DESC:TECHNICAL FIELD
[0001] The present disclosure relates generally to an air intake system for an internal combustion engine, and more specifically to a pre-cleaner air filter assembly for the air intake system of the internal combustion engine.
BACKGROUND
[0002] Conventionally, an air intake system of an internal combustion engine comprises a filter system. In such systems, an air filter assembly is employed for eliminating dust and particulate matters from flowing into combustion chamber of the internal combustion engine. Eliminating dust and particulate matters from intake air is absolutely necessary for minimizing abrasion of a cylinder of the internal combustion engine.
[0003] Typically, modern air filter assemblies employ an air pre-cleaner assembly for eliminating the dust and particulate matters partially before the intake air flows into the primary and secondary filters. Such pre-cleaner assemblies become further important in cases where the air-flow requirement is in the high-configuration side. For example, internal combustion engines used in commercial applications require substantial amount of air flow for fulfilling the efficiency and power requirements.
[0004] In such high-configuration applications, normally a pre-cleaner assembly is also required to be designed so as to reduce the resistance to intake air. Prior art pre-cleaner assemblies have tried to design intake sectional areas to reduce this resistance to intake air. Other problems related to resistance to intake air includes accumulation of dust in the pre-cleaner assemblies, eventually increasing the resistance. Other prior art air filter assemblies have used different configurations to ease the replacement of primary or secondary filters for fighting the dust accumulation, leading to reduction in resistance to intake air.
[0005] There are also the cases of resistance to intake air due to warpage or change in shape of hoses provided between intake air ducts and pre-cleaner assemblies. The requirement of compact design with ease of cleaning also affects the normal air flow requirements of such assemblies. Regular removal of dust may ease the resistance to intake air but requires an elaborate design which may defy compact design requirements.
[0006] The present invention deals with the pre-cleaner filter systems having the above-mentioned shortcomings and provides an improved and alternative embodiment ensuring reduced resistance to intake air, ease of dust removal, fulfillment of air-flow needs, and the compact design requirements.
SUMMARY
[0007] Embodiments of the present disclosure describes technological improvements as solutions to one or more of the above-mentioned technical problems recognized by the inventor in conventional systems.
[0008] In an aspect of the present disclosure, a pre-cleaner air filter assembly for an internal combustion engine is provided. The pre-cleaner air filter assembly comprises a twin pre-cleaner design arranged at the top of the pre-cleaner air filter assembly. The twin pre-cleaner design comprises a hood, a first air pre-cleaner, a second air pre-cleaner, a guide cone provided at the top of the twin pre-cleaner design, and a reinforcement ring provided above the guide cone. The hood is generally a rectangular shaped structure converging to an oval or a circular shaped outlet structure and has a first inlet on one of a side of the rectangular structure with angled grids attached on an open end, to have a streamlined incoming air. In an aspect of the present disclosure, the hood has a second inlet on a periphery of the rectangular structure allowing the incoming air to have a side entry into the hood for creating laminar flow by smoothing the flow vortices which generally forms as a function of a single entry air cleaner hoods. In an aspect of the present disclosure, small multiple outlets are given inside the hood near the inlet thus to drain the water separated from incoming air. In an aspect of the present disclosure the first air pre-cleaner and the second air pre-cleaner are cylindrically shaped and arranged in a side by side configuration. In an aspect of the present disclosure, the guide cone is attached at a first attachment point situated on the top of the first air pre-cleaner and at a second attachment point situated on the top of the second air pre-cleaner. The guide cone enables alignment of a foregoing hose being assembled to the twin pre-cleaner design. In an aspect of the present disclosure, the reinforcement ring is provided just above the first attachment point and the second attachment point where the guide cone is attached to the twin pre-cleaner design. The reinforcement ring holds the foregoing hose in regular shape during assembly.
[0009] According to aspects of the present disclosure, the cylindrical shape of the first air pre-cleaner and the second air pre-cleaner extends till near the bottom of the pre-cleaner air filter assembly. The cylindrically shaped first air pre-cleaner and the second air pre-cleaner have an expanded shape near the bottom of the pre-cleaner air filter assembly.
[0010] In an aspect of the present disclosure, the first air pre-cleaner and the second air pre-cleaner are formed integrally together in a side by side configuration for providing a fluid tight arrangement. A first air passage of the first air pre-cleaner and a second air passage of the second air pre-cleaner supply intake air to a following primary or secondary filter arrangement.
[0011] In another aspect of the present disclosure, the guide cone is snap-fitted at the first attachment point and the second attachment point. The guide cone includes a plurality of vertical reinforcements and a plurality of horizontal reinforcements for providing structural rigidity. The guide cone includes an upper guide cone and a lower guide cone formed integrally together. In an aspect, the reinforcement ring may be made of a metal or an alloy.
[0012] In an aspect of the present disclosure, the first air pre-cleaner includes a first inner cylindrical wall joined to a first outer cylindrical wall via a first horizontal wall providing a first dust holding structure. The first inner cylindrical wall is lesser in height than the total height of the first outer cylindrical wall. The first air pre-cleaner includes a first inner air-passage for enabling movement of the filtered air from the first air pre-cleaner to any following filter arrangement.
[0013] In aspects of the present disclosure, a first dust removal port is attached to the bottom of the first dust holding structure for enabling removal of collected dust. The first dust removal port is a cylindrical pipe like structure including a first end attached to the first dust holding structure and a second end facing downwards for enabling removal of the dust. The second end of the first dust removal port is sealed using a first valve vaccua for enabling precise and timely removal of dust.
[0014] In an aspect of the present disclosure, the second air pre-cleaner includes a second inner cylindrical wall joined to a second outer cylindrical wall via a second horizontal wall providing a second dust holding structure. The second inner cylindrical wall is lesser in height than the total height of the second outer cylindrical wall. The second air pre-cleaner includes a second inner air-passage for enabling movement of the filtered air from the second air pre-cleaner to any following filter arrangement.
[0015] In aspects of the present disclosure, a second dust removal port is attached to the bottom of the second dust holding structure for enabling removal of collected dust. The second dust removal port is a cylindrical pipe like structure including a first end attached to the second dust holding structure and a second end facing downwards for enabling removal of the dust. The second end of the second dust removal port is sealed using a second valve vaccua for enabling precise and timely removal of dust.
[0016] In yet another aspect, a pre-cleaner air filter assembly having a twin pre-cleaner design with enhanced laminar flow, adequate dust removal and holding capacity, and with compact design is provided.
[0017] Additional aspects, advantages, features and objects of the present disclosure would be made apparent from the drawings and the detailed description of the illustrative embodiments.
[0018] It will be appreciated that features of the present disclosure are susceptible to being combined in various combinations without departing from the scope of the present disclosure as defined by the below mentioned detailed description and drawings.

