Claims:1. A grill assembly (100) for a vehicle, comprising:
a frame (1) connectable to a vehicle body (2); and
a plurality of bimetallic members (3) arranged on the frame (1) at a first position (FP), the plurality of bimetallic members (3) are configured to maintain the grill assembly (100) in a substantially closed condition at the first position (FP), to restrict air flow through the vehicle front grill (2),
wherein, each of the plurality of bimetallic members (3) are configured to move from the first position (FP) towards a second position (SP) corresponding to variation in temperature in the vehicle body (2), to maintain the grill assembly (100) in an open condition (OP) to allow the air flow through the vehicle front grill (2).

2. The grill assembly (100) as claimed in claim 1, wherein at least one of the plurality of bimetallic members (3) is a bimetallic strip configured in a form of a grill plate.

3. The grill assembly (100) as claimed in claim 2, wherein one end of the bimetallic strip is fixed to the frame (1) and other end the bimetallic strip is a free end movable between the first position (FP) and the second position (SP) corresponding to variation in the temperature in the vehicle body (2).

4. The grill assembly (100) as claimed in claim 1, wherein at least one the plurality of bimetallic members (3) is a bimetallic spring (7).

5. The grill assembly (100) as claimed in claim 4, wherein the bimetallic spring is configured to interconnect at least two grill plates arranged on the frame (1).

6. The grill assembly (100) as claimed in claim 5, wherein one end (7a) of the bimetallic spring (7) is connected to one grill plate and the other end (7b) of the bimetallic spring (7) is connected to other grill plate.

7. The grill assembly (100) as claimed in claim 6, wherein the bimetallic spring in first position is configured to maintain the two grill plates in substantially closed position, and move the grill plates to an open position corresponding to the variation in the temperature in the vehicle body location corresponding to the temperature sensitive bimetallic contraption.

8. The grill assembly (100) as claimed in claim 5, wherein the two grill plates are pivotally mounted on the frame (1) in a crisscross configuration.

9. The grill assembly (100) as claimed in claim 4, wherein the bimetallic spring is connected to a shutter member (4).

10. The grill assembly (100) as claimed in claim 9, wherein one end (7a) of the bimetallic spring (7) is connected to one end of the shutter member (4) and other end (7b) of the bimetallic spring (7) is connected another end of the shutter member (4), for operating the shutter member (4) between the closed position (CP) and the open position (OP).

11. The grill assembly (100) as claimed in claim 5, wherein the shutter member (4) is at least one of a screen, a blind and a foldable links.

12. The grill assembly (100) as claimed in claim 1, wherein each of the plurality of bimetallic members (3) are made of at least one of steel-brass, steel-copper or nickel-manganese or aluminum-copper.

13. A temperature sensitive roof scoop and a temperature sensitive front grill of a vehicle comprising a grill assembly (100) as claimed in claim 1. , Description:TECHNICAL FIELD
Present disclosure generally relates to vehicle filed of automobiles. Particularly, but not exclusively the present disclosure relates to a grill assembly for a vehicle. Further, embodiments of the present disclosure relate to a temperature adaptive grill assembly for the vehicle.

BACKGROUND OF THE DISCLOSURE
Vehicles, in general are provided with a prime mover [also referred as an engine] for generating power to manoeuvre the vehicle. The power may be generated by combustion of fuel and air mixture in the engine. The combustion of the fuel and air mixture in the engine may produce heat, which may be dissipated to the atmosphere by providing an engine cooling unit such as a radiator unit. In most of the conventional vehicles the radiator unit may be provided in front of the engine, and a radiator fan may be configured in the radiator-intercooler-condenser (heat exchangers) unit, to force air onto the radiator unit for dissipating the heat. The radiator fan may draw the ram air during the vehicle movement for the effective cooling. Thus, in most of the conventional vehicles an opening may be provided in front of the radiator fan to divert the ram air onto the radiator-intercooler-condenser (heat exchangers) unit so as to reject heat to the flowing air. However, such opening may add on aerodynamic drag force opposing the movement of the vehicle. This additional aerodynamic drag may also adversely affect fuel economy of the vehicle.

Considering the above, the conventional vehicles ranging from heavy-duty trucks to passenger vehicles may be provided with a grill assembly to regulate the opening in a vehicle front section. The grill assembly may have defined opening for the air and to allow air to pass on a radiator-intercooler-condenser (heat exchangers) for cooling. However, openings in the grill assembly again add on aerodynamic drag force against the movement of the vehicle, and which may affect the vehicle efficiency.

