[0001] The present disclosure, in general, relates to arrangement of common fuel gas injector rail with air intake manifold and, more particularly, to connection providing means between the common fuel has injector rail and the air intake manifold in Common Natural Gas (CNG) operated vehicles.
BACKGROUND
[0002] Background description includes information that may be useful in understanding the present invention. It is not an admission that any of the information provided herein is prior art or relevant to the presently claimed invention, or that any publication specifically or implicitly referenced is prior art.
[0003] CNG operated vehicles has gas cylinder and a deliver system to deliver CNG into internal combustion engine. Generally, CNG fuel is mixed with air in air intake manifold near connection the internal combustion engine connection. The air intake manifold has fuel inlet ports to receive the CNG fuel and mixes the fuel with the fresh air and deliver the mixture of fuel and air to the internal combustion engine.
[0004] Front Loaded Engine Vehicle are prone for fuel leakage during Crash test as fuel lines are spread at the front. To assure the crash durability, it is important to layout the Fuel system accordingly. Conventionally, CNG Fuel Rail is mounted on air intake manifold and connected to Intake port by CNG Rubber Hoses due to small distance between rail and Port. In the designs where CNG rail is mounted on cylinder head cover which is away from the intake manilfold, long hoses are required to connect the CNG rail with the air intake manifold. In the existing layout, metal brazed pipe are used in between the CNG rail and the air

intake manifold but these metal pipes might break during crash and CNG leakage may happen.
[0005] To solve the above-mentioned technical problem, the common fuel gas injector rail is provided on cylinder head as shown in the figure 1. In the crash situation, the common fuel gas injector rail remains in contact with the cylinder head. However, the metal pipes that connect the common fuel gas injector rail with the air intake manifold receives impact force and got dis-connected with the inlet or outlet port. Due to disconnection, the CNG fuel leaked from the metal pipes.
[0006] In another conventional arrangement, a metal pipe is provided in between two hoses where one hose is connected to outlet of the common fuel gas injector rail and other hose connected with the air intake manifold. The conventional arrangement includes multiple connections that increase chances of disconnection and leakage during crash.
[0007] Technical problem can be formulated as leakage of CNG fuel from the metal pipes during crash situation.
[0008] Therefore, there is a need in the art to provide a technical solution that can avoid leakage of CNG fuel during crash situation.
OBJECTS OF THE DISCLOSURE
[0009] Some of the objects of the present disclosure, which at least one embodiment herein satisfy, are listed hereinbelow.
[0010] The principal object of the present invention is to provide a common fuel gas injector rail arrangement for coupling a common fuel gas injector rail with an air intake manifold for injecting compressed natural gas (CNG).
[0011] Another object of the present invention is to provide a plurality of hoses in between the common fuel gas injector rail and the air intake manifold.

[0012] Another object of the present invention is to provide a hose holder on cylinder head to capture movement of the plurality of hoses during vehicle running condition.
[0013] These and other objects and advantages will become more apparent when reference is made to the following description and accompanying drawings.
SUMMARY
[0014] This summary is provided to introduce concepts related to a common fuel gas injector rail arrangement for coupling a common fuel gas injector rail with an air intake manifold for injecting natural gas. The concepts are further described below in the detailed description. This summary is not intended to identify key features or essential features of the claimed subject matter, nor is it intended to be used to limit the scope of the claimed subject matter.
[0015] In an embodiment, the present disclosure relates to a common fuel gas injector rail arrangement for coupling a common fuel gas injector rail with an air intake manifold for injecting compressed natural gas. The common fuel gas injector rail has a fuel inlet and a plurality of fuel outlet. The air intake manifold has a plurality of air inlet having fuel injector ports. The arrangement further includes a plurality of hoses that connects the plurality of fuel outlet of the common fuel gas injector rail with the plurality of air inlets of the air intake manifold.
[0016] In an aspect, the common fuel gas injector rail is mounted on cylinder head cover.
[0017] In an aspect, a bracket is mounted on cylinder head cover. The bracket has a hose holder having a plurality of holding portions to hold movement of the plurality of hoses.

