An engine cooling system and an automobile

Abstract

This invention discloses an engine cooling system and an automobile. The engine cooling system includes a connecting pipe, a temperature sensing unit within the pipe, an exhaust unit, and a control unit. The connecting pipe is connected to the engine block. The temperature sensing unit is disposed within the connecting pipe to sense the pipe temperature. The exhaust unit is disposed between the engine block and the chassis. The control unit is electrically connected to both the temperature sensing unit and the exhaust unit, and is used to control the exhaust unit to start when the pipe temperature is greater than or equal to a preset temperature, thereby expelling hot air around the engine block. This engine cooling system allows for the control of the exhaust unit to start when the engine temperature is too high, thus accelerating heat dissipation from the engine block.

Description

Technical Field

[0001] This invention relates to the field of engine cooling technology, and more particularly to an engine cooling system and an automobile. Background Technology

[0002] The engine cooling system of a car is an important system to ensure that the engine can work normally and reliably, and can prevent the engine from overheating and causing damage.

[0003] With the continuous development of large-displacement engines, the heat they generate has also increased. Therefore, large-displacement engines have higher requirements for the heat dissipation of their cooling systems.

[0004] However, the current cooling systems for large-displacement engines still only transfer coolant to the radiator via water pipes, which cannot meet the cooling requirements of large-displacement engines. Summary of the Invention

[0005] This invention provides an engine cooling system and a car to solve the problem that existing cooling systems have low heat dissipation capacity and cannot meet the heat dissipation requirements of large-displacement engines.

[0006] In a first aspect, embodiments of the present invention provide an engine cooling system, which includes a connecting pipe, a temperature sensing unit within the pipe, an exhaust unit, and a control unit;

[0007] The connecting pipe is connected to the engine cylinder block;

[0008] The temperature sensing unit inside the pipeline is disposed inside the connecting pipeline and is used to sense the pipeline temperature information inside the connecting pipeline.

[0009] The exhaust unit is disposed between the engine block and the chassis;

[0010] The control unit is electrically connected to the temperature sensing unit in the pipeline and the exhaust unit respectively, and is used to control the exhaust unit to start when the pipeline temperature information is greater than or equal to a preset temperature, so as to exhaust the high-temperature air around the engine block.

[0011] Optionally, the exhaust unit includes an intake pipe, an electric air pump, and an exhaust pipe connected in series.

[0012] The intake pipe is located on the engine block near the engine cylinder head, and the exhaust pipe is located on the chassis; the electric air pump is electrically connected to the control unit.

[0013] The control unit is used to control the electric air pump to operate in a first speed mode when the pipeline temperature information is greater than or equal to the first preset temperature and less than the second preset temperature; and to control the electric air pump to operate in a second speed mode when the pipeline temperature information is greater than or equal to the second preset temperature; wherein the speed in the second speed mode is greater than the speed in the first speed mode; and the second preset temperature is greater than the first preset temperature.

[0014] Optionally, the engine cooling system further includes a heat sink unit;

[0015] The heat sink unit is disposed on the outside of the engine block and is electrically connected to the control unit; the control unit is further configured to control the heat sink unit to attach to the outer surface of the engine block when the pipeline temperature information is less than the preset temperature; and to control the heat sink unit to form a preset angle with the outer surface of the engine block when the pipeline temperature information is greater than or equal to the preset temperature, wherein the preset angle is greater than zero.

[0016] Optionally, the heat sink unit includes: a first heat sink and a second heat sink;

[0017] The first heat sink and the second heat sink are respectively disposed on two opposite sides of the engine block; both the first heat sink and the second heat sink are electrically connected to the control unit.

[0018] The control unit is used to control the state of the first heat sink and the second heat sink according to the pipeline temperature information.

[0019] Optionally, the engine cooling system further includes a radiator unit, a water jacket unit, an electric water pump, and an electric temperature control unit;

[0020] The connecting pipeline includes an inlet pipeline and an outlet pipeline;

[0021] The radiator unit is located outside the engine block and is connected to the inlet pipe and the outlet pipe; the water jacket unit is located inside the engine block and is connected to the inlet pipe and the outlet pipe; the electric water pump is located in the inlet pipe; and the electric temperature control unit is located in the outlet pipe.

