Description:TECHNICAL FIELD
[001] The embodiments herein generally relate to heat exchangers in vehicles and more particularly to a system and a method for automatically cleaning a radiator of the vehicle such as a tractor.
BACKGROUND
[002] Generally, an engine of a tractor generates a significant amount of heat during operation due to combustion processes. A radiator of the tractor acts as a heat exchanger, facilitating the transfer of heat away from the engine. The primary function of the radiator is to cool the engine by dissipating excess heat. The cooling of the engine is crucial for preventing the engine from overheating, which can otherwise lead to mechanical failures, causing damage to the engine.
[003] Tractors are usually employed in various applications, often operating in extremely dusty environments. Due to the field working conditions, characterized by mud and dust, use of the tractors in field work frequently results in the obstruction or clogging of tractor radiators with dirt and dust. This obstruction can lead to the failure of cooling-related components, subsequently increasing repair and maintenance costs. Traditionally, the radiator is positioned at the front of the engine and a protective grill is provided with the radiator to deflect larger objects, to ensure stones and other objects do not hamper the functioning of the radiator and the overall well-being of the tractor engine. However, despite the provision of the protective grill, chaff and dirt accumulates in front of the radiator, which can impede the airflow, thereby negatively impacting tractor performance.
[004] Some of the existing tractors incorporate radiators in a compact location at the front of the engine, shielded by the protective grill to prevent the ingress of larger debris. Despite this design, regular cleaning and maintenance is essential. Since radiators operate on the principle of heat transfer for cooling the system by dissipating heat from one part to another, therefore, any form of debris, including dirt, mud, or plant material, acts as an insulator, thereby hindering the efficient transfer of heat. Essentially, if a radiator becomes coated in mud or dirt, its ability to cool the system is significantly compromised, posing the risk of malfunctions, damage, or even the destruction of a vehicle's engine or subsystems. Consequently, manual intervention is necessary to clear the accumulated dirt and maintain optimal radiator function.
[005] While some users resort to using water for radiator cleaning, this approach can result in the creation of mud, which is highly undesirable. An alternative and effective method involves using compressed air, often readily available to the user with access to an air compressor. This cost-effective technique helps maintain tractor functionality under diverse conditions. However, such method of manual cleaning of radiators is labor- intensive and time-consuming.
[006] Therefore, there exists a need for systems and method for cleaning a radiator in a vehicle which obviates the aforementioned drawbacks.
OBJECTS
[007] The principal object of embodiments herein is to provide systems for cleaning of a heat exchanger in a vehicle.
[008] Another object of embodiments herein is to provide systems which effectively clean contaminants including dirt, debris, and chaff accumulated in a radiator of the vehicle such as a tractor, thereby improving performance of the radiator.
[009] Another object of embodiments herein is to provide systems for cleaning the heat exchanger which utilizes engine exhaust gas to de-clog the heat exchanger.
[0010] Another object of embodiments herein is to provide a method for cleaning of the heat exchanger of the vehicle which overcomes the need for manual cleaning of the heat exchanger.
[0011] Another object of embodiments herein is to monitor and notify the level of accumulation of contaminants on the heat exchanger, to the user of the vehicle.
[0012] Another object of embodiments herein is to provide a user initiated cleaning of the heat exchanger.
[0013] These and other objects of embodiments herein will be better appreciated and understood when considered in conjunction with following description and accompanying drawings. It should be understood, however, that the following descriptions, while indicating 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 DRAWINGS
[0014] The embodiments are illustrated in the accompanying drawings, throughout which like reference letters indicate corresponding parts in various figures. The embodiments herein will be better understood from the following description with reference to the drawings, in which:
[0015] Fig. 1 depicts a schematic diagram of a system for cleaning a heat exchanger of a vehicle, according to a first embodiment as disclosed herein;
[0016] Fig. 2 depicts a sectional view of the system for cleaning the heat exchanger of the vehicle, according to the first embodiment as disclosed herein;
[0017] Fig. 3 depicts a circuit diagram of the system when a pressure switch is in an open circuit position, according to the first embodiment as disclosed herein;
[0018] Fig. 4 depicts a circuit diagram of the system when the pressure switch is in a closed circuit position, according to the first embodiment as disclosed herein;
[0019] Fig. 5 depicts a schematic diagram of a system for cleaning a heat exchanger of a vehicle, according to a second embodiment, as disclosed herein; and
[0020] Fig. 6 is a flowchart depicting a method for cleaning a heat exchanger of an engine cooling system of a vehicle, according to embodiments as disclosed herein.
