Claims:We Claim:
1. A filter (100) for an engine, said filter (100) comprising,
a filter housing (101) having an inlet (101a) and an outlet (101b); said inlet (101a) connected to fuel tank and said outlet (101b) connected to a pump;
characterized in that
a filter element (102) having a plurality of pores (102a, 102b, 102c, 102d), said plurality of pores (102a, 102b, 102c, 102d) allows fuel from said filter housing(101) to pass through said filter element (102);
said filter element (102) having at least one delivery passage (103) located in said outlet (101b) of said filter housing (101), fuel from said filter element (102) flows to said outlet (101b) via said delivery passage (103).
2. The filter (100) as claimed in claim 1, wherein said filter element (102) is sealed from one end.
3. The filter (100) as claimed in claim 1, wherein said filter element (102) is a Nano-filter element.
4. The filter (100) as claimed in claim 1, where in each pore of said plurality of holes (102a, 102b, 102c, 102d) are of size less than 0.02microns.
5. The filter (100)as claimed in claim 1, wherein said plurality of pores (102a, 102b, 102c, 102d) receives said fuel from said filter housing (101) and delivers to said delivery passage (103).
, Description:Complete Specification:
The following specification describes and ascertains the nature of this invention and the manner in which it is to be performed.
Field of the invention
[0001] The invention relates to a filter for an engine.

Background of the invention
[0002] Typically, the fuel is stored in the fuel tank for delivery to an engine combustion chamber through, pump, rail & fuel injector. The filter removes the dust and contaminants from the fuel before it flows to the pump, rail & fuel injector. In all vehicles and the passenger cars, the fuel filters are replaced at regular intervals during servicing.
By Nano-media filter, forming a layer of nanometer scale in the insert of the fuel filter, compared with the other filter having the same filtering area or volume of the filtration performance, there is an advantage capable of increasing the while kept the same life.

[0003] The patent application KR101545167B1 discloses a Nano media filter. The present invention relates to a Nano-media filters, and more particularly, the service life, forming a layer of nanometer scale in the filter for filtering fuel to maintain filtration performance of the filter in the fuel filter to be mounted on the inside of the fuel pump module of a vehicle relates to a Nano-filter media can be increased.

Brief description of the accompanying drawings:
[0004] Different modes of the invention are disclosed in detail in the description and illustrated in the accompanying drawings:
[0005] FIG. 1 illustrates a filter according to an embodiment in the invention; and
[0006] FIG. 2 illustrates a common rail system according to an embodiment in the invention.

Detailed description of the embodiments
[0007] Figure 1 illustrates a filter 100 according to an embodiment of the disclosure. A filter 100 for an engine comprises a filter housing 101 having an inlet 101a and an outlet 101b. The inlet 101a is connected to the fuel tank and the outlet 101b is connected to a pump. The filter 100 comprises a filter element 102 having a plurality of pores (102a, 102b, 102c, 102d). The plurality of pores (102a, 102b, 102c, 102d) allows fuel from the filter housing 101 to pass through the filter element 102. The filter element 102 comprises at least one delivery passage 103 located in the outlet 101b of the filter housing 101 . Fuel from the filter element 102 flows to the outlet 101b of the filter housing 101 via delivery passage 103.

[0008] According to an embodiment of the disclosure, in the filter 100, the filter element 102 is sealed or closed from one end. Commonly the filter element 102 has at least two ends, one end for receiving the fuel and one end for the delivery of the fuel. Here as disclosed in the disclosure, the filter element 102 receives the fuel from the plurality of pores (102a, 102b, 102c, 102d) and delivers the fuel from the delivery passage 103 from one end. Here only one end is needed for the delivery of the fuel so only one end is operational and one end of the filter element 102 is sealed.

[0009] According to an embodiment of the disclosure, in the filter 100, the filter element 102 is a Nano filter element. The Nano filter element restricts the dirt particles outside the filter element and allows fuel to flow through filter element 102. The dirt particles irrespective of any shape and size more than a particular micron are restricted outside the filter element 102 and not allowed to pass through the plurality of pores(102a, 102b, 102c, 102d).

[0010] According to an embodiment of the disclosure, in the filter 100, each pore of the plurality of pores (102a, 102b, 102c, 102d) are of size less than 0.02microns. Since the size of each pore of the plurality of pores (102a, 102b, 102c, 102d) is fixed, therefore all the dirt particles of size more than 0.02 microns are accumulated outside the filter element 102 and not allowed to pass with the fuel through the filter element 102.

[0011] In the above-disclosed disclosure, in the filter 100, the plurality of pores (102a, 102b, 102c, 102d) receives fuel from the filter housing 101 so the fuel passes through the filter element 102 and delivers to the outlet 101b of the housing 101 via delivery passage 103. Here the flow of fuel from fuel tank to the delivery passage 103 can happen both ways. For example, in one case, the contaminated fuel flows from fuel tank and clean fuel enters through filter element 102 and then flows to the delivery passage 103. For example, in another case, the contaminated fuel enter into the filter element 102, clean fuel flows out through the filter element 102 to the delivery passage 103.

[0012]Figure 2 illustrates a system layout of a common rail fuel injection system 200. In the common rail fuel injection system 200, the fuel is sent to filter 100 from the fuel tank 201. From filter 100, the fuel is delivered to the pump 202. In the pump 202, the fuel is pressurized and sent to the common rail 203 and from common rail 203 to the injector 204. Here the filter 100 is a Nano filter, which restricts the flow of dirt or dust particles and only filtered fuel flows to the pump 202. This filter 100 is fitted in the fuel line before the pump 202. For example, the filter 100 is fitted inside the fuel tank 201 in such a way that only filtered fuel flows to the pump 202 restricting the dirt and dust particles inside the fuel tank 201.

[0013] By using this filter element 102 in the common rail fuel injection system 100 as disclosed above, the erosion of the material at the inlet of spray holes can be avoided. The blockage of the spray holes of injector is eliminated by the use of this Nano filter, as the dust particles are trapped at the initial stage only. The robustness of the nozzle, injector components, high pressure pump and high pressure pipe is increased over life time by avoiding the presence of particles in fuel.

[0014] The application of this filter element 102 is not restricted only to the filter 100 in common rail injection system 200, but to every system where fuel needs to be filtered for example an engine.

[0015] ‘Adapted’ or ‘arranged’, in the context of the instant disclosure, refers to the technical capability or the technical capacity of a component, in relation to which the term ‘adapted’ or ‘arranged’ is used, to carry out or executed a specified action or actions, upon the requirement of the specified action or actions to be carried out or executed. Moreover, the usage of the term ‘adapted’ or ‘arranged’ here, is in reference with the normal technical capability or technical capacity of the component, imparted by the design or the structure or the composition of the component, and not in reference with any special or extraneous capability or capacity, beyond the scope of the normal technical capability or technical capacity. Therefore, there is a need to address this problem

[0016] It should be understood that embodiments explained in the description above are only illustrative and do not limit the scope of this invention. Many such embodiments and other modifications and changes in the embodiment explained in the description are envisaged. The scope of the invention is only limited by the scope of the claims.