[001] The present subject matter described herein, relates to an engine mounting bracket, and in particularly, to an engine mounting bracket with I section and C section for improving noise and vibration at higher frequencies in multiple directions.
BACKGROUND AND PRIOR ART:
[002] In automobile, an engine is disposed in an engine cabin of automobile wither front end or rear end. The engine is mounted on body of the automobile through engine-mounts to avoid transferring of engine vibrations into the automobile body. The engine-mounts suppress vibration from the engine, by damping the vibrations with the help of isolator rubber. As a result, such vibration is intercepted and prevented from being transmitted to the automobile body or, e.g., to the interior of the automobile.
[003] During running of vehicle, there are numerous vibrations that result such as vertical, longitudinal and roll vibrations in the engine. These vibrations can be transferred into the passenger cabin of the automobile if there is no proper damping provided.
[004] The engine mounting system consists of a rubber bush, body side bracket, and a power train side bracket. The rubber bush is provided in between the body side bracket and the power train side bracket to damp the vibrations in X, Y, and Z direction. The engine mount brackets are arranged relative to the engine and the frame so that the links do not swing substantially when the engine moves vertically or longitudinally relative to the frame and do swing substantially when the engine rolls relative to the frame.
[005] Fig. 1 and 2 illustrates structure of the existing engine mounting bracket as known in the art. The engine mounting bracket 100 has engine mounting base 101 and transmission case 102 connected with the engine mounting base 101 via connecting ribs 103a, 103b at sides and with connecting base 103. From the

engine mounting base 101, the engine mounting bracket 100 is mounted on the engine or transmission side of the automobile. The engine mounting base 101 and the Transmission case 102 have through holes to receive screws for mounting. The connecting base 103 joins the engine mounting base 101 and the transmission case 102. Further, to provide strength and to mitigate vibrations in a direction, the connecting base 103 has inclined reinforcing ribs 303a, 303bReferring to figure 2 which illustrates bottom view of the engine mounting bracket 100 having a plurality of weight reducing cavities 104. The plurality of cavities 104 has non-uniform structures to provide strength to the engine mounting bracket. However these cavities do not provide any functionality towards noise reduction.
[006] In the existing art, some other designs, such as L shape, U shape of the engine mounting bracket are present which restrict transferring of vibrations from the engine to vehicle body in one direction only not in all directions. Another technical constraint with the existing engine mounting bracket is to reduce weight. If weight of the bracket is reduced, there are high chances that bracket will break down.
[007] Existing engine mounting brackets has L shape design to cater vibrations. Whenever there is any modification in the existing design or structure of the engine mounting bracket, it improves the vibration attributes in one direction but deteriorate the performance attributes in other direction as it is a trade-off due to design space constraint.
[008] Technical problem in the existing engine mounting brackets is to cater vibrations and noise at higher frequencies. In order to achieve the present objective or solution for the present technical problem, the inventor of the present invention faces the several major technical issues such as space constraint. With the existing design and structure of the engine mounting bracket, it is not possible to make the engine mounting bracket which has high strength even at high frequencies to damp noise and vibrations.
[009] Therefore, there is need in the art to develop an engine mounting bracket which can prevent vibrations and noise in all directions at high frequencies.

Therefore, the inventors of the present invention provide a technical solution of the technical problem by efficiently handling the space constrain issue of the engine mounting bracket.
OBJECTS OF THE INVENTION:
[0010] The principal objective of the present invention is to provide an engine mounting bracket to avoid noise in all direction at high frequencies.
[0011] Another object of the present subject matter is to provide an engine mounting bracket with I section or I shape.
[0012] Another object of the present subject matter is to provide an engine mounting bracket with C section cutout under body to improve noise performance.
[0013] Yet another object of the present invention is to provide an engine mounting bracket with I shape and C section cutout.
SUMMARY OF THE INVENTION:
[0014] The subject matter disclosed herein relates to an engine mounting bracket to reduce noise and vibrations at higher frequencies in vehicle running condition. The present engine mounting bracket has I shape structure to provide strength in all directions. Further, I shape structure of the engine mounting bracket reduces transferring of noise from the engine to the body. The present I shaped engine mounting bracket has one solid base in between the engine mounting and automobile mounting which restrict transmitting of vibrations from the engine to the automobile body at high frequencies. The present I shaped engine mounting bracket has an engine mounting base and a engine mounting bracket section. The engine mounting base is joined with the transmission case by an inclined joint portion which provides strength. Further, a cavity is defined under the inclined joint portion to provide stiffness and restrict transmission of vibrations in vertical upward direction. The cavity defines C section cavity under the inclined joint portion. The C section cavity reduces weight of the bracket and provides strength to the engine mounting bracket. Therefore, the combination of I shape and C

shape cavity in the engine mounting bracket improves stiffness/strength in all directions, such as X, Y, Z. Further, the present engine mounting bracket leads to reduction in noise at higher frequencies in multiple directions.
[0015] In order to further understand the characteristics and technical contents of the present subject matter, a description relating thereto will be made with reference to the accompanying drawings. However, the drawings are illustrative only but not used to limit scope of the present subject matter.
BRIEF DESCRIPTION OF THE DRAWINGS
[0016] 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 invention may admit to other equally effective embodiments. The detailed description is described with reference to the accompanying figures. In the figures, the left-most digit(s) of 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 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:
[0017] Fig. 1 and 2 illustrates structure of existing engine mounting bracket as known in the art;
[0018] Fig. 3 illustrates front view of I shape engine mounting bracket, in accordance with an embodiment of the present subject matter;
[0019] Fig. 4 illustrates back perspective view of the I shape engine mounting bracket as shown in the fig. 3, in accordance with an embodiment of the present subject matter;
[0020] Fig. 5 illustrate front view of the I shape engine mounting bracket illustrating formation of I shape, in accordance with an embodiment of the present subject matter;