DETAILED DESCRIPTION
[0021] 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.
[0022] The embodiments herein achieve systems for cleaning a heat exchanger in a vehicle. Further, embodiments herein achieve a method for cleaning the heat exchanger in the vehicle. Referring now to the drawings Figs. 1 through 6, where similar reference characters denote corresponding features consistently throughout the figures, there are shown embodiments.
[0023] Fig. 1 depicts a system (100) for cleaning a heat exchanger (200) of a vehicle, according to a first embodiment as disclosed herein. Fig. 2 depicts a sectional view of the system (100), according to embodiments disclosed herein. In the first embodiment, the system (100) includes an exhaust gas dispenser (102), a control valve (104) and a pressure switch (106). For the purpose of this description and ease of understanding, the system (100) is explained herein with below reference to clean the heat exchanger (200) such as but not limited to a radiator of an engine cooling system in the vehicle such as but not limited to a tractor. However, it is also within the scope of the invention to use/practice the components of the system (100) for cleaning intercoolers, aftercoolers or any other heat exchangers present in any other vehicles, or condensers and other any heat exchangers present in any other applications, where cleaning of the heat exchanger is required, without otherwise deterring the intended function of the system (100) as can be deduced from the description and corresponding drawings.
[0024] The exhaust gas dispenser unit (102) is provided in vicinity of the heat exchanger (200) of the vehicle, and the control valve (104) is coupled to the exhaust gas dispenser unit (102). Further, the pressure switch (106) is provided in vicinity of the heat exchanger (200), and in communication with a battery (204) (as shown in fig. 1, fig. 3 and fig. 4) of the vehicle and the control valve (104). In an embodiment, the pressure switch (106) is disposed between a core (200C) (as shown in fig. 2) of the heat exchanger (200) and a fan (202) (as shown in fig. 2) of the vehicle. The fan (202) is disposed towards rear of the heat exchanger (200) and is adapted to suction air from outside towards and through the heat exchanger (200), thereby allowing ambient air (A) to flow into and through the heat exchanger (200). The pressure switch (106) is configured to measure a pressure of the ambient air flow (A) exiting through the heat exchanger (200) to detect a level of accumulation of contaminants on the heat exchanger (200). The pressure switch (106) is configured to move from an open circuit position (as shown in fig. 3) to a closed circuit position (as shown in fig. 4), wherein in the closed circuit position the pressure switch (106) allows electric current supply from the battery (204) to the control valve (104), thereby energizing the control valve (104), when the pressure of ambient air flow exiting through the heat exchanger (200) reaches a predefined pressure threshold corresponding to accumulation of contaminants on the heat exchanger (200) reaching a threshold contamination. For the purpose of this description and ease of understanding, the predefined pressure threshold is a low pressure threshold or a drop in pressure of ambient air exiting the heat exchanger (200) when compared to the pressure of ambient air entering the heat exchanger(200) or the pressure of ambient air exiting the heat exchanger (200) is lesser than the pressure of ambient air entering the heat exchanger (200), when the accumulation of contaminants on the heat exchanger (200) has reached the contamination threshold. Further, the pressure switch (106) is configured to move from the closed circuit position to the open circuit position (as shown in fig. 3), wherein in the open circuit position the pressure switch (106) is configured to cut-off electric current supply from the battery (204) to the control valve (104) thereby de-energizing the control valve (104), when the pressure of ambient air flow exiting through the heat exchanger (200) is more than the predefined pressure threshold corresponding to accumulation of contaminants on the heat exchanger (200) falling below the contamination threshold. For example, when the accumulation of contaminants on the heat exchanger (200) falls below the contamination threshold, the pressure of ambient air exiting the heat exchanger (200) is equal to the pressure of ambient air entering the heat exchanger (200). In an embodiment, the pressure switch (106) is at least a diaphragm pressure switch. However, it is within the scope of this invention to have any other pressure switch such as but not limited to a piston pressure switch, bellow pressure switch, and any other electronic operated pressure switch. In an embodiment, as shown in Fig. 2, the pressure switch (106) is connected to a shroud (200S) of the heat exchanger (200), wherein an extension member (106T) extends from the pressure switch (106) into the shroud (200S) of the heat exchanger (200). The extension member (106T) is adapted to allow the pressure switch (106) to detect the pressure drop across the heat exchanger (200) without impacting the air flow between the heat exchanger (200) and the fan (202). In an embodiment, the extension member (106T) is a tube. The ambient air flow (A) through the heat exchanger (200) is affected on accumulation of contaminants on the heat exchanger (200), wherein an increase in level of accumulation of contaminants on the heat exchanger (200) decreases the ambient airflow (A) through the heat exchanger (200), thereby increasing a pressure drop across the heat exchanger (200).