[0022] The radiator unit includes at least two radiators, and the control unit is further configured to control the number of radiators connected to the connecting pipe according to the pipe temperature information.

[0023] The water jacket unit includes at least two water jackets, and the control unit is also used to control the number of water jackets connected to the connecting pipeline according to the pipeline temperature information;

[0024] The electric water pump is electrically connected to the control unit; the control unit is also used to control the speed of the electric water pump according to the pipeline temperature information;

[0025] The electric temperature control unit includes a switch subunit, which is electrically connected to the control unit; the control unit is also used to control the conduction state of the switch subunit according to the pipeline temperature information.

[0026] Optionally, the radiator unit includes a first radiator, a second radiator, and a first electrically controlled flow valve;

[0027] The first radiator and the second radiator are connected in parallel between the inlet pipe and the outlet pipe, and the first electrically controlled flow valve is disposed on the side of the second radiator near the outlet pipe; the first electrically controlled flow valve is electrically connected to the control unit;

[0028] The control unit is configured to, when the pipeline temperature information is greater than or equal to a first preset temperature and less than a second preset temperature, control the first electrically controlled flow valve to be in a closed state so that the first radiator is connected to the connecting pipeline; and when the pipeline temperature information is greater than or equal to the second preset temperature, control the first electrically controlled flow valve to be in a conducting state so that both the first radiator and the second radiator are connected to the connecting pipeline; wherein the second preset temperature is greater than the first preset temperature.

[0029] Optionally, the water jacket unit includes a first water jacket, a second water jacket, and a second electrically controlled flow valve;

[0030] The first water jacket and the second water jacket are connected in parallel between the inlet pipe and the outlet pipe, and the second electrically controlled flow valve is disposed on the side of the second water jacket closer to the inlet pipe; the second electrically controlled flow valve is electrically connected to the control unit;

[0031] The control unit is used to control the second electrically controlled flow valve to be in a closed state when the pipeline temperature information is greater than or equal to a first preset temperature and less than a second preset temperature, so that the first water jacket is connected to the connecting pipeline; and to control the second electrically controlled flow valve to be in a conducting state when the pipeline temperature information is greater than or equal to the second preset temperature, so that both the first water jacket and the second water jacket are connected to the connecting pipeline; wherein the second preset temperature is greater than the first preset temperature.

[0032] Optionally, the control unit is configured to control the electric water pump to operate in a third speed mode when the pipeline temperature information is greater than or equal to a first preset temperature and less than a second preset temperature; and to control the electric water pump to operate in a fourth speed mode when the pipeline temperature information is greater than or equal to the second preset temperature; wherein the speed in the fourth speed mode is greater than the speed in the third speed mode; and the second preset temperature is greater than the first preset temperature.

[0033] Optionally, the temperature sensing unit inside the pipeline is disposed in the electric temperature control unit.

[0034] In a second aspect, embodiments of the present invention provide an automobile that includes an engine cooling system as described in any embodiment of the first aspect.

[0035] The technical solution of this invention, through the above-mentioned engine cooling system, can control the exhaust unit to start when the engine block temperature is too high, so as to expel the high-temperature air around the engine block, which is conducive to accelerating the heat dissipation of the engine block. It solves the problem that the heat dissipation capacity of the existing engine cooling system is low and cannot meet the heat dissipation requirements of large displacement engines. It has the beneficial effect of improving the heat dissipation capacity of the engine cooling system and ensuring the normal operation of the engine.

[0036] It should be understood that the description in this section is not intended to identify key or essential features of the embodiments of the present invention, nor is it intended to limit the scope of the invention. Other features of the invention will become readily apparent from the following description. Attached Figure Description

[0037] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0038] Figure 1 This is a schematic diagram of an engine cooling system provided in an embodiment of the present invention. Detailed Implementation

[0039] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0040] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the invention described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0041] Example 1

[0042] Figure 1 This is a schematic diagram of an engine cooling system provided in an embodiment of the present invention, with reference to... Figure 1 The engine cooling system 100 in this embodiment of the invention includes a connecting pipe 110, a temperature sensing unit 120 inside the pipe, an exhaust unit 130, and a control unit 140.

