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"De Aeration Tank (Dat) For Engine Cooling System Of Internal Combustion Engines"
Patent Information
Abstract
Abstract: The present invention provides a de-aeration tank assembly for a radiator. The de-aeration tank assembly includes a de-aeration tank acting as a reservoir for a coolant. Further, the assembly includes a filler neck configured on the de-aeration tank for pouring the coolant therein. Furthermore, the assembly includes a pressure cap having threading provided on inner side thereof for fitting on the filler neck. Moreover, the assembly includes a first vent hose connecting the de-aeration tank to a radiator outlet vent by means of a clip and a second vent hose connecting an engine to de-aeration tank vent. Characteristic feature of the present invention is that the de-aeration tank assembly is a single unit made of plastic having capacity of 6 liters.
Applicants
1. TATA TOYO RADIATOR LTD
Inventors
1. VISHAL SUDHAKAR NANDGIRI
2. PRAVIN GURUDAS DHANDE
3. RAJIV HANMANT KULKARNI
Eregister
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Documents
Orders
| Application Number | Applicant | Section | Controller | Decision Date | |
|---|---|---|---|---|---|
| 1715/MUM/2011 |
Application Documents
| Name | Date | |
|---|---|---|
| 1 | 1715-MUM-2011-IntimationOfGrant24-03-2020.pdf | 2020-03-24 |
| 2 | 1715-MUM-2011-PatentCertificate24-03-2020.pdf | 2020-03-24 |
| 3 | 1715-MUM-2011-ORIGINAL UR 6(1A) FORM 26-120320.pdf | 2020-03-14 |
| 4 | 1715-mum-2011-Annexure [06-03-2020(online)]-1.pdf | 2020-03-06 |
| 5 | 1715-mum-2011-Annexure [06-03-2020(online)].pdf | 2020-03-06 |
| 6 | 1715-mum-2011-Correspondence to notify the Controller [06-03-2020(online)].pdf | 2020-03-06 |
| 7 | 1715-MUM-2011-FORM-26 [06-03-2020(online)].pdf | 2020-03-06 |
| 8 | 1715-mum-2011-Response to office action [06-03-2020(online)].pdf | 2020-03-06 |
| 9 | 1715-MUM-2011-Correspondence to notify the Controller [03-03-2020(online)].pdf | 2020-03-03 |
| 10 | 1715-MUM-2011-HearingNoticeLetter-(DateOfHearing-06-03-2020).pdf | 2020-02-07 |
| 11 | 1715-MUM-2011-ABSTRACT [26-09-2018(online)].pdf | 2018-09-26 |
| 12 | 1715-MUM-2011-CLAIMS [26-09-2018(online)].pdf | 2018-09-26 |
| 13 | 1715-MUM-2011-COMPLETE SPECIFICATION [26-09-2018(online)].pdf | 2018-09-26 |
| 14 | 1715-MUM-2011-CORRESPONDENCE [26-09-2018(online)].pdf | 2018-09-26 |
| 15 | 1715-MUM-2011-FER_SER_REPLY [26-09-2018(online)].pdf | 2018-09-26 |
| 16 | 1715-MUM-2011-OTHERS [26-09-2018(online)].pdf | 2018-09-26 |
| 17 | 1715-MUM-2011--FORM 3(17-6-2011).pdf | 2018-08-10 |
| 18 | 1715-mum-2011-abstract.pdf | 2018-08-10 |
| 19 | 1715-mum-2011-claims.pdf | 2018-08-10 |
| 20 | 1715-mum-2011-correspondence.pdf | 2018-08-10 |
| 21 | 1715-mum-2011-description(complete).pdf | 2018-08-10 |
| 22 | 1715-mum-2011-drawing.pdf | 2018-08-10 |
| 23 | 1715-MUM-2011-FER.pdf | 2018-08-10 |
| 24 | 1715-mum-2011-form 1.pdf | 2018-08-10 |
| 25 | 1715-MUM-2011-FORM 18(25-7-2012).pdf | 2018-08-10 |
| 26 | 1715-mum-2011-form 2(title page).pdf | 2018-08-10 |
| 27 | 1715-mum-2011-form 2.pdf | 2018-08-10 |
| 28 | 1715-MUM-2011-FORM 5(17-6-2011).pdf | 2018-08-10 |
| 29 | 1715-MUM-2011-FORM 9(17-5-2012).pdf | 2018-08-10 |
| 30 | 1715-mum-2011-power of authority.pdf | 2018-08-10 |
| 31 | ABSTRACT1.jpg | 2018-08-10 |
Search Strategy
| 1 | NewMicrosoftOfficeWordDocument(2)_14-08-2017.pdf |
Specification
FORM 2
THE PATENT ACT 1970
&
The Patents Rules, 2003
COMPLETE SPECIFICATION (See section 10 and rule 13)
1. TITLE OF THE INVENTION:
"De-Aeration Tank (DAT) for Engine Cooling System of Internal
Combustion Engines"
2. APPLICANT*.
(a) NAME: TATA TOYO Radiator Ltd.