BRIEF DESCRIPTION OF THE FIGURES
[0019] The summary above, as well as the following detailed description of illustrative embodiments, is better understood when read in conjunction with the appended drawings. For the purpose of illustrating the present disclosure, example constructions of the disclosure are shown in the drawings. However, the present disclosure is not limited to specific methods and instrumentalities disclosed herein. Moreover, those in the art will understand that the drawings are not to scale. Wherever possible, like elements have been indicated by identical numbers.
[0020] Embodiments of the present disclosure will now be described, by way of example only, with reference to the following diagrams wherein:
Fig. 1 is a perspective view depicting a front perspective view of a pre-cleaner air filter assembly, in accordance with an exemplary embodiment of the present disclosure;
Fig. 2A depicts a front cross-sectional zoom-in view of the pre-cleaner air filter assembly of Fig. 1, in accordance with an exemplary embodiment of the present disclosure;
Fig. 2B depicts a front view of the pre-cleaner air filter assembly of Fig. 1, in accordance with an exemplary embodiment of the present disclosure;
Fig. 3 illustrates a side cross-sectional view of the pre-cleaner air filter assembly of Fig. 1, in accordance with another exemplary embodiment of the present disclosure;
Fig. 4A is a front cross-sectional view of the pre-cleaner air filter assembly of Fig. 1, in accordance with an exemplary embodiment of the present disclosure; and
FIG. 4B is a zoom-in view of the dust removal port of the pre-cleaner air filter assembly of Fig. 4A, in accordance with an exemplary embodiment of the present disclosure.
[0021] In the accompanying drawings, an underlined number is employed to represent an item over which the underlined number is positioned or an item to which the underlined number is adjacent. A non-underlined number relates to an item identified by a line linking the non-underlined number to the item. When a number is non-underlined and accompanied by an associated arrow, the non-underlined number is used to identify a general item at which the arrow is pointing.
DETAILED DESCRIPTION OF EMBODIMENTS
[0022] The following detailed description illustrates embodiments of the present disclosure and manners by which they can be implemented. Although some modes of carrying out the present disclosure has been disclosed, those skilled in the art would recognize that other embodiments for carrying out or practicing the present disclosure are also possible. The person skilled in the art will recognize many variations, alternatives, and modifications of the embodiments of the present disclosure. It should be understood that this invention is not limited to the particular methodology, protocols, and the like, described herein and as such may vary. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the scope of the present invention, which is defined solely by the claims.
[0023] Unless stated otherwise, or implicit from context, the following terms and phrases include the meanings provided below. Unless explicitly stated otherwise, or apparent from context, the terms and phrases below do not exclude the meaning that the term or phrase has acquired in the art to which it pertains. The definitions are provided to aid in describing particular embodiments of the aspects described herein, and are not intended to limit the claimed invention, because the scope of the invention is limited only by the claims. Further, unless otherwise required by context, singular terms shall include pluralities and plural terms shall include the singular.
[0024] As used herein, the term “comprising” or “comprises” is used in reference to compositions, methods, and respective component(s) thereof, that are essential to the invention, yet open to the inclusion of unspecified elements, whether essential or not.
[0025] The singular terms “a”, “an”, and “the” include plural references unless the context clearly indicates otherwise. Similarly, the word “or” is intended to include “and” unless the context clearly indicates otherwise. Thus, for example, references to the “method” includes one or more methods, and/or steps of the type described herein, and/or which will become apparent to those persons skilled in the art upon reading this disclosure and so forth.
[0026] Although methods and materials similar or equivalent to those described herein can be used in the practice or testing of this disclosure, suitable methods and materials are described below. The term “comprises” means “includes”. The abbreviation, “e.g.” is derived from the Latin exempli gratia and is used herein to indicate a non-limiting example. Thus, the abbreviation “e.g.” is synonymous with the term “for example”.
[0027] In an aspect of the present disclosure, a pre-cleaner air filter assembly for an internal combustion engine is provided. The pre-cleaner air filter assembly comprises a twin pre-cleaner design arranged at the top of the pre-cleaner air filter assembly. The twin pre-cleaner design comprises a hood, a first air pre-cleaner, a second air pre-cleaner, a guide cone provided at the top of the twin pre-cleaner design, and a reinforcement ring provided above the guide cone. The hood is generally a rectangular shaped structure converging to an oval or a circular shaped outlet structure and has a first inlet on one of a side of the rectangular structure with angled grids attached on an open end, to have a streamlined incoming air. In an aspect of the present disclosure, the hood has a second inlet on a periphery of the rectangular structure allowing the