CLIAMS:1. A gas cylinder assembly (31) with a pressure gauge (33) for a vehicle, characterized in that,
a vent hose (36) connected to the gas cylinder assembly (31) for flowing out micro leakage gas outside passenger compartment;
a gas line (49) connected to the gas cylinder assembly (31) and passed through the vent hose (36);
a casing (34) connected to a cylinder valve (32) of the gas cylinder assembly (31), wherein the casing (34) is adapted to mount the pressure gauge (33) to display pressure in the gas cylinder.

2. The gas cylinder assembly (31) as claimed in claim 1 further comprises a clamp (35) for holding the casing (34) on to the gas cylinder assembly (31).

3. The gas cylinder assembly (31) as claimed in claim 1, wherein the casing (34) is made of rubber material.

4. The gas cylinder assembly (31) as claimed in claim 1, wherein the cylinder valve (32) is configured with venting path (46) for venting out micro leakages in the gas cylinder assembly (31).

5. A method of assembling a gas cylinder assembly (31) comprising acts of:
mounting a vent hose (36) onto the gas cylinder assembly (31) to flow out micro leakage gas outside passenger compartment;
connecting a gas line (49) to the gas cylinder assembly (31) which passes through the corrugated vent hose (36);
connecting a casing (34) to a cylinder valve (32) of the gas cylinder assembly (31); and
mounting the pressure gauge (33) to the casing for displaying pressure of the gas in the gas cylinder.

6. The method as claimed in claim 5, wherein a clamp (35) is provided in the cylindrical valve (32) for holding the casing (34) onto the gas cylinder assembly (31).

7. A system (48) comprising a gas cylinder assembly (31) as claimed in claim 1, the system (48) comprising:
a vacuum assembly (43) comprising an intake manifold (45) and a rail (44) connected to the intake manifold (45);
a pressure regulator (41) connected to the vacuum assembly (43) through an assembly pressure line (42);
a pressure filter (39) connected to the pressure regulator (41) through an assembly gas line (42); and
a gas receptacle (27) along with a receptacle cap (28) configured in between the gas cylinder assembly (31) and the pressure filter (39).
,TagSPECI:TECHNICAL FIELD
The present disclosure relates to a gas cylinder assembly, more particularly relates pressure gauge mounting in the gas cylinder assembly.

BACKGROUND OF THE DISCLOSURE AND PRIOR ARTS
Existing gas cylinder assembly includes high pressure gas pipes comprising a pressure gauge for measuring pressure of the gas. One way of mounting the pressure gauge is that the pressure gauge is mounted at engine compartment or near fuel filling area in automobiles such as cars or commercial vehicles. The limitations associated with the existing mounting of the pressure gauge are that, the gas cylinder assembly would require more number of joints. As the system comprises more number of joints, the possibility of leakage is more.