(b) NATIONALITY: Indian Company registered under
the provisions of the Companies Act, 1956
(c) ADDRESS: Survey No. 235/245, Hinjewadi,
Taluka - Mulshi, Pune-411027
3. PREAMBLE TO THE DESCRIPTION:
PROVISIONAL COMPLETE
The following specification describes the The following specification
invention. particularly describes the invention and
the manner in which it is to be
performed.
De-Aeration Tank (DAT) for Engine Coofing System of Internal Combustion
Engines
Field of invention
The present invention relates to the de-aerating mechanism in engine cooling systems of internal combustion engines, and more specifically, the present invention relates to the engine cooling system de-aeration, using a tank of capacity 6 liters and less.
Background of the invention
Internal combustion (IC) engine requires a cooling system to maintain the temperature of an engine jacket. The cooling system consists of the engine jacket, hoses, a radiator, a de-aeration tank and a pressure Cap. The radiator is an assembly of tubes, between two tanks which carries liquid to be cooled. Specifically, extended surfaces on outer side of tubes, known as fins, together with air flow drawn over the radiator assembly enhances the rate of transfer of heat to a considerable extent.
One of the factors which reduce the efficiency of the cooling system, by adversely affecting the engine coolant flow, is the presence of entrapped air and water vapour in the cooling system which eventually affects life of the engine: Various systems to de-aerate the cooling system are already in place, and the above problems have been overcome with varying degrees of success. Specifically, one of these systems employs a tank, which forms a part of the cooling circuit. The tank provides physical space to accommodate changes in fluid volume due to temperature variations, which acts as a reservoir for the coolant. The tank further act as a means
for filling coolant into the radiator system, and serves to separate the entrapped air from the coolant.
Conventionally, for Heavy Commercial Vehicles (HCV) with engine capacity above 125 HP, the cooling system with the de-aeration tank (DAT) capacity of more than 6 liters is used. This is used for the function of de-aeration of cooling system. Such tanks are made through injection molding procedure, constructed in 2 halves and then welded together.
However, due to heavy capacity of the DAT, there are many failures in the field due to welded joints and fatigue failure due to road vihration. Further, excess capacity of the DAT more than requirement leads to use of excess coolant in the system.
Disadvantages of the prior art
1. Welding of plastic parts of the conventional DA'r is prone to failure, as welding is highly sensitive to the process control.
2. Higher capacity of the DAT used in conventional process leads to early failure in the field due to fatigue loading.
3. Higher capacity of the DAT than required leads to excess use of coolant than the requirement. This increases the thermal inertia of the cooling system and increases warm up which also leads to increase in the cold emissions.
4. Coolant system optimization is required while meeting the de-aeration norms
Accordingly, there exists a need to provide a lower capacity DAT which overcomes
the drawbacks of the prior art.
Object of invention
An object of the present invention is to develop optimized de-aeration system for the IC engine to reduce warranty.
Another object of present invention is to provide durable, compact de-aeration system which offers cost saving to end user.
Summary of the invention
Accordingly, the present invention provides a de-aeration tank assembly for a radiator, the de-aeration tank assembly comprising:
a de-aeration tank acting as a reservoir for a coolant;
a filler neck configured on the de-aeration tank for pouring the coolant to the de-aeration tank;
a pressure cap having threading provided on inner side thereof for fitting on the filler neck;
a first vent hose connecting the de-aeration tank to a radiator outlet vent by means of a clip; and
a second vent hose connecting an engine to de-aeration tank vent, characterized in that the de-aeration tank assembly is a single unit made of plastic having capacity of 6 liters.
Typically, wherein the deareation tank is manufactured by blow molding process.