Also, the radiator would require more air for cooling when the temperature in the engine vicinity is high and when the ambient temperature is high. Such conditions may be encountered by the vehicles when the vehicle is driven in congestions or in very hot weather conditions or when the engine is generating maximum power/torque while moving up a gradient etc. Hence, greater air flow resulting from bigger opening in the vehicle front grill may not be always required.
To overcome the problem of aerodynamic drag force associated with the conventional grill assembly, motor actuated shutter assemblies are provisioned to the front grill in some of the conventional vehicles. The shutter assemblies may be interfaced with sensors, which may operate the shutter assembly based on its specific requirement. This configuration, however utilises additional components for operation of the shutter assembly. Thus, making the system more cumbersome and costly.

Also, when the vehicles are parked or halted in a sunny environment, the vehicle, particularly the vehicle or passenger cabin may be heated to a very high temperature which may be called as hot soak condition. In such conditions, the driver may be required to operate an air-conditioning system of the vehicle in maximum cooling mode to cool the vehicle cabin. This may lead to substantially higher AC system power consumption and may also significantly impact the efficiency of the vehicle adversely. Also, there may also be chances that a need for larger air-conditioning system to be installed for faster cooling of the vehicle cabin. Installation of the larger air-conditioning system will further increase the parasitic load on the engine due to AC system and may also increase the overall cost and weight of the vehicle, which is undesirable.

Considering the above, some of the conventional vehicles are equipped with roof scoops or roof hatches mounted on the roof of the vehicle. The roof scoops may be configured with openings, to direct air received from the atmosphere into the vehicle cabin. The roof scoops may also be utilized to let the hot air escape from the cabin to avoid hot air soak. Thus, provision of roof scoops, adds on the openings available to the vehicle for air circulation, if the roof scoop is kept open. Also, these conventional roof scoops maybe be either manually operated or through some electrical/electronic/mechanical mechanism. Also, some of the conventional vehicles may be without roof scoops, in which the air inside the vehicle cabin may be hot soaked in sunny conditions.

The present disclosure is directed to overcome one or more limitations stated above.

The information disclosed in this background of the disclosure section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgment or any form of suggestion that this information forms the prior art already known to a person skilled in the art

SUMMARY OF THE DISCLOSURE
One or more shortcomings of conventional assemblies are overcome and additional advantages are provided through the provision of an assembly as claimed in the present disclosure. Additional features and advantages are realized through the techniques of the present disclosure. Other embodiments and aspects of the disclosure are described in detail herein and are considered a part of the claimed disclosure.

In one non-limiting embodiment of the present disclosure, a grill assembly assembly for a vehicle is disclosed. The grill assembly comprises a frame connectable to a vehicle body and a plurality of bimetallic members arranged on the frame at a first position. The plurality of bimetallic members are configured to maintain the grill assembly in a substantially closed condition at the first position, to restrict air flow into the vehicle body. Each of the plurality of bimetallic members are configured to move from the first position towards a second position corresponding to variation in temperature in the vehicle body, to maintain the grill assembly in an open condition to allow the air flow into the vehicle body.

In an embodiment, at least one of the plurality of bimetallic members is a bimetallic strip configured in a form of a grill plate. One end of the bimetallic strip is fixed to the frame and other end the bimetallic strip is a free end movable between the first position and the second position corresponding to the temperature in the vehicle body.

In an embodiment, at least one of the plurality of bimetallic members is a bimetallic spring.

In an embodiment, the bimetallic spring is configured to interconnect at least two grill plates arranged on the frame. One end of the bimetallic spring is connected to one grill plate and the other end of the bimetallic spring is connected to other grill plate. The bimetallic spring in the first position is configured to maintain the two grill plates in substantially closed position, and move the grill plates to an open position corresponding to the temperature in the vehicle body.

In an embodiment, the two grill plates are pivotally mounted on the frame in a crisscross configuration.

In an embodiment, the bimetallic spring is connected to a shutter member. One end of the bimetallic spring is connected to one end of the shutter member and other end of the bimetallic spring is connected another end of the shutter member, for operating the shutter member between the closed position and the open position. Further, the shutter member is at least one of a screen, a blind and foldable links.

In an embodiment, each of the plurality of bimetallic members are made of steel-brass or steel-copper, nickel-manganese and aluminum-copper.

It is to be understood that the aspects and embodiments of the disclosure described above may be used in any combination with each other. Several of the aspects and embodiments may be combined to form a further embodiment of the disclosure.

