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Electromagnet assembly and injection valve having the same

A technology of injection valve and electromagnet, applied in the direction of electromagnet with armature, electromagnet, fuel injection device, etc., can solve the problems of unreasonable voltage and unfavorable closing process of solenoid valve, etc.

Active Publication Date: 2012-02-22
ROBERT BOSCH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If this increased voltage is maintained during the holding phase of the solenoid valve, this in turn has a detrimental effect on the closing process of the solenoid valve
In addition, from an economic point of view, it is not reasonable to increase the voltage during the maintenance phase.

Method used

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  • Electromagnet assembly and injection valve having the same
  • Electromagnet assembly and injection valve having the same
  • Electromagnet assembly and injection valve having the same

Examples

Experimental program
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Embodiment Construction

[0025] Depend on figure 1 A known injection valve can be seen which comprises a solenoid assembly for direct actuation of an injection valve element 11 . The injection valve element 11 is received in a central opening 14 of a housing part 15 so as to be movable up and down, wherein at least one injection opening 12 of the injection valve can be released or closed by the lifting movement of the injection valve element 11 . A section of the central bore 14 is used for the introduction of high pressure, by means of which fuel under high pressure is supplied to at least one injection opening 12 . The fuel under high pressure reaches the bore 14 via a laterally arranged high-pressure channel 16 .

[0026] Injection valve element 11 is accommodated in housing part 15 , to which a further housing part 17 is connected, in which housing part 17 the solenoid assembly is arranged. The electromagnet assembly includes a magnetic core 1, an electromagnet coil 3 received in the magnetic core...

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PUM

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Abstract

Disclosed is an electromagnet assembly of an injection valve used for injecting fuel into a combustor of a combustion engine, wherein the injection valve is provided with an injection valve component (11) which is used for releasing or closing at least one jet hole (12) and can perform a lifting motion, wherein the electromagnet assembly used for directly or indirectly operating the injection valve component comprises a magnetic core (1), a solenoid coil (3) contained in a groove (2) of the magnetic core, a lifting-motion armature (4) which is matched with the solenoid coil and formed by a single component or a plurality of components, and a permanent magnet (5). According to the invention, the permanent magnet is combined in the magnetic core or the armature to generate a basic magnetic flux, the basic magnetic flux amplifies or attenuates a magnetic force acting on the armature when a current flows in the solenoid coil. The present invention also relates to the injection valve having the electromagnet assembly and an application of the permanent magnet for polarizing the electromagnet assembly.

Description

technical field [0001] The invention relates to an electromagnet assembly for an injection valve for injecting fuel into a combustion chamber of an internal combustion engine, the injection valve being provided with a liftable injection valve element for releasing or closing at least one injection orifice, wherein the electromagnet assembly is used for The injection valve element is operated directly or indirectly. An electromagnet assembly of the type described also has the further features of the preamble of claim 1 . Furthermore, the invention relates to an injection valve for injecting fuel into a combustion chamber of an internal combustion engine and having a solenoid assembly for directly or indirectly actuating an injection valve element. Background technique [0002] The use of electromagnet actuators for directly or indirectly controlling injection valves has long been known from the prior art. Electromagnetic actuators can primarily control servo valves or direc...

Claims

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Application Information

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IPC IPC(8): H01F7/08F02M51/06F16K31/06
CPCF02M51/0689
Inventor M·贝耶尔
Owner ROBERT BOSCH GMBH