Fig. 1 represents a common layout which is in use currently (may differ based on specific applications) CNG (or similar fueled) system 25. The system 25 shows a pressure gauge 16 at a distance and connected using a T-connector. The system 25 is provided with a gas cylinder assembly 5 without any pressure gauge 16 mounted at vicinity of the gas cylinder assembly 5. The system 25 consists of an intake manifold 22 and a gas rail 21 connected to the intake manifold 22. An assembly high pressure regulator 18 is connected to the assembly low pressure line 19. Low pressure is the pressure after pressure reduction by the pressure regulator (pressure regulator outlet pressure). The assembly of the intake manifold 22, the gas rail 21, the assembly low pressure line 19 and the assembly vacuum line 20 are connected to the assembly high pressure regulator l8. The assembly high pressure regulator 18 is further connected to a high pressure filter 10 through an assembly gas high pressure line 11 and as assembly of T-connector 12 (shown in Fig. 2) and the pressure gauge 16. The high pressure regulator 18 is connected to the T-connector 12 using an assembly gas high pressure line 17. The pressure gauge 16 is usually connected to the T-connector 12 using a ¼” male connector 15, a tube 14 and a nut 13. A gas receptacle 1 along with a receptacle cap 2 configured in between the gas cylinder assembly 5 and the filter 10. A gas cylinder assembly 5 is provided in the system 25 between the high pressure filter 10 and a gas receptacle 1. The gas cylinder assembly 5 comprises a cylinder valve 6 of the gas cylinder assembly 5. A vent hose 7 and 26 is connected to the gas cylinder assembly 5 for flowing out micro leakage gas outside passenger compartment (not shown) of the vehicle. In one embodiment the vent hose is a corrugated vent hose. A high pressure gas line underbody joint 4 is connected to the gas cylinder assembly 5 and passed through the corrugated vent hose 7. High pressure values depend based on the application. For example in CNG the high pressure is around 200 bars. A tubing 26 is provided to the cylinder of the gas cylinder assembly for passing or venting out the micro leakage gas and further a vent duct 8 is connected to other end of the tubing 7 and 26. The vent duct 8 is further connected to floor 9 of the vehicle (not shown). The micro leakage gas flows to outside the passenger compartment through tubing 7 and 26 and illustrated as venting path 23. An assembly gas high pressure line 4 for the gas cylinder assembly 5 is provided between the gas cylinder assembly 5 and the assembly gas high pressure line 3 provided for the receptacle 1. An assembly gas high pressure line 3 is provided between the gas receptacle 1 and underbody joint. The joint(s) are provided on the underbody at suitable locations to facilitate the easy assembly of tubes because handling a long tube can be difficult.

The disadvantages associated with the existing system is that the existing system 25 comprising the pressure gauge 16 mounted with connectors requires, many joints in the system 25 for connecting the T-connector 12. Also, the system 25 requires many tubing for connectivity within the pressure lines. Further, as the pressure gauge is connected using connectors such as T-connector 12 and also number of tubings, maintenance for servicing the system is a difficult due to more number of components within the system. Since the system involves more number of components, the existing system is not economical and the set-up cost is more.

In view of the above limitation, there is a need to develop a new mounting arrangement for pressure gauge mounting which reduces possibility of leakages and reduce cost of the system.

OBJECTS OF THE DISCLOSURE
One object of the present disclosure is to provide a gas cylinder assembly with an integrated solution for pressure gauge mounting for a vehicle.

Another object of the present disclosure is to provide a cost effective, easy to service, easy to assemble and safer system.

SUMMARY OF THE DISCLOSURE
The shortcomings of the prior art are overcome and additional advantages are provided through the present disclosure. Additional features and advantages are realized through the techniques of the present disclosure. Other embodiments and aspects of the disclosure are described in detail herein and are considered a part of the claimed disclosure.

In one embodiment, the present invention provides for a gas cylinder assembly with a pressure gauge for a vehicle, characterized in that a vent hose connected to the gas cylinder assembly for flowing out micro leakage gas outside passenger compartment; a gas line connected to the gas cylinder assembly and is passed through the corrugated vent hose; a casing connected to a cylinder valve of the gas cylinder assembly, wherein the casing is adapted to mount the pressure gauge to measure pressure in the gas cylinder.

In one embodiment of the present disclosure, comprises a clamp for holding the casing on to the gas cylinder assembly.

In one embodiment of the present disclosure, the casing is made of rubber material.

In one embodiment, the cylinder valve is configured with venting path for venting out micro leakages in the gas cylinder assembly.

In one embodiment, the present disclosure provides for a method of assembling a gas cylinder assembly. The method comprising acts of mounting a vent hose onto the gas cylinder assembly to flow out micro leakage gas outside passenger compartment; connecting a gas line to the gas cylinder assembly which passes through the corrugated vent hose; connecting a casing to a cylinder valve of the gas cylinder assembly; and mounting the pressure gauge to the casing for measuring pressure of the gas in the gas cylinder.

In one embodiment, a clamp is provided in the layout for holding the casing on to the gas cylinder assembly.