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

Figure 1 illustrates a schematic front view of a vehicle having a grill assembly for front grill assembly of a vehicle, according to an embodiment of the present disclosure.

Figure 2a illustrates a front view of the grill assembly in a closed condition having a plurality of grill plates connected by bimetallic springs in a crisscross configuration, in accordance with one exemplary embodiment of the present disclosure.

Figure 2b illustrates a front view of the grill assembly of Figure 2a in an open position.

Figure 3a illustrates a front view of the grill assembly in the closed condition having a plurality of bimetallic grill plates, in accordance with another embodiment of the present disclosure.

Figure 3b illustrates a side view of the grill assembly of Figure 3a.

Figure 3c illustrate a front view of the grill assembly of Figure 3a in open condition.

Figure 3d illustrates a side view of the grill assembly of Figure 3c.

Figure 4a illustrates a front view of the grill assembly in the closed condition having a plurality of shutter members each provided with a bimetallic spring, in accordance with some embodiment of the present disclosure.

Figure 4b illustrates a front view of the grill assembly of Figure 4a in open condition.

Figure 5a illustrates a front view of the grill assembly in the closed condition having a plurality of bimetallic plates, in accordance with some other embodiment of the present disclosure.

Figure 5b illustrates a front view of the grill assembly for front grill assembly of a vehicle of Figure 5a in open condition.

Figure 5c illustrates a side view of the grill assembly for front grill assembly of a vehicle of Figure 5a in open condition.

Figure 6a illustrates schematic perspective view of a grill assembly for roof scoop assembly of a vehicle in closed condition configured with the plurality of bimetallic members, according to some other embodiment of the present disclosure.

Figure 6b illustrates schematic side view of the plurality of bimetallic members of the grill assembly for roof scoop assembly of a vehicle assembly of Figure 6a in second condition.

Figure 7 illustrates a schematic view of the bimetallic spring, in accordance with an embodiment of the present disclosure.

The figures depict embodiments of the disclosure for purposes of illustration only. One skilled in the art will readily recognize from the following description that alternative embodiments of the structures and methods illustrated herein may be employed without departing from the principles of the disclosure described herein.

DETAILED DESCRIPTION
While the embodiments of the disclosure are subject to various modifications and alternative forms, specific embodiment thereof has been shown by way of example in the figures and will be described below. It should be understood, however, that it is not intended to limit the disclosure to the particular forms disclosed, but on the contrary, the disclosure is to cover all modifications, equivalents, and alternative falling within the scope of the disclosure.

It is to be noted that a person skilled in the art would be motivated from the present disclosure a grill assembly for a vehicle, which may vary based on the configuration of the grill of the vehicle. However, such modifications should be construed within the scope of the disclosure. Accordingly, the drawings show only those specific details that are pertinent to understand the embodiments of the present disclosure, so as not to obscure the disclosure with details that will be apparent to those of ordinary skill in the art having the benefit of the description herein.

The terms “comprises”, “comprising”, “includes” or any other variations thereof used in the disclosure, are intended to cover a non-exclusive inclusion, such that a system and mechanism that comprises a list of components does not include only those components but may include other components not expressly listed or inherent to such system, or assembly, or device. In other words, one or more elements in an assembly proceeded by “comprises… a” does not, without more constraints, preclude the existence of other elements or additional elements in the system or device.

Embodiments of the present disclosure illustrates a grill assembly in the form of front grill assembly or roof scoop for a vehicle. The grill assembly may be configured to be adaptive to temperature variations in the vehicle location corresponding to the grill assembly, by varying the opening area in the grill assembly for circulation or flow of air into the vehicle body. The grill assembly may comprise a frame connectable to a vehicle body and a plurality of bimetallic members arranged on the frame at a first position. The plurality of bimetallic members are configured to maintain the grill assembly in a substantially closed condition at the first position, to restrict air flow into the vehicle body. Each of the plurality of bimetallic members may be configured to move from the first position towards a second position corresponding to variation in temperature in the vehicle location corresponding to the grill assembly, to maintain the grill assembly in an open condition to allow the air flow into the vehicle body. The grill assembly of the disclosure may be employed as a front grill of a vehicle or a roof scoop for the vehicle. The grill assembly according to embodiments of the disclosure may be configured to maintain the grill assembly in closed condition in normal temperatures in the vehicle location corresponding to the grill assembly. The grill assembly may allow passage of air by gradual opening corresponding to variation in temperature in the vehicle body location corresponding to the grill assembly. Thus, the aerodynamic drag force on the vehicle may be reduced which may increase the efficiency of the vehicle.

