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Fuel injection system for use in motor vehicle, has screen filter arranged in fuel discharge and/or in fuel supply of fuel high pressure storage

A technology of fuel injection system and high-pressure fuel, which is applied to fuel injection devices, charging systems, liquid fuel feeders, etc., and can solve problems such as increasing installation costs

Inactive Publication Date: 2009-06-10
CONTINENTAL AUTOMOTIVE GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the measures mentioned on the one hand significantly increase the installation costs and on the other hand require relatively high technical outlay in terms of software optimization, it is necessary to find a solution to overcome the above-mentioned problems in a simpler manner

Method used

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  • Fuel injection system for use in motor vehicle, has screen filter arranged in fuel discharge and/or in fuel supply of fuel high pressure storage
  • Fuel injection system for use in motor vehicle, has screen filter arranged in fuel discharge and/or in fuel supply of fuel high pressure storage

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Embodiment Construction

[0013] Identical or functionally identical components are identified below with the same reference numerals.

[0014] FIG. 1 shows a simplified version of a high-pressure fuel accumulator 1 . The high-pressure fuel accumulator 1 is an elongated hollow body. The high-pressure fuel accumulator 1 has a fuel inlet 2 . The fuel inlet is operatively connected to a high-pressure fuel pump (likewise not shown) via an inlet line (not further shown). The high-pressure fuel pump compresses the fuel and feeds the fuel into the high-pressure fuel accumulator 1 . The pressure in the high-pressure fuel accumulator 1 is regulated by means of a pressure regulating valve 6 . In addition, the high-pressure fuel accumulator 1 has a plurality of (4 in total in this embodiment) fuel outlets 3.1, 3.2, 3.3 and 3.4. Each fuel outlet is connected to the corresponding fuel injector via a fuel line, also not shown. A first slot filter 4 is arranged in the fuel inlet 2 . The slot filter 4 prevents c...

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Abstract

The invention relates to a fuel injection system, comprising a high-pressure fuel reservoir (1) with at least one fuel feed (2) and at least one fuel discharge (3.1; 3.2; 3.3 and 3.4), wherein the fuel feed (2) interacts with a high-pressure fuel pump and the fuel discharge (3.1; 3.2; 10 3.3 and 3.4) interacts with a fuel injection valve. Arranged in the fuel discharge (3.1; 3.2; 3.3 and 3.4) and / or fuel feed (2) of the high-pressure fuel reservoir is a gap filter (4) which is configured geometrically in such a way that it achieves a predetermined throttle effect. The use of the gap filter (4) in the fuel discharge (3.1; 3.2; 3.3 and 3.4) and / or in the fuel feed (2) prevents dirt particles from being able to get into the injector and cause malfunctions there. Furthermore, presure vibrations which are induced in the system as a result of the injection process or as a result of the high-pressure fuel pump are damped by the throttle effect of the gap filter (4).

Description

technical field [0001] The invention relates to a fuel injection system comprising a high-pressure fuel accumulator with at least one fuel inlet and at least one fuel outlet, wherein the fuel inlet is operatively connected to a high-pressure fuel pump, and the fuel outlet is connected to a fuel injection valve role connection. Background technique [0002] Such fuel injection systems are also known as common rail systems and are currently widely used in vehicles with diesel engines. In this case, the high pressure fuel pump compresses the diesel from the current pressure to a pressure of 1800 Bar. Due to the high pressure, mechanically very stringent demands are placed on the high-pressure pump. Due to the mechanical stress of the high-pressure fuel pump, in particular in the region of the piston, mechanical wear debris (contaminant particles) can be generated, which can pass through the fuel line, the high-pressure fuel accumulator to the fuel injection valve. Although s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02M37/00F02M37/22F02M55/02F02M63/02F02M61/16
CPCF02M55/025F02M61/165F02M63/0225Y10T137/794
Inventor W·巴赫豪瑟A·艾因伯格C·克莱斯G·韦格尔
Owner CONTINENTAL AUTOMOTIVE GMBH