[0043] Specifically, the connecting pipe 110 is connected to the engine block 200. A pipe temperature sensing unit 120 is disposed within the connecting pipe 110 to sense the pipe temperature. The exhaust unit 130 is disposed between the engine block 200 and the chassis. The control unit 140 is electrically connected to both the pipe temperature sensing unit 120 and the exhaust unit 130, and is used to control the exhaust unit 130 to start when the pipe temperature is greater than or equal to a preset temperature, so as to expel the high-temperature air surrounding the engine block 200.

[0044] For example, the connecting pipe 110 is connected to the engine block 200, which allows the coolant to circulate in the connecting pipe 110 and the engine block 200 to dissipate the heat generated by the engine block 200, thereby reducing the temperature of the engine block 200. The pipe temperature sensing unit 120 is installed in the connecting pipe 110 and electrically connected to the control unit 140. It can be used to sense the temperature of the coolant in the connecting pipe 110, obtain the pipe temperature information, and transmit the obtained pipe temperature information to the control unit 140. The control unit 140 is electrically connected to the exhaust unit 130. It can control the state of the exhaust unit 130 according to the received pipe temperature information, i.e., the temperature of the coolant in the connecting pipe 110. For example, when the temperature of the coolant in the connecting pipe 110 received by the control unit 140 is greater than or equal to a preset temperature (such as 113°C), the control unit 140 will output a corresponding control signal to the exhaust unit 130 to control the exhaust unit 130 to start. After the exhaust unit 130 starts, it can exhaust the high-temperature air around the engine block 200, which helps to accelerate the heat dissipation of the engine block 200.

[0045] It should be noted that the specific value of the preset temperature is not limited in the embodiments of the present invention, and those skilled in the art can set it according to actual needs.

[0046] The technical solution of this invention, through the engine cooling system 100, can control the exhaust unit 130 to start when the engine block 200 temperature is too high, so as to exhaust the high temperature air around the engine block 200, which is beneficial to accelerate the heat dissipation of the engine block 200. It solves the problem that the heat dissipation capacity of the existing engine cooling system is low and cannot meet the heat dissipation requirements of large displacement engines. It has the beneficial effect of improving the heat dissipation capacity of the engine cooling system and ensuring the normal operation of the engine.

[0047] Based on the above embodiments, continue to refer to Figure 1 The exhaust unit 130 includes an intake pipe 131, an electric air pump 132, and an exhaust pipe 133 connected in series.

[0048] Specifically, the intake pipe 131 is located on the engine block 200 near the engine cylinder head, and the exhaust pipe 133 is located on the chassis. The electric air pump 132 is electrically connected to the control unit 140. The control unit 140 controls the electric air pump 132 to operate in a first speed mode when the pipeline temperature information is greater than or equal to a first preset temperature and less than a second preset temperature, and controls the electric air pump 132 to operate in a second speed mode when the pipeline temperature information is greater than or equal to the second preset temperature. The speed in the second speed mode is greater than the speed in the first speed mode, and the second preset temperature is greater than the first preset temperature.

[0049] It is understandable that the air temperature near the engine cylinder head is higher than other parts of the engine block 200. Therefore, placing the intake pipe 131 of the exhaust unit 130 near the engine cylinder head of the engine block 200 is beneficial to improving the heat dissipation efficiency of the exhaust unit 130.

[0050] For example, the electric air pump 132 of the exhaust unit 130 is electrically connected to the control unit 140. When the pipe temperature information received by the control unit 140 is greater than or equal to a preset temperature, the control unit 140 will control the electric air pump 132 to start, so as to cooperate with the intake pipe 131 and the exhaust pipe 133 to exhaust the high-temperature air near the engine cylinder head of the engine block 200 to the air outside the chassis. It can be understood that the higher the temperature of the coolant in the connecting pipe 110, the higher the heat dissipation demand of the engine block 200; the higher the speed of the electric air pump 132, the higher the heat dissipation efficiency of the exhaust unit 130. Therefore, to meet the higher heat dissipation requirements of the engine block 200, the control unit 140 needs to be able to control the speed of the electric air pump 132 based on the received pipe temperature information, i.e., the temperature of the coolant in the connecting pipe 110. Specifically, the higher the temperature of the coolant in the connecting pipe 110, the higher the speed of the electric air pump 132 should be. For example, when the temperature of the coolant in the connecting pipe 110 is greater than or equal to a first preset temperature (e.g., 113°C) and less than a second preset temperature (e.g., 115°C), the control unit 140 controls the electric air pump 132 to operate in the first speed mode. When the temperature of the coolant in the connecting pipe 110 is greater than or equal to the second preset temperature (e.g., 115°C), the control unit 140 controls the electric air pump 132 to operate in the second speed mode, where the speed in the first speed mode is lower than the speed in the second speed mode.