[0025] The control valve (104) is adapted to move from a closed position (as shown in fig. 3) to an open position (as shown in fig. 4) when the pressure switch (106) moves to the closed circuit position. In the open position, the control valve (104) is configured to allow exhaust gas flow from an engine of the vehicle to the exhaust gas dispenser unit (102). The control valve (104) is configured to move from the open position to the closed position upon de-energizing, when the pressure switch (106) is moved to the open circuit position. In the closed position, the control valve (104) is configured to stop the exhaust gas flow from the engine to the exhaust gas dispenser unit (102). In an embodiment, the control valve (104) is a solenoid valve.
[0026] The exhaust gas dispenser unit (102) is adapted to direct the exhaust gas flow onto the heat exchanger (200) to remove accumulated contaminants from the heat exchanger (200). In an embodiment, the exhaust gas dispenser unit (102) includes a manifold (102A), and a plurality of exhaust gas dispensers (102B) provided on the manifold (102A) (as shown in fig. 1). The manifold (102A) is coupled to the control valve (104) and is adapted to receive the exhaust gas when the control valve (104) is in the open position. The exhaust gas dispensers (102B) are provided in vicinity of the heat exchanger (200) and are adapted to dispense the exhaust gas onto the heat exchanger (200) to remove accumulated contaminants on the heat exchanger (200). In an embodiment, each of the exhaust gas dispenser (102B) is a separate part or an integral part of the manifold (102A). In an embodiment, each of the exhaust gas dispenser (102B) is one of an outlet channel or a nozzle provided on the manifold (102A). Further, in an embodiment, the heat exchanger (200) is at least a radiator, and the exhaust gas dispenser unit (102) is provided above the heat exchanger (200) such that the exhaust gas is directed towards a core (200C) of the heat exchanger (200).
[0027] In an embodiment, the system (100) includes a first pipe (108) (as shown in fig. 1 and fig. 3 to fig. 5) adapted to couple the control valve (104) with an exhaust gas line of the engine, and a second pipe (110) ) (as shown in fig. 1 and fig. 3 to fig. 5) adapted to couple the control valve (104) with the exhaust gas dispenser unit (102).
[0028] Fig. 5 depicts a schematic diagram of the system (300) for automatically cleaning the heat exchanger (400) of the vehicle, according to second embodiments as disclosed herein. In the second embodiment, the system (300) includes an exhaust gas dispenser unit (302), a sensing unit (304), a control valve (306), and a control unit (308). The sensing unit (304) is provided in vicinity of the heat exchanger (400), and the control unit (308) is provided in communication with the sensing unit (304) and the control valve (306). The sensing unit (304) is configured to sense and communicate at least one parameter relevant to detecting a level of accumulation of contaminants on the heat exchanger (400) to the control unit (308). The control unit (308) is configured to actuate the control valve (306) to allow exhaust gas flow to the exhaust gas dispenser unit (302), upon determining the detected level of accumulation of contaminants on the heat exchanger (400) has reached a contamination threshold. In an embodiment, the control unit (308) is configured to determine the level of accumulation of contaminants as any one of high level of contamination, medium level of contamination, and low level of contamination. Further, the control unit (308) is configured to send the determined level of accumulation to a user interface device, wherein a user sends an instruction to the control unit (308) through the user interface device to initiate a cleaning process of the heat exchanger (400). The control unit (308) is configured to actuate the control valve (306) upon receiving the instruction from the user interface device. Furthermore, the control unit (308) is configured to actuate the control valve (306), upon determining the user has failed to send the instruction to the control unit (308) to initiate the cleaning process on determining the level of accumulation of contaminants in the heat exchanger (400) has reached the contamination threshold. In an embodiment, the user interface device is at least one of an infotainment device of the vehicle, and a remote device such as, but not limited to a smartphone, and a computing device.
