Intercooler temperature control device and method

Abstract

The present invention provides an intercooler temperature control device and method, belonging to the field of engine technology. The control device includes: an intercooler, one end of which is connected to a supercharger via an intercooler circuit; an intercooler bypass branch, one end of which is connected to the supercharger via the intercooler circuit; a two-way butterfly valve disposed downstream of the intercooler, with a first airflow channel of the two-way butterfly valve connected to the other end of the intercooler, a second airflow channel of the two-way butterfly valve connected to the other end of the intercooler bypass branch, and an output end of the two-way butterfly valve connected to an engine input end via an intake manifold; and a controller for determining an output value of the controller based on the difference between a measured intercooler temperature and a target intercooler temperature, and performing PID control on the opening of the two-way butterfly valve based on the output value and a preset opening of the two-way butterfly valve to adjust the measured intercooler temperature to the target intercooler temperature. By adding the two-way butterfly valve, the present invention eliminates the problem of icing of gas engines in low-temperature environments and improves economic efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of engines, and in particular to a device and method for controlling temperature after intercooling. Background Art

[0002] When gas engines operate at low or medium loads in cold regions, the post-intercooler temperature often drops below 0°C, sometimes even reaching -30°C. Water vapor from the exhaust gas recirculation (EGR) system, closed crankcase ventilation, and intake air often condenses into ice in areas such as the throttle, mixer, and intake manifold, blocking the intake line and causing actuator failure, sensor inefficiency, power loss, and even stalling. Furthermore, excessively low post-intercooler temperatures can lead to poor combustion and reduced thermal efficiency.

[0003] Therefore, it is necessary to provide a solution to prevent the icing problem of gas engines in low temperature environments and improve economic efficiency. Summary of the Invention

[0004] In view of this, it is necessary to provide a temperature control device and method after intercooling to achieve the purpose of eliminating the icing problem of the gas engine in a low-temperature environment and improving the economy.

[0005] In order to solve the above problems, the present invention provides a post-intercooling temperature control device, comprising:

[0006] An intercooler, one end of which is connected to the supercharger through an intercooling circuit;

[0007] An intercooler bypass branch, one end of which is connected to the supercharger through an intercooler circuit;

[0008] a two-way butterfly valve disposed downstream of the intercooler, wherein a first airflow channel of the two-way butterfly valve is connected to the other end of the intercooler, a second airflow channel of the two-way butterfly valve is connected to the other end of the intercooler bypass branch, and an output end of the two-way butterfly valve is connected to an engine input end through an intake manifold;

[0009] The controller is configured to determine an output value of the controller based on a difference between a measured post-intercooling temperature and a target post-intercooling temperature, and to perform PID adjustment on the opening of the two-way butterfly valve based on the output value of the controller and a preset opening of the two-way butterfly valve, so as to adjust the measured post-intercooling temperature to the target post-intercooling temperature.

[0010] In a possible implementation, the two-way butterfly valve includes: a transmission shaft, a first valve plate, a second valve plate, and a motor;

[0011] The first valve disc and the second valve disc are respectively arranged at two channels of the two-way butterfly valve, and the first valve disc and the second valve disc are both connected to the motor through the transmission shaft.

[0012] In a possible implementation, the first valve plate and the second valve plate are arranged at a phase angle that differs by 90°.

[0013] In a possible implementation, the two-way butterfly valve further includes:

[0014] The butterfly valve actuator is used to receive a control signal sent by the engine control unit and, based on the control signal, control the rotation of the motor to drive the transmission shaft to adjust the opening of the first valve plate and / or the second valve plate.

[0015] In a possible implementation, the intercooling temperature control device further includes:

[0016] The throttle valve is located at the entrance of the intake manifold.

[0017] In a possible implementation, the controller is further configured to obtain a preset opening of the two-way butterfly valve based on test data of the supercharger outlet temperature, the intercooler outlet temperature, the intake air flow rate, and the opening of the two-way butterfly valve.

[0018] In a possible implementation, the controller is further configured to determine the intercooler outlet temperature based on vehicle speed, the ambient temperature of the vehicle, atmospheric pressure, the pressure after the intercooler, and the intake air flow rate.

[0019] In a possible implementation, the controller is further configured to determine the supercharger outlet temperature based on the ambient temperature, atmospheric pressure, intercooler pressure, and intake air flow of the vehicle.

