HERO MOTOCORP LIMITED, an Indian Company at: The Grand Plaza, Plot No.2, Nelson Mandela Road, Vasant Kunj- Phase -II, New Delhi, India, 110 070

THEFOLLOWINGSPECIFICATION PARTICULARLY DESCRIBES THE INVENTION AND THE MANNER IN WHICH IT IS TO BE PERFORMED.

FIELD OF THE INVENTION:
[001] The present invention relates to an engine suspension for a vehicle and a vehicle incorporating the same.

BACKGROUND OF THE INVENTION:
[002] A vehicle generally comprises a body frame structure and an engine unit supported by the body frame structure via an engine suspension. In scooters, the engine unit and a rear ground engaging member are required to exhibit integral pivotal motion with respect to the body frame. The engine suspension allows for the engine unit and the rear ground engaging member to exhibit integral pivotal motion while stably supporting the engine unit.

[003] The engine unit is a heavy assembly and experiences a variety of conditions due to own engine unit operation, due to swinging movement of the engine unit with respect to the body frame and due to movement of the vehicle. Thus, a traditional engine suspension comprises a frame pivot shaft that pivotally coupled the engine suspension on the body frame and an engine pivot shaft that pivotally coupled the engine suspension on the engine unit. The frame pivot shaft and the engine pivot shaft are located substantially parallel. The frame pivot shaft is coupled to the engine pivot shaft via a pair of linking elements. One such traditional construction of the engine suspension is disclosed in JP2015157508.

[004] However, such traditional construction of the engine suspension has a drawbacks such as difficult to achieve dimensional accuracy of the engine suspension as it is made of joining multiple parts by welding, the process of manufacturing the engine suspension is complex as it increases number of manufacturing steps, and the overall weight of the engine suspension becomes high, that has a further impact on the vehicle mileage and cost.

[005] Thus, there exists a need to provide an engine suspension that addresses one or more of the above mentioned disadvantages.

SUMMARY OF THE INVENTION:
[006] This Summary is provided to introduce a selection of concepts in a simplified form that are further described below in the Detailed Description. This Summary is not intended to identify key or essential features.
[007] In one aspect of the present invention, there is provided a die casted engine suspension for vehicle. The die casted engine suspension comprising: a shoulder portion pivotally coupled to a body frame of the vehicle along a first pivot axis; a first arm and a second arm extending from the shoulder portion in a first direction, the shoulder portion interconnecting the first arm and the second arm ;the first arm and the second arm pivotally coupled to an engine unit of the vehicle along a second pivot axis , the second pivot axis being parallel to the first pivot axis ; and a neck portion extending from the shoulder portion in a second direction, the neck portion being pivotally coupled to the body frame of the vehicle.

[008] In an embodiment of the present invention, the shoulder portion includes a first aperture and a second aperture that faces each other in the vehicle width direction defining the first pivot axis.

[009] In another embodiment of the present invention, the first arm and the second arm include a third aperture set and a fourth aperture set that faces each other in the vehicle width direction defining the second pivot axis.

[0010] In an embodiment of the present invention, a first reinforcing structure is provided between the first arm and the second arm.

[0011] In another embodiment of the present invention, the first arm is formed of a first arm wall, a second arm wall and a first base wall ; the second arm is formed of a third arm wall, a fourth arm wall and a second base wall; a proximal end of the first arm wall terminating at the shoulder portion; a proximal end of the fourth arm wall terminating at the shoulder portion; a proximal end of the second arm wall being coupled to a proximal end of the third arm wall at an intermediate arm connection portion.

[0012] In yet another embodiment of the present invention, a second reinforcing structure set is provided between the first arm wall and the second arm wall.

[0013] In another embodiment of the present invention, a third reinforcing structure set is provided between the third arm wall and the fourth arm wall.

[0014] In another embodiment of the present invention, a fourth reinforcing structure set is provided between the intermediate arm connection portion and the shoulder portion.