[0029] In an embodiment, the sensing unit (304) is at least a pressure sensor. The pressure sensor is configured to sense and communicate pressure of ambient air circulated between a fan (402) and a core of said heat exchanger (400). In this embodiment, the control unit (308) is configured to receive the measured pressure of ambient air from the sensing unit (304), compare the measured pressure of ambient air flow with the predefined pressure threshold corresponding to contamination threshold on the heat exchanger (400), and actuate the control valve (306) upon determining that the measured pressure of ambient air detected by the sensing unit (304) has reached the pressure threshold, where the pressure threshold is a low pressure threshold or drop in pressure of ambient air exiting the heat exchanger. In another embodiment, the sensing unit (304) is at least an image acquisition device. The image acquisition device is adapted to capture and send at least one media or picture of the heat exchanger (400) to the control unit (308). In another embodiment, the control unit (308) is configured to receive the captured at least one media or picture of the heat exchanger (400) from the sensing unit (304). The control unit (308) is further configured to compare the captured at least one media or picture of the heat exchanger (400) with predefined media or picture of the heat exchanger (400) corresponding to contamination threshold on the heat exchanger (400) and actuate the control valve (306) upon determining that the captured at least one media or picture of the heat exchanger (400) matches with the predefined media or picture of the heat exchanger (400).
[0030] In another embodiment, the sensing unit (304) is a temperature sensor which detects and communicates a temperature of engine coolant exiting the heat exchanger, to the control unit (308). The control unit (308) is configured to compare the measured temperature of engine coolant exiting the heat exchanger with a predefined temperature threshold corresponding to contamination threshold on the heat exchanger (400), and actuate the control valve (306) upon determining that the measured temperature of engine coolant detected by the sensing unit (304) has reached the temperature threshold, where the temperature threshold is a high temperature threshold or, the temperature of engine coolant exiting the heat exchanger is more that the desired temperature of engine coolant that is circulated back to the engine for cooling the engine. In another embodiment, the sensing unit (304) is a temperature sensor which detects and communicates a temperature of heat exchanger (400), to the control unit (308). In another embodiment, the sensing unit (304) is a flow sensor which detects and communicates a flow rate of ambient air exiting the heat exchanger (400), to the control unit (308). It is also within the scope of the invention to use contact sensor or non-contact sensors for sensing parameters relevant to detecting accumulation of contaminants on the heat exchanger. Further, it is also within the scope of the invention to use compressed air, pressurized water or any other cleaning fluid instead of exhaust gas for cleaning the heat exchanger (200, 400).
[0031] Fig. 6 is a flowchart depicting a method (500) for automatically cleaning of the heat exchanger (200) of the vehicle. The method (500) includes, at step (502), moving, by the pressure switch (106) from the open circuit position to the closed circuit position in which the pressure switch allows electric current supply from the battery (204) to a control valve (104) thereby energizing the control valve (104) when the pressure of ambient airflow (A) exiting the heat exchanger (200) reaches the predefined threshold corresponding to accumulation of contaminants on the heat exchanger (200) reaching the threshold contamination. At step (504), the method (500) includes moving, by the control valve (104) from a closed position to an open position upon energization of the control valve (104). At step (506), the method (500) includes allowing, by the control valve (104) in the open position, exhaust gas flow from the engine to the exhaust gas dispenser unit (102). At step (508), the method (500) includes directing, by the exhaust gas dispenser unit (102), the exhaust gas flow onto the heat exchanger (200) to remove accumulated contaminants from the heat exchanger (200). Further, the method (500) further includes, at step (510), moving by the pressure switch (106) from the closed circuit position to the open circuit position in which the pressure switch (106) cuts-off electric current supply from the battery (204) to the control valve (104) thereby de-energizing the control valve (104) when the pressure of ambient air flow exiting through the heat exchanger (200) is more than the predefined pressure threshold corresponding to accumulation of contaminants on the heat exchanger (200) falling below the contamination threshold. At step (512), the method (500) includes, moving, by the control valve (104) from the open position to the closed position upon de-energization of the control valve (104), thereby stopping exhaust gas flow from the engine to the exhaust gas dispenser unit (102). In an embodiment, the method (500) includes, connecting the pressure switch with the battery (204) of the vehicle and the control valve (104), in vicinity of the heat exchanger (200).