In one embodiment, a system comprises a gas cylinder assembly. The system comprising a vacuum assembly comprising an intake manifold and a rail connected to the intake manifold; a pressure regulator connected to the vacuum assembly through an assembly pressure line; a pressure filter connected to the pressure regulator through an assembly gas line; and a gas receptacle along with a receptacle cap configured in between the gas cylinder assembly and the pressure filter.

The foregoing summary is illustrative only and is not intended to be in any way limiting. In addition to the illustrative aspects, embodiments, and features described above, further aspects, embodiments, and features will become apparent by reference to the drawings and the following detailed description.

BRIEF DESCRIPTION OF THE ACCOMPANYING DRAWINGS
The novel features and characteristic of the disclosure are set forth in the appended claims. The disclosure itself, however, as well as a preferred mode of use, further objectives and advantages thereof, will best be understood by reference to the following detailed description of an illustrative embodiment when read in conjunction with the accompanying figures. One or more embodiments are now described, by way of example only, with reference to the accompanying figures wherein like reference numerals represent like elements and in which:

Fig. 1 shows a system comprising a pressure gauge mounted either in engine compartment or near a filling unit of an automobile according to the prior art.

Fig. 2 shows a magnified view of T-connector for mounting pressure gauge in the system according to the prior art.

Fig. 3 shows a system comprising a pressure gauge mounted at a cylinder valve of the gas cylinder assembly according to the present disclosure.

Fig. 4 shows a magnified view of the pressure gauge mounted at the cylinder valve of the gas cylinder assembly according to the present disclosure.

FIG. 5 shows a sectional view of CNG/Gas cylindrical assembly according to the present disclosure.

FIG. 6 shows a sectional view of CNG/Gas cylindrical valve according to the present disclosure.

FIG. 7 shows side sectional view of the CNG/Gas cylinder assembly connected with the CNG/Gas cylinder valve according to the present disclosure.
.
The figures depict embodiments of the disclosure for purposes of illustration only. One skilled in the art will readily 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 OF THE DISCLOSURE
The foregoing has broadly outlined the features and technical advantages of the present disclosure in order that the detailed description of the disclosure that follows may be better understood. Additional features and advantages of the disclosure will be described hereinafter which form the subject of the claims of the disclosure. It should be appreciated by those skilled in the art that the conception and specific embodiment disclosed may be readily utilized as a basis for modifying or designing other structures for carrying out the same purposes of the present disclosure. It should also be realized by those skilled in the art that such equivalent constructions do not depart from the spirit and scope of the disclosure as set forth in the appended claims. The novel features which are believed to be characteristic of the disclosure, both as to its organization and method of operation, together with further objects and advantages will be better understood from the following description when considered in connection with the accompanying figures. It is to be expressly understood, however, that each of the figures is provided for the purpose of illustration and description only and is not intended as a definition of the limits of the present disclosure.

It is to be noted at this point that all of the above described components, whether alone or in any combination, are claimed as being essential to the disclosure, in particular the details depicted in the drawings and reference numerals in the drawings are as given below.