[0015] In yet another embodiment of the present invention, the engine suspension further comprises a third reinforcing structure set provided between the third arm wall and the fourth arm wall.

[0016] In still another embodiment of the present invention, the die casted engine suspension is made of a single piece.

[0017] In a further embodiment of the present invention, the die casted engine suspension is made of joining multiple pieces.

[0018] In a furthermore embodiment of the present invention, the die casted engine suspension is made of aluminium.

[0019] In accordance with a further aspect of the present invention, there is provide a vehicle comprising a front ground engaging member and a rear ground engaging member; an engine unit for providing power to the front ground engaging member and the rear ground engaging member and a die casted engine suspension supporting the engine unit such that the engine unit and the rear ground engaging member integrally exhibits pivotal motion with respect to body frame. In an embodiment of the invention, the die casted engine suspension comprises a shoulder portion pivotally coupled to a body frame of the vehicle along a first pivot axis; a first arm and a second arm extending from the shoulder portion in a first direction, the shoulder portion interconnecting the first arm and the second arm ;the first arm and the second arm pivotally coupled to an engine unit of the vehicle along a second pivot axis , the second pivot axis being parallel to the first pivot axis ; and a neck portion extending from the shoulder portion in a second direction, the neck portion being pivotally coupled to the body frame of the vehicle.

[0020] One advantage of the present invention is that the die casted engine suspension has substantially reduced weight as compare to the conventional engine suspension. Another advantage is that the die casted engine suspension has substantially high strength as compare to the conventional engine suspension. Yet another advantage is that the die casted engine suspension can be manufactured more easily as compare to the conventional engine suspension.

[0021] Still another advantage of the present invention is that the die casted engine suspension has higher dimensional accuracy as compare to the conventional engine suspension. A further advantage is that the tests for checking integrity of the die casted engine suspension can be easily performed as compared to the conventional engine suspension. A further more advantage is that the die casted engine suspension has a longer life and is less prone to premature failures as compared to the conventional engine suspension. Another advantage is that the weight of the vehicle reduces, as a result of the reduced weight of the die casted engine suspension. Yet another advantage is a reduction in the cost of manufacturing the die casted engine suspension as well the cost of manufacturing the vehicle.

[0022] To further clarify the advantages and features of the invention, a more particular description of the invention will be rendered by reference to specific embodiments thereof, which is illustrated in the appended drawings. It is appreciated that these drawings depict only typical embodiments of the invention and are therefore not to be considered limiting of its scope. The invention will be described and explained with additional specificity and detail with the accompanying drawings.

BRIEF DESCRIPTION OF THE FIGURES:
[0023] In order that the invention may be readily understood and put into practical effect, reference will now be made to exemplary embodiments as illustrated with reference to the accompanying drawings, where like reference numerals refer to identical or functionally similar elements throughout the separate views. The figures together with a detailed description below, are incorporated in and form part of the specification, and serve to further illustrate the embodiments and explain various principles and advantages, in accordance with the present invention where:

[0024] Figure 1 illustrates a side view of an exemplary vehicle, in accordance with an embodiment of the present invention;

[0025] Figure 2 illustrates a magnified bottom perspective view of the vehicle showing an example of configuration around the body frame and the engine unit, in accordance with an embodiment of the present invention;

[0026] Figure 3 illustrates an isometric view of a die casted engine suspension, in accordance with an embodiment of the present invention;

[0027] Figure 4 illustrates an isometric view of the die casted engine suspension provided with a first reinforcing structure set, in accordance with an embodiment of the present invention;

[0028] Figure 5 illustrates an isometric view of the die casted engine suspension provided with a second reinforcing structure set, a third reinforcing structure set and a fourth reinforcing structure set, in accordance with an embodiment of the present invention; and

[0029] Figure 6 illustrates an isometric view of the die casted engine suspension, in accordance with an alternative embodiment of the present invention.