incoming air to have a side entry into the hood for creating laminar flow by smoothing the flow vortices which generally forms as a function of a single entry air cleaner hoods. In an aspect of the present disclosure, small multiple outlets are given inside the hood near the inlet thus to drain the water separated from incoming air. In an aspect of the present disclosure, the first air pre-cleaner and the second air pre-cleaner are cylindrically shaped and arranged in a side by side configuration. In an aspect of the present disclosure, the guide cone is attached at a first attachment point situated on the top of the first air pre-cleaner and at a second attachment point situated on the top of the second air pre-cleaner. The guide cone enables alignment of a foregoing hose being assembled to the twin pre-cleaner design. In an aspect of the present disclosure, the reinforcement ring is provided just above the first attachment point and the second attachment point where the guide cone is attached to the twin pre-cleaner design. The reinforcement ring holds the foregoing hose in regular shape during assembly.
[0028] According to aspects of the present disclosure, the cylindrical shape of the first air pre-cleaner and the second air pre-cleaner extends till near the bottom of the pre-cleaner air filter assembly. The cylindrically shaped first air pre-cleaner and the second air pre-cleaner have an expanded shape near the bottom of the pre-cleaner air filter assembly.
[0029] In an aspect of the present disclosure, the first air pre-cleaner and the second air pre-cleaner are formed integrally together in a side by side configuration for providing a fluid tight arrangement. A first air passage of the first air pre-cleaner and a second air passage of the second air pre-cleaner supply intake air to a following primary or secondary filter arrangement.
[0030] In another aspect of the present disclosure, the guide cone is snap-fitted at the first attachment point and the second attachment point. The guide cone includes a plurality of vertical reinforcements and a plurality of horizontal reinforcements for providing structural rigidity. The guide cone includes an upper guide cone and a lower guide cone formed integrally together. In an aspect, the reinforcement ring may be made of a metal or an alloy.
[0031] In an aspect of the present disclosure, the first air pre-cleaner includes a first inner cylindrical wall joined to a first outer cylindrical wall via a first horizontal wall providing a first dust holding structure. The first inner cylindrical wall is lesser in height than the total height of the first outer cylindrical wall. The first air pre-cleaner includes a first inner air-passage for enabling movement of the filtered air from the first air pre-cleaner to any following filter arrangement.
[0032] In aspects of the present disclosure, a first dust removal port is attached to the bottom of the first dust holding structure for enabling removal of collected dust. The first dust removal port is a cylindrical pipe like structure including a first end attached to the first dust holding structure and a second end facing downwards for enabling removal of the dust. The second end of the first dust removal port is sealed using a first valve vaccua for enabling precise and timely removal of dust.
[0033] In an aspect of the present disclosure, the second air pre-cleaner includes a second inner cylindrical wall joined to a second outer cylindrical wall via a second horizontal wall providing a second dust holding structure. The second inner cylindrical wall is lesser in height than the total height of the second outer cylindrical wall. The second air pre-cleaner includes a second inner air-passage for enabling movement of the filtered air from the second air pre-cleaner to any following filter arrangement.
[0034] In aspects of the present disclosure, a second dust removal port is attached to the bottom of the second dust holding structure for enabling removal of collected dust. The second dust removal port is a cylindrical pipe like structure including a first end attached to the second dust holding structure and a second end facing downwards for enabling removal of the dust. The second end of the second dust removal port is sealed using a second valve vaccua for enabling precise and timely removal of dust.
[0035] Embodiments of the present disclosure substantially eliminate, or at least partially address, problems in the prior art, and assist the vehicle manufacturers, air filter manufacturers, internal combustion engine manufacturers, consumers, and suppliers.
[0036] Referring now to the drawings, particularly by their reference numbers, Fig. 1 illustrates a pre-cleaner air filter assembly 100 depicted in a front perspective view, in accordance with an embodiment of the present disclosure. The pre-cleaner air filter assembly 100 includes a twin air pre-cleaner design to improve the dust removal efficiency. In embodiments of the present disclosure, the twin air pre-cleaner design includes a first air pre-cleaner 102 and a second air pre-cleaner 104. In embodiments of the present disclosure, the first air pre-cleaner 102 and the second air pre-cleaner 104 are arranged in a side by side configuration.
[0037] As may be seen, the first air pre-cleaner 102 and the second air pre-cleaner 104 are cylindrically shaped at the top 106, according to various embodiments of the present disclosure. Further, the cylindrical shape of the first air pre-cleaner 102 and the second air pre-cleaner 104 extends till near the bottom 108 of the pre-cleaner air filter assembly 100, according to various aspects of the present disclosure. In various embodiments, the cylindrically shaped first air pre-cleaner 102 and the second air pre-cleaner 104 have an expanded shape 110 near the bottom 108 of the pre-cleaner air filter assembly 100.
