Turbocharger cooling system and method of cooling the same

Abstract

The present disclosure relates to the technical field of engine turbocharging, and particularly relates to a turbocharger cooling system and a cooling method thereof. The turbocharger cooling system comprises: a water cooling circulation loop, a turbine, a radiator and an electronic water pump are arranged on the water cooling circulation loop, the turbine comprises a double-layer shell, and the double-layer shell has a gas flow channel and a cooling liquid flow channel which are arranged in parallel and are separated by a partition; and a controller, the controller is electrically connected with the electronic water pump, and the controller is used for adjusting the rotating speed of the electronic water pump according to the exhaust gas flow of the engine. The present disclosure can improve the intelligence of temperature adjustment of the turbocharger, so that the turbocharger can be in an optimal performance state, and the reliability of the turbocharger is effectively improved.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of engine turbocharging, and particularly relates to a turbocharger cooling system and a cooling method thereof. BACKGROUND

[0002] With the rapid development of the automobile industry, the performance requirements of engines are becoming higher and higher, and turbocharging technology has become an important means to improve the performance of engines. However, the problem of the operation of the turbocharger in a high-temperature environment is one of the key factors affecting the performance and service life of the engine. As one of the core components of the engine, the heat dissipation performance of the turbocharger directly affects the efficiency and service life of the turbocharger.

[0003] The conventional turbocharger cooling method mainly relies on the simple operation of turning on or off the electronic water pump according to the engine speed, intake pressure, flow and other parameters, which is not intelligent enough for the temperature regulation of the turbocharger, and cannot make the turbocharger be in an optimal performance state, thereby failing to guarantee the reliability of the turbocharger. SUMMARY

[0004] In order to solve the above technical problems, the present disclosure provides a turbocharger cooling system and a cooling method thereof, which can improve the intelligence of the temperature regulation of the turbocharger, make the turbocharger be in an optimal performance state, and effectively improve the reliability of the turbocharger.

[0005] In a first aspect, the embodiments of the present disclosure provide a turbocharger cooling system, comprising: a water cooling circulation loop, a turbine, a radiator and an electronic water pump are arranged on the water cooling circulation loop, the turbine comprises a double-layer shell, and the double-layer shell has a gas flow channel and a cooling liquid flow channel which are separated and arranged in parallel; a controller, the controller is electrically connected with the electronic water pump, and the controller is used for adjusting the speed of the electronic water pump according to the exhaust gas flow of the engine.

[0006] In some embodiments, further comprising a compressor, an air flow meter is arranged on the air inlet pipeline of the compressor, and a temperature and pressure sensor is arranged on the air outlet pipeline of the compressor; the controller is electrically connected with the air flow meter and the temperature and pressure sensor, and the controller is used for calculating the exhaust gas flow of the engine according to the flow fed back by the air flow meter and the pressure fed back by the temperature and pressure sensor.

[0007] In some embodiments, further comprising a temperature sensor, the temperature sensor is used for detecting the temperature of the gas flow channel in the turbine; the controller is electrically connected with the temperature sensor, and the controller is further used for adjusting the speed of the electronic water pump according to the temperature fed back by the temperature sensor.

[0008] In some embodiments, a controllable flow valve is also provided on the water-cooled circulation loop, the controllable flow valve being located between the electric water pump and the turbine; the controller is electrically connected to the controllable flow valve, and the controller is also used to adjust the opening degree of the controllable flow valve according to the exhaust gas flow rate of the engine and the temperature feedback from the temperature sensor.

[0009] Secondly, embodiments of this disclosure provide a turbocharger cooling method applied to the turbocharger cooling system provided in this disclosure, comprising the following steps: adjusting the speed of an electronic water pump according to the exhaust gas flow rate of the engine.

