초록 ▼

A clamping element for a fuel injector is provided that is insertable into a mounting hole of a cylinder head of an internal combustion engine, and that directly injects fuel into a combustion chamber of the internal combustion engine has a first step ring. This at least partially surrounds the fuel

A clamping element for a fuel injector is provided that is insertable into a mounting hole of a cylinder head of an internal combustion engine, and that directly injects fuel into a combustion chamber of the internal combustion engine has a first step ring. This at least partially surrounds the fuel injector and has a valve pressure surface that may rest on the fuel injector. The first step ring has at least one circumferential slope surface on its side facing away from the valve pressure surface, which engages with a corresponding circumferential slope surface of a second step ring, which has a counterpressure surface. The slope surfaces are arranged so that the first step ring and the second step ring are pressed axially apart when they are rotated relatively to one another.

대표청구항 ▼

A clamping element for a fuel injector is provided that is insertable into a mounting hole of a cylinder head of an internal combustion engine, and that directly injects fuel into a combustion chamber of the internal combustion engine has a first step ring. This at least partially surrounds the fuel

A clamping element for a fuel injector is provided that is insertable into a mounting hole of a cylinder head of an internal combustion engine, and that directly injects fuel into a combustion chamber of the internal combustion engine has a first step ring. This at least partially surrounds the fuel injector and has a valve pressure surface that may rest on the fuel injector. The first step ring has at least one circumferential slope surface on its side facing away from the valve pressure surface, which engages with a corresponding circumferential slope surface of a second step ring, which has a counterpressure surface. The slope surfaces are arranged so that the first step ring and the second step ring are pressed axially apart when they are rotated relatively to one another. and in that the intermediate element is constructed as a plane-parallel element and is arranged between the plane surfaces of the cooling-liquid guide housing and of the distributor housing. 3. Internal-combustion engine according to claim 2, characterized in that the mutually corresponding plane surfaces of the cooling-liquid guide housing and of the distributor housing respectively have the same shape and size, in that the mutually assigned first flow cross-sections constructed in the cooling-liquid guide housing and the second flow cross-sections constructed in the distributor housing are arranged in a mutually opposite manner in the mutually corresponding plane surfaces of the cooling-liquid guide housing and of the distributor housing respectively, and in that the intermediate element is constructed as a plane-parallel plate with recesses forming the free passage cross-sections, the recesses, in each case, exposing flow connections between mutually opposite flow cross-sections of the cooling-liquid guide housing and of the distributor housing respectively. 4. Internal-combustion engine according to claim 3, characterized in that the mutually corresponding plane surfaces of the cooling-liquid guide housing and of the distributor housing respectively have a rectangular basic shape which in each case contains the first flow cross-sections constructed in the cooling-liquid guide housing and the second flow cross-sections constructed in the distributor housing. 5. Internal-combustion engine according to claim 4, characterized in that the first flow cross-sections constructed in the liquid guide housing and the second flow cross-sections constructed in the distributor housing each form a matrix-type arrangement of flow cross-sections with a smaller rectangular basic shape or with flow cross-sections composed of rectangular basic shapes. 6. Internal-combustion engine according to claim 5, characterized in that the recesses constructed in the intermediate element, in the sense of influencing the passage cross-section between the first flow cross-sections constructed in the liquid guide housing and the second flow cross-sections constructed in the distributor housing, have the same cross-section as or a smaller cross-sectional than the first and second flow cross-sections respectively. 7. Internal-combustion engine according to claim 6, characterized in that the recesses of the intermediate element have the same shape and size as the first and second flow cross-sections respectively. 8. Internal-combustion engine according to claim 6, characterized in that the recesses of the intermediate element are smaller than the first and second flow cross-sections respectively and have a rectangular or a circular cross-section. 9. Internal-combustion engine according to claim 4, characterized in that the recesses constructed in the intermediate element, in the sense of influencing the passage cross-section between the first flow cross-sections constructed in the liquid guide housing and the second flow cross-sections constructed in the distributor housing, have the same cross-section as or a smaller cross-sectional than the first and second flow cross-sections respectively. 10. Internal-combustion engine according to claim 9, characterized in that the recesses of the intermediate element have the same shape and size as the first and second flow cross-sections respectively. 11. Internal-combustion engine according to claim 9, characterized in that the recesses of the intermediate element are smaller than the first and second flow cross-sections respectively and have a rectangular or a circular cross-section. 12. Internal-combustion engine according to claim 3, 4 or 5, characterized in that the recesses constructed in the intermediate element, in the sense of influencing the passage cross-section between the first flow cross-sections constructed in the liquid guide housing and the second flow cross-sections constructed in the distributor housi