DESC:FORM 2
The Patent Act 1970
(39 of 1970)
&
The Patent Rules, 2005

COMPLETE SPECIFICATION
(SEE SECTION 10 AND RULE 13)

TITLE OF THE INVENTION

“RADIATOR ASSEMBLY HAVING INTEGRATED DEGASSING TANK FOR A VEHICLE”

APPLICANTS:
Name Nationality Address
Mahindra & Mahindra Limited Indian Mahindra & Mahindra Ltd.,
MRV, Mahindra World City (MWC),
Plot No. 41/1, Anjur Post, Chengalpattu,
Kanchipuram District – 603004 (TN) INDIA

The following specification particularly describes and ascertains the nature of this invention and the manner in which it is to be performed:-

TECHNICAL FIELD
[001] The embodiments herein generally relate to engine cooling systems in vehicles and more particularly but not exclusively, to a de-aeration tank integrated with a down-flow type radiator in vehicles.

BACKGROUND
[002] Generally, an engine cooling system is used to keep an engine running at optimum temperature by extracting the heat produced by the engine. The engine cooling system is subjected to accumulation of air bubbles or vapours or other gases due to improper filling or local boiling during operation of a vehicle. The accumulation of air bubbles or vapours or other gases decreases cooling efficiency of the engine cooling system and also reduces life of a water pump. Hence, a degassing tank is used to remove entrapped gases/air from the engine cooling system. Further, the degassing tank allows thermal expansion of coolant from engine cooling system. A conventional degassing tank is assembled as a separate unit that is connected to the engine and a radiator of the vehicle. The aforementioned degassing tank occupies more space, requires various child parts resulting in high cost, higher assembly time due to assembly as a separate unit, higher de-aeration time due to separate packaging and longer connecting hoses. Further, the aforementioned degassing tank, decreases efficiency of the engine due to increased power consumption by the water pump and increases overall weight of the vehicle resulting in increased fuel consumption of the vehicle.
[003] Therefore, there exists a need for a radiator assembly for a vehicle that obviates the aforementioned drawbacks of the conventional assemblies.

OBJECTS
[004] The principal object of the embodiments of this invention is to provide a radiator assembly having an integrated degassing tank for a vehicle.
[005] Another object of the embodiments of this invention is to provide a radiator assembly that consumes less space and facilitates easier packaging.
[006] Yet, another object of the embodiments of the invention is to provide a self deaerating radiator assembly for the vehicle.
[007] These and other objects of the embodiments herein will be better appreciated and understood when considered in conjunction with the following description and the accompanying drawings. It should be understood, however, that the following descriptions, while indicating preferred embodiments and numerous specific details thereof, are given by way of illustration and not of limitation. Many changes and modifications may be made within the scope of the embodiments herein without departing from the spirit thereof, and the embodiments herein include all such modifications.

BRIEF DESCRIPTION OF FIGURES
[008] The embodiments are illustrated in the accompanying drawings, throughout which like reference letters indicate corresponding parts in the various figures. The embodiments herein will be better understood from the following description with reference to the drawings, in which:
[009] Fig. 1 depicts a perspective view of a radiator assembly, according to an embodiment of the invention as disclosed herein;
[0010] Fig. 2 depicts another view of Fig. 1, according to an embodiment of the invention as disclosed herein;
[0011] Fig. 3 depicts a top-sectional view of an expansion tank of the radiator assembly, according to an embodiment of the invention as disclosed herein; and
[0012] Fig. 4 depicts a side view of the radiator assembly, according to an embodiment of the invention as disclosed herein.