[0010] In some embodiments, the method further includes: recording the exhaust gas flow rate of the engine and the corresponding safe flow rate in the coolant channel to form a correspondence table, wherein when the flow rate in the coolant channel is the safe flow rate, the temperature of the gas channel is less than a safe threshold; and adjusting the speed of the electronic water pump according to the exhaust gas flow rate of the engine based on the correspondence table.

[0011] In some embodiments, the turbocharger cooling system further includes a compressor, an air flow meter is provided in the compressor's inlet pipe, and a temperature and pressure sensor is provided in the compressor's outlet pipe; the controller is electrically connected to the air flow meter and the temperature and pressure sensor; the cooling method further includes: calculating the engine's exhaust gas flow rate based on the flow rate fed back by the air flow meter and the pressure fed back by the temperature and pressure sensor.

[0012] In some embodiments, the turbocharger cooling system further includes a temperature sensor, and the controller is electrically connected to the temperature sensor; the cooling method further includes: adjusting the speed of the electronic water pump according to the temperature fed back by the temperature sensor, wherein the temperature fed back by the temperature sensor is the temperature of the gas flow channel in the turbine.

[0013] In some embodiments, a controllable flow valve is also provided in the water-cooled circulation loop, the controllable flow valve being located between the electric water pump and the turbine; the controller is electrically connected to the controllable flow valve; the cooling method further includes: adjusting the opening degree of the controllable flow valve according to the exhaust gas flow rate of the engine and the temperature feedback from the temperature sensor.

[0014] In some embodiments, the method further includes: comparing the temperature fed back by the temperature sensor with a first threshold; when the temperature fed back by the temperature sensor is greater than the first threshold, adjusting the speed of the electronic water pump and the opening of the controllable flow valve to their maximum values; after a first time period, when the temperature fed back by the temperature sensor is greater than the first threshold, cutting off engine fuel injection and issuing an alarm.

[0015] The technical solution provided in this disclosure has the following advantages compared with the prior art:

[0016] In the turbocharger cooling system disclosed herein, the controller can adjust the speed of the electric water pump based on the engine's exhaust gas flow rate, thereby adjusting the pump speed based on the turbine's workload. This, in turn, regulates the flow rate of the coolant, enabling precise control of the coolant flow rate and thus achieving precise control of the turbine temperature. This ensures optimal turbine cooling efficiency, preventing turbocharger performance degradation and shortened lifespan due to excessively high turbine temperatures, while also preventing excessively low turbine temperatures from affecting turbocharger efficiency. Consequently, the turbocharger can adapt to changes in operating charge and ambient temperature, exhibiting good adaptability. Attached Figure Description

[0017] The accompanying drawings, which are incorporated in and form a part of this specification, illustrate embodiments consistent with this disclosure and, together with the description, serve to explain the principles of this disclosure.

[0018] To more clearly illustrate the technical solutions in the embodiments of this disclosure or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the structure of a turbocharger cooling system provided in an embodiment of this disclosure;

[0020] Figure 2 This is a schematic flowchart of a turbocharger cooling method provided in this disclosure;

[0021] Figure 3 This is a schematic diagram of another turbocharger cooling method provided in this disclosure;

[0022] Figure 4 This is a schematic diagram of another turbocharger cooling method provided in this disclosure;

[0023] Figure 5 This is a schematic diagram of another turbocharger cooling method disclosed herein. Detailed Implementation

[0024] To better understand the above-mentioned objectives, features, and advantages of this disclosure, the solutions disclosed herein will be further described below. It should be noted that, unless otherwise specified, the embodiments and features described herein can be combined with each other.

[0025] Numerous specific details are set forth in the following description in order to provide a full understanding of this disclosure, but this disclosure may also be implemented in other ways different from those described herein; obviously, the embodiments in the specification are only some, and not all, of the embodiments of this disclosure.