[0018] Various objects, features, aspects, and advantages of the inventive subject matter will become more apparent from the following detailed description of preferred embodiments, along with the accompanying drawing figures in which like numerals represent like components.
BRIEF DESCRIPTION OF THE DRAWINGS
[0019] The illustrated embodiments of the subject matter will be best understood by reference to the drawings, wherein like parts are designated by like numerals throughout. The following description is intended only by way of example, and simply illustrates certain selected embodiments of devices, systems, and methods that are consistent with the subject matter as claimed herein, wherein:
[0020] Fig. 1 illustrates conventional arrangement;
[0021] Fig. 2 illustrates present arrangement, in accordance with an embodiment of the present disclosure; and
[0022] Fig. 3 illustrates structure hose holder as shown in Fig. 1, in accordance with an embodiment of the present disclosure.
[0023] The figures depict embodiments of the present subject matter for the purposes of illustration only. A person skilled in the art will easily recognize from the following description that alternative embodiments of the structures and methods illustrated herein may be employed without departing from the principles of the disclosure described herein
DETAILED DESCRIPTION
[0024] The detailed description of various exemplary embodiments of the disclosure is described herein with reference to the accompanying drawings. It should be noted that the embodiments are described herein in such details as to clearly communicate the disclosure. However, the amount of details provided

herein is not intended to limit the anticipated variations of embodiments; on the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the scope of the present disclosure as defined by the appended claims.
[0025] It is also to be understood that various arrangements may be devised that, although not explicitly described or shown herein, embody the principles of the present disclosure. Moreover, all statements herein reciting principles, aspects, and embodiments of the present disclosure, as well as specific examples, are intended to encompass equivalents thereof.
[0026] The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments. As used herein, the singular forms “a",” “an” and “the” are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the tennis “comprises,” “comprising,” “includes” and/or “including,” when used herein, specify the presence of stated features, integers, steps, operations, elements and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components and/or groups thereof.
[0027] It should also be noted that in some alternative implementations, the functions/acts noted may occur out of the order noted in the figures. For example, two figures shown in succession may, in fact, be executed concurrently or may sometimes be executed in the reverse order, depending upon the functionality/acts involved.
[0028] Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which example embodiments belong. It will be further understood that terms, e.g., those defined in commonly used dictionaries, should
6

be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
[0029] These and other advantages of the present subject matter would be described in greater detail with reference to the following figures. It should be noted that the description merely illustrates the principles of the present subject matter. It will thus be appreciated that those skilled in the art will be able to devise various arrangements that, although not explicitly described herein, embody the principles of the present subject matter and are included within its scope.
[0030] FIGS. 1 illustrates a common fuel gas injector rail arrangement 100 for coupling a common fuel gas injector rail 102 with an air intake manifold 104 for injecting natural gas into the air intake manifold 104. The common fuel gas injector rail arrangement 100 includes the common fuel gas injector rail 102, the air intake manifold 104, a plurality of hoses 103, and a hose holder 106. The common fuel gas injector rail 102 has one fuel inlet 102a and a plurality of fuel outlet 102b, 102c, 102d.
[0031] The air intake manifold 104 is conventionally well known to a person skilled in the art. Further, connection the air intake manifold and internal combustion engine is known along with its structure. Therefore, to avoid ambiguity in the present invention, detail description of the air intake manifold and its connection with the internal combustion engine is not described. The air intake manifold 104 has a plurality of air inlet 104a, 104b, 104c. Number of air inlets depends on number of cylinders in the internal combustion engine. Further, each of the plurality of air inlets 104a, 104b, 104c has fuel injector port 104aa, 104bb, 104cc to receive fuel, such as CNG fuel. The CNG fuel or gas fuel is injected into the air intake manifold 104 as the gas fuel mixes with intake air properly.
7

