Claims:We claim:
1. A heat shield (200) to protect an engine mount (101) of an engine, said engine mount being positionable between an engine arm (102) and a body side bracket (103), wherein the body side bracket is mounted on a rubber side bracket at the centre, and wherein the engine arm is welded to the rubber mount, the heat shield (200) comprising:
a top member (201), a connection end of which is secured on a top surface of the engine arm (102);
side members (202), (203) extending along corresponding side edges of the top member (201) and secured from their connection ends on side surfaces of the engine arm (102),
wherein width of the top member (201) and height of the side members (202), (203) gradually increase away from their connections ends.
2. The heat shield as claimed in claim 1, wherein the width of the top member (201) increases with the height of the side members (202), (203) to form a funnel shape.
3. The heat shield as claimed in claim 1, wherein the side members (202), (203) and the top member (201) are being formed with a zig-zag profile.
4. The heat shield as claimed in claim 1, wherein each of the side members (202), (203) is a C shaped section to provide access for tool for docking engine to the rubber mount.
5. The heat shield as claimed in claim 1, wherein the top member (201) and the side members (202), (203) are formed of a perforated aluminium.
6. The heat shield as claimed in claim 1, wherein the heat shield (200) is secured on a engine arm by use of a plurality of fasteners including nuts and bolts.
7. The heat shield as claimed in claim 1, wherein the connection ends of the top member (201) and the side members (202), (203) are extended with a connection flange having a through hole to receive a fastener for mounting the heat shield on a engine arm.
8. The heat shield as claimed in claim 1, wherein the heat shield is open from a bottom portion, and wherein the rubber mount is expose to air circulating from the open bottom portion of the heat shield

Description:A HEAT SHIELD TO PROTECT AN ENGINE MOUNT

TECHNICAL FIELD
[0001] The present subject matter described herein relates to a heat shield mounted on the engine mount of an automobile. In particular, the present subject matter relates to a heat shield present on top of the engine mount of an engine to minimize the heat load effect and elevated temperatures in the region surrounding insulator rubber.

BACKGROUND
[0002] A vehicle structure is separated from engine vibration with the help of engine mounts. Usually, engine mounts are comprised of complex elastomer elements having proper/required stiffness and damping properties. Such properly designed properties can change and/or materials may degrade when the engine mount insulator rubber (elastomer) is exposed to heat and such an effect of heat can permanently damage the engine mount insulator rubber.
[0003] In the existing design, the engine mounting component is made up of sheet metal. The heat load is usually derived from the exhaust manifold, catalytic converter, and combustion chamber of cylinder block (engine). The heat load on the insulator rubber is transferred by three modes, i.e. first is Conduction that is derived from the cylinder block directly. The second and third are Convection and Radiation derived from the exhaust manifold and catalytic converter. Due to the multiple modes of heat transfers from different heat sources, there can be performance degradation in the durability of the part (engine mount-insulator rubber).
[0004] The disadvantage in the conventional system and designs is that the engine mounting component is made up of sheet metal and moreover there is no provision of a heat shield to minimize the heat load effect and elevated temperatures in the region surrounding insulator rubber. Due to this, there can be performance degradation in the durability of the part.
[0005] It is thereby required to provide a heat shield for an engine mount that can isolate the rubber insulator of the engine mount from elevated temperature of the surrounding area due to heat source namely exhaust manifold and catalytic converter.
OBJECTS OF THE DISCLOSURE
[0006] It is therefore the object of the present disclosure to overcome the aforementioned and other drawbacks in prior method/product/apparatus.
[0007] It is a primary object of the present disclosure is to isolate the rubber insulator of the engine mount from elevated temperature of the surrounding area due to heat source namely exhaust manifold and catalytic converter.
[0008] It is another object of the present disclosure to protect the rubber mount from the heat load.
[0009] It is another object of the present disclosure is to provide a heat shield that is rigid and stiff enough to avoid vibrations of its own.
[0010] It is another object of the present disclosure to optimize its height and width of the heat shield in order to fulfill the dynamic clearance requirements in the area where it is mounted.
[0011] It is another object of the present disclosure to provide a heat shield such that it gives proper tool access for easy docking of the powertrain with the vehicle body.
[0012] It is another object of the present disclosure to maintain proper airflow and shape of the heat shield such that it can diverge the entrapped hot air in the surrounding region.