[0026] Figure 1 This is a schematic diagram of a turbocharger cooling system provided in an embodiment of this disclosure, with reference to... Figure 1 This embodiment provides a turbocharger cooling system, including:

[0027] A water-cooled circulation loop is provided with a turbine 10, a radiator 20 and an electric water pump 30. The turbine 10 includes a double-layered shell, and the double-layered shell has a gas flow channel 11 and a coolant flow channel 12 that are separated and arranged in parallel.

[0028] The controller 40 is electrically connected to the electric water pump 30 and is used to adjust the speed of the electric water pump 30 according to the exhaust gas flow of the engine.

[0029] Specifically, the air participating in combustion flows from the air filter through the compressor 50, then from the compressor 50 through the intercooler, and finally to each cylinder of the engine. The exhaust gas after combustion flows from each cylinder to the turbocharger turbine 10, and then from the turbine 10 is discharged. The gas flow paths of the air filter, compressor 50, intercooler, and each cylinder of the engine are existing technologies, and other related technologies will not be described in detail here.

[0030] In the turbocharger cooling system provided in this embodiment, the turbine 10 includes a double-layered housing. The double-layered housing has a gas flow channel 11 and a coolant flow channel 12 arranged in parallel and separated. In the water-cooled circulation loop, the coolant can flow from the electric water pump 30 to the coolant flow channel 12 of the turbine 10, and then from the coolant flow channel 12 of the turbine 10 to the radiator 20. The arrangement of the coolant flow channel 12 in the turbine 10 can cool the turbine 10, ensuring that it can operate continuously and reliably under high temperature and high load working environment.

[0031] The electric water pump 30 is electrically connected to the controller 40, which adjusts the speed of the electric water pump 30 according to the engine's exhaust gas flow rate. The controller 40 can, for example, be an Electronic Control Unit (ECU). By adjusting the speed of the electric water pump 30 based on the engine's exhaust gas flow rate, the controller 40 can adjust the speed of the electric water pump 30 based on the turbine 10's workload, thereby adjusting the coolant flow rate in the coolant passage 12. This precise control of the coolant flow rate allows for precise temperature control of the turbine 10, ensuring optimal cooling efficiency and preventing overheating that could lead to turbocharger performance degradation and shortened lifespan. Conversely, it prevents underheating that could negatively impact turbocharger efficiency. This allows the turbocharger to adapt to changes in operating charge and ambient temperature, exhibiting good adaptability.

[0032] Optionally, the controller 40 records the engine's exhaust gas flow rate and the corresponding safe flow rate in the coolant channel 12 to form a correspondence table. When the flow rate in the coolant channel 12 is at the safe flow rate, the temperature of the gas channel 11 is less than a safe threshold. That is, the controller 40 forms a correspondence table based on experimentally recorded engine exhaust gas flow rates of different values ​​and their corresponding safe flow rates in the coolant channel 12. The correspondence table records the safe flow rates in the coolant channel 12 for each different engine exhaust gas flow rate value.

[0033] It should be noted that the safe flow rate in the coolant flow channel 12 can be set specifically according to factors such as the material of the turbine 10, and this disclosure does not impose any specific limitations.

[0034] The controller 40 adjusts the speed of the electronic water pump 30 based on a mapping table according to the engine's exhaust gas flow rate. Specifically, the controller 40 obtains the corresponding safe flow rate in the coolant passage 12 based on the engine's exhaust gas flow rate, and adjusts the speed of the electronic water pump 30 accordingly. This ensures that the flow rate in the coolant passage 12 is within the safe range, keeping the temperature of the gas passage 11 below a safe threshold. This precise control of the coolant flow rate allows for accurate temperature control of the turbine 10, maintaining optimal cooling efficiency and preventing turbocharger performance degradation and shortened lifespan due to excessively high turbine 10 temperatures. Conversely, it prevents excessively low turbine 10 temperatures from affecting turbocharger efficiency. This allows the turbocharger to adapt to changes in operating charge and ambient temperature, exhibiting good adaptability.