[0030] It may be noted that to the extent possible, like reference numerals have been used to represent like elements in the drawings. Further, skilled artisans will appreciate that elements in the drawings are illustrated for simplicity and may not have been necessarily been drawn to scale. For example, the dimensions of some of the elements in the drawings may be exaggerated relative to other elements to help to improve understanding of aspects of the present invention. Furthermore, one or more elements may have been represented in the drawings by conventional symbols, and the drawings may show only those specific details that are pertinent to understanding the embodiments of the present invention so as not to obscure the drawings with details that will be readily apparent to those of ordinary skill in the art having the benefit of the description herein.

Detailed Description of the Invention:
[0031] For the purpose of promoting an understanding of the principles of the invention, reference will now be made to the embodiment illustrated in the drawings and specific language will be used to describe the same. It will nevertheless be understood that no limitation of the scope of the invention is thereby intended, such alterations and further modifications in the illustrated device, and such further applications of the principles of the invention as illustrated therein being contemplated as would normally occur to one skilled in the art to which the invention relates.

[0032] It will be understood by those skilled in the art that the foregoing general description and the following detailed description are explanatory of the invention and are not intended to be restrictive thereof.

[0033] As used in the description herein and throughout the claims that follow, the meaning of “a,”“an,” and “the” includes plural reference unless the context clearly dictates otherwise. Also, as used in the description herein, the meaning of “in” includes “in” and “on” unless the context clearly dictates otherwise.

[0034] Reference throughout this specification to “an aspect”, “another aspect” or similar language means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the present invention. Thus, appearances of the phrase “in an embodiment”, “in another embodiment”, and similar language throughout this specification may, but do not necessarily, all refer to the same embodiment.

[0035] The terms "comprises", "comprising", or any other variations thereof, are intended to cover anon-exclusive inclusion, such that one or more devices or sub-systems or elements or structures or components proceeded by "comprises... a" does not, without more constraints, preclude the existence of other devices or other sub-systems or other elements or other structures or other components or additional devices or additional sub-systems or additional elements or additional structures or additional components.

[0036] As used herein, and unless the context dictates otherwise, the terms "coupled to", “connected to”, “operably connected to”, and “operatively connected to” are intended to include both direct connection / coupling (in which two elements that are coupled / connected to each other contact each other) and indirect coupling / connection (in which at least one additional element is located between the two elements). Therefore, the terms "coupled to" and "coupled with" are used synonymously. Similarly, the terms “connected to” and “connected with” are used synonymously.

[0037] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one ordinary skilled in the art to which this invention belongs. The device, methods, and examples provided herein are illustrative only and not intended to be limiting.

[0038] The use of any and all examples, or exemplary language (e.g. “such as”) provided with respect to certain embodiments herein is intended merely to better illuminate the invention and does not pose a limitation on the scope of the invention. No language in the specification should be construed as indicating any non-mentioned element as being essential to the practice of the invention.

[0039] Groupings of alternative elements or embodiments of the invention disclosed herein are not to be construed as limitations. Each group member can be referred to and claimed individually or in any combination with other members of the group or other elements found herein. One or more members of a group can be included in, or deleted from, a group for reasons of convenience and/or patentability. When any such inclusion or deletion occurs, the specification is herein deemed to contain the group as modified thus fulfilling the written description of all Markush groups used.

[0040] While the present invention is illustrated in the context of a vehicle, however, cover and aspects and features thereof can be used with other types of vehicles as well. The terms “vehicle”, “two wheeled vehicle” and “motorcycle” have been interchangeably used throughout the description. The term “vehicle” comprises vehicles such as motorcycles, scooters, bicycles, mopeds, scooter type vehicles, All-Terrain Vehicles (ATV) and the like.

