Abstract: A fuel injection system has a high-pressure fuel reservoir with at least one fuel feed and at least one fuel discharge, wherein the fuel feed interacts with a high-pressure fuel pump and the fuel discharge interacts with a fuel injection valve. Arranged in the fuel discharge and/or fuel feed of the high-pressure fuel reservoir is a gap filter which is configured geometrically in such a way that it achieves a predetermined throttle effect. The use of the gap filter in the fuel discharge and/or in the fuel feed prevents dirt particles from being able to get into the injector and cause malfunctions there. Furthermore, pressure 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.

Abstract: The invention relates to a method for producing a high pressure fuel accumulator (1) for a fuel injection system of an internal combustion engine, comprising a tubular base body (2), at least one connection for the fuel supply (3) and at least one connection for the fuel discharge, and at least one fixing element, said tubular base body (2) being embodied as a single component with the connections (3, 4) and the fixing element. The hollow profile of the tubular base body is extruded with the connector strips (5, 6) and the fixing strips (7).

Abstract: A filter element for filtering fuel, in particular diesel fuel, in a motor vehicle comprises a by-pass (14, 26) with a sealing element (15, 21, 24), which opens on a given pressure difference between a region (19) before the filter element and a region (20) after the filter element being achieved.

Abstract: A connecting element (1) connects a piston (2) with a restoring element (6) for a radial piston pump. The piston (2) is displaceably mounted in a cylinder (4) and can be restored from an upper dead-centre position by means of the restoring element (6). The connecting element (1) is connected to the piston (2) in a positive fit.