Henceforth, the present disclosure is explained with the help of one or more figures of exemplary embodiments. However, such exemplary embodiments should not be construed as limitations of the present disclosure. The assembly shown in figures is of some particular configuration, it is to be noted that slight variations in configurations of the assembly are to be considered as part of the present disclosure. Further, it is to be noted that the assembly may be used in any vehicles such as passenger cars, light duty vehicles, and heavy duty vehicles. However, for the purpose of simplicity the vehicle is not illustrated in the figures of the present disclosure.

The following paragraphs describe the present disclosure with reference to Figures 1 to 6c. In the Figures, the same element or elements which have similar functions are indicated by the same reference signs.

Figure 1 is an exemplary embodiment of the present disclosure, which illustrates a schematic front view of vehicle having a grill assembly (100) mounted on a vehicle body (2). The grill assembly (100) may be adaptive to temperature variations in the vehicle body (2), and thus selectively opens a path for air flow into the vehicle body (2) depending on variation in temperature of the vehicle body location corresponding to the grill assembly. (2). The grill assembly (100) may have a plurality of grill plates which may be operated between a closed position (CP) and an open position (OP) for allowing or circulating air into the vehicle body (2). In an embodiment, the grill assembly (100) may be provided in a front grill or a roof scoop assembly (200) of the vehicle.

The grill assembly (100) includes a frame (1), connectable to the vehicle body (2). The frame (1) is a support member, configured to support the grill assembly (100) for vehicle front grill (100) on a vehicle body. In an embodiment, the frame (1) may be selected from at least one of a bracket member, a flange or any other member, which serves the purpose of supporting grill plates or a plurality of bimetallic members (3) [shown in figure 2a]. The frame (1) may also include a guideway at an inner portion of the [not shown in figures] for slidably receiving the grill plates (3).

In an embodiment of the disclosure, the grill plates (3) may be at least one of bimetallic strips, plates are connected in a crisscross configuration by with a bimetallic spring at the centre of two crisscrossing grill plates (7) [shown in Figure 7], a shutter member (4) connected by a bimetallic spring (7) for operating the grill assembly (100) for vehicle grill assembly (100) between the closed position (CP) and the open position (OP).

The plurality of grill plate members (3) are configured on the frame (1) to reside in a first position (FP) in normal operating condition of the vehicle. Each of the plurality of grill plate (3) are adapted to move to a second position (SP) from the first portion (FP) corresponding to variation of temperature in the vehicle body location corresponding to the grill assembly (2). At the first position (FP), the plurality of grill plate members (3) may maintain the grill assembly (100) in a substantially closed condition (CP), thereby restricting the airflow through vehicle front grill (2). In an embodiment, the term substantially closed condition used herein above and below refers to closed condition of the grill assembly with some amount of openness.

The plurality of bimetallic members (3) may include two metals of varying thermal expansion coefficient, bonded as a single entity. Thus, during variation of temperature, the two metals in the plurality of bimetallic members (3) expands at a different expansion rate and may form an arc shape. In an embodiment, the plurality of grill plate members (3) may be made of at least one of steel-brass, steel-copper and the like, which serves the purpose of varying thermal expansion of the plurality of bimetallic members (3) during variations in temperature. In an embodiment, the first position (FP) may be rest condition of the plurality of grill plate members (3) and the second position (SP) may be deflected condition of the plurality of grill plate members (3). In an embodiment, the plurality of grill plate members (3) may be a crisscross linkage, a bi-metallic spring or a plate, which serves the purpose of operating the grill assembly (100) between the closed position (CP) and the open position (OP).

Now referring to Figures 2a and 2b which are exemplary embodiments of the present disclosure illustrating a front view of the grill assembly (100) arranged with the shutter member (4). The shutter member (4) also referred as crisscross linkages are configured as grill plates in the grill assembly (100). The crisscross linkages comprise a pair of links in the crisscross configuration pivoted to the frame (1) and connected to each other at the centre by a bimetallic spring. Each end of the linkage may be slidably mounted in the frame (1). In an embodiment, guideway may be provided in the frame (1) for receiving the shutter member (4). In an embodiment, the shutter member (4) may include rollers at contact points [as shown in Figure 2b] to facilitate sliding movement of ends of the shutter member (4), during operation. Further, a plurality of bimetallic members (3) such as the bimetallic springs (7) are mounted at pivotal points of each pair of crisscross linkages, such that one end (7a) of the bimetallic spring (7) is connected to one linkage and the other end (7b) of the bimetallic member (3) is connected to the other linkage in each pair of linkages. This configuration of the plurality of bimetallic members (3) enables to operate the shutter member (4) between the first position (FP) and the second position (SP) by thermal expansion of the plurality of bimetallic members (3). In an embodiment, one end of the plurality of bimetallic members (3) may be fixed to the frame (1) and the other end may be connected to one of the linkages