[0041] The terms “front / forward”, “rear / rearward / back / backward”, “up / upper / top”, “down / lower / lower ward / downward, bottom”, “left / leftward”, “right / rightward” used therein represents the directions as seen from a vehicle driver sitting astride and these directions are referred by arrows Fr, Rr, U, Lr, L, R in the Figures.

[0042] Embodiments of the present invention will be described below in detail with reference to the accompanying drawings.

[0043] Referring to Figure 1, there is illustrated a vehicle (10) that comprises a front end structure (12), a rear end structure (14), and a footboard (16). The front end structure (12) forms the front portion of the vehicle (10). The rear end structure (14) forms the rear portion of the vehicle (10). The footboard (16) lies between the front end structure (12) and the rear end structure (14). The footboard (16) provides footrest for a rider riding the vehicle (10).

[0044] The front end structure (12) comprises a front ground engaging member (18), and a steering mechanism (20). The front ground engaging member (18) is operatively connected to the steering mechanism (20). In the illustrated example, the front ground engaging member (18) embodies a wheel. Alternatively, the front ground engaging member (18) embodies a track, without limiting the scope of the invention. Further, the front end structure (12) comprises a leg shield (22). The leg shield (22) encloses the steering mechanism (20). The leg shield (22) comprises an inner leg shield (24) and an outer leg shield (26). The leg shield (22) provides protection for the feet of the rider of the vehicle (10).

[0045] The front end structure (12) comprises a dash assembly (28). The dash assembly (28) comprises a display unit (not shown). The display unit displays information about the vehicle (10) to the rider. The dash assembly (28) may comprise additional components such as LCD, GPS, graphical user interface (GUI), etc. without limiting the scope of the invention. Further, the front end structure (12) may further comprise additional components such as mirror/s, head lamp/s, front fender/s, etc. without limiting the scope of the invention.

[0046] The rear end structure (14) comprises a seat (30), a rear ground engaging member (32), and an engine unit (34). The seat (30) provides seating for a rider of the vehicle (10). The engine unit (34) is swingably coupled to body frame (36) of the vehicle (10). The engine unit (34) is coupled to the ground engaging member (32) via a transmission unit (38).By way of a non- restrictive example, the engine unit (34) is an internal combustion engine. By way of a non- restrictive example, the engine unit (34) and the transmission unit (38) may be integrated with each other.

[0047] The rear end structure (14) comprises a storage box. In the illustrated example, the storage box is provided under the seat (30). More particularly, the storage box is disposed within a space defined by the seat (30) and the engine unit (34). In the illustrated example, the seat (30) is rotatably coupled to the storage box. In another example, the seat (30) may be rotatable coupled to the body frame (36). The seat (30) may be rotated manually, or with the assistance of a motor or an actuator or a solenoid, etc., without any limitations.

[0048] The body frame (36) supports the front end structure (12), the footboard (16), and the rear end structure (14). The body frame (36) comprises a head tube (40), a frame member (42), a first cross member (44), a set of seat rail members (46), a second cross member (48), and a third cross member (not shown). A set of side covers (50) are mounted to the set of seat rail members (46). The head tube (40) supports the steering mechanism (20).

[0049] The vehicle (10) includes a front brake (52) associated with the front ground engaging member (18) and a rear brake (54) associated with the rear ground engaging member (32). In one embodiment, the front and the rear brakes (52, 54) can be disc brakes and/or drum brakes which can be actuated mechanically and/or electronically.

[0050] Referring to Figure 2, there is illustrated a magnified bottom perspective view of the vehicle (10) showing an example of configuration around the body frame (36) and the engine unit (34).The engine unit(34) is provided with a left (56) and a right arm (58) in forward direction of the vehicle (10). Both, the left (56) and right arm (58) of the engine unit (34) comprises a through hole (Not shown) adaptable to incorporate with a first pivot shaft (60) extending in the vehicle (10) width direction.

