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Injection valve

A technology of injection valves and injectors, applied in low-pressure fuel injection, low-pressure fuel injection, fuel injection devices, etc., to achieve high injection pressure and improve the injection state

Inactive Publication Date: 2012-10-03
ROBERT BOSCH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In injection devices for fluids with shock wave actuators the problem arises that, relative to the ambient pressure, it is necessary to work, for example, with the pressure provided in the combustion chamber
In addition, problems arise with regard to the shape of the stream

Method used

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Examples

Experimental program
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Effect test

Embodiment Construction

[0019] figure 1 A first exemplary embodiment of injection valve 1 is shown in a brief, schematic sectional illustration. Injection valve 1 can be used in particular as injector 1 of a fuel injection system. Such an injector 1 can be an air-compressing compression-ignition internal combustion engine or an ignition-ignition internal combustion engine for hybrid compression. Specifically, the injection valve 1 is used to inject diesel or gasoline into a combustion chamber of an internal combustion engine. The injection valve 1 can of course also be used in an exhaust gas aftertreatment system, for example for the injection of a denitrification system. However, the injector 1 according to the invention is also suitable for other applications.

[0020] The injection valve 1 has an injector body 2 , an injector housing 3 connected to the injector body 2 and a shock wave actuator 4 . The shock wave actuator 4 is arranged here in the injector body 2 . Furthermore, the injector bo...

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PUM

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Abstract

The invention relates to an injection valve (1), which is used in particular as an injector for fuel injection systems or exhaust gas aftertreatment systems, comprising a shock wave actuator (4), a valve closing body (8) that interacts with a valve seat surface (7) to form a sealing seat (9), and a shock wave amplification channel (22). The shock wave amplification channel (22) is used to conduct shock waves (27) generated by the shock wave actuator (4) to the sealing seat (9) and to amplify said shock waves (27).

Description

technical field [0001] The invention relates to an injection valve, in particular an injector for a fuel injection system or an exhaust gas aftertreatment system. Background technique [0002] A spray device for fluids is known from DE 10 2006 026 153 A1. The known spray device has a nozzle and a control element for regulating the flow of fluid sprayed through the nozzle. Furthermore, a shock wave actuator is provided to create a shock wave in the fluid present in the nozzle. Shock waves are generated in the spray device by the shock wave actuator and are transmitted to the fluid in the nozzle. [0003] In fluid injection devices with shock wave actuators, the problem arises that it must work, for example, with the pressure provided in the combustion chamber relative to the ambient pressure. Furthermore, problems arise with regard to the shape of the stream. Contents of the invention [0004] The injection valve according to the invention having the features of claim 1...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02M63/06F02M69/04
CPCF02M69/041F02M63/06
Inventor A·杜卡特O·奥尔哈费尔D·施密特R·吉泽恩登纳-托比恩
Owner ROBERT BOSCH GMBH