Table of referral numerals

Referral Numerals Description
1 CNG/Gas Receptacle according to prior art
2 Receptacle cap according to the prior art
3 CNG/Gas High Pressure line receptacle assembly to underbody joint according to the prior art
4 CNG/Gas High Pressure line underbody joint assembly to cylinder according to the prior art
5 CNG/Gas Cylinder assembly according to the prior art
6 CNG/Gas Cylinder valve according to the prior art
7 and 26 Corrugated vent hose according to the prior art
8 Vent duct according to the prior art
9 Floor according to the prior art
10 High Pressure Filter according to the prior art
11 CNG/Gas High Pressure line and High Pressure filter assembly to T-connector according to the prior art
12 T-connector according to the prior art
13 Nut according to the prior art
14 Tube according to the prior art
15 ¼ “ male connector according to the prior art
16 Pressure Gauge assembly according to the prior art
17 CNG/Gas High Pressure line with T-connector assembly to high pressure regulator according to the prior art
18 High pressure regulator assembly according to the prior art
19 Low pressure line assembly according to the prior art
20 Vacuum line assembly from intake manifold to pressure regulator according to the prior art
21 CNG/Gas rail according to the prior art
22 Intake manifold according to the prior art
23 Venting Path for venting micro leakages to underbody according to the prior art
24 CNG/Gas filling inlet port on receptacle according to the prior art
25 System of gas cylinder assembly comprising a pressure gauge according to the prior art.
27 CNG/Gas Receptacle according to the present disclosure
28 Receptacle cap according to the present disclosure
29 CNG/Gas High Pressure line receptacle assembly to underbody joint according to the present disclosure
30 CNG/Gas High Pressure line underbody joint assembly to cylinder according to the present disclosure
31 CNG/Gas Cylinder assembly according to the present disclosure
32 CNG/Gas Cylinder valve according to the present disclosure
33 Pressure Gauge according to the present disclosure
34 Rubber Casing according to the present disclosure
35 Clamp to hold the Rubber Casing according to the present disclosure
36 Corrugated Vent Hose according to the present disclosure
37 Vent Duct according to the present disclosure
38 Floor according to the present disclosure
39 High Pressure Filter according to the present disclosure
40 CNG/Gas high pressure line with high pressure filter assembly to high pressure regulator according to the present disclosure
41 High pressure regulator assembly according to the present disclosure
42 Low pressure line assembly according to the present disclosure
43 Vacuum line assembly from intake manifold to pressure regulator according to the present disclosure
44 CNG/Gas rail according to the present disclosure
45 Intake manifold according to the present disclosure
46 Venting path for venting micro leakages to underbody according to the present disclosure
47 CNG/Gas filling inlet port on receptacle according to the present disclosure
48 System comprising a gas cylinder assembly and a pressure according to the present disclosure
49 High pressure tube according to the present disclosure
50 Micro leakage venting hole on the cylindrical valve according to the present disclosure
51 Manual Valve according to the present disclosure
52 Electronic Valve according to the present disclosure
53 Temperature release device according to the present disclosure
54 Pressure release device according to the present disclosure
55 Main venting orifice of the valve
56 Blow Off Device (BOD) on pressure gauge
57 Excess flow valve

The present disclosure relates to a gas cylinder assembly comprising a pressure gauge which is directly mounted at a cylinder valve of the gas cylinder assembly. The mounting of the pressure gauge directly at the cylinder valve eliminates usage of extra fittings, additional tubes and connectors. Thus, due to usage of less number of components, leakage of the gas within the system is also reduced.

FIG. 3 illustrates a system 48 comprising a pressure gauge 33 mounted at a CNG/Gas cylinder valve 32 of the CNG/Gas cylinder assembly 31 according to an embodiment of the present disclosure. The system 48 is provided with the CNG/Gas cylinder assembly 31. The system 31 consists of a vacuum line assembly 43 comprising an intake manifold 45 and a gas rail 44 connected to the intake manifold 45. A high pressure regulator assembly 41 is connected to the vacuum line assembly 43 through a low pressure line 42. The intake manifold 45, the CNG/Gas rail 44, the low pressure line assembly 42 and the vacuum line assembly 43 are configured as a low pressure system in the system 48. The intake manifold 45, the gas rail 44, the low pressure line assembly 42 and the vacuum line assembly 43 are connected to the high pressure regulator assembly 41. The high pressure regulator assembly 41 is further connected to a high pressure filter 39 through a CNG/Gas high pressure line assembly 40. A CNG/Gas receptacle 27 along with a receptacle cap 28 configured in between the CNG/Gas cylinder assembly 31 and the pressure filter 39 through a CNG/Gas filling inlet port on receptacle 47. A CNG/Gas High Pressure line receptacle assembly 29 to underbody joint is provided with the receptacle 27. A CNG/Gas cylinder assembly 31 is provided in the system 48 between the high pressure filter 39 and the CNG/Gas receptacle 27. A CNG/Gas high pressure line assembly 49 for the CNG/Gas cylinder assembly 31 is provided between the CNG/Gas cylinder assembly 31 and the gas high pressure filter assembly 39

