Claims:We Claim:
1. A fuel distributor block (100), said fuel distributor block (100) located upstream to an engine (102), and comprising at least:
a central casing (104) adapted to receive fuel from a fuel injection pump (106);
at least a first flow path (108); and
at least a second flow path (105) ; characterized in that
said first flow path (108) and said second flow path (105) extend radially from said central casing 104 and are co-planar.
2. The fuel distributor block (100) of claim 1, wherein said fuel distributor block (100) further comprises a third flow path (112).
3. The fuel distributor block (100) of claim 1, said fuel distributor block further comprises at least a third flow path (112) and a fourth flow path (110).
4. The fuel distributor block (100) of claim 1 and 3, wherein said third flow path 112 and said fourth flow path 110 extend axially with respect to the central casing 104 and are perpendicular with respect to said first flow path 108 and said second flow path 105.

5. The fuel distributor block (100) of claim 1 and 2, wherein said third flow path (112) extends radially from said central casing (104) and is co-planar with respect to said first flow path (108) and said second flow path (110).

6. The fuel distributor block (100) of claim 1 and 3, wherein said first flow path (108), said second flow path (110) and said third flow path (112) is a connector.

7. The fuel distributor block of claim 1 and 2, wherein said third flow path (112) accommodates at least one of a pressure control valve, a pressure relief valve and a screw plug.

8. The fuel distributor block of claim 4, wherein said first flow path (108), said second flow path (110), and said third flow path (112) are integrated with said central casing (104).
, Description:Field of the invention
[0001] This invention relates to the field fuel distributor block in fuel injection system.

Background of the invention
[0002] Currently for the fuel injection of diesel cars, the high pressure fuel supply devices are common rail and Fuel distributor block (FDB). The common rail is used in most of the vehicles whereas the fuel distributor block is used in lower capacity vehicles. The common rail length is high and as the length increases the complexity in manufacturing of rail increases, which in turn has the effect on the costs. In case of 'V' engines there are two rails mounted which could result in variations of pressure waves between the two rails. The fuel distributor block has the limitation that it can be used on up to two cylinders and it can house only rail pressure sensor (RPS). Other components such as Pressure control valve (PCV), Pressure limiting valve (PLV) or Screw Plug cannot be assembled on to the fuel distributor block. Hence, there is a need to overcome the shortcomings of fuel distributor block in order to increase its efficiency.

[0003] Prior art patent application 1086/CHE/2015 fuel distributor block, comprising a first recess located at one end of the fuel distributor block 100 and accommodating a pressure sensor. The fuel distributor block is characterized in having a second recess in flow communication with the first recess through a first bore. The second recess is in flow communication with at least a third recess through a second bore extending from the second recess and the third recess, the second recess and the third recess provided with internal threads and adapted to receive external connectors.

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 a fuel distributor block; and

[0006] FIG. 2 illustrates a top view of the fuel distributor block.

Detailed description of the embodiments
[0007] FIG. 1 illustrates a fuel distributor block 100. The fuel distributor block 100 is located upstream to an engine 102 and comprises at least a central casing 104 adapted to receive fuel from a fuel injection pump 106 and at least a first flow path 108 and at least a second flow path 110. The fuel distributor block 100 is characterized in that the first flow path 108 and the second flow path 105 extend radially with respect to the central casing 104 and are co-planar. The fuel distributor block 100 further comprises a third flow path 112 and a fourth flow path 110. The third flow path 112 and fourth flow path 110 extend axially with respect to the central casing 104 and is perpendicular with respect to the first flow path 108 and the second flow path 110 105. The first flow path 108, the second flow path 105, and the third flow path 112 and the fourth flow path 110 may be a connector. The third flow path 112 accommodates at least one of a pressure control valve, a pressure relief valve and a screw plug. The fourth flow path 110 accommodates pressure sensor.

[0008] The construction of the fuel distributor block 100 will now be explained in further detail. The fuel distributor block 100 comprises a central casing 104. The central casing 104 is also called as a boss. The profile of the boss is such that the flow paths (108, and 105) are oriented radially and the flow paths (110 & 112) are oriented axially with respect to the boss/ central casing 104. The flow paths (108, 105, 110 & 112) may be in the form of a connector. At least one connector is adapted to accommodate a high pressure pipe to receive fuel from a fuel injection pump 106.

[0009] FIG. 2 illustrates a top view of the fuel distributor block. The first flow path 108 and the second flow path 105 extend radially with respect to said central casing 104 and are co-planar. The third flow path 112 and the fourth flow path 110 (not shown) extend axially with respect to the central casing 104 and are perpendicular with respect to said first flow path 108 and said second flow path 105. The third flow path 112 and said fourth flow path 110 (not shown) can be interchanged without affecting the functionality of the fuel distributor block. Also the first flow path 105 and the second flow path 108 may also be interchanged depending upon the requirements.

[0010] The working of the fuel distributor block 100 will be explained further with respect to FIG. 1. The fuel distributor block 100 is located upstream to an engine 102 and supplies pressurized fuel received from the fuel injection pump 106 into the engine cylinder. The fuel enters the central casing 104 through the first flow path 108. The central casing 104 of the fuel distributor block 100 stores the fuel. The second flow path 105 is used to deliver the fuel from the central casing 104 into the engine 102 cylinder. The third flow path 112 extends axially with respect to the central casing 104. Consider the embodiment where the third flow path 112 accommodates a pressure control valve. The function of the pressure control valve is to control the pressure fluctuations in the fuel distributor block 100, and hence maintain stability in the fuel distributor block 100. Whenever the pressure of the fuel in the fuel distributor block 100 exceeds a preset pressure, then the pressure control valve opens a return line for the fuel to flow into the fuel tank. The return line comprises a flow pipe that is connected to at least one flow path in the fuel distributor block 100. Alternately, instead of a pressure control valve a pressure limiting valve may also be used to achieve the above mentioned objective of maintaining stability in the fuel distributor block 100. A screw plug is used to close any unused flow path.

[0011] The advantages with the proposed fuel distributor block 100 is that the all the connectors are in one plane hence the position of the connectors does not change axially, thereby the dimension of the fuel distributor block 100 can be optimized and a compact fuel supply device can be made. The connectors are arranged radially, hence the two axial ends can be used for mounting the components as pressure control valve, pressure limiting valve and screw plug based on the system requirements. Also since the central casing/ boss 104 where the connectors extend has more width it can house more number of connectors which makes it flexible to be used for more than two cylinder application. It also has an advantage for the 'V' Engines, where one fuel distributor block 100 when placed in the middle of the engine 102 could cater to both the side of the cylinders thereby a uniform pressure wave behavior is achieved.

[0012] 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 design of number of connectors used in the fuel distributor block. 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.