[0032] The technical advantages of systems (100, 300) and method (500) for cleaning a heat exchanger (200, 400) of a vehicle are as follows. Cleaning of the heat exchanger, obviating the need for manually removing the accumulated contaminants on the heat exchanger, thereby saving maintenance time and efforts, utilization of engine exhaust gas which obviates the need for a separate source such as an air compressor for removing the contaminants, and increase engine efficiency by maintaining proper functioning of the heat exchanger. The system monitors and notifies the level of accumulation of contaminants on the heat exchanger, to the user of the vehicle. The system allows user initiated cleaning of the heat exchanger.
[0033] 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 embodiments, those skilled in the art will recognize that the embodiments herein can be practiced with modifications within the spirit and scope of the embodiments as described herein.
, Claims:We claim,
1. A system (100) for cleaning a heat exchanger (200) of a vehicle, said system (100) comprising:
an exhaust gas dispenser unit (102) provided in vicinity of said heat exchanger (200);
a control valve (104) coupled to said exhaust gas dispenser unit (102); and
a pressure switch (106) provided in communication with a battery (204) of said vehicle and said control valve (104), wherein said pressure switch (106) is provided in vicinity of said heat exchanger (200),
wherein
said pressure switch (106) is configured to move from an open circuit position to a closed circuit position in which said pressure switch (106) allows electric current supply from said battery (204) to said control valve (104) thereby energizing said control valve (104) when a pressure of ambient air flow exiting through said heat exchanger (200) reaches a predefined pressure threshold;
said control valve (104) is adapted to move from a closed position to an open position in which said control valve (104) allows exhaust gas flow from an engine to said exhaust gas dispenser unit (102) on energization of said control valve (104); and
said exhaust gas dispenser unit (102) is adapted to direct the exhaust gas flow onto said heat exchanger (200) to remove accumulated contaminants from said heat exchanger (200).
2. The system (100) as claimed in claim 1, wherein said exhaust gas dispenser unit (102) comprises:
a manifold (102A) coupled to said control valve (104); and
a plurality of exhaust gas dispensers (102B) provided on said manifold (102A) in vicinity of said heat exchanger (200),
wherein
said manifold (102A) is adapted to receive the exhaust gas when said control valve (104) is in said open position; and
said exhaust gas dispensers (102B) are adapted to dispense the exhaust gas onto said heat exchanger (200) to remove accumulated contaminants on said heat exchanger (200).
3. The system (100) as claimed in claim 1, wherein each of said exhaust gas dispenser (102B) is a separate part or an integral part of said manifold (102A); and
each of said exhaust gas dispenser (102B) is one of an outlet channel or a nozzle provided on said manifold (102A).
4. The system (100) as claimed in claim 1, wherein said heat exchanger (200) is at least a radiator;
said exhaust gas dispenser unit (102) is provided above said heat exchanger (200) such that the exhaust gas is directed towards a core (200C) of said heat exchanger (200); and
said predefined pressure threshold is a low pressure threshold or a pressure of ambient air exiting said heat exchanger (200) is lesser than the pressure of ambient air entering said heat exchanger (200) when the accumulation of contaminants on said heat exchanger (200) has reached a contamination threshold.
5. The system (100) as claimed in claim 1, wherein said pressure switch (106) is disposed between a fan (202) and a core (200C) of said heat exchanger (200);
said pressure switch (106) is configured to move from said closed circuit position to said open circuit position in which said pressure switch (106) cuts-off electric current supply from said battery (204) to said control valve (104) thereby de-energizing said control valve (104) when the pressure of ambient air exiting said heat exchanger (200) is more than said predefined pressure threshold corresponding to accumulation of contaminants on said heat exchanger (200) falling below said contamination threshold;
said pressure switch (106) is at least a diaphragm pressure switch; and
said control valve (104) is at least a solenoid valve.
6. The system (100) as claimed in claim 1, wherein said system (100) includes,
a first pipe (108) adapted to couple said control valve (104) with an exhaust gas line of said engine; and
a second pipe (110) adapted to couple said control valve (104) with said exhaust gas dispenser unit (102).