[0038] The expanded shape 110 near the bottom 108 provides reduced resistance to intake air after it crosses the twin pre-cleaner design, according to various embodiments of the present disclosure. In aspects of the present disclosure, the first air pre-cleaner 102 and the second air pre-cleaner 104 are formed integrally together in a side by side configuration to provide a fluid tight arrangement. This creates a first air passage 112 of the first air pre-cleaner 102 and a second air passage 114 of the second air pre-cleaner 104, in various aspects of the present disclosure. The two separate air passages (first air passage 112, second air passage 114) for supplying intake air to a following primary or secondary filter arrangement (not shown) supports a continuous high flow-rate configuration required for the internal combustion engines requiring air-flow in the high-configuration side.
[0039] Fig. 1 is merely an example. A person skilled in the art will recognize many variations, alternatives, and modifications of the embodiments of the present disclosure.
[0040] Fig. 2A depicts a front cross-sectional zoom-in view of the top 106 of the pre-cleaner air filter assembly 100 depicted in Fig. 1. As illustrated in the view, a guide cone 200 is provided at the top 106 of the pre-cleaner air filter assembly 100. The guide cone 200 enables to align a foregoing hose 202 while assembling to a snorkel (not shown) preceding the foregoing hose 202, according to various aspects of the present disclosure.
[0041] As may be further seen, the guide cone 200 is attached at a first attachment point 204 situated on the top of the first air pre-cleaner 102 and at a second attachment point 206 situated on the top of the second air pre-cleaner 104, as per various embodiments of the present disclosure. In an embodiment, the guide cone 200 is snap-fitted at the first attachment point 204 and the second attachment point 206. In another embodiment, the guide cone 200 is attached at the first attachment point 204 and the second attachment point 206 via a plurality of fasteners (not shown) provided for seamless attachment.
[0042] Again referring to Fig. 2A, the guide cone 200 includes a plurality of vertical reinforcements 208 and a plurality of horizontal reinforcements 210, according to various aspects of the present disclosure. The plurality of vertical reinforcements 208 and the plurality of horizontal reinforcements 210 provide structural rigidity to the guide cone 200 in the long run and avoid any distortion in regular shape of the guide cone 200 due to regular assembly/disassembly during routine maintenance.
[0043] Fig. 2B depicts a front zoom-in view of the pre-cleaner, illustrates the hood 214 having a first inlet 216 on one of a side of the rectangular structure with angled grids 218 attached on the open end, to have a streamlined incoming air. In an aspect of the present disclosure, the hood has a second inlet 220 on a periphery of the rectangular structure.
[0044] Also, Fig. 2A, illustrates small multiple openings given inside the hood near the inlet to drain the water separated from incoming air.
[0045] Further referring to Fig. 2A, a reinforcement ring 212 is provided just above the first attachment point 204 and the second attachment point 206 where the guide cone 200 is attached to the twin air pre-cleaner design. In various aspects of the present disclosure, the reinforcement ring 212 is provided to hold the foregoing hose 202 in its regular shape during assembly, easing the tedious assembly procedure. In an embodiment, the reinforcement ring 212 may be made of metal or alloy to handle any changes in the regular shape of the foregoing hose 202 during assembly.
[0046] Fig. 2A is merely an example. A person skilled in the art will recognize many variations, alternatives, and modifications of the embodiments of the present disclosure.
[0047] Moving on to Fig. 3, a side cross-sectional view of the top 106 of the pre-cleaner air filter assembly 100 of Fig. 1 is depicted. As may be seen, Fig. 3 illustrates another embodiment of arrangements shown in Fig. 2A.
[0048] In this view, the guide cone 200 and the reinforcement ring 216 may be seen for appreciating other design aspects. As illustrated, the guide cone 200 includes an upper guide cone 300 and a lower guide cone 302 formed integrally together to reinforce the structural integrity, according to various aspects of the present disclosure. This view also shows how the plurality of vertical reinforcements 208 and the plurality of horizontal reinforcements 210 interact with the complete structure of the guide cone 200, according to various embodiments of the present disclosure.
[0049] Again referring to Fig. 3, a first attachment member 304 of the foregoing hose 202 is sandwiched between the reinforcement ring 216 and the guide cone 200 at the second attachment point 206 situated at the top 106 of the second air pre-cleaner 104, according to various embodiments of the present disclosure. As may be further seen, a third attachment point 306 situated on the top of the second air pre-cleaner 104 is also visible in this view. According to various aspects of the present disclosure, a second attachment member 308 of the foregoing hose 202 is sandwiched between the reinforcement ring 216 and the guide cone 200 at the third attachment point 306. This sandwiched configuration provides benefit of providing strong attachment of the foregoing hose 202 to the top 106 of the pre-cleaner air filter assembly 100.