Referring to figure 2a, in normal operating temperatures or at ambient temperature of the vehicle body (2), the bimetallic spring (7) may be in the first position (FP). Thus, the plurality the linkages may be held by the bimetallic spring (7) in closed position. The closed linkages may act as a barrier, thereby restricting air flow into the vehicle body (2). When the temperature of the vehicle body location corresponding to the grill assembly (2) increases, the plurality of bimetallic members (3) expands corresponding to the temperature of the vehicle body location corresponding to the grill assembly (2) from the first position (FP) to the second position (SP). Thus, operate the linkages to move apart from one another and hence, operating the grill assembly (100) from the closed condition (CP) to the open condition (OP). In the open condition (OP), the shutter member (4) includes sufficient openings or apertures for permitting air flow through the vehicle front grill (2) for circulation and cooling. Once, the temperature of the vehicle body location corresponding to the grill assembly (2) returns to ambient condition or normal condition or to a condition where ambient is low or the temperature around the grill assembly is low, the plurality of bimetallic members (3) may return from the second position (SP) to the first position (FP) and hence the shutter member (4), for restricting air flow through the vehicle front grill (2) and thus reducing the aerodynamic drag.

Figures 3a, 3b, and 5a is another exemplary embodiment of the present disclosure illustrating front view and side view of the grill assembly (100) configured with the plurality of bimetallic members (3) mounted to the frame (1). The plurality of bimetallic members (3) are configured such that one end of the plurality of bimetallic members (3) are fixed and the other end is free. In an embodiment, the plurality of bimetallic members (3) may be bi-metallic strips. In an embodiment, the plurality of bimetallic members (3) may have two ends such that one end of each of the plurality of bimetallic members (3) are fixed to side walls of the frame (1) and the other end is free [as shown in figures 3a and 5a].

During normal conditions or ambient temperature conditions or in a condition where ambient is low or the temperature around the grill assembly is low, the plurality of bimetallic members (3) are in first position (FP), and hence the grill assembly (100) may be in the closed condition (CP). Thus, air flow into the vehicle body (2) is restricted by the plurality of bimetallic members (3).

Referring to figures 3c, 3d, 5b and 5c when the temperature of the vehicle body location corresponding to the grill assembly (2) increases, the free ends of each of the plurality of bimetallic members (3) may deflect, thereby operating the plurality of bimetallic members (3) from the first position (FP) to the second position (SP) [shown in figure 3d and 5b]. Thus, the grill assembly (100) may be operated from the closed condition (CP) to the open condition (OP). In the open condition (OP), the plurality of bimetallic members (3) provides openings or apertures for permitting air flow through the vehicle front grill (2) for circulation and cooling.

Once, the temperature of the vehicle body location corresponding to the grill assembly (2) returns to ambient condition or normal operating conditions or to condition where ambient is low or the temperature around the grill assembly is low, the plurality of bimetallic members (3) may return from the second position (SP) to the first position (FP), for restricting air flow through the vehicle front grill (2).

Figures 4a and 4b are another alternate embodiment of the present disclosure, illustrating a front view of the grill assembly (100) configured with a plurality of shutter member (4) mounted on the frame (1). In an embodiment, the shutter member (4) may be a foldable fan, configured with two linkages pivoted to one another with a screen. The foldable fan may be connected to the plurality of bimetallic members (3) such as bimetallic spring (7) for operating between the foldable fan between a folded position and an un-folded position. The bimetallic spring (7) may be connected to each foldable fan such that one end (7a) of the bimetallic spring (7) is connected to one linkage and the other end (7b) of the bimetallic spring (7) is connected to the other linkage, to enable the foldable fan to be in folded condition [as shown in figure 4b] and in expanded condition. In the expanded condition, the foldable fan may form a circular shape or a sector of a circle, based on configuration. In an embodiment, one end (7a) of the plurality of bimetallic springs (7) may be fixed to the frame (1) and the other end (7b) may be connected to one of the foldable link.