[0020] In a possible implementation, the controller is further configured to control the second air flow channel of the two-way butterfly valve to open when the ambient temperature of the vehicle is less than 0°C.

[0021] On the other hand, the present invention further provides a method for controlling the temperature after intercooling, which is applied to any of the control devices described above, and includes:

[0022] The controller determines an output value of the controller based on a difference between the measured intercooling temperature and the target intercooling temperature;

[0023] The controller performs PID adjustment on the opening of the two-way butterfly valve based on the output value of the controller and the preset opening of the two-way butterfly valve to adjust the measured post-intercooling temperature to the target post-intercooling temperature.

[0024] The beneficial effects of the above implementation are as follows: the intercooler post-temperature control device and method provided by the present invention are characterized by adding a two-way butterfly valve in the intercooler post-temperature control device. The two-way butterfly valve is disposed downstream of the intercooler, and a first airflow channel of the two-way butterfly valve is connected to the other end of the intercooler. The second airflow channel of the two-way butterfly valve is connected to the other end of the intercooler bypass branch. The output end of the two-way butterfly valve is connected to the engine input end through the intake manifold. A controller determines an output value of the controller based on the difference between the measured intercooler post-temperature and the target intercooler post-temperature. Based on the controller output value and a preset opening of the two-way butterfly valve, PID adjustment is performed on the opening of the two-way butterfly valve. This achieves precise control of the temperature of the supercharged gas entering the engine by allowing a portion of the supercharged gas to pass through the intercooler for cooling before passing through the throttle valve, while the other portion bypasses the intercooler through the bypass branch and is mixed by the two-way butterfly valve downstream of the intercooler, thereby eliminating the problem of gas engine icing in low-temperature environments and achieving the purpose of improving economic efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the 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 work.

[0026] Figure 1 A schematic structural diagram of an embodiment of the post-intercooling temperature control device provided by the present invention;

[0027] Figure 2 This is a flow chart of an embodiment of the post-intercooling temperature control method provided by the present invention;

[0028] Figure 3 This is a flow chart of another embodiment of the method for controlling temperature after intercooling provided by the present invention. DETAILED DESCRIPTION

[0029] The following will provide a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0030] In the description of the embodiments of the present application, unless otherwise specified, “a plurality of” means two or more.

[0031] The terms "including" and "having" and any variations thereof in the embodiments of the present invention are intended to cover non-exclusive inclusions. For example, a process, method, apparatus, product or device comprising a series of steps or modules is not necessarily limited to those steps or modules explicitly listed, but may include other steps or modules not explicitly listed or inherent to these processes, methods, products or devices.

[0032] The naming or numbering of the steps in the embodiments of the present invention does not mean that the steps in the method flow must be executed in the time / logical sequence indicated by the naming or numbering. The execution order of the named or numbered process steps can be changed according to the technical purpose to be achieved, as long as the same or similar technical effects can be achieved.

[0033] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present invention. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute a separate or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0034] The present invention provides a device and method for controlling the temperature after intercooling, which are described below.

[0035] like Figure 1 As shown, the present invention provides a temperature control device after intercooling, comprising:

[0036] An intercooler, one end of which is connected to the supercharger through an intercooling circuit;

[0037] An intercooler bypass branch, one end of which is connected to the supercharger through an intercooler circuit;

[0038] a two-way butterfly valve disposed downstream of the intercooler, wherein a first airflow channel of the two-way butterfly valve is connected to the other end of the intercooler, a second airflow channel of the two-way butterfly valve is connected to the other end of the intercooler bypass branch, and an output end of the two-way butterfly valve is connected to an engine input end through an intake manifold;

[0039] A controller is configured to determine an output value of the controller based on a difference between a measured post-intercooler temperature and a target post-intercooler temperature, and to perform PID (Proportional Integral Derivative) adjustment on the opening of the two-way butterfly valve based on the output value of the controller and a preset opening of the two-way butterfly valve to adjust the measured post-intercooler temperature to the target post-intercooler temperature; the controller may be an engine control unit (ECU) or a vehicle control unit (VCU).

