Arrangement for a fuel injection system with a fuel injection valve and a decoupling element

Abstract

A decoupling element (3) serves to decouple a fuel injection valve (2) from a cylinder head. The decoupling element (3) has a main body (6) which serves to enclose a housing (5) of the fuel injection valve (2) in the assembled state. Here, a cylinder-side support region (7) which serves for supporting on the cylinder head (4) is formed on the main body (6). Furthermore, a valve-side supporting region (8) which serves for supporting the fuel injection valve (2) is formed on the main body (6). When the fuel injection valve (2) is supported between the valve-side supporting region (8) and the cylinder-side support region (7), the main body (6) is subjected to a compressive load. Here, only the cylinder-side support region (7) of the main body (6) is configured in the form of a closed ring, whereas the main body (6) has segments (15-18) which are distributed over a circumference and are connected to one another by the closed ring (20) of the cylinder-side support region (7). Here, the decoupling element (3) makes it possible to reduce the transmission of sound from the fuel injection valve (2) to the cylinder head (4). Furthermore, an arrangement (1) with a decoupling element (3) of this type and a fuel injection valve (2) is described.

Description

technical field [0001] The invention relates to a decoupling element for decoupling a fuel injection valve from a cylinder head and an arrangement having a fuel injection valve and the decoupling element. The invention relates in particular to the field of fuel injection systems for internal combustion engines, in which fuel under high pressure is injected into associated combustion chambers of the internal combustion engine via fuel injection valves. Background technique [0002] A compensating element for a fuel injection valve is known from DE 103 38 715 A1. In this case, the compensating element serves to mount the fuel injection valve in the cylinder head of the internal combustion engine. The compensating element is annular and is arranged between the valve housing of the fuel injector and the wall of the receiving bore of the cylinder head. The compensating element has arms which are supported on the fuel injection valve and the cylinder head. In this case, the fir...

AI Technical Summary

Problems solved by technology

[0005] The decoupling element known from DE 10 2008 054 591 A1 has the disadvantage that the decoupling element is configured as a disk spring and is tensioned in the assembled state

Therefore, the problem arises over the service life of ensuring sufficient structural strength and at the same time ensuring the desired noise reduction

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