[0051] It should be noted that the specific value of the first preset temperature is not limited in the embodiments of the present invention. The first preset temperature can be equal to or greater than the preset temperature, and those skilled in the art can set it according to actual needs. The embodiments of the present invention are illustrated using the example of the first preset temperature being equal to the preset temperature.

[0052] Based on the above embodiments, continue to refer to Figure 1 The engine cooling system 100 also includes a heat sink unit 150.

[0053] Specifically, the heat sink unit 150 is disposed on the outside of the engine block 200 and is electrically connected to the control unit 140. The control unit 140 is also used to control the heat sink unit 150 to attach to the outer surface of the engine block 200 when the pipeline temperature information is lower than the preset temperature, and to control the heat sink unit 150 to form a preset angle with the outer surface of the engine block 200 when the pipeline temperature information is greater than or equal to the preset temperature, wherein the preset angle is greater than zero.

[0054] It is understandable that when the heat sink unit 150 is attached to the outer surface of the engine block 200, the heat dissipation area of ​​the engine block 200 is smaller than when the heat sink unit 150 is at a preset angle to the outer surface of the engine block 200. Therefore, when the pipe temperature information received by the control unit 140, i.e., the temperature of the coolant in the connecting pipe 110, is greater than or equal to a preset temperature (e.g., 113°C), controlling the heat sink unit 150 to form a preset angle with the outer surface of the engine block 200 can accelerate the heat dissipation of the engine block 200. Preferably, the preset angle can be 90°, and the heat dissipation area of ​​the engine block 200 is maximized when the heat sink unit 150 is perpendicular to the outer surface of the engine block 200.

[0055] It should be noted that the specific values ​​of the preset angles described above are not limited in the embodiments of the present invention, and those skilled in the art can set them according to the overall layout space of the engine.

[0056] Based on the above embodiments, continue to refer to Figure 1 The heat sink unit 150 includes: a first heat sink 151 and a second heat sink 152.

[0057] Specifically, the first heat sink 151 and the second heat sink 152 are respectively disposed on opposite sides of the engine block 200. Both the first heat sink 151 and the second heat sink 152 are electrically connected to the control unit 140, which is used to control the state of the first heat sink 151 and the second heat sink 152 according to the pipeline temperature information.

[0058] Compared to a technical solution with only one heat sink, this embodiment of the invention uses two heat sinks, which can further increase the heat dissipation area of ​​the engine block 200 and help accelerate the heat dissipation of the engine block 200.

[0059] It should be noted that the number of heat sinks included in the heat sink unit 150 is not limited in the embodiments of the present invention. It can also be 3, 4, etc., and those skilled in the art can set it according to actual needs.

[0060] Based on the above embodiments, continue to refer to Figure 1 The engine cooling system 100 also includes a radiator unit 160, a water jacket unit 170, an electric water pump 180, and an electric temperature control unit 190.

[0061] Specifically, the connecting pipe 110 includes an inlet pipe 111 and an outlet pipe 112. The radiator unit 160 is located outside the engine block 200 and is connected to the inlet pipe 111 and the outlet pipe 112. The water jacket unit 170 is located inside the engine block 200 and is connected to the inlet pipe 111 and the outlet pipe 112. The electric water pump 180 is located in the inlet pipe 111. The electric temperature control unit 190 is located in the outlet pipe 112. The radiator unit 160 includes at least two radiators, and the control unit 140 is also used to control the number of radiators connected to the connecting pipe 110 based on the pipe temperature information. The water jacket unit 170 includes at least two water jackets, and the control unit 140 is also used to control the number of water jackets connected to the connecting pipe 110 based on the pipe temperature information. The electric water pump 180 is electrically connected to the control unit 140, and the control unit 140 is also used to control the rotational speed of the electric water pump 180 based on the pipe temperature information. The electric temperature control unit 190 includes a switch subunit 191, which is electrically connected to the control unit 140. The control unit 140 is also used to control the conduction state of the switch subunit 191 according to the pipeline temperature information.