[0013] These and other objects and advantages of the present subject matter will be apparent to a person skilled in the art after consideration of the following detailed description taken into consideration with accompanying drawings in which preferred embodiments of the present subject matter are illustrated.

SUMMARY
[0014] A solution to one or more drawbacks of existing technology and additional advantages are provided through the present disclosure. Additional features and advantages are realized through the technicalities of the present disclosure. Other embodiments and aspects of the disclosure are described in detail herein and are considered to be a part of the claimed disclosure.
[0015] The present disclosure offers a solution in the form of a heat shield to protect an engine mount of an engine, the engine mount being positionable between an engine arm and a bodyside bracket where the body side bracket is mounted on the rubber side bracket at the centre, and the engine arm is welded to the rubber mount. The heat shield includes a top member, a connection end of which is secured on a top surface of the engine arm, side members extending along corresponding side edges of the top member and secured from their connection ends on side surfaces of the engine arm, wherein a width of the top member and height of the side members gradually increase away from their connections ends.
[0016] In an aspect of the invention, the width of the top member increases with the height of the side members to form a funnel shape.
[0017] In an aspect of the invention, the side members are being formed with a zig-zag profile.
[0018] In another aspect of the invention, each of the side members is a C shaped section to provide access for tool for docking body side bracket to rubber mount.
[0019] In another aspect of the invention, the top member and the side members are formed of a perforated aluminium.
[0020] In an aspect of the invention, the heat shield is secured on an engine arm by use of a plurality of fasteners including nuts and bolts.
[0021] In another aspect of the invention, the connection ends of the top member and the side members are extended with a connection flange having a through hole to receive a fastener for mounting the heat shield on an engine arm.
[0022] In another aspect of the invention, the heat shield is open from a bottom portion, and the rubber mount is expose to air circulating from the open bottom portion of the heat shield.
[0023] 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 DRAWINGS
[0024] It is to be noted, however, that the appended drawings illustrate only typical embodiments of the present subject matter and are therefore not to be considered for limiting of its scope, for the present disclosure may admit to other equally effective embodiments. The detailed description is described with reference to the accompanying figures. In the figures, a reference number identifies the figure in which the reference number first appears. The same numbers are used throughout the figures to reference like features and components. Some embodiments of system or methods or structure in accordance with embodiments of the present subject matter are now described, by way of example, and with reference to the accompanying figures, in which:
[0025] Fig. 1 is an illustrative view of the engine mounting connected to the engine arm and a body side bracket;
[0026] Fig. 2 is a perspective inner view of the heat shield;
[0027] Fig. 3 is a side view of the engine mounting connected to the engine arm and a body side bracket;
[0028] Fig. 4 is a top view of the engine mounting connected to the engine arm and a body side bracket;
[0029] Fig. 5 is a bottom view of the engine mounting connected to the engine arm and a body side bracket.
[0030] The figures depict embodiments of the present subject matter for 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
[0031] 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 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 spirit and scope of the present disclosure as defined by the appended claims.
[0032] 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.
[0033] 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 be executed concurrently or may sometimes be executed in the reverse order, depending upon the functionality/acts involved.
[0034] 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 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.
[0035] In the following detailed description of the embodiments of the disclosure, reference is made to the accompanying drawings that form a part hereof, and in which are shown by way of illustration specific embodiments in which the disclosure may be practiced. These embodiments are described in sufficient detail to enable those skilled in the art to practice the disclosure, and it is to be understood that other embodiments may be utilized and that changes may be made without departing from the scope of the present disclosure. The following description is, therefore, not to be taken in a limiting sense.
[0036] Hereinafter, a description of an embodiment with several components in communication with each other does not imply that all such components are required. On the contrary, a variety of optional components are described to illustrate the wide variety of possible embodiments of the present disclosure.
[0037] Referring to Fig. 1 of the present invention, an engine mount (101) that is positioned between an engine arm (102) and a body side bracket (103) is depicted. A heat shield (200) is mounted on top of the engine mount (101) and is secured on an engine arm (102) by a plurality of fasteners including nuts and bolts. The body side bracket (103) is mounted on a rubber side bracket at the centre. Further, the engine arm (102) is welded to the rubber mount.
[0038] Referring to Fig. 2, the heat shield (200) has structurally three different parts. A top member (201) having a connection end that is secured on a top surface of the engine arm (102). Two side members (202), (203) that are extended along corresponding side edges of the top member (201). The connection ends on the side surfaces help in securing the heat shield (200) to the engine arm (102). Further, the heat shield (200) is open from a bottom portion as depicted in Fig. 2. The rubber mount is expose to air circulating from the open bottom portion of the heat shield. Such exposure of rubber mount to air helps in cooling of the rubber mount.