[0051] Further, the first cross member (44) is provided with a left (62) and a right arm (64) in rear direction of the vehicle (10). Both, the left (62) and right arm (64) of the first cross member (44) comprises a through hole (Not shown) adaptable to interact with a second pivot shaft (66) extending in the vehicle (10) width direction. A die casted engine suspension (100) seats in between the first cross member (44) and the engine unit (34).

[0052] Specifically, the die casted engine suspension (100) is aligned with the through hole of the left (62) and right arm (64) of the first cross member (44). After the alignment, the second pivot shaft (66) is inserted in the through hole of the left (62) and right arm (64) of the first cross member (44) and a nut is tightened over the second pivot shaft (66) in order to pivotally connecting the die casted engine suspension (100) to the first cross member (44).

[0053] The other non- coupled side of the die casted engine suspension (100) is coupled with the engine unit (34) with the help of the first pivot shaft (60). A bush is press fitted in each of the through hole provided in the left (56) and right arm (58) of the engine unit (34).

[0054] After the completion of bush fitting, the die casted engine suspension (100) is aligned with the through hole of the left (56) and right arm (58) of the engine unit (34) and the first pivot shaft (60) is inserted. Once the insertion of the first pivot shaft (60) is completed, a nut is tightened over the first pivot shaft (60) in order to pivotally connecting the die casted engine suspension (100) to the engine unit (34).

[0055] Referring to Figure 3 and Figure 4, the engine suspension (100) for vehicle (10) comprises a shoulder portion (106) pivotally coupled to the body frame (36) of the vehicle (10) along a first pivot axis (112). Further, a first arm (102) and a second arm (104) extending from the shoulder portion (106) in a first direction (105), the shoulder portion (106) interconnecting the first arm (102) and the second arm (104). According to an embodiment, the first direction (105) resembles with rear direction of the vehicle (10).

[0056] The first arm (102) and the second arms pivotally coupled to the engine unit (34) of the vehicle (10) along a second pivot axis (118). The second pivot axis (118) being parallel to the first pivot axis (112). Further, the engine suspension (100) is provided with a neck portion (120) extending from the shoulder portion (106) in a second direction (107), the neck portion (106) being pivotally coupled to the body frame (36) of the vehicle (10). According to an embodiment, the second direction (107) resembles with front direction of the vehicle (10).

[0057] The shoulder portion (106) includes a first aperture (108) and a second aperture (110) that faces each other in the vehicle (10) width direction defining the first pivot axis (112). Further, the first arm (102) and the second arm (104) include a third aperture set (114) and a fourth aperture set (116) that faces each other in the vehicle (10) width direction defining the second pivot axis (118).

[0058] According to an embodiment of the present invention, the first aperture (108) and the second aperture (110) are adaptable to incorporate with the second pivot shaft (66). Similarly, the third aperture set (114) and the fourth aperture set (116) are adaptable to incorporate with the first pivot shaft (60). The first axis (112) and the second axis (118) acts as pivotal axis, while the engine unit (34) swings with respect to the die casted engine suspension (100) during the operation of the vehicle (10).

[0059] Further, the first arm (102) is formed of a first arm wall (124), a second arm wall (126) and a first base wall (128). Further, the second arm (102) is formed of a third arm wall (130), a fourth arm wall (132) and a second base wall (134). According to an embodiment, a proximal end of the first arm wall (124) terminating at the shoulder portion (106) and a proximal end of the fourth arm wall (132) terminating at the shoulder portion (106).

[0060] According to an embodiment of the present invention, a proximal end of the second arm wall (126) being coupled to a proximal end of the third arm wall (130) at an intermediate arm connection portion (136). The first arm wall (124), the second arm wall (126), the first base wall (128), the third arm wall (130), the fourth arm wall (132) and the second base wall (134) co-operates with each other to form a cavity in the die casted engine suspension (100). Further, a first reinforcing structure (122) is provided between the first arm (102) and the second arm (104) of the engine suspension (100).