[0062] For example, a radiator unit 160, located outside the engine block 200 and connected to the inlet pipe 111 and outlet pipe 112, can be used to reduce the temperature of the coolant flowing out of the outlet pipe 112, so that the temperature of the coolant flowing into the water jacket unit 170 located inside the engine block 200 is lower than the temperature of the engine block 200, thereby achieving the purpose of reducing the temperature of the engine block 200. It is understood that the higher the flow rate of the coolant in the inlet pipe 111 and outlet pipe 112, the higher the heat dissipation efficiency. The flow rate of the coolant in the inlet pipe 111 and outlet pipe 112 is determined by the rotational speed of the electric water pump 180 located in the inlet pipe 111. The higher the rotational speed of the electric water pump 180, the higher the flow rate of the coolant in the inlet pipe 111 and outlet pipe 112, and the higher the heat dissipation efficiency. The electric water pump 180 is electrically connected to the control unit 140. The control unit 140 can control the speed of the electric water pump 180 according to the received pipeline temperature information, i.e., the temperature of the coolant in the connecting pipeline 110. Specifically, the higher the temperature of the coolant in the connecting pipeline 110, the higher the speed of the electric water pump 180.

[0063] For example, the electric temperature control unit 190 installed in the water outlet pipe 112 includes a switch subunit 191. The switch subunit 191 is electrically connected to the control unit 140. The control unit 140 can control the conduction state of the switch subunit 191 according to the received pipe temperature information, i.e., the temperature of the coolant in the connecting pipe 110. For example, when the temperature of the coolant in the connecting pipe 110 is lower than a first preset temperature (e.g., 113°C), the control unit 140 will control the switch subunit 191 to be in the first conduction state. In the first conduction state, the water jacket unit 170 is connected to the electric water pump 180. The water jacket unit 170 and the electric water pump 180 form a first cooling cycle. The coolant in the connecting pipe 110 will circulate in the first cooling cycle formed by the water jacket unit 170 and the electric water pump 180 to cool the engine block 200. When the temperature of the coolant in the connecting pipe 110 is greater than or equal to a first preset temperature (e.g., 113°C), the control unit 140 controls the switch subunit 191 to be in a second conducting state. In the second conducting state, the water jacket unit 170 and the heat dissipation unit 160 are connected, and the water jacket unit 170, the heat dissipation unit 160, and the electric water pump 180 form a second cooling cycle. The coolant in the connecting pipe 110 circulates in the second cooling cycle formed by the water jacket unit 170, the heat dissipation unit 160, and the electric water pump 180 to cool the engine block 200. It can be understood that the cooling capacity of the cooling system 100 when the switch subunit 191 is in the second conducting state is higher than that of the cooling system 100 when the switch subunit 191 is in the second conducting state.

[0064] Furthermore, the radiator unit 160 includes at least two radiators, the water jacket unit 170 includes at least two water jackets, and the number of radiators and water jackets connected to the connecting pipe 110 is determined by the pipe temperature information received by the control unit 140, i.e. the temperature of the coolant in the connecting pipe 110. The higher the temperature of the coolant in the connecting pipe 110, the more radiators and water jackets are connected to the connecting pipe 110.

[0065] Compared to the technical solution that only sets one radiator and one water jacket, the embodiment of the present invention sets up a radiator unit 160 including at least two radiators and a water jacket unit 170 including at least two water jackets. When the temperature of the engine block 200 is too high, the heat dissipation of the engine block 200 can be accelerated by increasing the number of radiators and water jackets connected to the connecting pipe 110, thereby reducing the heat dissipation load of a single radiator and extending the service life of the radiator.

[0066] Based on the above embodiments, continue to refer to Figure 1 The radiator unit 160 includes a first radiator 161, a second radiator 162, and a first electrically controlled flow valve 163.

[0067] Specifically, the first radiator 161 and the second radiator 162 are connected in parallel between the inlet pipe 111 and the outlet pipe 112. The first electrically controlled flow valve 163 is located on the side of the second radiator 162 closest to the outlet pipe 112. The first electrically controlled flow valve 163 is electrically connected to the control unit 140. The control unit 140 controls the first electrically controlled flow valve 163 to be closed when the pipe temperature is greater than or equal to a first preset temperature and less than a second preset temperature, so that the first radiator 161 is connected to the connecting pipe 110. When the pipe temperature is greater than or equal to the second preset temperature, the control unit 140 controls the first electrically controlled flow valve 163 to be open, so that both the first radiator 161 and the second radiator 162 are connected to the connecting pipe 110, wherein the second preset temperature is greater than the first preset temperature.