Brief description of the drawings
Figure 1 shows an assembled view of a de-aeration tank assembly in accordance with the present invention;
Figure 2 shows an exploded view of the de-aeration tank assembly of figure 1 in accordance with the present invention;
Figure 3 shows functional block diagram of the de-aeration tank assembly assembled on a radiator in accordance with the present invention.
Detailed description of invention
The foregoing objects of the present invention are accomplished and the problems and shortcomings associated with the prior art, techniques and approaches are overcome by the present invention as described below in the preferred embodiment.
Accordingly, the present invention provides a de-aeration tank assembly which provides optimized de-aeration system for the IC engine to reduce warranty. Further, the de-aeration tank assembly offers a most competitive price to customer with a durable and compact design.
This present invention is illustrated with reference to the accompanying drawings, throughout which reference numbers indicate corresponding parts in the various figures. These reference numbers are shown in bracket in the following description
Referring now to figure 1 and 2 there is shown a de-aeration tank assembly for a radiator, in accordance with the present invention. Specifically, figure 1 and 2 shows the de-aeration tank assembly (100). The de-aeration tank assembly includes a de-aeration tank (10) (hereinafter "DAT (10)"), a filler neck (20), a pressure cap (30), a first vent (40) and a second vent (50).
Specifically, the DAT (10) acts as a reservoir for a coolant and the coolant from the DAT (10) flows to a radiator inlet (not shown) through a fill pipe filling entire core area of the radiator. More specifically, the DAT (10) is manufactured by blow molding process as a single unit.
Further, the filler neck (20) is configured on the DAT (10) for pouring the coolant therein. Specifically, the filler neck (20) is manufactured in injection molding in which threads are provided on the outer periphery of the filler neck (20) and insert welded to the DAT (10). More specifically, the coolant is poured through the filler neck (20) which circulates through a radiator outlet pipe through hose to the engine and whole system is filled with coolant up to the maximum level of the DAT (10).
Furthermore, the pressure cap (30) having threading provided on inner side thereof for fitment on the filler neck (20). Moreover, the first vent hose (40) connects the DAT (10) to a radiator outlet vent (not shown) by means of a clip (42) and the second vent hose (50) connects an engine to a DAT vent. In an embodiment, the first vent hose (40) and the second vent hose (50) are manufactured by vulcanization process and the clip (42) is manufactured by cold drawn process using spring steel material.
The improvement to the de-aeration tank assembly (100) is that the de-aeration tank assembly is made of plastic having capacity of 6 liters.
Referring now to figure 3, there is shown a functional block diagram (1000) of the de-aeration tank assembly assembled on a radiator in accordance with the present invention. Specifically, figure 3 shows the de-aeration tank assembly (100) assembled on the radiator (200) and an engine (300).
The present invention leads to same functionality and performance as those of present 9.5 litre DAT such as to replenish coolant to the radiator in case of leakages, i.e. it act as reservoir tank, to provide expansion space for coolant due to heating, preventing loss of coolant to atmosphere, to remove air entrapped in the cooling system i.e. de-aeration and the like.
Advantages of present invention
1. The compact design of 6 litre capacity DAT provides an optimized coolant capacity, without compromising cooling system norms.
2. The fill pipe location and diameter in the present invention is designed in such a way that it maintains the necessary fill rate of the cooling system.
3. The present invention provides an integral design which eliminates the chance of leakages existing in welding constructed tanks of the prior art.
4. Use of threaded pressure cap design in the present invention ensures long life of the DAT as against the cam type pressure cap due to no wear of surfaces.
5. Reduced coolant volume in the DAT according to the present invention reduces the thermal inertia and helps in improving cold start emissions.
6. Reduced coolant volume in the DAT according to the present invention reduces the cost to customer.
7. This also reduces the weight and thereby increases the fatigue life due to reduced loading.
We claim
1. A de-aeration tank assembly for a radiator, the de-aeration tank
assembly comprising:
a de-aeration tank acting as a reservoir for a coolant;
a filler neck configured on the de-aeration tank for pouring the coolant to the de-aeration tank:
a pressure cap having threading provided on inner side thereof for fitting on the filler neck;
a first vent hose connecting the de-aeration tank to a radiator outlet vent by means of a clip; and
a second vent hose connecting an engine to de-aeration tank vent, characterized in that the de-aeration tank assembly is a single unit made of plastic having capacity of 6 liters.
2. The de-aeration tank assembly of claim 1, wherein the de-aeration tank
is manufactured by a blow molding process.