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Method for producing injectors and method for pairing at least two injectors

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

Inactive Publication Date: 2018-09-11
CONTINENTAL AUTOMOTIVE GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] 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 producing injectors and method for pairing at least two injectors
  • Method for producing injectors and method for pairing at least two injectors
  • Method for producing injectors and method for pairing at least two injectors

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Embodiment Construction

[0032] 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.

[0033] 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) for a direct injection system of an internal combustion engine, wherein a criterion for the pairing of the at least two injectors (1) is a total leakage (L212) and / or a pressure difference ([Delta]p=p12-p[infinity], [Delta]p=p22-p[infinity]) at a transfer pin (212) of the respective injector (1). The invention further 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 twoinstances of mechanical backlash (110 / 120, 210 / 212, 220 / 222), in particular instances of pairing backlash (110 / 120, 210 / 212, 220 / 222), that are relevant to injection amounts, leakage amounts (L112, L212, L222), and / or pressure differences ([Delta]p=pR-p12 [Almost Equal To] / = [Delta]p=pR-p22) of the injector (1) are paired with each other.

Description

[0001] This application is the original application filed on June 23, 2014, the international application number is PCT / EP2014 / 063129, the Chinese invention title is "method for manufacturing injectors, especially fuel injectors and injectors", Chinese patent A divisional application of the invention patent application with application number 201480036640.6. technical field [0002] 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. Background technique [0003] 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 ...

Claims

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Application Information

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