Fuel injection arrangement

#1. Field of the Invention

#The invention relates to a fuel injection arrangement for the cylinder of an internal combustion engine, with a fuel injector mounted on the cylinder head of the cylinder.

#2. Background Art

#For a complete understanding of the present invention and the advantages thereof, reference is now made to the following description taken in conjunction with the accompanying drawings in which like reference numerals indicate like features and wherein:

#FIG. 1 shows diagrammatically an exemplary cylinder head of an internal combustion engine with an exploded view of the fuel injectors used therein;

#FIG. 2 shows a side view of a fuel injector according to FIG. 1; and

#FIG. 1 shows a side view of an internal combustion engine. In the illustration, the fuel injectors are removed from the associated bores in the cylinder head 4, one fuel injector 1 being illustrated representatively in an exploded view, in order to illustrate its type of fastening in said bores.

#FIG. 2 illustrates the fuel injector 1 in more detail in an enlarged side view. It can be seen here that the fuel injector 1 is constructed essentially cylindrically with a longitudinal axis L. The fuel injector 1 is inserted into the bores of the cylinder head 4 in the direction of this longitudinal axis L. After the widened middle portion 6 of the fuel injector 1 comes into abutment on the edge of the bore in the cylinder head, said fuel injector is fastened to the cylinder head with the aid of the stopper 3. The stopper 3 has a central perforation and sits with the edges of this perforation on the upper end face of the fuel injector 1, in order to subject the latter to an axial force (that is to say, a force in the direction of the longitudinal axis L, see the arrow in FIG. 2).

#Whereas, in the prior art, the fuel injector sits directly with the end faces of the widened middle portion 6 on corresponding contact faces at the edge of the bore in the cylinder head, according to the invention a damping element in the form of a multiple shim 5 or alternatively 5a is arranged between said contact faces on the fuel injector 1, on the one hand, and on the cylinder head 4, on the other hand. Such a shim can be manufactured very easily and mounted on the fuel injector 1.