Claims:
We Claim:
1. A fuel injector (100), comprising at least:
a first nozzle holder body (102), said first nozzle holder body (102) adapted to accommodate a nozzle, said nozzle opens into an engine cylinder combustion chamber; characterized in that:
a nut (106) adapted to mechanically engage said first nozzle holder body (102) with a second nozzle holder body (104), said second nozzle holder body (104) in flow communication with a high pressure pipe.

2. The fuel injector 100 of claim 1, wherein said nut 106 is a locking nut.

3. The fuel injector 100 of claim 1, wherein said first nozzle holder body 102 and said second nozzle holder body 104 comprises a dowel hole and a dowel pin.
, 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 injector.

Background of the invention
[0002]A fuel injector is used for injection of fuel into the engine cylinder for combustion. The fuel injector comprises a nozzle holder assembly that accommodates a nozzle. The nozzle injects fuel into the engine cylinder combustion chamber. In the case of diesel engine, atomization of injected fuel is important for ensuring better combustion in order to meet the emission requirements. One of the techniques used for ensuring better combustion to reduce particle emission is to reduce the dead volume of the injector. However in case where nozzle holder length is greater than, for example, 200 mm, the use of existing manufacturing process for creation of internal diameter presents a challenge due to the dimension of drill bit.

[0003] Prior art patent application US2560799A discloses a fuel injection nozzle assembly comprising a nozzle tip, an internally threaded nut, a formed capsule enclosing said tip and nut for retaining them against separation, a fuel supply bonnet for directing fuel to said tip,- and a threaded portion on said bonnet adapted to be received by said nut.

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 injector.

Detailed description of the embodiments
[0006] FIG. 1 illustrates a fuel injector 100. The fuel injector 100 comprises at least a first nozzle holder body 102. The first nozzle holder body 102 is adapted to accommodate a nozzle that opens into an engine cylinder combustion chamber. A nut 106 is adapted to mechanically engage the first nozzle holder body 102 with a second nozzle holder body 104, the second nozzle holder body is in flow communication with a high pressure pipe. In an embodiment the nut 106 may be a locking nut.

[0007]The construction of the fuel injector 100 will be explained in further detail. The fuel injector 100 disclosed herein is used to inject pressurized fuel into the engine cylinder combustion chamber. The injector comprises a first nozzle holder body 102, the function of the first nozzle holder body 102 is to support the nozzle that is used for injection of fuel into the engine cylinder combustion chamber. The nozzle opens into the engine cylinder combustion chamber. The fuel injector 100 also comprises a second nozzle holder body 104. A nut 106 is adapted to engage the first nozzle holder body 102 with the second nozzle holder body 104. The nozzle holder assembly comprises a second end 104, the second end of the nozzle holder assembly is adapted to accommodate a nut 106. The nut 106 may be locking nut. The nut 106 enables mechanical engagement of the first nozzle holder with the second nozzle holder body. The second nozzle holder body 104 is in flow communication with a high pressure pipe. The function of the second nozzle holder body 104 is to enable fuel to flow from the high pressure pipe and into the nozzle for injection into the engine cylinder.

[0008]The working of the fuel injector 100 will be explained in further detail. Fuel that is required for injection is received by the high pressure pipe through fuel injection pump. The amount of fuel that needs to be injected into the engine cylinder combustion chamber is in dependence of the power that needs be delivered by the engine to the wheels of the vehicle. Fuel flows through the high pressure pipe via the second nozzle holder body 104 and then reaches the nozzle that is located in the first nozzle holder body 102. Fuel is then injected into the engine cylinder combustion chamber.

[0009]By using the above mentioned nut 106, it is now possible to have a fuel injector 100 with multiple nozzle holder bodies. The above mentioned explanation is for a fuel injector 100 with a first nozzle holder body 102 and a second nozzle holder body 104. However in case the length of the nozzle holder is such that there is a need for a third nozzle holder body, then the same can be achieved by using a locking nut 106 to mechanically engage the second nozzle holder body 104 and the third nozzle holder body (not shown).

[0010] ‘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.

[0011]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 injector used. 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.