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Method for manufacturing injector and injector

A technology of injectors and injection volume, which is applied in fuel injection devices, carburetors, machines/engines, etc., and can solve problems such as the adverse effects of harmful substance emissions and internal combustion engine consumption

Inactive Publication Date: 2019-07-05
CONTINENTAL AUTOMOTIVE GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Deviations of the actual injection quantity of the fuel injector from the setpoint injection quantity always have a negative effect on combustion, ie the resulting emissions of pollutants, and often also on the consumption of the internal combustion engine

Method used

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  • Method for manufacturing injector and injector
  • Method for manufacturing injector and injector
  • Method for manufacturing injector and injector

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Experimental program
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Embodiment Construction

[0033] The invention will be explained in more detail below with the aid of a piezoelectrically operated common rail diesel injector 1 for a motor vehicle internal combustion engine (cf. figure 1 ). However, the invention is not restricted to such diesel injectors 1 , but can also be applied, for example, to gasoline injectors or pump-nozzle fuel injectors with single-part or multi-part nozzle needles, and for gasoline injectors Said typical reference numerals can be learned from the list of reference numerals. Therefore, only the injector 1 will be mentioned below. The fluid that can be injected may be fuel, but of course other fluids—for example water, oil or any other desired process fluids—can be injected by means of the injector according to the invention. This means that the injector according to the invention is not limited to the automotive industry.

[0034] figure 1 The injector 1 is shown substantially in cross-section, wherein the injector 1 comprises a nozzle ...

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PUM

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Abstract

The invention relates to a method for pairing at least two injectors (1), in particular two fuel injectors (1) of a direct injection system for an internal combustion engine, wherein the at least two injectors The criterion for matching injectors (1) is the total leakage (L 212 ) and / or differential pressure (Δp=p 12 ‑p ∞ , Δp=p 22 ‑p ∞ ). Furthermore, the invention relates to a method for producing an injector (1), in particular a fuel injector (1) for a direct injection system of an internal combustion engine, wherein at least two Amount (L 112 , L 212 , L 222 ) and / or differential pressure (Δp=p R ‑p 12 ≈ / =Δp=p R ‑p 22 ) The important mechanical clearances (110 / 120, 210 / 212, 220 / 222), especially the fitting clearances (110 / 120, 210 / 212, 220 / 222) cooperate with each other.

Description

technical field [0001] The invention relates to a method for producing a plurality of injectors, in particular a plurality of fuel injectors for direct injection systems of motor vehicles. Furthermore, the invention relates to a method for pairing at least two injectors and a method for producing the injectors. Furthermore, the invention relates to an injector, in particular a fuel injector for a direct injection system of an internal combustion engine. Background technique [0002] The increasingly stringent legal regulations regarding the permissible pollutant emissions of internal combustion engines for motor vehicles make it necessary to achieve improved mixture handling in the cylinders of the internal combustion engine by means of fuel injectors. - In today's fuel injectors, the control of the fuel injection takes place by means of a nozzle needle, which is movably mounted in the fuel injector and releases or closes the fuel injector in relation to its stroke The ope...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F02M1/16
CPCF02M61/168F02M51/0607F02M61/12F02M61/18
Inventor W.许尔茨R.埃特伦德W.赖姆
Owner CONTINENTAL AUTOMOTIVE GMBH