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Fuel injection valves for combustion engines

A technology for fuel injection valves and combustion engines, applied in fuel injection devices, special fuel injection devices, engine components, etc., can solve problems such as performance degradation in the combustion process, avoid coking and deposit formation, reduce pollutant emissions or The effect of particle emissions

Inactive Publication Date: 2018-07-13
CONTINENTAL AUTOMOTIVE GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Performance degradation of the combustion process occurs during the life of the engine due to coking of the fuel injection valves

Method used

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  • Fuel injection valves for combustion engines
  • Fuel injection valves for combustion engines
  • Fuel injection valves for combustion engines

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0040] figure 1 An exemplary embodiment of an injection valve 1 with a nozzle assembly 3 and an actuator 5 is shown. The actuator 5 functionally interacts with the set of nozzle assemblies 3 .

[0041] The nozzle assembly 3 includes a valve body 6 . Injection valve 1 also includes an injector body 9 . The valve body 6 is fixedly connected to the injector body 9 , for example by means of a nozzle cap nut 11 . Other connection means like press-fit and / or welded connections are also conceivable for the fixed connection of the injector body 9 to the valve body 6 . Valve body 6 and injector body 9 form a common housing of injection valve 1 for hydraulically connecting a fuel outlet port 31 of injection valve 1 to a fuel inlet port 32 of injection valve 1 .

[0042] The valve body 6 has a base body 7 comprising a valve chamber 13 with a central longitudinal axis 15 and a wall 17 . Inside the valve chamber 13 , a valve needle 19 is arranged, which is included in the nozzle assem...

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PUM

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Abstract

A fuel injection valve (1) for a combustion engine comprises a valve body (7). The valve body (7) includes a valve cavity (13) and a nozzle body (24). The nozzle body (24) limits the free volume of the valve cavity (13) and includes at least one nozzle hole (25). The nozzle body (24) comprises a surface (33) facing the combustion chamber of the combustion engine and surrounding the at least one nozzle hole (25). The surface ( 33 ) comprises a first region ( 37 ) which completely laterally surrounds the nozzle hole ( 25 ) and is fluid-repellent. The surface (33) includes a second region (39) adjacent to the first region (37), which laterally surrounds the first region (37) and is less hydrophobic than the first region (37) or is Fluid.

Description

technical field [0001] The invention relates to a fuel injection valve for a combustion engine, wherein the injection valve comprises a valve body comprising a valve cavity and a nozzle body. Background technique [0002] Fuel injection valves are widely used in, inter alia, internal combustion engines, where they may be arranged for metering fluid into an intake manifold of the internal combustion engine or directly into the combustion chambers of cylinders of the internal combustion engine. [0003] Due to increasingly stringent legal regulations regarding the permissible pollutant emissions of internal combustion engines arranged, for example, in vehicles, it is necessary to take various measures in order to reduce these pollutant emissions. [0004] One possible starting point is the reduction of pollutant emissions directly produced by combustion engines. For example, soot production is highly dependent on the fuel mixture preparation in the individual cylinders of the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F02M61/18F02M61/16
CPCF02M61/166F02M61/1853F02M2200/06F02M2200/9038
Inventor F.伦兹M.格兰迪S.菲利皮
Owner CONTINENTAL AUTOMOTIVE GMBH
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