[0039] The width of the top member and the height of the side members (202), (203) increases and extends gradually away from their connections ends. As the width of the top member (201) increases with the height of the side members (202), (203), it forms a funnel. The funnel helps in diverting the heat flow away from the engine mount (101) to the surrounding parts. Thus the entire heat shield (200) having a funnel shape acts as an insulating casing enclosing the engine mount (101).
[0040] The connection ends of the top member (201) and the side members (202), (203) are extended with a connection flange having a through hole to receive a fastener comprising of nuts and bolts for mounting the heat shield (200) on an engine arm (102).
[0041] The side members (202), (203) are formed with a zig-zag profile. The zig zag profile has different surface areas or height and width. The zig zag shape is provided so that it is rigid and stiff enough to avoid vibrations of its own. The height and width pertaining to the zig zag profile gradually increases for fulfilling the clearance requirement from body side bracket (103). The side members (202), (203) is formed with a C-shaped profile cut at an end away from the connection end to provide access for tool for docking engine to the rubber mount. The C-shaped profile cut is provided to have easy access for docking the integrated heat shield (200) engine arm (102) with the rubber mount.
[0042] Referring to Fig. 3, the heat shield (200) connected to the engine arm (102) and a body side bracket (103) is depicted. The heat shield has varying height to fulfill the dynamic clearance requirement from the body side bracket (103). C shaped section are made so that space for mounting body side bracket with rubber mount.The connection ends of the top member (201) and the side members (202), (203) are extended with a connection flange having a through hole to receive a fastener for mounting the heat shield on anengine arm (102).
[0043] Referring to Fig. 4, the heat shield (200) connected to the engine arm (102) and a body side bracket (103) is depicted. The heat shield covers the engine mount (101) and is positioned between an engine arm (102) and a body side bracket (103) such that all the dynamic clearance requirements are met.
[0044] Referring to Fig. 5, the heat shield (200) connected to the engine arm (102) and a body side bracket (103) is depicted. The heat shield (200) covers the engine mount (101). The engine mount (101) is basically made of insulated rubber for damping the shocks and vibrations that occur due to the working of an engine. The engine mount (101) is integrated with a heat shield (200) that is made up of perforated aluminum. The thickness of the heat shield (200) is around thickness 1 mm to reduce the elevated temperatures in the region surrounding the insulator. The heat shield (200) function is minimizing the heat load effect and elevated temperatures in the region surrounding the engine mount (101) made of insulator rubber. The heat loads is basically transferred from the exhaust manifold, catalytic converter, and combustion chamber of cylinder block (engine)where all of them are a part of the engine.
[0045] The heat shield (200) includes top member (201) having a connection end that is secured on a top surface of the engine arm (102). Two side members (202), (203) that are extended along corresponding side edges of the top member (201). The connection ends on the side surfaces help in securing the heat shield (200) to the engine arm (102).
TECHNICAL ADVANTAGES
[0046] With the help of the solution as proposed herein in the context of the present disclosure, the vibrations of the engine mount (101) are absorbed more efficiently due to the shape of the heat shield (200) which is rigid and stiff. The rubber insulator of the engine mount (101) is isolated from the elevated temperature of the surrounding area and therefore the heat is dissipated in the surroundings.
[0047] The present disclosure further provides for an easy assembly, with minimal inclusion of the additional components, thereby satisfying various structural and operational requirements and parameters.
[0048] 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 disclosures 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. Also, 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 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 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.”
[0049] It will be further appreciated that functions or structures of a plurality of components or steps may be combined into a single component or step, or the functions or structures of one-step or component may be split among plural steps or components. The present disclosure contemplates all of these combinations. Unless stated otherwise, dimensions and geometries of the various structures depicted herein are not intended to be restrictive of the disclosure, and other dimensions or geometries are possible. Also, while a feature of the present disclosure may have been described in the context of only one of the illustrated embodiments, such feature may be combined with one or more other features of other embodiments, for any given application. It will also be appreciated from the above that the fabrication of the unique structures herein and the operation thereof also constitute methods in accordance with the present disclosure. The present disclosure also encompasses intermediate and end products resulting from the practice of the methods herein. The use of “comprising” or “including” also contemplates embodiments that “consist essentially of” or “consist of” the recited feature.