DETAILED DESCRIPTION OF INVENTION
[0013] The embodiments herein and the various features and advantageous details thereof are explained more fully with reference to the non-limiting embodiments that are illustrated in the accompanying drawings and detailed in the following description. Descriptions of well-known components and processing techniques are omitted so as to not unnecessarily obscure the embodiments herein. The examples used herein are intended merely to facilitate an understanding of ways in which the embodiments herein may be practiced and to further enable those of skill in the art to practice the embodiments herein. Accordingly, the examples should not be construed as limiting the scope of the embodiments herein.
[0014] The embodiments herein achieve a radiator assembly having an integrated degassing tank for a vehicle. Further, embodiments herein achieve a radiator assembly that consumes less space and facilitates easier packaging. Referring now to the drawings, and more particularly to FIGS. 1 through 4, where similar reference characters denote corresponding features consistently throughout the figures, there are shown embodiments.
[0015] Fig. 1 depicts a perspective view of the radiator assembly 100, according to an embodiment of the invention as disclosed herein. Fig.2 depicts another view of Fig. 1, according to an embodiment of the invention as disclosed herein. Fig. 3 depicts a top-sectional view of an expansion tank 110 of the radiator assembly 100, according to an embodiment of the invention as disclosed herein and Fig. 4 depicts a side view of the radiator assembly 100, according to an embodiment of the invention as disclosed herein.
[0016] In an embodiment, the radiator assembly 100 includes a core 102, a top tank 104, a bottom tank 106, a reservoir tank 108, an expansion tank 110, a filler neck 112, a pressure cap 114 and a connecting hose 116.
[0017] The top tank 104 is disposed above the core 102 of the radiator assembly 100. The top tank 104 includes at least one inlet channel 104a provided in fluid communication with a cylinder head (not shown) of an engine (not shown). In an embodiment, the top tank 104 is made from an opaque material. However, it is also within the scope of the invention to provide the top tank 104 with any other material without otherwise deterring the intended function of the top tank 104 as can be deduced from the description.
[0018] The bottom tank 106 is disposed below the core 102 of the radiator assembly 100. The bottom tank 106 includes at least one outlet channel 106a provided in fluid communication with a cylinder block (not shown) of the engine (not shown).
[0019] In an embodiment, the reservoir tank 108 is disposed above the top tank 104 of the radiator assembly 100. In an embodiment, the reservoir tank 108 is used to store excess coolant in event of coolant loss. In an embodiment, reservoir tank 108 of the radiator assembly 100 has maximum and minimum level markings (not shown) to monitor the level of coolant.
[0020] The expansion tank 110 is disposed above the reservoir tank 108 of the radiator assembly 100. In an embodiment, the expansion tank 110 is used to accommodate coolant expansion. In an embodiment, the expansion tank 110 includes at least one baffle 110a, at least one inlet vent channel 110b and at least one outlet vent channel 110c. In an embodiment, the baffle plate 110a of the expansion tank 110 is used for deaeration i.e., to remove entrapped air or vapour from coolant of an engine cooling system (not shown). However, it is also within the scope of the invention to provide the expansion tank 110 with more than one baffle to remove entrapped air or vapour without otherwise deterring the intended function of the baffle 110a of the expansion tank 110 as can be deduced from the description. Further, in an embodiment, the baffle plate 110a of the expansion tank 110 defines a plurality of openings 110o (as shown in fig. 3) to support deaeration. In an embodiment, the inlet vent channel 110b of the expansion tank 110 is provided in fluid communication with the cylinder head (not shown) of the engine (not shown). In an embodiment, the inlet vent channel 110b of the expansion tank 110 is used to receive at least one of combustion by- products and coolant air mixture from the engine (not shown). In an embodiment, the outlet vent channel 110c of the expansion tank 110 is provided in fluid communication with the filler neck 112.
[0021] In an embodiment, the filler neck 112 is configured to extend from the reservoir tank 108 of the radiator assembly 100. The filler neck 112 receives the pressure cap 114. However, it is also within the scope of the invention to provide the filler neck 112 on the expansion tank 110 to receive the pressure cap 114 without otherwise deterring the intended function of the filler neck 112 and pressure cap 114 as can be deduced from the description. In an embodiment, the filler neck 112 is located substantially below the expansion tank 110 to avoid coolant filling in expansion tank 110 in event of manual filling.
[0022] In an embodiment, the pressure cap 114 is used to regulate the pressure of the radiator assembly 100. Further, in an embodiment, the pressure cap 114 is configured to vent at least one of combustion gases and air to surrounding at desired pressure.
[0023] In an embodiment, the connecting hose 118 is used to connect the expansion tank 110 with the filler neck 112.
[0024] In an embodiment, the radiator assembly 100 is a down-flow radiator. Further, in an embodiment, the radiator assembly 100 self deaerate the engine cooling system (not shown) in less than 10 minutes.
[0025] The working of the radiator 100 is as follows. During the operation of engine (not shown), the inlet vent channel 110b of the expansion tank 110 receives combustion by products of the engine (not shown) to collide with the baffle 110a and is then transferred to filler neck 112 via outlet vent channel 110c. As and when the desired pressure is reached, the pressure cap 116 vents the gases to the surroundings. In the meanwhile, the inlet channel 104a of the top tank 104 of the radiator assembly 100 receives thermally expanded coolant from the cylinder head (not shown) of the engine (not shown). The expansion tank 110 accommodates the coolant expansion and the reservoir tank 108 stores excess coolant. The entrapped air or gases in the coolant as usual rises up and reaches the filler neck 112 to be vented to the surroundings as and when the desired pressure is reached.
[0026] The foregoing description of the specific embodiments will so fully reveal the general nature of the embodiments herein that others can, by applying current knowledge, readily modify and/or adapt for various applications such specific embodiments without departing from the generic concept, and, therefore, such adaptations and modifications should and are intended to be comprehended within the meaning and range of equivalents of the disclosed embodiments. It is to be understood that the phraseology or terminology employed herein is for the purpose of description and not of limitation. Therefore, while the embodiments herein have been described in terms of preferred embodiments, those skilled in the art will recognize that the embodiments herein can be practiced with modification within the spirit and scope of the embodiments as described herein.