[0035] Continue to refer to Figure 1In some alternative embodiments, the turbocharger cooling system further includes a compressor 50, with an air flow meter 51 installed in the air inlet pipe of the compressor 50 and a temperature and pressure sensor 52 installed in the air outlet pipe of the compressor 50.

[0036] The controller 40 is electrically connected to the air flow meter 51 and the temperature and pressure sensor 52. The controller 40 is used to calculate the exhaust gas flow of the engine based on the flow rate fed back by the air flow meter 51 and the pressure fed back by the temperature and pressure sensor 52.

[0037] The compressor 50 is connected to the electronic actuator 80, which is electrically connected to the controller 40. The controller 40 adjusts the position of the electronic actuator 80 according to the engine torque requirements. An air flow meter 51 is installed in the air inlet pipe of the compressor 50. The air flow meter 51 can measure the flow rate of the gas entering the compressor 50. A temperature and pressure sensor 52 is installed in the air outlet pipe of the compressor 50. The temperature and pressure sensor 52 can detect the temperature and pressure of the pressurized gas. The controller 40 can calculate the exhaust gas flow rate of the engine based on the flow rate fed back by the air flow meter 51 and the pressure fed back by the temperature and pressure sensor 52.

[0038] Continue to refer to Figure 1 In some alternative embodiments, the turbocharger cooling system also includes a temperature sensor 60 for detecting the temperature of the gas flow passage 11 in the turbine 10;

[0039] The controller 40 is electrically connected to the temperature sensor 60, and the controller 40 is also used to adjust the speed of the electronic water pump 30 according to the temperature feedback from the temperature sensor 60.

[0040] The turbocharger cooling system also includes a temperature sensor 60, which is used to detect the temperature of the gas flow channel 11 in the turbine 10 in real time. The controller 40 is electrically connected to the temperature sensor 60 and can further adjust the speed of the electric water pump 30 based on the temperature detected by the temperature sensor 60 in the gas flow channel 11 of the turbine 10. When the temperature sensor 60 detects that the temperature of the gas flow channel 11 in the turbine 10 is higher than a safe threshold, the speed of the electric water pump 30 can be further increased; when the temperature sensor 60 detects that the temperature of the gas flow channel 11 in the turbine 10 is lower, the speed of the electric water pump 30 can be further decreased. This allows for more precise control of the coolant flow rate, thereby achieving precise control of the turbine 10 temperature, ensuring optimal cooling efficiency of the turbine 10, and avoiding turbocharger performance degradation and shortened lifespan caused by excessively high turbine 10 temperatures. Simultaneously, it prevents excessively low turbine 10 temperatures from affecting turbocharger efficiency.

[0041] Meanwhile, the temperature sensor 60 can detect the temperature of the gas flow channel 11 in the turbine 10 in real time. When the temperature is too high or too low, it can issue an alarm in time to remind the driver or maintenance personnel to deal with it in time and avoid the performance degradation and damage of the turbocharger.

[0042] Continue to refer to Figure 1 In some optional embodiments, a controllable flow valve 70 is also provided on the water cooling circulation loop, and the controllable flow valve 70 is located between the electric water pump 30 and the turbine 10.

[0043] The controller 40 is electrically connected to the controllable flow valve 70. The controller 40 is also used to adjust the opening degree of the controllable flow valve 70 based on the exhaust gas flow rate of the engine and the temperature feedback from the temperature sensor 60. Optionally, the controller 40 can control the opening degree of the controllable flow valve 70 by adjusting the duty cycle of the control signal.