FIG. 4 shows a magnified view of the gas cylinder assembly 31 (Detail ‘B’ indicated in the Fig. 3) according to an embodiment of the present disclosure. The gas cylinder assembly 31 comprises the pressure gauge 33 mounted at the CNG/Gas cylinder valve 32 of the gas cylinder assembly 31. A vent hose is connected to the CNG/Gas cylinder assembly 31 for flowing out micro leakage gas outside passenger compartment (not shown) of the vehicle. In one embodiment the vent hose is a corrugated vent hose 36. A CNG/Gas high pressure gas line underbody joint assembly 30 is connected to the CNG/Gas cylinder assembly 31 and passed through the corrugated vent hose 36 (shown in Fig. 3). A high pressure tube 49 is connected to the Gas high pressure line underbody joint assembly 30 (Fig. 3). A vent duct 37 is connected to one of the corrugated vent hose 36 and further connected to floor 38 of the vehicle (not shown). A casing 34 is provided in the CNG/Gas cylinder valve 32 of the gas cylinder assembly 31 and is adapted to mount the pressure gauge 33 to measure pressure in the CNG/Gas cylinder of the CNG/Gas cylinder assembly 31. The casing 34 and the corrugated vent hose 36 are arranged substantially coaxial to each other and the CNG/Gas cylinder valve 32 is positioned substantially perpendicular to the pressure gauge 33 or the corrugated vent hose 36. In one embodiment, the casing 34 is made of rubber material. A clamp 35 is provided in the CNG/Gas cylinder assembly 31 for holding the casing 34 on to the CNG/Gas cylinder assembly 31. In one non-limiting embodiment, the gas described in the disclosure is not limiting to CNG and HCNG.

For venting of micro-leakages to outside passenger compartment (not shown) of the vehicle (not shown), a rubber casing 34 is mounted on the cylinder valve 32 and the pressure gauge 33 with suitable hose clamp/clips. The system 48 comprising the pressure gauge 33 at the cylindrical valve 32 is meeting the requirement of venting of micro leakages to atmosphere. The micro leakage gas flows to outside the passenger compartment through a vent hose 36 and illustrated as venting path 46.

FIG. 5 shows a sectional view of CNG/Gas cylindrical assembly 31. The pressure gauge 33 is fixed onto the cylindrical valve 32 through a rubber casing 34. The cylindrical valve 32 is configured with micro leakage venting hole 50 for venting micro leakage. The micro leakage venting hole 50 is extended through a venting path 46 through venting orifice 55 which in turn vents out the micro leakage to underbody of the vehicle. In case of actuation of BOD 56 on pressure gauge, venting of gas also will go through venting path 46. (BOD is the safety arrangement on pressure gauge in case of failure of gauge all gas should come out of BOD to avoid breakage of glass).

The CNG/Gas cylinder valve 32 is a safety cum filling/feeding and control device consisting but not limited to multiple valves like Manual Valve 51 (Shown in FIG. 4), Electronic valve (solenoid) 52 (Shown in FIG. 4), Pressure release device 54 (Shown in FIG. 4), Temperature release device 53 (Shown in FIG. 4), Excess Flow Valve 57 (Shown in FIG. 7). All these valves may have some internal micro leakage. In order that no gas to be vented into the vehicle cabin, internal channels are machined in the cylindrical valve to direct these leakage into the corrugated vent hose 36 which is fixed on the CNG/Gas cylinder valve 32 and takes them away from the cabin into the outside atmosphere.

FIG. 6 shows a sectional view of CNG/Gas cylindrical valve 32. The CNG/Gas cylinder valve 32 is connected with a corrugated vent hose 36 and is configures with a manual valve 51, micro leakage venting valve hole 50, and main venting orifice 55.

