Method for actuating an electromagnetic actuator device having a coil

A technology for adjusting devices and coils, applied to electromagnets with armatures, electromagnets, valve devices, etc.

Active Publication Date: 2015-04-29
VTESCO TECH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] Due to the application of permanent magnets, this induced voltage is

Method used

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  • Method for actuating an electromagnetic actuator device having a coil
  • Method for actuating an electromagnetic actuator device having a coil
  • Method for actuating an electromagnetic actuator device having a coil

Examples

Experimental program
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Embodiment Construction

[0015] according to image 3 and 4 , a voltage is first applied to the coil of the Sp electromagnetic adjustment device, which causes a current to flow, which is large enough to set the non-permanently magnetic tappet in motion and then held in the extended position by an almost constant current, and then by Turning off the higher voltage ends the operation. This is shown by the curve denoted by I.

[0016] However, in the manner according to the invention, the voltage at the coil is not switched off, but is reduced to a value which on the one hand is not sufficient to operate the tappet again due to the resulting current, but on the other hand is large It is sufficient to magnetize the tappet so that due to its mechanically induced movement from the outside it induces a sufficiently high reverse voltage which can be detected with simple means.

[0017] here, image 3 Magnetizing energization with a nearly constant continuous current is shown denoted by III, while at Fig...

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PUM

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Abstract

A method for actuating an electromagnetic actuator device having a coil includes providing a plunger to be activated having at least one section movably disposed in the magnetic field, after activation of the plunger, reducing a voltage again by applying an electrical voltage to end the activation, and after an end of the electrical activation of the plunger, applying a magnetization voltage, which is not sufficient for an activation, to the coil for a predefined time period.

Description

technical field [0001] The invention relates to a method for actuating an electromagnetic adjusting device with a coil, in the magnetic field of which at least one segment of a tappet to be actuated is arranged displaceably, wherein after the tappet is actuated by applying a voltage, in order to end The operation in turn reduces the voltage. Background technique [0002] A large number of electromagnetic adjustment devices are used in motor vehicles. Thus, in addition to an electric motor, for example a windshield regulator motor or a wiper motor, a coil is used, by means of the magnetic field of which the tappet is actuated. For example, these can be part of a solenoid injection valve, but also part of an adjusting device, for example, via the position of which a movable cam can be actuated. [0003] Such an electromagnetic adjustment device for operating eg a movable cam for variable valve adjustment of an internal combustion engine in a motor vehicle is known from WO 03...

Claims

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Application Information

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IPC IPC(8): H01F7/16H01F7/122F01L13/00F01L1/047
CPCH01F7/1805H01F7/1607H01F7/18
Inventor J·马泽
Owner VTESCO TECH GMBH
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