The present disclosure relates to the field of cooling systems for automobile engines.
BACKGROUND
The background information herein below relates to the present disclosure but is not necessarily prior art.
Typically, a radiator cap is used for closing the opening of a radiator. The radiator cap keeps the cooling system of the engine sealed from outside contaminants and maintains a pressure on the cooling system higher than atmospheric pressure. The increased pressure raises the boiling point of engine coolant which can be water or any synthetic fluid. The radiator cap is configured to allow the coolant to go to a coolant reservoir when the coolant gets hot and when the pressure increases. The radiator cap also allows the coolant to flow back into the radiator as vacuum gets created once the engine cools down.
Conventional radiator caps available in the market are mechanically operated and include two valves and two springs. Various components of the conventional radiator cap get deteriorated due to heat and chemical reaction with coolant. Further, these radiator caps remain partially open when the pressure in the radiator tank is less than an upper threshold limit. This results in a constant leakage of the coolant which results in reduced efficiency of the cooling system. An imprecise control of pressure-release may lead to pressure rise above a limiting-pressure resulting in leakages at clamps and hoses. A complex mechanical system with two springs and two valves may reduce functionality because of the ageing of components. Improper tightening of the cap may lead to coolant loss due to leakage.
There is, therefore, felt a need of a radiator cap that alleviates the above mentioned drawbacks.

OBJECTS
Some of the objects of the present disclosure, which at least one embodiment herein satisfies, are as follows:
An object of the present disclosure is to provide a radiator cap that is precisely controlled.
Another object of the present disclosure is to provide a radiator cap that prevents leakage of the coolant.
Yet another object of the present disclosure is to provide a radiator cap that is simple in construction.
Other objects and advantages of the present disclosure will be more apparent from the following description, which is not intended to limit the scope of the present disclosure.
SUMMARY
The present disclosure envisages a cooling system for an engine. The cooling system comprises a radiator body, a coolant reservoir, a radiator cap provided on the radiator body and operatively disposed in a fluid path between the radiator body and the coolant reservoir, a sensor located inside the inner space of the radiator body, a solenoid actuated valve integrated in the radiator cap.
The valve is configured to control the flow of coolant between the radiator body and the reservoir in response to the signal received from the sensor.
The valve is configured to remain in a closed configuration when the pressure inside the radiator body is within a predetermined range and to remain in an opened configuration when the pressure inside the radiator body is outside the predetermined range.

The valve includes a compression spring, a solenoid operated plunger, and a pressure plate connected to the plunger. The pressure plate in combination with a rubber seal reciprocates inside the radiator cap and is configured to seal a second passage in radiator neck when no signal is received from the sensor.
In an embodiment, the sensor is a pressure sensor.
In another embodiment, the sensor is a temperature sensor.
In yet another embodiment, an electronic control unit (ECU) is configured to control the operation of the valve.
BRIEF DESCRIPTION OF ACCOMPANYING DRAWING
The cooling system for an engine of the present disclosure will now be described with the help of the accompanying drawing, in which:
Figure 1 shows a cooling system for an engine, in accordance with an embodiment of the present disclosure;
Figure 2 shows a solenoid actuated valve mounted on a radiator body, in accordance with an embodiment of the present disclosure;
Figure 3 shows the solenoid valve in a closed configuration; and
Figure 4 shows the solenoid valve in an open configuration.
LIST OF REFERENCE NUMERALS USED IN DETAILED DESCRIPTION AND DRAWING
100 - Cooling system
105 - Radiator body
105a - Radiator top-tank

110 -Radiator cap
115 - Compression spring
130 - Solenoid actuated valve
130a- Solenoid coil
130b-Plunger
130c - Pressure plate
130d-Rubber seal
135 - Coolant reservoir
140-Valve-seat
150 - Sensor
155a-First port
155b - Second port
165 - Electronic-control-unit (ECU)
DETAILED DESCRIPTION
Embodiments, of the present disclosure, will now be described with reference to the accompanying drawing.
Embodiments are provided so as to thoroughly and fully convey the scope of the present disclosure to the person skilled in the art. Numerous details are set forth, relating to specific components, and methods, to provide a complete understanding of embodiments of the present disclosure. It will be apparent to the person skilled in the art that the details provided in the embodiments should not be construed to limit the scope of the present disclosure. In some embodiments,

