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Method for controlling a switchable valve, in particular an injection valve of an internal combustion engine of a motor vehicle

A switch and valve needle technology, which is applied in the field of controlling valves that can be switched on and off, especially in the field of injection valves of internal combustion engines of motor vehicles, can solve problems such as damage to comfort and slow down, and achieve the effect of reliable valve function

Active Publication Date: 2022-02-01
ROBERT BOSCH GMBH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This behavior leads to the development of a noise impairing the comfort, so that, as is known, the corresponding injection is switched off or interrupted for a defined, empirically acquired period of time shortly before the armature hits the upper stroke stop. The current circuit of the valve, from which a braking pulse slows down the valve movement

Method used

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  • Method for controlling a switchable valve, in particular an injection valve of an internal combustion engine of a motor vehicle
  • Method for controlling a switchable valve, in particular an injection valve of an internal combustion engine of a motor vehicle
  • Method for controlling a switchable valve, in particular an injection valve of an internal combustion engine of a motor vehicle

Examples

Experimental program
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Embodiment Construction

[0026] As already stated in DE 10 2009 047 453 A1, figure 1Components of a solenoid valve 10 are shown schematically, which can be used as an injection valve in an injector 11 for direct fuel injection or intake manifold injection of an internal combustion engine. Currently, the solenoid valve 10 is closed. A solenoid coil 12 with an armature 14 is shown. Furthermore, an inner pole 18 , a cover 34 and a bushing with an outer pole 30 are arranged around the magnetic coil. The armature 14 is delimited axially movable on the valve needle 20 between a lower stop 16 and an upper stop 18 , which is currently a stop fixedly connected to the valve needle. The sleeve, the upper stop part is currently a stop ring fixedly connected with the valve needle. Between the two stops 16 , 18 the armature 14 on the valve needle has an axial play, the so-called armature free path. In the rest state of the armature, the armature is held at the lower stop stroke 16 by the armature spring 32 . V...

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Abstract

The invention relates to a method for controlling a switchable valve, in particular an injection valve of an internal combustion engine of a motor vehicle, the valve comprising a valve needle with a valve seat and an upper stop arranged on the valve needle and an arrangement Downstroke stop on the valve needle, the upper stop and the downstroke stop for a valve guided axially movable relative to the valve needle between these stops An armature, wherein the armature is acted upon with a restoring force directed towards the down-stroke stop, it is provided in particular in the method that when closing the valve, the armature moves from the down-stroke stop for the first time After jumping back, the armature is stopped as far as possible at the upper stop by an additional actuation pulse, wherein the armature is moved to the downward stop after the end of the additional actuation pulse due to the restoring force stop and reach the downstroke stop with a correspondingly reduced kinetic energy.

Description

technical field [0001] The invention relates to a method for controlling a switchable valve, in particular an injection valve of an internal combustion engine of a motor vehicle. The object of the invention is also a computer program, a machine-readable data carrier for storing said computer program and an electronic control device, by means of which computer program, said data carrier and said electronic control device it is possible to carry out the Methods. Background technique [0002] From Fig. 8 on page 565 of the 27th edition of Motor Vehicle Technology Pocket Book (ISBN 978-3-8384-1440-1) there are known switchable solenoid valves for controlling injection valves or injectors, by means of which the fuel It is injected into the intake manifold of the internal combustion engine in a controlled manner. The open and closed positions of the valve needle of the injection valve can be controlled by means of the solenoid valve, whereby the injection opening for injecting t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F02D41/30F02D41/20
CPCF02D41/20F02D41/30F02D2041/2051F02D2041/2003F02D2041/2037F02D2200/063F02D2041/2058F02M2200/09F02M51/061F02M2200/302F02D2041/2055F02M51/06
Inventor H.拉普A.申克朱施魏因斯贝格M.鲍尔
Owner ROBERT BOSCH GMBH
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