[0044] A controllable flow valve 70 is also provided on the water-cooled circulation loop. The controllable flow valve 70 is located between the electric water pump 30 and the turbine 10. That is, the coolant in the water-cooled circulation loop can flow from the electric water pump 30 to the controllable flow valve 70, then from the controllable flow valve 70 to the coolant flow channel 12 of the turbine 10, and then from the coolant flow channel 12 of the turbine 10 to the radiator 20. The controller 40 is electrically connected to the controllable flow valve 70. The controller 40 is also used to adjust the opening of the controllable flow valve 70 according to the exhaust gas flow of the engine and the temperature feedback from the temperature sensor 60, thereby adjusting the coolant flow in the coolant passage 12. The coolant flow can be adjusted simultaneously by the speed of the electric water pump 30 and the opening of the controllable flow valve 70, which can further improve the control accuracy of the coolant flow and achieve precise control of the turbine 10 temperature. This ensures that the turbine 10 cooling efficiency is in a better state, avoiding the problem of turbocharger performance degradation and shortened service life caused by excessively high turbine 10 temperature. At the same time, it avoids the turbine 10 temperature being too low, which would affect the turbocharger efficiency.

[0045] Figure 2 This is a schematic flowchart of a turbocharger cooling method provided in this disclosure. The turbocharger cooling method provided in this disclosure can be applied to any turbocharger cooling system provided in the embodiments of this disclosure, and will not be described in detail here. Figure 2 As shown, the cooling method includes the following steps:

[0046] Step S110: Adjust the speed of the electronic water pump according to the exhaust gas flow rate of the engine.

[0047] Specifically, in combination Figure 1 and Figure 2The controller 40 can adjust the speed of the electric water pump 30 based on the engine's exhaust gas flow rate, thereby adjusting the speed of the electric water pump 30 based on the turbine 10's workload. This, in turn, regulates the coolant flow rate in the coolant passage 12, enabling precise control of the coolant flow rate. This allows for precise temperature control of the turbine 10, ensuring optimal cooling efficiency and preventing turbocharger performance degradation and shortened lifespan due to excessively high turbine 10 temperatures. Simultaneously, it prevents excessively low turbine 10 temperatures from negatively impacting turbocharger efficiency. This allows the turbocharger to adapt to variations in operating charge and ambient temperature, exhibiting good adaptability.

[0048] Figure 3 This is a schematic flowchart of another turbocharger cooling method provided in this disclosure, see reference. Figure 3 In some alternative embodiments, the turbocharger cooling method further includes:

[0049] Step S100: Record the exhaust gas flow rate of the engine and the corresponding safe flow rate in the coolant channel to form a correspondence table. When the flow rate in the coolant channel is the safe flow rate, the temperature of the gas channel is less than the safe threshold.

[0050] Step S111: Adjust the speed of the electronic water pump according to the engine exhaust gas flow rate based on the correspondence table.

[0051] Specifically, in combination Figure 1 and Figure 3 The controller 40 records the engine's exhaust gas flow rate and the corresponding safe flow rate in the coolant channel 12, forming a correspondence table. When the flow rate in the coolant channel 12 is at the safe flow rate, the temperature of the gas channel 11 is less than a safe threshold. In other words, the controller 40 forms a correspondence table based on experimentally recorded engine exhaust gas flow rates of different values ​​and their corresponding safe flow rates in the coolant channel 12. The table records the safe flow rates in the coolant channel 12 for each different engine exhaust gas flow rate value.

[0052] The controller 40 adjusts the speed of the electronic water pump 30 based on a mapping table according to the engine's exhaust gas flow rate. Specifically, the controller 40 obtains the corresponding safe flow rate in the coolant passage 12 based on the engine's exhaust gas flow rate, and adjusts the speed of the electronic water pump 30 accordingly. This ensures that the flow rate in the coolant passage 12 is within the safe range, keeping the temperature of the gas passage 11 below a safe threshold. This precise control of the coolant flow rate allows for accurate temperature control of the turbine 10, maintaining optimal cooling efficiency and preventing turbocharger performance degradation and shortened lifespan due to excessively high turbine 10 temperatures. Conversely, it prevents excessively low turbine 10 temperatures from affecting turbocharger efficiency. This allows the turbocharger to adapt to changes in operating charge and ambient temperature, exhibiting good adaptability.