[0061] Referring to Figure 5, a second reinforcing structure set (138) is provided between the first arm wall (124) and the second arm wall (126). A third reinforcing structure set (140) is provided between the third arm wall (130) and the fourth arm wall (132). A fourth reinforcing structure set (142) is provided between the intermediate arm connection portion (136) and the shoulder portion (106).

[0062] According to another embodiment of the present invention, the second reinforcing structure set (138), the third reinforcing structure set (140) and the fourth reinforcing structure set (142) being adapted for providing strength to the die casted engine suspension (100) to counter dynamic loading while the vehicle (10) is in operational state.

[0063] The fourth reinforcement structure set (142) may be in the form two plates arranged in the shape of “X”. In an alternative embodiment as shown in Figure 6, the fourth reinforcement structure set (142) may be in the form two plates that do not intersect with each other.

[0064] In an embodiment of the invention, the die casted engine suspension (100) is made of a single piece. In another embodiment of the present invention, the die casted engine suspension (100) is made of joining multiple pieces.

[0065] According to another embodiment of the present invention, the die casted engine suspension (100) is made of aluminium. The choice of the aluminium as a material for manufacturing the engine suspension (100) is non restrictive and any material selected from metal, non-metal and alloys may be used.

[0066] Since, the die engine suspension (100) of the present invention is made up of a light material, an advantage of the invention is that the die engine suspension (100) has substantially reduced weight as compare to the conventional engine suspension. Another advantage is that the die casted engine suspension (100) has substantially high strength as compare to the conventional engine suspension. Since, the die casted engine suspension (100) is formed in the single piece, yet another advantage is that the die casted engine suspension (100) can be manufactured more easily as compare to the conventional engine suspension. Still another advantage is that the die casted engine suspension (100) has higher dimensional accuracy as compare to the conventional engine suspension.

[0067] Additionally, a further advantage is that the tests for checking integrity of the die casted engine suspension (100) can be easily performed as compared to the conventional engine suspension. A further more advantage is that the die casted engine suspension (100) has a longer life and is less prone to premature failures as compared to the conventional engine suspension. Another advantage is that the weight of the vehicle (10) reduces, as a result of the reduced weight of the die casted engine suspension (100). Yet another advantage is a reduction in the cost of manufacturing the die casted engine suspension (100) as well the cost of manufacturing the vehicle (10).

[0068] While specific language has been used to describe the disclosure, any limitations arising on account of the same are not intended. As would be apparent to a person in the art, various working modifications may be made to the method in order to implement the inventive concept as taught herein.

[0069] The figures and the forgoing description give examples of embodiments. Those skilled in the art will appreciate that one or more of the described elements may well be combined into a single functional element. Alternatively, certain elements may be split into multiple functional elements. Elements from one embodiment may be added to another embodiment. For example, orders of processes described herein may be changed and are not limited to the manner described herein. Moreover, the actions of any flow diagram need not be implemented in the order shown; nor do all of the acts necessarily need to be performed. Also, those acts that are not dependent on other acts may be performed in parallel with the other acts. The scope of embodiments is by no means limited by these specific examples.

[0070] Numerous variations, whether explicitly given in the specification or not, such as differences in structure, dimension, and use of material, are possible. The scope of embodiments is at least as broad as given by the following claims.
, Claims:WE CLAIM:

1. A die casted engine suspension (100) of a vehicle (10), the die casted engine suspension (100) comprising:
a shoulder portion (106) pivotally coupled to a body frame (36) of the vehicle (10) along a first pivot axis (112);
a first arm (102) and a second arm (104) extending from the shoulder portion (106) in a first direction (105), the shoulder portion (106) interconnecting the first arm (102) and the second arm (104);
the first arm (102) and the second arm (104) pivotally coupled to an engine unit (34) of the vehicle (10) along a second pivot axis (118),the second pivot axis (118) being parallel to the first pivot axis (112); and
a neck portion (120) extending from the shoulder portion (106) in a second direction (107), the neck portion (106) being pivotally coupled to the body frame(36) of the vehicle (10).