Generally both sides of the CNG/Gas cylinder valve 32 are vented into the atmosphere. As the pressure gauge 33 is directly fixed on one side of the CNG/Gas cylinder valve 32, where generally vent hose is connected. So it is important to make sure that no micro leakage is vented into the passenger cabin. Hence, a rubber casing/cover is designed which seals the pressure gauge body and the CNG/Gas cylinder valve 32 and doesn’t allow micro-leakage into the cabin. Any micro leakage if ever if it happens, will be taken out from the passenger cabin to the outside through the vent hose fitted on the other side of the CNG/Gas cylinder valve 32.

FIG. 7 shows side sectional view of the CNG/Gas cylinder assembly 31 connected with the CNG/Gas cylinder valve 32.

Advantages
In one embodiment, the system disclosed in the disclosure includes reduced number of joints thereby reducing possibility of leakage in the system and increased safety.

In one embodiment, the system disclosed in the disclosure is economical as compared to the existing system since, there is a reduction in cost due to lesser joints and lesser requirement of tubings.

In one embodiment, the system disclosed in the disclosure reduces assembly tact time due to reduced number of parts in the system.

In one embodiment of the disclosure, the pressure gauge in the system is easy for serviceability due to lesser parts and better accessibility.

In one embodiment of the disclosure, the mounting of the pressure gauge at the cylindrical valve improves visibility to customer and service personnel and thereby increasing safety.

Equivalents
With respect to the use of substantially any plural and/or singular terms herein, those having skill in the art can translate from the plural to the singular and/or from the singular to the plural as is appropriate to the context and/or application. The various singular/plural permutations may be expressly set forth herein for sake of clarity.

It will be understood by those within the art that, in general, terms used herein, and especially in the appended claims (e.g., bodies of the appended claims) are generally intended as “open” terms (e.g., the term “including” should be interpreted as “including but not limited to,” the term “having” should be interpreted as “having at least,” the term “includes” should be interpreted as “includes but is not limited to,” etc.). It will be further understood by those within the art that if a specific number of an introduced claim recitation is intended, such an intent will be explicitly recited in the claim, and in the absence of such recitation no such intent is present. For example, as an aid to understanding, the following appended claims may contain usage of the introductory phrases “at least one” and “one or more” to introduce claim recitations. However, the use of such phrases should not be construed to imply that the introduction of a claim recitation by the indefinite articles “a” or “an” limits any particular claim containing such introduced claim recitation to inventions containing only one such recitation, even when the same claim includes the introductory phrases “one or more” or “at least one” and indefinite articles such as “a” or “an” (e.g., “a” and/or “an” should typically be interpreted to mean “at least one” or “one or more”); the same holds true for the use of definite articles used to introduce claim recitations. In addition, even if a specific number of an introduced claim recitation is explicitly recited, those skilled in the art will recognize that such recitation should typically be interpreted to mean at least the recited number (e.g., the bare recitation of “two recitations,” without other modifiers, typically means at least two recitations, or two or more recitations). Furthermore, in those instances where a convention analogous to “at least one of A, B, and C, etc.” is used, in general such a construction is intended in the sense one having skill in the art would understand the convention (e.g., “a system having at least one of A, B, and C” would include but not be limited to systems that have A alone, B alone, C alone, A and B together, A and C together, B and C together, and/or A, B, and C together, etc.). In those instances where a convention analogous to “at least one of A, B, or C, etc.” is used, in general such a construction is intended in the sense one having skill in the art would understand the convention (e.g., “a system having at least one of A, B, or C” would include but not be limited to systems that have A alone, B alone, C alone, A and B together, A and C together, B and C together, and/or A, B, and C together, etc.). It will be further understood by those within the art that virtually any disjunctive word and/or phrase presenting two or more alternative terms, whether in the description, claims, or drawings, should be understood to contemplate the possibilities of including one of the terms, either of the terms, or both terms. For example, the phrase “A or B” will be understood to include the possibilities of “A” or “B” or “A and B.”

While various aspects and embodiments have been disclosed herein, other aspects and embodiments will be apparent to those skilled in the art. The various aspects and embodiments disclosed herein are for purposes of illustration and are not intended to be limiting, with the true scope and spirit being indicated by the following claims.