[0032] Further, a plurality of hoses 103a, 103b, 103c is provided in between the common fuel gas injector rail 102 and the air intake manifold 104. The plurality of hoses 103a, 103b, 103c connects the plurality of fuel outlets 102b, 102c, 102d (can be referred as outlet port) of the common fuel gas injector rail 102 with the plurality of air inlets 104a, 104b, 104c of the air intake manifold 104 to inject natural gas. The plurality of hoses 103a, 103b, 103c is connected the plurality of fuel injector ports 104aa, 104bb, 104cc to of the air intake manifold
104 to receive natural gas fuel. As number of hoses depends on number of air
inlets on the air intake manifold 104.
[0033] In an aspect of the present subject matter, the common fuel gas injector rail 102 is mounted on the cylinder head cover 101. In another embodiment, the common fuel gas injector rail 102 may be mounted on dash panel of the vehicle.
[0034] As shown in the figure 2 and 3, the arrangement 100 includes a bracket
105 that is mounted on the cylinder head cover 101. The bracket 105 may be
made of metal. The bracket 105 has a hose holder 106 to hold movement of the
plurality of hoses in the arrangement. The hose holder 106 includes a plurality of
holding portions 106a, 106b, 106c to hold the plurality of hoses 103a, 103b, 103c.
In the arrangement, number of holding portions is equal to number of hoses. The
hose holder 106 may be snap fitted on the bracket 105. The hose holder 106 may
be made of plastic material or metal material. The holding portions may have
cushion material to hold movement of the hoses.
[0035] In an aspect, the plurality of hoses 103a, 103b, 103c is made of Rubber Hoses. Further, material that can be used for manufacturing of rubber hoses are ECO, NBR etc..
[0036] As shown in the figure 1, the plurality of hoses 103a, 103b, 103c are coupled with the plurality of fuel outlet 102b, 102c, 102d of the common fuel gas injector rail 102 by a plurality of clamps 102x, 102y, 102z. The plurality of hoses
8

103a, 103b, 103c are coupled with the plurality of fuel injector ports 104aa, 104bb, 104cc of the air intake manifold 104 by a plurality of clamps 104x, 104y, KHz.
[0037] While the foregoing describes various embodiments of the invention, other and further embodiments of the invention may be devised without departing from the basic scope thereof. The scope of the invention is determined by the claims that follow. The invention is not limited to the described embodiments, versions or examples, which are included to enable a person having ordinary skill in the art to make and use the invention when combined with information and knowledge available to the person having ordinary skill in the art.

We claim:

A common fuel gas injector rail arrangement (100) for coupling a common fuel gas injector rail (102) with an air intake manifold (104) for injecting natural gas, the common fuel gas injector rail arrangement (100) comprising:
the common fuel gas injector rail (102) having a single fuel inlet (102a) and a plurality of fuel outlet (102b, 102c, 102d);
the air intake manifold (104) having a plurality of air inlet (104a, 104b, 104c), each of the plurality of air inlets (104a, 104b, 104c) has fuel injector port (104aa, 104bb, 104cc);
characterized in that
a plurality of hoses (103a, 103b, 103c) connects the plurality of fuel outlet (102b, 102c, 102d) of the common fuel gas injector rail (102) with the plurality of air inlets (104a, 104b, 104c) of the air intake manifold (104).
The arrangement (100) as claimed in claim 1, wherein the common fuel gas injector rail (102) mounted on cylinder head cover (101).
The arrangement (100) as claimed in claim 1, wherein a bracket (105) mounted on cylinder head cover bracket (105) mounted on the cylinder head cover (101), the bracket (105) has a hose holder (106) having a plurality of holding portions (106a, 106b, 106c) to hold the plurality of hoses (103a, 103b, 103c).
The arrangement (100) as claimed in claim 4, wherein the hose holder (106) is snap fitted with the bracket (105).
The arrangement (100) as claimed in claim 4, wherein the hose holder (106) is made of plastic material.

The arrangement (100) as claimed in claim 1, wherein each of the plurality of hoses (103a, 103b, 103c) is made of rubber.
The arrangement (100) as claimed in claim 1, wherein the plurality of hoses (103a, 103b, 103c) are coupled with the plurality of fuel outlet (102b, 102c, 102d) of the common fuel gas injector rail (102) by a plurality of clamps (102x, 102y, 102z).
The arrangement (100) as claimed in claim 1, wherein the plurality of hoses (103a, 103b, 103c) are coupled with the plurality of air inlets (104a, 104b, 104c) of the air intake manifold (104) by a plurality of clamps (104x, 104y, 104z).