Filter

p0001The invention relates to a filter having an inlet and an outlet.

p0002Such filters are known, for example as a fuel in internal combustion engine-powered vehicles of all kinds. Also known are mounted between filter and engine pressure regulator in Edelstahlausfuhrung that limit the pressure in the fuel line. This known arrangement of filters and pressure regulating valve is once parts consuming, on the other hand, the cost of several parts have a detrimental effect on the overall cost situation.

p0003One could examine the individual elements as well as the manufacturing processes at the cost saving potential. But this is again time consuming, the cost situation is not necessarily improved, on the other hand you still have several units.

p0004It is therefore an object of the invention to improve a filter of the aforementioned kind such that an easy to install, applicable and inexpensive multipurpose module is created.

p0005This object is achieved in that a pressure regulator is integrated in the filter housing. This as a whole and thus reduces the number of parts the costs. By creating only a portion of the handling during assembly and disassembly is greatly improved.

p0006An advantageous development of the invention provides that the pressure regulator is disposed downstream of a return. This return passes back the the pressure regulator at high line pressures resulting amount of fuel in the tank.

p0007Furthermore, one can advantageously provide that the pressure regulator is located on the clean side or rohseitig.

p0008An advantageous development provides that the reset mechanism of plastic and / or metal. Furthermore, one can advantageously provide that the filter housing made of plastic and / or metal. The path to a more plastic to the one has a weight on the other hand, a cost advantage. Furthermore, the requirements are lower on the recycling systems, the more uniform the proportion of material components.

p0009An advantageous development provides that the filter element end caps made of metal and / or paper and / or cardboard having. More uniform are the ingredients of the overall filter, the more advantageous is the material even working up to the operating life of the filter.

p0010More vorteilhaf te developments emerge from the dependent claims.<dl id="dl0001"><dt>figure 1</dt><dd>Longitudinal section through a fuel filter with a plastic housing and the clean side disposed pressure regulator,</dd><dt>figure 2</dt><dd>Longitudinal section through a fuel filter with metal case without collar, </dd><dt>figure 3</dt><dd>Longitudinal section through a fuel filter with metal housing and support tube,</dd><dt>figure 4</dt><dd>Longitudinal section through a fuel filter with rohseitiger pressure regulator assembly.</dd></dl>

p0011The fuel filter consists of a housing 1 with an inlet 2 and an outlet 3. In the filter housing, a pressure regulator 4 is integrated. The pressure regulator 4 acts at high pressures as a bypass and passes via liquid fuel quantities over a return 5 back into the tank.

p00121 shows a filter is shown with housing 1 made of plastic, in which the pressure regulator 4 is arranged on the clean side. Inside the housing is a filter insert 6, which consists of a star-shaped folded paper. The end caps 7 of the filter insert made of metal or metal-free in the plastic version of the filter housing. 1 In Figure 1, a support tube 8 is integrated to increase the stability thereof in the filter insert.

p0013Figure 2 shows a variant with metal housing, wherein the pressure regulator 4 is mounted on the clean side, the filter insert is designed to be self-supporting.

p0014In figure 4 a variant is shown in which the pressure regulator is mounted rohseitig.