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Valve sleeve of an injector and manufacturing method therefor

A technology for injectors and valve sleeves, applied in fuel injection devices, special fuel injection devices, machines/engines, etc., can solve the problems of low efficiency, small geometric size, high cost, etc., and achieve the effect of low cost and optimized manufacturing methods

Inactive Publication Date: 2018-10-26
ROBERT BOSCH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The production of complex geometries in the valve sleeve is particularly costly and thus inefficient due to the production methods used and the large number of undercuts and the very small geometric dimensions

Method used

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  • Valve sleeve of an injector and manufacturing method therefor
  • Valve sleeve of an injector and manufacturing method therefor
  • Valve sleeve of an injector and manufacturing method therefor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0021] Refer to the attached Figures 1 to 4 An injector and a valve sleeve according to a first preferred embodiment of the present invention are explained in detail.

[0022] figure 1 shows a longitudinal section through an injector 1 with a valve sleeve 3 according to the invention, which in particular comprises a pressure chamber 5 surrounded by a valve sleeve 3 and an injector housing 4, the closing element 6 being accessible by an actuator 60 is arranged movable in said pressure chamber along the longitudinal axis X-X. The pressure chamber 5 is connected, for example, to a storage device via a high-pressure channel not shown and passes through the storage device at a temperature of up to 350×10 5 Media 8 filling at very high pressure of Pa. By moving the closing element 6 along the longitudinal axis X-X, the closing element 6 cooperates with a closing element seat 13 formed in the valve sleeve 3 and opens and closes the injection opening 15 . figure 1 and figure 2 ...

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PUM

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Abstract

The invention relates to a valve sleeve (3) of an injector (1) for injecting a medium (8), in particular for injecting a fuel, comprising at least one cylinder sleeve (10) and an injector head (11), the injector head (11) having a closure element seat (11). 13) and at least one injection hole (15), and wherein the injector head (11) is materially bonded to the cylinder sleeve (10) by means of an additive method.

Description

technical field [0001] The invention relates to a production-optimized valve sleeve for an injector for injecting a medium, which valve sleeve is produced partly by means of an additive method, and to an injector having such a valve sleeve And a method of manufacture for the valve sleeve. Background technique [0002] Injectors for injecting media, for example for injecting liquid fuels or for injecting gaseous fuels, are known from the prior art in various designs. Such an injector is known, for example, from DE 10 2013 220 836 A1 and typically comprises a valve sleeve and an injector head which together with further components surround a pressure chamber. A closing element is arranged in the valve sleeve so as to be movable along the longitudinal axis, and cooperates with the closing element seat during the axial movement. The closing element opens and closes one or more injection holes machined into the injector head according to its position, and the fuel is pressed ou...

Claims

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Application Information

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IPC IPC(8): F02M61/18B23P15/00
CPCB23P15/001F02M61/1806F02M61/1886F02M61/168F02M2200/8084F02M61/18
Inventor G·瓦尔特M·法伊格尔F·莫泽H·维勒克M·诺尔普O·舍恩罗克P·吕克
Owner ROBERT BOSCH GMBH
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