[0053] Continue to refer to Figure 1 In some alternative embodiments, the turbocharger cooling system further includes a compressor 50, with an air flow meter 51 installed in the air inlet pipe of the compressor 50 and a temperature and pressure sensor 52 installed in the air outlet pipe of the compressor 50; the controller 40 is electrically connected to the air flow meter 51 and the temperature and pressure sensor 52.

[0054] Figure 4 This is a schematic flow diagram of another turbocharger cooling method disclosed herein, see reference. Figure 4 Turbocharger cooling methods also include:

[0055] Step S120: Calculate the engine exhaust gas flow rate based on the flow rate fed back by the air flow meter and the pressure fed back by the temperature and pressure sensors.

[0056] Specifically, in combination Figure 1 and Figure 4 The compressor 50 is connected to the electronic actuator 80, which is electrically connected to the controller 40. The controller 40 adjusts the position of the electronic actuator 80 according to the engine torque requirements. An air flow meter 51 is installed in the inlet pipe of the compressor 50 to measure the flow rate of the gas entering the compressor 50. A temperature and pressure sensor 52 is installed in the outlet pipe of the compressor 50 to detect the temperature and pressure of the pressurized gas. The controller 40 calculates the engine exhaust gas flow rate based on the flow rate feedback from the air flow meter 51 and the pressure feedback from the temperature and pressure sensor 52. Therefore, the controller 40 can subsequently adjust the speed of the electronic water pump 30 based on the engine exhaust gas flow rate.

[0057] Continue to refer to Figure 1 In some alternative embodiments, the turbocharger cooling system also includes a temperature sensor 60, and the controller 40 is electrically connected to the temperature sensor 60.

[0058] refer toFigure 4 Turbocharger cooling methods also include:

[0059] Step S130: Adjust the speed of the electronic water pump according to the temperature feedback from the temperature sensor, wherein the temperature feedback from the temperature sensor is the temperature of the gas flow channel in the turbine.

[0060] Specifically, the turbocharger cooling system also includes a temperature sensor 60, which is used to detect the temperature of the gas flow channel 11 in the turbine 10 in real time. The controller 40 is electrically connected to the temperature sensor 60 and can further adjust the speed of the electric water pump 30 based on the temperature detected by the temperature sensor 60 in the gas flow channel 11 of the turbine 10. When the temperature sensor 60 detects that the temperature of the gas flow channel 11 in the turbine 10 is higher than a safe threshold, the speed of the electric water pump 30 can be further increased; when the temperature sensor 60 detects that the temperature of the gas flow channel 11 in the turbine 10 is lower, the speed of the electric water pump 30 can be further decreased. This allows for more precise control of the coolant flow rate, thereby achieving precise control of the turbine 10 temperature, ensuring optimal cooling efficiency of the turbine 10, and avoiding turbocharger performance degradation and shortened lifespan caused by excessively high turbine 10 temperatures. Simultaneously, it prevents excessively low turbine 10 temperatures from affecting turbocharger efficiency.

[0061] Continue to refer to Figure 1 In some optional embodiments, a controllable flow valve 70 is also provided on the water cooling circulation loop, and the controllable flow valve 70 is located between the electric water pump 30 and the turbine 10; the controller 40 is electrically connected to the controllable flow valve 70.

[0062] refer to Figure 4 Turbocharger cooling methods also include:

[0063] Step S140: Adjust the opening of the controllable flow valve according to the exhaust gas flow rate of the engine and the temperature feedback from the temperature sensor.

