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Method and system for correcting fuel injector opening time and fuel injection pulse width

A technology of fuel injection time and opening time, which is applied in fuel injection control, machine/engine, engine control, etc., and can solve problems affecting engine power, economy, and exhaust emissions.

Inactive Publication Date: 2017-01-25
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

After the fuel injector ages, although the control voltage pulse width duration has not changed, the actual opening time and fuel injection duration of the fuel injector have changed. If the actual fuel injector opening time and fuel injection pulse width are not corrected, It is bound to affect the power, economy and exhaust emission of the engine

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  • Method and system for correcting fuel injector opening time and fuel injection pulse width
  • Method and system for correcting fuel injector opening time and fuel injection pulse width
  • Method and system for correcting fuel injector opening time and fuel injection pulse width

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Embodiment Construction

[0033] In order to describe the technical content, structural features, achieved goals and effects of the present invention in detail, a detailed description will be given in conjunction with the embodiments and accompanying drawings. The present invention will be described in further detail below in conjunction with the accompanying drawings and specific implementation methods.

[0034] A fuel injector opening time and fuel injection pulse width correction system, comprising: fuel supply system 11, fuel injector 21, fuel injection controller 14; also includes: fuel injector current measuring device 15; data storage device 13; The engine calibration parameter storage unit 17 stores the original injector fuel injection duration t 0 , Injector delay injection time Δt 0 , fuel injection pulse time starting point, fuel injection pulse width T 0 information; correction unit 18 stores fuel supply advance angle θ x , the corrected fuel injection pulse width T 1 .

[0035] The fu...

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Abstract

The invention relates to an oil sprayer opening time and oil spraying pulse width correcting method and system. The simple and quick oil sprayer needle valve response time measuring method and system are provided by adjusting the oil spraying advance angle and the oil spraying pulse width. The correcting system comprises a fuel oil feeding system, an oil sprayer, an oil spraying controller, an oil sprayer current measuring device, a data storage device, an engine calibration parameter storage unit and a correction unit. When an engine is started, oil sprayer opening time and oil spraying pulse width correcting can be completed quickly.

Description

[0001] Technical field: [0002] The invention relates to an electromagnetic fuel injector, in particular to a method and system for correcting the opening time and fuel injection pulse width of the fuel injector. [0003] Background technique: [0004] In the engine fuel injection system, the fuel injector is one of the key components. Accurate fuel injection timing and fuel injection volume control directly affect the engine's power, economy and exhaust emissions. [0005] Usually, the structure diagram of the electromagnetic injector is as follows: figure 1 As shown, it is mainly composed of electromagnetic coil 1, injector housing 2, armature 3, needle valve 4, spring 5, nozzle hole 6, stopper 7, terminal post 8, yoke 9 and other parts. The needle valve at the head of the injector is integrated with the armature, and the movement law of the needle valve is consistent with that of the armature. When the electromagnetic coil of the fuel injector receives the pulse voltage o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F02D41/30
Inventor 姚春德银增辉陈志方耿培林窦站成
Owner TIANJIN UNIV