[0050] Fig. 3 is merely an example. A person skilled in the art will recognize many variations, alternatives, and modifications of the embodiments of the present disclosure.
[0051] Now moving on to Fig. 4A. a front cross-sectional view of the pre-cleaner air filter assembly 100 having twin air pre-cleaner design is illustrated. The view clearly shows the inner structures of the cylindrically shaped first air pre-cleaner 102 and the second air pre-cleaner 104.
[0052] As may be seen, the first air pre-cleaner 102 includes a first inner cylindrical wall 400 joined to a first outer cylindrical wall 402 via a first horizontal wall 406, according to various embodiments of the present disclosure. This joining provides a first dust holding structure 408 for holding the dust/particulate matters filtered by the first air pre-cleaner 102, in various aspects of the present disclosure. This joining further provides a first inner air-passage 410 for the filtered air from the first air pre-cleaner 102 to move on to any following filter arrangement (not shown), according to various aspects of the present disclosure.
[0053] In an embodiment, the first inner cylindrical wall 400 is lesser in height than the total height of the first outer cylindrical wall 402. In various embodiments, the height of the first inner cylindrical wall 400 may be varied according to the dust holding requirements and so may be the volume of the first dust holding structure 408. As may be further seen, a first dust removal port 412 is attached to the bottom of the first dust holding structure 408 for enabling removal of collected dust/particulate matters, according to various embodiments of the present disclosure.
[0054] Again referring to Fig. 4A, the second air pre-cleaner 104 includes a second inner cylindrical wall 414 joined to a second outer cylindrical wall 416 via a second horizontal wall 418, according to various embodiments of the present disclosure. This joining provides a second dust holding structure 420 for holding the dust/particulate matters filtered by the second air pre-cleaner 104, in various aspects of the present disclosure. This joining further provides a second inner air-passage 422 for the filtered air from the second air pre-cleaner 104 to move on to any following filter arrangement (not shown), according to various aspects of the present disclosure.
[0055] In an embodiment, the second inner cylindrical wall 414 is lesser in height than the total height of the second outer cylindrical wall 416. In various embodiments, the height of the second inner cylindrical wall 414 may be varied according to the dust holding requirements and so may be the volume of the second dust holding structure 420. As may be further seen, a second dust removal port 424 is attached to the bottom of the second dust holding structure 420 for enabling removal of collected dust/particulate matters, according to various embodiments of the present disclosure.
[0056] In various embodiments of the present disclosure, the first dust holding structure 408 and the second dust holding structure 420 are same/similar in shape, size, design, and configuration for enabling a combined laminar flow. In other embodiments of the present disclosure, the first dust removal port 412 and the second dust removal port 424 are same/similar in shape, size, design, and configuration for enabling a smooth dust removal process.
[0057] Moving on to Fig. 4B, a zoom-in view of the first dust removal port 412 of Fig. 4A is illustrated. It must be noted that embodiments shown/described in Fig. 4B are equally applicable to the second dust removal port 424. For sake of brevity, only the first dust removal port 412 is discussed in detail below.
[0058] As may be seen, the first dust removal port 412 is a cylindrical pipe like structure having a first end 426 attached to the first dust holding structure for enabling removal of the dust/particulate matters collected therein, in various aspects of the present disclosure. The first dust removal port 412 also includes a second end 428 facing downwards for enabling removal of the dust/particulate matters, according to various embodiments of the present disclosure.
[0059] Again referring to Fig. 4B, the second end 428 of the first dust removal port 412 is sealed using a first valve vaccua 430 for enabling precise and timely removal of dust/particulate matters, according to various aspects of the present disclosure. In an embodiment, the first valve vaccua 430 may be a manually actuated valve or a solenoid actuated valve or a hydraulically/pneumatically actuated valve based on the requirements or price sensitive nature of the customer.
[0060] Fig. 4A and 4B are merely examples. A person skilled in the art will recognize many variations, alternatives, and modifications of the embodiments of the present disclosure.
[0061] Embodiments of the present disclosure can be used for various purposes, including, though not limited to, manufacturing and servicing of the internal combustion engines.
[0062] Modifications to various embodiments of the present disclosure described in the foregoing are possible without departing from the scope of the present disclosure as defined by the accompanying claims. Expressions such as “including”, “comprising”, “incorporating”. “consisting of”, “have”, “is” used to describe and claim the present disclosure are intended to be construed in a non-exclusive manner, namely allowing for items, components or elements not explicitly described also to be present. Reference to the singular is also to be construed to relate to the plural.
,CLAIMS:What is claimed is:

1. A pre-cleaner air filter assembly for an internal combustion engine, the pre-cleaner air filter assembly comprising:
a twin air pre-cleaner design arranged at the top of the pre-cleaner air filter assembly, the twin air pre-cleaner design comprising:
a first air pre-cleaner; and
a second air pre-cleaner;
a guide cone provided at the top of the twin air pre-cleaner design; and
a reinforcement ring provided above the guide cone;
characterized in that:
the first air pre-cleaner and the second air pre-cleaner are cylindrically shaped and arranged in a side by side configuration;
the guide cone is attached at a first attachment point situated on the top of the first air pre-cleaner and at a second attachment point situated on the top of the second air pre-cleaner, the guide cone enables alignment of a foregoing hose being assembled to the twin air pre-cleaner design; and
the reinforcement ring is provided just above the first attachment point and the second attachment point where the guide cone is attached to the twin air pre-cleaner design, the reinforcement ring holds the foregoing hose in regular shape during assembly.

2. The pre-cleaner air filter assembly of claim 1, wherein the cylindrical shape of the first air pre-cleaner and the second air pre-cleaner extends till near the bottom of the pre-cleaner air filter assembly.

3. The pre-cleaner air filter assembly of claim 2, wherein the cylindrically shaped first air pre-cleaner and the second air pre-cleaner have an expanded shape near the bottom of the pre-cleaner air filter assembly.