well-known processes, well-known apparatus structures, and well-known techniques are not described in detail.
The terminology used, in the present disclosure, is only for the purpose of
explaining a particular embodiment and such terminology shall not be considered
5 to limit the scope of the present disclosure. As used in the present disclosure, the
forms "a,” "an," and "the" may be intended to include the plural forms as well,
unless the context clearly suggests otherwise. The terms "comprises,"
"comprising," “including,” and “having,” are open ended transitional phrases and
therefore specify the presence of stated features, elements, modules, units and/or
10 components, but do not forbid the presence or addition of one or more other
features, elements, components, and/or groups thereof.
When an element is referred to as being "mounted on," “engaged to,” "connected
to," or "coupled to" another element, it may be directly on, engaged, connected or
coupled to the other element. As used herein, the term "and/or" includes any and
15 all combinations of one or more of the associated listed elements.
The terms first, second, third, etc., should not be construed to limit the scope of
the present disclosure as the aforementioned terms may be only used to
distinguish one element, component, or region from another component, region.
Terms such as first, second, third etc., when used herein do not imply a specific
20 sequence or order unless clearly suggested by the present disclosure.
Terms such as “inner,” “outer,” "beneath," "below," "lower," "above," "upper," and the like, may be used in the present disclosure to describe relationships between different elements as depicted from the figures.
A cooling system for an engine comprising a radiator assembly is now described
25 with the help of Figure 1 through Figure 4.
In accordance with an embodiment of the present disclosure, the cooling system 100 comprises a radiator body 105, a radiator cap 110, a coolant reservoir 135, and a solenoid actuated valve 130. The radiator body 105 is in fluid
6

communication with the coolant reservoir 135 via a first port 155a and a second port 155b provided in the neck portion.
The solenoid actuated valve 130 comprises a solenoid coil 130a, a plunger 130b,
and a pressure plate 130c connected to an operative bottom portion of the plunger
5 130b. A rubber seal 130d is provided on an operative bottom side of the pressure
plate 130c. The valve 130 is held in a normally closed configuration by a compression spring 115.
A valve-seat 140 is provided in the second port 155b of the neck portion of the radiator body 105. In a closed configuration of the valve 130, the valve-seat 140
10 is configured to receive the pressure plate 130c in order to close the fluid path
between the radiator body 105 and the coolant reservoir 135. At least one sensor 150 is located inside the radiator body 105. The sensor 150 is configured to sense the pressure inside the radiator body 105 or the temperature of coolant inside the radiator body 105. An electrical or electronic signal is generated by the sensor
15 150, corresponding to the pressure inside the radiator body 105.
In an embodiment, the sensor 150 is located inside a radiator top-tank 105a. The
sensor 150 is a pressure sensor or a temperature sensor. In another embodiment,
the sensor 150 is mounted on the outside of the radiator body 105 and a fluid
communication between the sensor 150 and the radiator body 105 is established
20 via a pipe.
In another embodiment, threads are provided on the radiator cap 110 to facilitate fastening of the radiator cap 110 to the neck portion of the radiator body 105. This construction avoids any possible leakage due to misalignment during fitment.
25 In yet another embodiment, the sensor 150 is attached to the inner surface of the
radiator top-tank 105a. The solenoid actuated valve 130 is configured to operate in response to the signal received from the sensor 150.
7

The valve 130 is normally held in a closed configuration when no activation signal is received from the sensor 150 or an electronic control unit (ECU) 165 of the vehicle. Figure 3 shows the solenoid valve in a closed configuration.
The valve 130 is configured to remain in a closed configuration when the
5 pressure inside the radiator body 105 is within a predetermined range and to
remain in an opened configuration when the pressure inside the radiator body 105 is outside the predetermined range. The predetermined range includes the pressure values between the lower limit L1 and the upper limit L2, excluding both the values L1 and L2.
10 The valve 130 is configured to open when the pressure inside the radiator body
105 or the radiator top-tank 105a increases to an upper pressure limit (L2) or falls to a lower pressure limit (L1). In case the pressure reaches the upper limit or beyond the upper limit (L2), an activation signal is sent to the solenoid coil 130a of the valve 130, which then retracts/operates the plunger 130b to open the
15 second port. The valve 130 in its open configuration allows the passage of hot
and pressurized coolant from the radiator body 105 to the coolant reservoir 135. Thus, the pressure in the cooling system 100 is maintained within safe limits. This eliminates leakages at clamps and from hoses. The life of other sensitive components of the cooling system is also increased.
20 When the pressure inside the radiator body 105 reaches the lower limit (L1), an
activation signal from the sensor 150 or the ECU 165 is sent to the solenoid coil of the valve 130 and the valve 130 switches to the open configuration. Figure 4 shows the solenoid actuated valve 130 in an open configuration. Due to the reduced pressure inside the radiator body 105 the coolant from the coolant
25 reservoir 135 flows to the radiator body 105 to maintain adequate coolant level in
the cooling system.
The implementation of the solenoid actuated valve 130 in combination with the sensor 150 facilitates a precise control of the opening and closing of the fluid
8