[0064] Specifically, a controllable flow valve 70 is also provided on the water-cooled circulation loop. The controllable flow valve 70 is located between the electric water pump 30 and the turbine 10. That is, the coolant in the water-cooled circulation loop can flow from the electric water pump 30 to the controllable flow valve 70, then from the controllable flow valve 70 to the coolant flow channel 12 of the turbine 10, and then from the coolant flow channel 12 of the turbine 10 to the radiator 20. The controller 40 is electrically connected to the controllable flow valve 70. The controller 40 is also used to adjust the opening of the controllable flow valve 70 according to the exhaust gas flow of the engine and the temperature feedback from the temperature sensor 60, thereby adjusting the coolant flow of the controllable flow valve 70. The coolant flow can be adjusted simultaneously by the speed of the electric water pump 30 and the opening of the controllable flow valve 70, which can further improve the control accuracy of the coolant flow and achieve precise control of the turbine 10 temperature. This ensures that the turbine 10 cooling efficiency is in an optimal state, avoiding the problem of turbocharger performance degradation and shortened service life caused by excessively high turbine 10 temperature. At the same time, it avoids the turbine 10 temperature being too low, which would affect the turbocharger efficiency.

[0065] Figure 5 This is a schematic flow diagram of another turbocharger cooling method disclosed herein, see reference. Figure 5 In some alternative embodiments, the turbocharger cooling method further includes:

[0066] Step S150: Compare the temperature fed back by the temperature sensor with the first threshold.

[0067] Step S160: When the temperature fed back by the temperature sensor is greater than the first threshold, adjust the speed of the electronic water pump and the opening of the controllable flow valve to the maximum value.

[0068] Step S170: After the first time period, when the temperature fed back by the temperature sensor is greater than the first threshold, cut off the engine fuel injection and sound an alarm.

[0069] Specifically, in combination Figure 1 and Figure 5The temperature sensor 60 can detect the temperature of the gas flow channel 11 in the turbine 10 in real time. Comparing the temperature fed back by the temperature sensor 60 with a first threshold, if the temperature fed back by the temperature sensor 60 exceeds the first threshold, indicating that the temperature of the gas flow channel 11 in the turbine 10 is too high, the controller 40 will trigger a protection strategy to prevent engine damage or performance impact. This will adjust the speed of the electronic water pump 30 and the opening of the controllable flow valve 70 to their maximum values, maximizing cooling of the gas flow channel 11 in the turbine 10. After the first time period, if the temperature fed back by the temperature sensor 60 is still greater than the first threshold, engine fuel injection will be cut off to stop combustion to ensure the safe operation of the turbocharger and engine. An alarm will also be triggered to remind the driver or maintenance personnel to handle the situation promptly, avoiding performance degradation and damage to the turbocharger. This system has early warning and fault diagnosis functions, enabling timely detection and handling of potential faults and improving operational safety.

[0070] It should be noted that the first threshold can be set specifically according to factors such as the material of the turbine 10, and this disclosure does not impose specific limitations on it. The specific time of the first time period can be set according to production needs, and this disclosure will not elaborate on it here.

[0071] The above description is merely a preferred embodiment of this disclosure and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of this disclosure is not limited to technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the above-described concept. For example, technical solutions formed by substituting the above features with (but not limited to) technical features disclosed in this disclosure that have similar functions.

[0072] Furthermore, while the operations are described in a specific order, this should not be construed as requiring these operations to be performed in the specific order shown or in a sequential order. In certain environments, multitasking and parallel processing may be advantageous. Similarly, while several specific implementation details are included in the above discussion, these should not be construed as limiting the scope of this disclosure. Certain features described in the context of individual embodiments may also be implemented in combination in a single embodiment. Conversely, various features described in the context of a single embodiment may also be implemented individually or in any suitable sub-combination in multiple embodiments.

[0073] Although the subject matter has been described using language specific to structural features and / or methodological logic, it should be understood that the subject matter defined in the appended claims is not necessarily limited to the specific features or actions described above. Rather, the specific features and actions described above are merely illustrative examples of implementing the claims.