4. The pre-cleaner air filter assembly of claim 1, wherein the first air pre-cleaner and the second air pre-cleaner are formed integrally together in a side by side configuration for providing a fluid tight arrangement.

5. The pre-cleaner air filter assembly of claim 1, wherein a first air passage of the first air pre-cleaner and a second air passage of the second air pre-cleaner supply intake air to a following primary or secondary filter arrangement.

6. The pre-cleaner air filter assembly of claim 1, wherein the guide cone is snap-fitted at the first attachment point and the second attachment point.

7. The pre-cleaner air filter assembly of claim 1, wherein the guide cone includes a plurality of vertical reinforcements and a plurality of horizontal reinforcements for providing structural rigidity.

8. The pre-cleaner air filter assembly of claim 1, wherein the guide cone includes an upper guide cone and a lower guide cone formed integrally together.

9. The pre-cleaner air filter assembly of claim 1, wherein the reinforcement ring may be made of a metal or an alloy.

10. The pre-cleaner air filter assembly of claim 1, wherein the first air pre-cleaner includes a first inner cylindrical wall joined to a first outer cylindrical wall via a first horizontal wall providing a first dust holding structure.

11. The pre-cleaner air filter assembly of claim 10, wherein the first inner cylindrical wall is lesser in height than the total height of the first outer cylindrical wall.

12. The pre-cleaner air filter assembly of claim 10, wherein the first air pre-cleaner includes a first inner air-passage for enabling movement of the filtered air from the first air pre-cleaner to any following filter arrangement.

13. The pre-cleaner air filter assembly of claim 10, wherein a first dust removal port is attached to the bottom of the first dust holding structure for enabling removal of collected dust.

14. The pre-cleaner air filter assembly of claim 10, wherein the first dust removal port is a cylindrical pipe like structure including a first end attached to the first dust holding structure and a second end facing downwards for enabling removal of the dust.

15. The pre-cleaner air filter assembly of claim 14, wherein the second end of the first dust removal port is sealed using a first valve vaccua for enabling precise and timely removal of dust.

16. The pre-cleaner air filter assembly of claim 1, wherein the second air pre-cleaner includes a second inner cylindrical wall joined to a second outer cylindrical wall via a second horizontal wall providing a second dust holding structure.

17. The pre-cleaner air filter assembly of claim 16, wherein the second inner cylindrical wall is lesser in height than the total height of the second outer cylindrical wall.

18. The pre-cleaner air filter assembly of claim 1, wherein the second air pre-cleaner includes a second inner air-passage for enabling movement of the filtered air from the second air pre-cleaner to any following filter arrangement.

19. The pre-cleaner air filter assembly of claim 16, wherein a second dust removal port is attached to the bottom of the second dust holding structure for enabling removal of collected dust.

20. The pre-cleaner air filter assembly of claim 16, wherein the second dust removal port is a cylindrical pipe like structure including a first end attached to the second dust holding structure and a second end facing downwards for enabling removal of the dust.

21. The pre-cleaner air filter assembly of claim 20, wherein the second end of the second dust removal port is sealed using a second valve vaccua for enabling precise and timely removal of dust.