CLAIMS
We claim,
1. A radiator assembly for a vehicle, said radiator assembly comprising;
a core;
a top tank disposed above said core;
a bottom tank disposed below said core;
a reservoir tank disposed above said top tank;
a filler neck configured to extend from said reservoir tank;
an expansion tank disposed above said reservoir tank, said expansion tank having at least one baffle adapted to facilitate de-aeration; and
a pressure cap disposed to said filler neck,
wherein
said expansion tank is adapted to accommodate coolant expansion;
said reservoir tank is adapted to store excess coolant; and
said pressure cap is adapted to regulate pressure of said radiator assembly.
2. The radiator assembly as claimed in claim 1, wherein said expansion tank defines at least one inlet vent channel adapted to be provided in fluid communication with a cylinder head of an engine.
3. The radiator assembly as claimed in claim 1, wherein said expansion tank defines at least one outlet vent channel adapted to be provided in fluid communication with said filler neck.
4. The radiator assembly as claimed in claim 1, wherein said top tank defines at least one inlet channel adapted to be provided in fluid communication with a cylinder head of an engine.
5. The radiator assembly as claimed in claim 1, wherein said bottom tank defines at least one outlet channel adapted to be provided in fluid communication with a cylinder block of an engine.
6. The radiator assembly as claimed in claim 1, further comprising a connecting hose adapted to connect said expansion tank with said filler neck.
7. The radiator assembly as claimed in claim 1, wherein said baffle of said expansion tank defines a plurality of openings adapted to support deaeration.
8. The radiator assembly as claimed in claim 1, wherein said pressure cap is configured to vent at least one of combustion gases and air to surroundings at desired pressure.
9. The radiator assembly as claimed in claim 1, wherein said reservoir tank defines maximum and minimum level markings to monitor the level of coolant.
10. A vehicle comprising a radiator for deaeration, said radiator comprising:
a core; a top tank disposed above said core; a bottom tank disposed below said core; a reservoir tank disposed above said top tank; a filler neck configured to extend from said reservoir tank; an expansion tank disposed above said reservoir tank, said expansion tank having at least one baffle adapted to facilitate de-aeration; and a pressure cap disposed to said filler neck, wherein said expansion tank is adapted to accommodate coolant expansion; said reservoir tank is adapted to store excess coolant; and said pressure cap is adapted to regulate pressure of said radiator.

Date: 29th January ,2016 Signature:
Dr.Kalyan Chakravarthy

ABSTRACT
Radiator assembly having integrated degassing tank for a vehicle includes a core, a top tank, a bottom tank, a reservoir tank, an expansion tank, a filler neck, a pressure cap and a connecting hose. The expansion tank is used to accommodate coolant expansion. The radiator assembly is used to deaerate the coolant of an engine cooling system.
FIG. 1
,CLAIMS: CLAIMS
We claim,
1. A radiator assembly for a vehicle, said radiator assembly comprising;
a core;
a top tank disposed above said core;
a bottom tank disposed below said core;
a reservoir tank disposed above said top tank;
a filler neck configured to extend from said reservoir tank;
an expansion tank disposed above said reservoir tank, said expansion tank having at least one baffle adapted to facilitate de-aeration; and
a pressure cap disposed to said filler neck,
wherein
said expansion tank is adapted to accommodate coolant expansion;
said reservoir tank is adapted to store excess coolant; and
said pressure cap is adapted to regulate pressure of said radiator assembly.
2. The radiator assembly as claimed in claim 1, wherein said expansion tank defines at least one inlet vent channel adapted to be provided in fluid communication with a cylinder head of an engine.
3. The radiator assembly as claimed in claim 1, wherein said expansion tank defines at least one outlet vent channel adapted to be provided in fluid communication with said filler neck.
4. The radiator assembly as claimed in claim 1, wherein said top tank defines at least one inlet channel adapted to be provided in fluid communication with a cylinder head of an engine.
5. The radiator assembly as claimed in claim 1, wherein said bottom tank defines at least one outlet channel adapted to be provided in fluid communication with a cylinder block of an engine.
6. The radiator assembly as claimed in claim 1, further comprising a connecting hose adapted to connect said expansion tank with said filler neck.
7. The radiator assembly as claimed in claim 1, wherein said baffle of said expansion tank defines a plurality of openings adapted to support deaeration.
8. The radiator assembly as claimed in claim 1, wherein said pressure cap is configured to vent at least one of combustion gases and air to surroundings at desired pressure.
9. The radiator assembly as claimed in claim 1, wherein said reservoir tank defines maximum and minimum level markings to monitor the level of coolant.
10. A vehicle comprising a radiator for deaeration, said radiator comprising:
a core; a top tank disposed above said core; a bottom tank disposed below said core; a reservoir tank disposed above said top tank; a filler neck configured to extend from said reservoir tank; an expansion tank disposed above said reservoir tank, said expansion tank having at least one baffle adapted to facilitate de-aeration; and a pressure cap disposed to said filler neck, wherein said expansion tank is adapted to accommodate coolant expansion; said reservoir tank is adapted to store excess coolant; and said pressure cap is adapted to regulate pressure of said radiator.