2. The die casted engine suspension (100) as claimed in claim 1, wherein the shoulder portion (106) includes a first aperture (108) and a second aperture (110) that faces each other in the vehicle (10) width direction defining the first pivot axis (112).

3. The die casted engine suspension (100) as claimed in claim 1, wherein the first arm (102) and the second arm (104) includes a third aperture set (114) and a fourth aperture set (116) that faces each other in the vehicle (10) width direction defining the second pivot axis (118).

4. The die casted engine suspension (100) as claimed in claim 1, wherein a first reinforcing structure (122) is provided between the first arm (102) and the second arm (104).

5. The die casted engine suspension as claimed in claim 1, wherein the first arm (102) is formed of a first arm wall (124), a second arm wall (126) and a first base wall (128); the second arm (102) is formed of a third arm wall (130), a fourth arm wall (132) and a second base wall (134); a proximal end of the first arm wall (124) terminating at the shoulder portion (106); a proximal end of the fourth arm wall (132) terminating at the shoulder portion (106); a proximal end of the second arm wall (126) being coupled to a proximal end of the third arm wall (130) at an intermediate arm connection portion (136).

6. The die casted engine suspension as claimed in claim 5, wherein a second reinforcing structure set (138) is provided between the first arm wall (124) and the second arm wall (126).

7. The die casted engine suspension as claimed in claim 5, wherein a third reinforcing structure set (140) is provided between the third arm wall (130) and the fourth arm wall (132).

8. The die casted engine suspension as claimed in claim 5, wherein a fourth reinforcing structure set (142) is provided between the intermediate arm connection portion (136) and the shoulder portion (106).

9. The die casted engine suspension as claimed in claim 1, wherein the die casted engine suspension (100) is made of a single piece.

10. The die casted engine suspension as claimed in claim 1, wherein the die casted engine suspension (100) is made of joining multiple pieces.

11. The die casted engine suspension as claimed in claim 1, wherein the die casted engine suspension (100) is made of aluminium.

12. A vehicle (10), comprising:
a front ground engaging member (18) and a rear ground engaging member (32);
an engine unit (34) for providing power to the front ground engaging member (18) and the rear ground engaging member (32); and
a die casted engine suspension (100) supporting the engine unit(34) such that the engine unit(34) and the rear ground engaging member (32) integrally exhibits pivotal motion with respect to body frame (36), the die casted engine suspension (100), comprising:
a shoulder portion (106) pivotally coupled to a body frame (36) of the vehicle (10) along a first pivot axis (112);
a first arm (102) and a second arm (104) extending from the shoulder portion (106) in a first direction (105), the shoulder portion (106) interconnecting the first arm (102) and the second arm (104);
the first arm (102) and the second arm (104) pivotally coupled to an engine unit (34) of the vehicle (10) along a second pivot axis (118), the second pivot axis (118) being parallel to the first pivot axis (112); and
a neck portion (120)extending from the shoulder portion (106) in a second direction (107), the neck portion (106) being pivotally coupled to the body frame(36) of the vehicle (10).

13. The vehicle as claimed in claim 12, wherein the die casted engine suspension (100) is made of a single piece.

14. The vehicle as claimed in claim 12, wherein the die casted engine suspension (100) is made of aluminium.

15. The vehicle as claimed in claim 12, wherein the first arm (102) is formed of a first arm wall (124), a second arm wall (126) and a first base wall (128); the second arm (102) is formed of a third arm wall (130), a fourth arm wall (132) and a second base wall (134); a proximal end of the first arm wall (124) terminating at the shoulder portion (106); a proximal end of the fourth arm wall (132) terminating at the shoulder portion (106); a proximal end of the second arm wall (126) being coupled to a proximal end of the third arm wall (130) at an intermediate arm connection portion (136).