Claims:We Claim:
1. A fuel injection pump (100), said fuel injection pump (100) comprising at least a housing (102); a plunger (104) located within said housing (102) and a sealing ring (106) surrounding said plunger (104); characterized in that:
said sealing ring (106) adapted to accommodate an oil-absorbing material (108).

2. The fuel injection pump of claim 1, wherein said oil absorbing material (108) is activated charcoal.

3. The fuel injection pump 100 of claim 1, wherein said sealing ring 106 comprises lips 112 (110).
, 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]This invention relates to the field of fuel injection pump.

Background of the invention
[0002] In the case of oil lubricated fuel injection pump, lubrication of parts of the fuel injection pump happens due to circulation of oil to various parts of the fuel injection pump. There is a chance of mixing of oil with fuel due to pressure difference – Fluid flow due to pressure difference and due to drag effect that is during the upward movement of plunger 104 the lubricating oil dragged and this oil mixes with fuel in the pressurizing chamber leading to diesel blackening.

[0003] Prior art patent application KR200137235Y discloses a design is the piston of the reciprocating pump crank (plunger) lubricating oil supply structure, and more particularly, relates to a nebulizer or piston reciprocating piston pump and the cylinder cover at the time of as much as possible to reduce the contact friction caused in the packing cover to the oil cylinder for the coupling to the wool or officer for laying a wick in the Baltic to the wool which absorbs the oil in the oil even slightly out time by the lubrication oil piston and acts to smooth forcibly close packing of harmful gap can be prevented from being leaked. In other words, the nebulizer or axial piston pump and the cylinder cover injection pipe to form a screw groove is threaded coupling or coupling or officer to the inside of the embedded grooves formed in the wick by Yang, captain of the piston one able to lubricate the crankshaft (not shown) piston reciprocating pump plunger) lubricating oil supply structure.

Brief description of the accompanying drawing
[0004] Different modes of the invention are disclosed in detail in the description and illustrated in the accompanying drawing:

[0005] FIG. 1 illustrates fuel injection pump.

Detailed description of the embodiments
[0006] FIG. 1 illustrates fuel injection pump 100. The fuel injection pump 100, comprises at least a housing 102; a plunger 104 located within the housing 102 and a sealing ring 106 surrounding the plunger 104. The sealing ring 106 is adapted to accommodate an oil-absorbing material 108. The oil absorbing material may be activated charcoal. The oil absorbing material prevents mixing of oil and fuel. The seal ring comprises lips 112, the dimension of the oil-absorbing material 108 is less than the dimension of lips 112, in order to prevent any damage.

[0007]The working of the fuel injection pump 100 will be explained in further detail. The fuel injection pump 100 is an oil lubricated fuel injection pump 100. Fuel from the fuel tank (not shown) enters the fuel injection pump 100 through the inlet. The fuel injection pump 100 comprises a plunger 104, the reciprocating movement of the plunger 104 pressurizes the fuel. The components of the fuel injection pump 100 also need lubrication, in order to achieve the same oil from an oil sump flows along with the plunger 104 and is directed to the components of the fuel injection pump 100. The plunger 104 comprises sealing ring 106, as the oil comes into contact with the sealing ring 106, the oil absorbing material that is present in the sealing ring 106 absorbs the oil and prevents movement of oil towards the pressurizing chamber. The oil absorbing material may be activated charcoal.

[0008]With the use of activated charcoal the mixing of oil and fuel is avoided, thereby preventing diesel blackening.

[0009]It should be understood that embodiments explained in the description above are only illustrative and do not limit the scope of this invention in terms of the type of fuel injection pump. 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.