[0074] The above description is merely a specific embodiment of this disclosure, enabling those skilled in the art to understand or implement it. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this disclosure. Therefore, this disclosure is not to be limited to the embodiments described herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A turbocharger cooling system, characterized in that, include: A water-cooled circulation loop is provided, which includes a turbine, a radiator and an electric water pump. The turbine includes a double-layered housing, and the double-layered housing has a gas flow channel and a coolant flow channel that are separated and arranged in parallel. A controller, electrically connected to the electronic water pump, is used to adjust the speed of the electronic water pump according to the exhaust gas flow rate of the engine.

2. The turbocharger cooling system according to claim 1, characterized in that, It also includes a compressor, the air inlet pipe of which is equipped with an air flow meter, and the air outlet pipe of which is equipped with a temperature and pressure sensor. The controller is electrically connected to the air flow meter and the temperature and pressure sensor. The controller is used to calculate the exhaust gas flow of the engine based on the flow rate fed back by the air flow meter and the pressure fed back by the temperature and pressure sensor.

3. The turbocharger cooling system according to claim 2, characterized in that, It also includes a temperature sensor for detecting the temperature of the gas flow path in the turbine; The controller is electrically connected to the temperature sensor, and the controller is also used to adjust the speed of the electronic water pump according to the temperature feedback from the temperature sensor.

4. The turbocharger cooling system according to claim 3, characterized in that, A controllable flow valve is also provided on the water-cooled circulation loop, and the controllable flow valve is located between the electronic water pump and the turbine; The controller is electrically connected to the controllable flow valve, and the controller is also used to adjust the opening degree of the controllable flow valve according to the exhaust gas flow rate of the engine and the temperature fed back by the temperature sensor.

5. A turbocharger cooling method, characterized in that, The turbocharger cooling system applied to any one of claims 1-4 comprises the following steps: The speed of the electronic water pump is adjusted according to the exhaust gas flow rate of the engine.

6. The turbocharger cooling method according to claim 5, characterized in that, Also includes: A correspondence table is formed by recording the exhaust gas flow rate of the engine and the corresponding safe flow rate in the coolant flow channel. When the flow rate in the coolant flow channel is the safe flow rate, the temperature of the gas flow channel is less than the safe threshold. The rotational speed of the electronic water pump is adjusted according to the exhaust gas flow rate of the engine based on the corresponding table.

7. The turbocharger cooling method according to claim 5, characterized in that, The turbocharger cooling system also includes a compressor, the compressor's inlet pipe is equipped with an air flow meter, and the compressor's outlet pipe is equipped with a temperature and pressure sensor; the controller is electrically connected to the air flow meter and the temperature and pressure sensor. The cooling method further includes: The exhaust gas flow rate of the engine is calculated based on the flow rate fed back by the air flow meter and the pressure fed back by the temperature and pressure sensor.

8. The turbocharger cooling method according to claim 7, characterized in that, The turbocharger cooling system also includes a temperature sensor, and the controller is electrically connected to the temperature sensor. The cooling method further includes: The rotational speed of the electronic water pump is adjusted according to the temperature fed back by the temperature sensor, wherein the temperature fed back by the temperature sensor is the temperature of the gas flow channel in the turbine.

9. The turbocharger cooling method according to claim 8, characterized in that, A controllable flow valve is also provided on the water-cooled circulation loop, and the controllable flow valve is located between the electronic water pump and the turbine; the controller is electrically connected to the controllable flow valve; The cooling method further includes: The opening degree of the controllable flow valve is adjusted according to the exhaust gas flow rate of the engine and the temperature feedback from the temperature sensor.

10. The turbocharger cooling method according to claim 9, characterized in that, Also includes: Compare the temperature fed back by the temperature sensor with the first threshold; When the temperature fed back by the temperature sensor is greater than the first threshold, the speed of the electronic water pump and the opening of the controllable flow valve are both adjusted to their maximum values. After the first time period, when the temperature reported by the temperature sensor is greater than the first threshold, the engine fuel injection is cut off and an alarm is triggered.

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