In the normal operating condition or ambient temperature conditions or in a condition where ambient is low or the temperature around the grill assembly (100) is low, the bimetallic spring (7) connected to each of the shutter member (4) or the foldable fan may be in first position (FP), and hence the grill assembly (100) may be in the closed condition (CP). Thus, air flow through the vehicle front grill (2) is restricted by the shutter member (4). When the temperature of the vehicle body location corresponding to the grill assembly (2) increases, the bimetallic spring (7) may expand from the first position (FP) to the second position (SP), and thereby operating the shutter member or foldable fan to open condition by folding each of the links [shown in figure 4b]. Thus, the grill assembly (100) may be operated from the closed condition (CP) to the open condition (OP). In the open condition (OP), the shutter member (4) provide openings or apertures for permitting air flow through the vehicle front grill (2) for air passage through radiator-intercooler- condenser (heat exchanger) and resultant cooling. Once, the temperature of the vehicle body (2) returns to ambient or normal operating condition or to a condition where ambient is low or the temperature around the grill assembly is low, the plurality of bimetallic springs (7) may contract from the second position (SP) to the first position (FP), thereby expanding the linkage of the foldable fan. Thus, restricting air flow through the vehicle front grill (2).
Figure 6a are another alternate embodiment of the present disclosure, illustrating schematic top view of the vehicle roof with one or more roof scoop assembly (200). The roof scoop assembly (200) may be configured with the plurality of bimetallic members (3). The roof scoop assembly (200) may be mounted on a roof (6) of the vehicle, and is operable between an open condition (OP) and a closed position (CP), based on position of the plurality of bimetallic members (3). The location of the proposed roof scoop may be selected in such a way that it may be most favourable in terms of the buoyancy of the hot air rising making it aerodynamically most convenient for the hot air to escape out of the vehicle to prevent hot soak. The plurality of bimetallic members (3) are bimetallic strips, arranged in any conventional shape configured to form the roof scoop assembly (200). In an exemplary embodiment, the roof scoop assembly (200) may be configured in an octagonal shape, wherein end of each strip is fixed to the roof portion of the vehicle, and the other end of the strips may be configured to expand. In an embodiment, the plurality of bimetallic members (3) may be arranged in geometrical shapes such as but not limiting to rectangular, square, hexagonal or any other shapes as per the required configuration.

In the normal operating condition or ambient temperature conditions or in a condition where ambient is low or the temperature around the grill assembly is low, the bimetallic strips on the roof may be in first position (FP), and hence the roof scoop assembly (200) may be in the substantially closed condition (CP). Thus, air flow out of the vehicle body (2) may be restricted. When the temperature of the vehicle body location corresponding to the grill assembly (2) increases, the bimetallic strips may expand from the first position (FP) to the second position (SP), and thereby operating the roof scoop assembly (200) to the open condition by deformation of each of the strip at its free end [shown in figure 6b]. Thus, the roof scoop assembly (200) may be operated from the closed condition (CP) to the open condition (OP). In the open condition (OP), the bimetallic strips may form openings or apertures for permitting air flow out the vehicle body (2) and thus preventing hot soak. Once, the temperature of the vehicle body location corresponding to the grill assembly (2) returns to ambient or normal operating condition or to a condition where ambient is low or the temperature around the grill assembly is low, the bimetallic strips may contract from the second position (SP) to the first position (FP).
Advantages
The present disclosure provides a grill assembly, which is adaptive to temperature conditions of the vehicle body, for allowing air circulation into or out of the vehicle as maybe favourable for the vehicle.

The present disclosure provides a grill assembly, which may prevent aerodynamic drag forces acting on the vehicle, thereby improving performance of vehicle by aiding fuel economy of the vehicle.

The present disclosure provides a grill assembly, which when deployed on the vehicle in the form of roof scoop, will also prevent hot soak of the vehicle cabin thereby reducing the need for faster initial cabin cool down. Inherently, reducing the need for bigger AC system to achieve faster cool down and thus reduce the parasitic load of AC system on the vehicle engine and thus improve fuel economy.

The present disclosure provides a grill assembly, which is retrofittable, scalable, simple in design and cost-effective.

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

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

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

REFERRAL NUMERALS
REFERRAL NUMERALS DESCRIPTION
100 Grill assembly
1 Frame of a vehicle body
2 Vehicle body
3 Grill plates or Bimetallic members
4 Shutter member
5 Rollers
6 Roof scoop on the roof of the vehicle
7 Bimetallic spring
7a One end of bimetallic spring
7b Other end of the bimetallic spring
FP First position of the bimetallic members
SP Second position of the bimetallic members