[0068] Understandably, the higher the temperature of the coolant in the connecting pipe 110, the higher the heat dissipation demand of the engine block 200; the more radiators connected to the connecting pipe 110, the faster the heat dissipation of the cooling unit 160. Therefore, to meet the higher heat dissipation demand of the engine block 200, the control unit 140 needs to be able to control the number of radiators connected to the connecting pipe 110 based on the received pipe temperature information, i.e., the temperature of the coolant in the connecting pipe 110. Specifically, the higher the temperature of the coolant in the connecting pipe 110, the more radiators should be connected to the connecting pipe 110.

[0069] For example, the heat dissipation unit 160 includes a first radiator 161 and a second radiator 162, for a total of two radiators. Whether the second radiator 162 is connected to the connecting pipe 110 is determined by the first electrically controlled flow valve 163. When the first electrically controlled flow valve 163 is closed, the second radiator 162 cannot be connected to the connecting pipe 110. When the first electrically controlled flow valve 163 is open, the second radiator 162 can be connected to the connecting pipe 110. The state of the first electrically controlled flow valve 163 is controlled by the control unit 140 based on the received pipe temperature information, i.e., the temperature of the coolant in the connecting pipe 110. For example, when the temperature of the coolant in the connecting pipe 110 received by the control unit 140 is greater than or equal to a first preset temperature (e.g., 113°C) and less than a second preset temperature (e.g., 115°C), the control unit 140 will control the first electrically controlled flow valve 163 to close. At this time, only the first radiator 161 is connected to the connecting pipe 110. When the temperature of the coolant in the connecting pipe 110 received by the control unit 140 is greater than or equal to the second preset temperature (e.g., 115°C), the control unit 140 will control the first electronically controlled flow valve 163 to open. At this time, the first radiator 161 and the second radiator 162 are both connected to the connecting pipe 110.

[0070] Based on the above embodiments, continue to refer to Figure 1The water jacket unit 170 includes a first water jacket 171, a second water jacket 172, and a second electrically controlled flow valve 173.

[0071] Specifically, the first water jacket 171 and the second water jacket 172 are connected in parallel between the inlet pipe 111 and the outlet pipe 112. The second electrically controlled flow valve 173 is located on the side of the second water jacket 172 closest to the inlet pipe 111. The second electrically controlled flow valve 173 is electrically connected to the control unit 140. The control unit 140 controls the second electrically controlled flow valve 173 to be closed when the pipe temperature information is greater than or equal to a first preset temperature and less than a second preset temperature, so that the first water jacket 171 is connected to the connecting pipe 110. When the pipe temperature information is greater than or equal to the second preset temperature, the control unit 140 controls the second electrically controlled flow valve 173 to be open, so that both the first water jacket 171 and the second water jacket 172 are connected to the connecting pipe 110, wherein the second preset temperature is greater than the first preset temperature.

[0072] Understandably, the higher the temperature of the coolant in the connecting pipe 110, the higher the heat dissipation demand of the engine block 200; the more water jackets connected to the connecting pipe 110, the faster the engine block 200 dissipates heat. Therefore, to meet the higher heat dissipation demand of the engine block 200, the control unit 140 needs to be able to control the number of water jackets connected to the connecting pipe 110 based on the received pipe temperature information, i.e., the temperature of the coolant in the connecting pipe 110. Specifically, the higher the temperature of the coolant in the connecting pipe 110, the more water jackets should be connected to the connecting pipe 110.