[0021] Fig. 6 illustrate cross section AA of the I shape engine mounting bracket as shown in the figure 5, in accordance with an embodiment of the present subject matter; and
[0022] Fig. 7 illustrates mounting of the I shape engine mounting bracket on the transmission of the automobile, in accordance with an embodiment of the present subject matter.
[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.
DESCRIPTION OF THE PREFERRED EMBODIMENTS:
[0024] The subject matter disclosed herein relates to an engine mounting bracket to reduce noise at higher frequencies in vehicle running condition. The present engine mounting bracket has I shape structure to provide strength in all directions. Further, I shape structure of the engine mounting bracket reduces transferring of noise and vibrations from the engine to the body. The present I shaped engine mounting bracket has an engine mounting base and an engine mounting bracket section. The engine mounting base is joined with the engine mounting bracket section by an inclined joint portion which provides strength. Further, the engine mounting bracket section is horizontally extended solid bar of metal which joins with the engine mounting base to define a I shape. Further, a cavity is defined under the inclined joint portion to provide stiffness and restrict transmission of vibrations in vertical upward direction. The cavity defines C section cavity under the inclined joint portion. The C section cavity reduces weight of the bracket and provides strength to the engine mounting bracket. Therefore, the combination of I shape and C shape cavity in the engine mounting bracket improves stiffness/strength in all directions, such as X, Y, Z. Further, the present engine mounting bracket leads to reduction in noise at higher frequencies in multiple directions.

[0025] In an embodiment, the engine mounting bracket includes bracket extension arm extending in vertically forward direction from rear surface of the engine mounting bracket section.
[0026] In another embodiment, the engine mounting base has a plurality of mounting holes to mount the I shaped engine mounting bracket on the engine.
[0027] In another embodiment, the joined engine mounting base and the engine mounting bracket section define I shaped profile.
[0028] In another embodiment, the cavity defines C section for weight reduction and strengthens the bracket.
[0029] In another embodiment, the cavity is provided under the inclined joint portion.
[0030] In another embodiment, the cavity defines reinforcing ribs connected to corner mounting holes provided on the engine mounting base with the engine mounting bracket section.
[0031] In another embodiment, the inclined joint portion is provided with a weight reducing cavity.
[0032] In another embodiment, the I shaped engine mounting bracket is single casted engine mounting.
[0033] In yet another embodiment, the inclined joint portion starts inclination from the engine mounting base and goes up to the engine mounting bracket section.
[0034] It should be noted that the description and figures merely illustrate the principles of the present subject matter. It should be appreciated by those skilled in the art that 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 subject matter. It should also be appreciated by those skilled in the art that by devising various arrangements that, although not explicitly described or shown herein, embody the principles of the present subject

matter and are included within its spirit and scope. Furthermore, all examples recited herein are principally intended expressly to be for pedagogical purposes to aid the reader in understanding the principles of the present subject matter and the concepts contributed by the inventor(s) to furthering the art, and are to be construed as being without limitation to such specifically recited examples and conditions. The novel features which are believed to be characteristic of the present subject matter, 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.
[0035] 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.
[0036] Fig. 3 illustrates structure of I shape engine mounting bracket, in accordance with an embodiment of the present subject matter. The present engine mounting bracket 300 is in I shape to mitigate noise and vibrations in all directions, such as X, Y, and Z direction. The I shaped engine mounting bracket 300 has an engine mounting base 301 which is mounted on the transmission case. The engine mounting base 301 is joined with the engine mounting bracket section 302 by an inclined joint portion 303. Further, the engine mounting base 301 is integrally joined with the engine mounting bracket section 302. The inclined joint portion 303 starts inclination from the engine mounting base 301 and goes upto the engine mounting bracket section 302 and define the inclined joint portion 303. The engine mounting base 301 and the engine mounting bracket section 302 are solid portions and extend in X direction as shown in figure 3. Referring to figure 5, the engine mounting base 301 and the engine mounting bracket section 302 join with each other by the inclined joint portion 303 in Y direction to define an I