path between the radiator body 105 and reservoir 135. The fluid path is either completely open or completely closed and the leakage of coolant fluid due to partial opening or due to excessive pressure rise in the radiator body 105, as in conventional caps is avoided. The normal of components is reduced, which 5 increases the reliability of the cooling system.
The upper and lower pressure limits vary according to the type of coolant, capacity and power of engine, and other factor.
The foregoing description of the embodiments has been provided for purposes of illustration and not intended to limit the scope of the present disclosure. 10 Individual components of a particular embodiment are generally not limited to that particular embodiment, but, are interchangeable. Such variations are not to be regarded as a departure from the present disclosure, and all such modifications are considered to be within the scope of the present disclosure.
TECHNICAL ADVANCES AND ECONOMICAL SIGNIFICANCE
15 The present disclosure described herein above has several technical advantages including, but not limited to, the realization of a cooling system that:
• can be incorporated in existing cooling systems;
• increases the life of components of the cooling system; and
• reduces the leakage of coolant.
20 The foregoing description of the specific embodiments so fully reveals 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
25 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
9

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.
Throughout this specification the word "comprise", or variations such as "comprises" or "comprising", will be understood to imply the inclusion of a stated element, or group of elements, but not the exclusion of any other element, or step, or group of elements.
The use of the expression "at least" or "at least one" suggests the use of one or more elements or ingredients or quantities, as the use may be in the embodiment of the disclosure to achieve one or more of the desired objects or results.
While considerable emphasis has been placed herein on the components and component parts of the preferred embodiments, it will be appreciated that many embodiments can be made and that many changes can be made in the preferred embodiments without departing from the principles of the disclosure. These and other changes in the preferred embodiment as well as other embodiments of the disclosure will be apparent to those skilled in the art from the disclosure herein, whereby it is to be distinctly understood that the foregoing descriptive matter is to be interpreted merely as illustrative of the disclosure and not as a limitation.

WE CLAIM:

A cooling system (100) for an engine, said cooling system (100) comprising:
• a radiator body (105);
• a coolant reservoir (135);
• a radiator cap (110) provided on said radiator body (105) and operatively disposed in a fluid path between said radiator body (105) and said coolant reservoir (135);
• a sensor (150) located inside the inner space of said radiator body (105); and
• a solenoid actuated valve (130) integrated in said radiator cap (110), wherein
said valve (130) is configured to control the flow of coolant between said radiator body (105) and said coolant reservoir (135) in response to the signal received from said sensor (150).
The cooling system (100) as claimed in claim 1, wherein said valve (130) is configured to remain in a closed configuration when the pressure inside said radiator body (105) is within a predetermined range and to remain in an opened configuration when the pressure inside said radiator body (105) is outside said predetermined range.
The cooling system (100) as claimed in claim 1, said valve (130) includes:
• a solenoid operated plunger (130b);
• a compression spring (115) for pressing said plunger (130b) towards valve-seat (140); and
• a pressure plate (130c) connected to said plunger (130b), wherein said pressure plate (130c) in combination with a rubber seal (130d) attached thereon, reciprocates inside said radiator cap (110)

and is configured to seal a second port (155b) in radiator neck portion, when no signal is received from said sensor (150).
The cooling system (100) as claimed in claim 1, wherein said sensor (150) is a pressure sensor.
The cooling system (100) as claimed in claim 1, wherein said sensor (150) is a temperature sensor.
The cooling system (100) as claimed in claim 1, includes an electronic control unit (ECU) (165) is configured to control the operation of said valve (130).