[0073] For example, the water jacket 170 includes a first water jacket 171 and a second water jacket 172, for a total of two water jackets. Whether the second water jacket 172 is connected to the connecting pipe 110 is determined by the second electrically controlled flow valve 173. When the second electrically controlled flow valve 173 is closed, the second water jacket 172 cannot be connected to the connecting pipe 110. When the second electrically controlled flow valve 173 is open, the second water jacket 172 can be connected to the connecting pipe 110. The state of the second electrically controlled flow valve 173 is controlled by the control unit 140 according to the received pipe temperature information, i.e., the temperature of the coolant in the connecting pipe 110. For example, when the temperature of the coolant in the connecting pipe 110 received by the control unit 140 is greater than or equal to the first preset temperature (e.g., 113°C) and less than the second preset temperature (e.g., 115°C), the control unit 140 will control the second electrically controlled flow valve 173 to close. At this time, only the first water jacket 171 is connected to the connecting pipe 110. When the temperature of the coolant in the connecting pipe 110 received by the control unit 140 is greater than or equal to the second preset temperature (e.g., 115°C), the control unit 140 will control the second electronically controlled flow valve 173 to open, and both the first water jacket 171 and the second water jacket 172 will be connected to the connecting pipe 110.

[0074] Based on the above embodiments, continue to refer to Figure 1 The control unit 140 is used to control the electric water pump 180 to operate in a third speed mode when the pipeline temperature information is greater than or equal to the first preset temperature and less than the second preset temperature, and to control the electric water pump 180 to operate in a fourth speed mode when the pipeline temperature information is greater than or equal to the second preset temperature. The speed in the fourth speed mode is greater than the speed in the third speed mode, and the second preset temperature is greater than the first preset temperature.

[0075] Understandably, the higher the temperature of the coolant in the connecting pipe 110, the higher the heat dissipation demand of the engine block 200; the higher the speed of the electric water pump 180, the higher the flow rate of the coolant in the inlet pipe 111 and outlet pipe 112, and the faster the engine block 200 dissipates heat. Therefore, to meet the higher heat dissipation demand of the engine block 200, the control unit 140 needs to be able to control the speed of the electric water pump 180 based on the received pipe temperature information, i.e., the temperature of the coolant in the connecting pipe 110. Specifically, the higher the temperature of the coolant in the connecting pipe 110, the higher the speed of the electric water pump 180 should be. For example, when the temperature of the coolant in the connecting pipe 110 is greater than or equal to the first preset temperature (e.g., 113℃) and less than the second preset temperature (e.g., 115℃), the control unit 140 will control the electric water pump 180 to operate in the third speed mode. When the temperature of the coolant in the connecting pipe 110 is greater than or equal to the second preset temperature (e.g., 115°C), the control unit 140 will control the electric water pump 180 to operate in the fourth speed mode, where the speed in the third speed mode is less than the speed in the fourth speed mode.

[0076] As a possible implementation, the temperature sensing unit 120 in the pipeline can be installed in the electric temperature control unit 190.

[0077] Example 2

[0078] Based on the same inventive concept, this invention provides an automobile that includes the engine cooling system 100 described in any embodiment of this invention. Therefore, the automobile includes the technical features of the engine cooling system 100 and has the beneficial effects of an engine cooling system. The similarities can be referred to the description above.

[0079] The specific embodiments described above do not constitute a limitation on the scope of protection of this invention. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this invention should be included within the scope of protection of this invention.

Claims

1. An engine cooling system, characterized in that, It includes connecting pipes, a temperature sensing unit within the pipes, an exhaust unit, and a control unit; The connecting pipe is connected to the engine cylinder block; The temperature sensing unit inside the pipeline is disposed inside the connecting pipeline and is used to sense the pipeline temperature information inside the connecting pipeline. The exhaust unit is disposed between the engine block and the chassis; The control unit is electrically connected to the temperature sensing unit in the pipeline and the exhaust unit respectively, and is used to control the exhaust unit to start when the pipeline temperature information is greater than or equal to a preset temperature, so as to exhaust the high temperature air around the engine block. The exhaust unit includes an intake pipe, an electric air pump, and an exhaust pipe connected in series. The intake pipe is located on the engine block near the engine cylinder head, and the exhaust pipe is located on the chassis; the electric air pump is electrically connected to the control unit. The control unit is used to control the electric air pump to operate in a first speed mode when the pipeline temperature information is greater than or equal to a first preset temperature and less than a second preset temperature; and to control the electric air pump to operate in a second speed mode when the pipeline temperature information is greater than or equal to the second preset temperature; wherein the speed in the second speed mode is greater than the speed in the first speed mode; and the second preset temperature is greater than the first preset temperature.