shape profile of the bracket. In other words, the engine mounting bracket section 302 is horizontally extended solid bar of metal which joins with the engine mounting base to define an I shape. Therefore, the present I shaped engine mounting bracket 300 has one solid base in between the engine mounting and automobile mounting which restrict transmission of vibrations from the engine to the automobile body at high frequencies.
[0037] In an embodiment of the present subject matter as shown in the figure 4, the I shaped engine mounting bracket 300 has a weight reducing cavity 304 which is defined under the inclined joint portion 303 to provide stiffness to the I shaped engine mounting bracket along with weight reduction. Referring to figure 6, the cavity 304 defines a C section for weight reduction and restricting transmission of vibrations to vehicle body at high frequencies. Further, the cavity 304 restricts transmission of vibrations in vertical upward direction. Further, the combination of I shape profile and C shape cavity in the engine mounting bracket improves stiffness/strength in all directions, such as X, Y, Z along with reduction in noise at higher frequencies in multiple directions.
[0038] Referring to figure 3, the engine mounting base 301 has a plurality of mounting holes 301a, 301b, 301c to mount the engine mounting bracket 300 on the engine (as shown in the figure 7). The engine mounting bracket is mounted on the intermediate bracket 702 via the plurality of mounting holes 301a, 301b, 301c through screws/bolts.
[0039] In another embodiment of the present subject matter as illustrated in the figure 4, a bracket extension arm 305 extend vertically forward direction from rear surface 302b of the engine mounting bracket section 302. The rear surface 302b is vertically opposite to the front surface 302a which faces the inclined joint portion 303.
[0040] Referring to figure 4 and figure 6, the Cavity 304 reduces the weight of the I shaped engine mounting bracket 300. The cavity 304 is in C shape which reduces noise at higher frequencies in multiple directions. The C shape cavity 304 has two reinforcing ribs 304a, 304b which extend at the corners of the engine

mounting base 301 and joins the lower portion of the engine mounting bracket section 301. The reinforcing ribs 304a, 304b absorb the dissipated energy at the corner mounting holes 301a, 301c of the engine mounting base 301 efficiently and provide strength to the bracket. From the figure 6, shape of the cavity 304 is clearly visible.
[0041] Referring again to figure 7, the I shaped engine mounting bracket 300 (703) is mounted on the engine transmission 701 through the plurality of mounting holes and screws 704.
[0042] The present I shape engine mounting bracket is a single piece bracket formed by casting process. Further, material of the engine mounting bracket can be Aluminum alloy, Magnesium, Titanium Alloy and cast iron. Further, static and modal analysis of engine mounting bracket was done in order to investigate whether the current natural frequency of engine mounting bracket is lower than that of self excitation frequency of bracket.
[0043] The term "vehicle" or "Automobile" as used throughout this detailed description and in the claims refers to any moving vehicle that is capable of carrying one or more human occupants or Goods and is powered by any form of energy. The term "vehicle" is a motor vehicle which includes, but is not limited to: cars, trucks, vans, minivans, hatchback, sedan, MUVs, and SUVs.
[0044] 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 invention 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 invention, and other dimensions or geometries are possible. In addition, while a feature of the present invention 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 invention. The present invention 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.
[0045] Although embodiments for the present subject matter have been described in language specific to structural features, it is to be understood that the present subject matter is not necessarily limited to the specific features described. Rather, the specific features and methods are disclosed as embodiments for the present subject matter. Numerous modifications and adaptations of the system/component of the present invention will be apparent to those skilled in the art, and thus it is intended by the appended claims to cover all such modifications and adaptations which fall within the scope of the present subject matter.

We claim:
An I shaped engine mounting bracket (300) for damping noise and vibrations in engine at high frequency, the I shaped engine mounting bracket (300) comprising:
an engine mounting base (301) and an engine mounting bracket section (302), wherein the engine mounting base (301) is joined with the engine mounting bracket section (302) by an inclined joint portion (303); and
a cavity (304) defined under the inclined joint portion (303) to provide stiffness to the I shaped engine mounting bracket (300).
The I shaped engine mounting bracket (300) as claimed in claim 1, wherein a bracket extension arm (305) extends vertically forward from rear surface (302b) of the engine mounting bracket section (302).
The I shaped engine mounting bracket (300) as claimed in claim 1, wherein the engine mounting base (301) has a plurality of mounting holes (301a, 301b, 301c) to mount the I shaped engine mounting bracket (300) on the engine.
The I shaped engine mounting bracket (300) as claimed in claim 1, wherein the joined engine mounting base (301) and the engine mounting bracket section (302) define I shaped profile.
The I shaped engine mounting bracket (300) as claimed in claim 1, wherein the cavity (304) define C section.
The I shaped engine mounting bracket (300) as claimed in claim 1, wherein the cavity (304) is provided under the inclined joint portion (303).

The I shaped engine mounting bracket (300) as claimed in claim 1, wherein the cavity (304) defines reinforcing ribs (304a, 304b) connects corner mounting holes (301a, 301c) of the engine mounting base (301) with the engine mounting bracket section (302).
The I shaped engine mounting bracket (300) as claimed in claim 1, wherein the inclined joint portion (303) is provided with a weight reducing cavity (304).
The I shaped engine mounting bracket (300) as claimed in claim 1, wherein the I shaped engine mounting bracket (300) is single casted engine mounting.
The I shaped engine mounting bracket (300) as claimed in claim 1, wherein the inclined joint portion (303) starts inclination from the engine mounting base (301) and goes up to the engine mounting bracket section (302).