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Method for reducing performance variation of an electromagnetically-activated actuator

An electromagnetic starting and actuator technology, applied in electrical control, engine control, engine components, etc., can solve problems such as unstable fuel injection

Active Publication Date: 2015-10-14
GM GLOBAL TECH OPERATIONS LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is known that the effect of fuel injection quality greater than the required delivery quantity is only compensated for by adjusting the injection duration of subsequent injection events; however, the corresponding subsequent fuel injections may still become unstable, leading to unacceptable reproducibility

Method used

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  • Method for reducing performance variation of an electromagnetically-activated actuator
  • Method for reducing performance variation of an electromagnetically-activated actuator
  • Method for reducing performance variation of an electromagnetically-activated actuator

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Embodiment Construction

[0055] The present disclosure describes concepts of the presently claimed subject matter with respect to exemplary applications of linear motion fuel injectors. However, claimed subject matter applies more broadly to any linear or non-linear electromagnetic actuator employing an electric coil to induce a magnetic field within a magnetic core, thereby producing an attractive force on a movable armature. Typical examples include fluid control solenoids, gasoline or diesel or CNG fuel injectors employed on internal combustion engines, and non-fluid solenoid actuators for positioning and control.

[0056] Referring now to the drawings, wherein these figures are for illustration of certain exemplary embodiments only and not for limitation of these exemplary embodiments, Picture 1-1 A non-limiting exemplary embodiment of an electromagnetically activated direct injection fuel injector 10 is schematically shown. While solenoid activated direct injection fuel injectors are depicted in...

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Abstract

A method for reducing performance variation of an electromagnetically-activated actuator having an electrical coil and an armature includes providing actuator activation signals to the electromagnetically-activated actuator. The signals include current driven through the electrical coil in a first direction. The method detects unacceptable response variations in the armature to equivalent actuator activation signals. And, subsequent to detection of unacceptable response variations in the armature, current is driven through the electrical coil in a direction opposite that of the first direction following actuator activation signals.

Description

[0001] Cross References to Related Applications [0002] This application claims the benefit of US Provisional Patent Application No. 61 / 975,115, filed April 4, 2014, which is incorporated herein by reference. technical field [0003] The present disclosure relates to solenoid activated actuators. Background technique [0004] The statements in this section merely provide background information related to the present disclosure. Accordingly, such statements are not intended to constitute an admission of prior art. [0005] Fuel injectors are used to inject pressurized fuel directly into the combustion chamber of an internal combustion engine. Known fuel injectors include electromagnetically activated solenoid devices that overcome a mechanical spring to open a valve located at the injector tip, thereby allowing fuel to flow through the injector. The injector drive circuit controls the flow of electrical current to the solenoid actuated solenoid device to open and close th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02M51/06F02D41/30
CPCF02D41/20F02D41/221F02D41/3809F02D2041/2051F02D19/0623F02D41/22F02D41/222F02D41/402F02D2041/202F02D2041/2055F02D2041/2072F02D2041/389
Inventor S.E.帕里什R.J.津克
Owner GM GLOBAL TECH OPERATIONS LLC