2. The engine cooling system according to claim 1, characterized in that, The engine cooling system also includes a heat sink unit; The heat sink unit is disposed on the outside of the engine block and is electrically connected to the control unit; the control unit is further configured to control the heat sink unit to attach to the outer surface of the engine block when the pipeline temperature information is less than the preset temperature; and to control the heat sink unit to form a preset angle with the outer surface of the engine block when the pipeline temperature information is greater than or equal to the preset temperature, wherein the preset angle is greater than zero.

3. The engine cooling system according to claim 2, characterized in that, The heat sink unit includes: a first heat sink and a second heat sink; The first heat sink and the second heat sink are respectively disposed on two opposite sides of the engine block; both the first heat sink and the second heat sink are electrically connected to the control unit; The control unit is used to control the state of the first heat sink and the second heat sink according to the pipeline temperature information.

4. The engine cooling system according to claim 1, characterized in that, The engine cooling system also includes a radiator unit, a water jacket unit, an electric water pump, and an electric temperature control unit; The connecting pipeline includes an inlet pipeline and an outlet pipeline; The radiator unit is located outside the engine block and is connected to the inlet pipe and the outlet pipe; the water jacket unit is located inside the engine block and is connected to the inlet pipe and the outlet pipe; the electric water pump is located in the inlet pipe; and the electric temperature control unit is located in the outlet pipe. The radiator unit includes at least two radiators, and the control unit is further configured to control the number of radiators connected to the connecting pipe according to the pipe temperature information. The water jacket unit includes at least two water jackets, and the control unit is also used to control the number of water jackets connected to the connecting pipeline according to the pipeline temperature information; The electric water pump is electrically connected to the control unit; the control unit is also used to control the speed of the electric water pump according to the pipeline temperature information; The electric temperature control unit includes a switch subunit, which is electrically connected to the control unit; the control unit is also used to control the conduction state of the switch subunit according to the pipeline temperature information.

5. The engine cooling system according to claim 4, characterized in that, The radiator unit includes a first radiator, a second radiator, and a first electrically controlled flow valve; The first radiator and the second radiator are connected in parallel between the inlet pipe and the outlet pipe, and the first electrically controlled flow valve is disposed on the side of the second radiator near the outlet pipe; the first electrically controlled flow valve is electrically connected to the control unit; The control unit is configured to, when the pipeline temperature information is greater than or equal to a first preset temperature and less than a second preset temperature, control the first electrically controlled flow valve to be in a closed state so that the first radiator is connected to the connecting pipeline; and when the pipeline temperature information is greater than or equal to the second preset temperature, control the first electrically controlled flow valve to be in a conducting state so that both the first radiator and the second radiator are connected to the connecting pipeline; wherein the second preset temperature is greater than the first preset temperature.

6. The engine cooling system according to claim 4, characterized in that, The water jacket unit includes a first water jacket, a second water jacket, and a second electrically controlled flow valve; The first water jacket and the second water jacket are connected in parallel between the inlet pipe and the outlet pipe, and the second electrically controlled flow valve is disposed on the side of the second water jacket closer to the inlet pipe; the second electrically controlled flow valve is electrically connected to the control unit; The control unit is used to control the second electrically controlled flow valve to be in a closed state when the pipeline temperature information is greater than or equal to a first preset temperature and less than a second preset temperature, so that the first water jacket is connected to the connecting pipeline; and to control the second electrically controlled flow valve to be in a conducting state when the pipeline temperature information is greater than or equal to the second preset temperature, so that both the first water jacket and the second water jacket are connected to the connecting pipeline; wherein the second preset temperature is greater than the first preset temperature.

7. The engine cooling system according to claim 4, characterized in that, The control unit is used to control the electric water pump to operate in a third speed mode when the pipeline temperature information is greater than or equal to a first preset temperature and less than a second preset temperature; and to control the electric water pump to operate in a fourth speed mode when the pipeline temperature information is greater than or equal to the second preset temperature; the speed in the fourth speed mode is greater than the speed in the third speed mode; and the second preset temperature is greater than the first preset temperature.

8. The engine cooling system according to claim 4, characterized in that, The temperature sensing unit inside the pipeline is located in the electric temperature control unit.

9. A car, characterized in that, Includes the engine cooling system as described in any one of claims 1-8.

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