for the fuel injection control strategy of an in-cylinder direct-injection gasoline engine fuel injector, in particular to a method for realizing the fuel injector injection control strategy. Background technique [0002] The State Council issued the "Plan", which clarified the overall goal of China's automobile energy-saving standards, requiring the average fuel consumption of new passenger cars to reach 5.0L / 100km in 2020; The energy saving and emission reduction of the internal combustion engine should be controlled from the source, that is, the combustion control at the core of the engine to achieve clean combustion and low emission; For the control strategy of the injector, the injection method has stricter requirements. Multiple injections, namely pre-injection, main injection, post-injection and other control methods, are used to achieve multiple precise injections and precise control of the injector; increase t...

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the technical problems existing in the prior art, such as poor atomization of direct injection in cylinders, particles emitted by direct injection in cylinders, and fluctuations in combustion phases, the present invention provides a method for realizing the injection control strategy of the fuel injector

Images