7. A system (300) for cleaning a heat exchanger (400) of a vehicle, said system (300) comprising:
an exhaust gas dispenser unit (302) provided in vicinity of said heat exchanger (400);
a sensing unit (304) provided in vicinity of said heat exchanger (400);
a control valve (306) coupled to said exhaust gas dispenser unit (302); and
a control unit (308) provided in communication with said sensing unit (304) and said control valve (306),
wherein,
said sensing unit (304) is configured to sense and communicate at least one parameter relevant to detecting a level of accumulation of contaminants on said heat exchanger (400) to said control unit (308);
said control unit (308) is configured to actuate said control valve (306) to allow exhaust gas flow to said exhaust gas dispenser unit (302), upon determining the detected level of accumulation of contaminants on said heat exchanger (400) has reached a contamination threshold; and
said exhaust gas dispenser unit (302) is adapted to direct the exhaust gas onto said heat exchanger (400) to remove accumulated contaminants from said heat exchanger (400).
8. The system (300) as claimed in claim 7, wherein said sensing unit (304) is at least a pressure sensor configured to sense and communicate pressure of ambient air circulated between a fan (402) and a core of said heat exchanger (400); and
said control unit (308) is configured to,
receive the measured pressure of ambient air from said sensing unit (304);
compare the measured pressure of ambient air with a predefined pressure threshold corresponding to contamination threshold on said heat exchanger (400); and
actuate said control valve (306) upon determining that the measured pressure of ambient air detected by said sensing unit (304) has reached the pressure threshold.
9. The system (300) as claimed in claim 7, wherein said sensing unit (304) comprises at least an image acquisition device adapted to capture and send at least one media or picture of said heat exchanger (400) to said control unit (308); and
said control unit (308) is configured to:
receive the captured at least one media or picture of said heat exchanger (400) from said sensing unit (304);
compare the captured at least one media or picture of said heat exchanger (400) with predefined media or picture of said heat exchanger (400) corresponding to contamination threshold on said heat exchanger (400); and
actuate said control valve (306) upon determining that the captured at least one media or picture of said heat exchanger (400) matches with predefined media or picture of said heat exchanger (400).
10. The system (300) as claimed in 7, wherein said control unit (308) is configured to:
determine the level of accumulation of contaminants as any one of high level of contamination, medium level of contamination, and low level of contamination;
send said determined level of accumulation of contaminants to a user interface device, wherein a user sends an instruction to said control unit (308) through said user interface device to initiate a cleaning process of said heat exchanger (400), wherein said control unit (308) is configured to actuate said control valve (306) upon receiving said instruction from said user interface device; and
actuate said control valve (306), upon determining the user has failed to send said instruction to said control unit (308) to initiate the cleaning process and determining the level of accumulation of contaminants in the heat exchanger (400) has reached the threshold value, wherein said user interface is at least one of an infotainment device of the vehicle, and a remote device comprising a smartphone, and computing device.
11. A method (500) for cleaning a heat exchanger (200) of a vehicle, said method (500) comprising:
moving, by a pressure switch (106) from an open circuit position to a closed circuit position when a pressure of ambient air flow exiting through said heat exchanger (200) reaches a predefined pressure threshold corresponding to accumulation of contaminants on said heat exchanger (200) reaching a threshold contamination, wherein in said closed circuit position, said pressure switch (106) allows electric current supply from a battery (204) to a control valve (104) thereby energizing said control valve (104);
moving, by said control valve (104) from a closed position to an open position upon energization of said control valve (104);
allowing, by said control valve (104) in said open position, exhaust gas flow from an engine to an exhaust gas dispenser unit (102) upon energization of said control valve (104); and
directing, by said exhaust gas dispenser unit (102), the exhaust gas flow onto said heat exchanger (200) to remove accumulated contaminants from said heat exchanger (200).
12. The method (500) as claimed in claim 11, wherein said method (500) comprises:
moving, by said pressure switch (106) from said closed circuit position to said open circuit position when the pressure of ambient air flow exiting through said heat exchanger (200) is more than said predefined pressure threshold corresponding to accumulation of contaminants on said heat exchanger (200) falling below said contamination threshold, wherein in said close circuit position said pressure switch (106) cuts-off electric current supply from said battery (204) to said control valve (104) thereby de-energizing said control valve (104); and
moving by said control valve (104) from said open position to said closed position upon de-energization of said control valve (104) thereby stopping exhaust gas flow from the engine to said exhaust gas dispenser unit (102).