[0040] It will be appreciated that the purpose of the post-intercooler temperature control device disclosed herein is to optimize the intake air temperature under low-temperature and low-load engine operating conditions. This device precisely controls the temperature of the post-intercooler air entering the engine by allowing a portion of the supercharged air to pass through the intercooler for cooling before passing through the throttle, while the remaining portion bypasses the intercooler through a bypass branch and is mixed downstream of the intercooler via a two-way butterfly valve.

[0041] The post-intercooling temperature control device provided by the present invention comprises:

[0042] Intercooler: Responsible for cooling the high-temperature and high-pressure gas after the supercharger, reducing its density and increasing the engine's air intake.

[0043] Intercooler bypass branch: provides a channel for uncooled pressurized gas to bypass the intercooler.

[0044] Two-way butterfly valve: Installed downstream of the intercooler, this valve is located at the intercooler outlet and regulates the mixture ratio of cooled and uncooled boost gas. The degree of opening of the butterfly valve determines the mixture ratio of the hot and cold gases. Features of a two-way butterfly valve include a valve body constructed of corrosion-resistant, high-temperature materials to withstand the high-temperature and high-pressure environment of the boost gas. The valve disc, acting as a control element, rotates to adjust the opening of the channel, thereby regulating flow. The edge of the valve disc is typically specially treated to reduce fluid resistance and improve sealing performance. A sealing ring or gasket is placed between the valve disc and the valve seat to effectively prevent leakage when closed. The butterfly valve's actuator receives signals from the engine control unit (ECU) to precisely control the rotation angle of the valve disc. A two-way butterfly valve provides two distinct flow paths to control the flow of gas in the intercooler bypass and the intercooler.

[0045] The PID control strategy for the two-way butterfly valve is as follows:

[0046] According to the measured temperature after intercooling T 21 and target intercooling temperature T 21Demand The deviation E is used to calculate the PI controller output value K2, where the proportional gain is a constant and the integral gain is determined by the intercooler temperature T 21 An array of decisions is generated. Furthermore, an anti-windup design is implemented to prevent overheating after the intercooler. Finally, the required opening of the two-way butterfly valve (K = K1 + K2) is output to the actuator to control the intercooler temperature.

[0047] The intercooler temperature control device provided by the present invention is additionally provided with a two-way butterfly valve, which is arranged downstream of the intercooler and has a first air flow channel of the two-way butterfly valve connected to the other end of the intercooler, and a second air flow channel of the two-way butterfly valve connected to the other end of the intercooler bypass branch, an output end of the two-way butterfly valve is connected to the engine input end through the intake manifold, and a controller determines an output value of the controller based on the difference between the measured intercooler temperature and the target intercooler temperature, and performs PID adjustment on the opening of the two-way butterfly valve based on the output value of the controller and a preset opening of the two-way butterfly valve, so as to achieve the goal of accurately controlling the temperature of the supercharged gas entering the engine by allowing a part of the supercharged gas to pass through the intercooler for cooling before passing through the throttle, while the other part bypasses the intercooler through the bypass branch and is mixed by the two-way butterfly valve downstream of the intercooler, thereby eliminating the problem of gas engine icing in a low-temperature environment and achieving the purpose of improving economy.

[0048] In some embodiments, the two-way butterfly valve includes: a transmission shaft, a first valve plate, a second valve plate, and a motor;

[0049] The first valve disc and the second valve disc are respectively arranged at two channels of the two-way butterfly valve, and the first valve disc and the second valve disc are both connected to the motor through the transmission shaft.

[0050] In some embodiments, the first valve plate and the second valve plate are arranged at a phase angle of 90°.

[0051] In some embodiments, the two-way butterfly valve further includes:

[0052] The butterfly valve actuator is used to receive a control signal sent by the engine control unit and, based on the control signal, control the rotation of the motor to drive the transmission shaft to adjust the opening of the first valve plate and / or the second valve plate.

[0053] It is understood that the two-way butterfly valve used in this invention comprises a valve body, a drive shaft, two valve discs (a first valve disc and a second valve disc), and a motor. The valve body has two independent airflow channels, each corresponding to a valve disc. The valve discs are connected to the motor via a drive shaft for synchronous control. The first and second valve discs are arranged at a 90° phase angle, ensuring that, by default, the valve disc in channel 1 is fully open, while the valve disc in channel 2 is fully closed.

[0054] In some embodiments, the post-intercooling temperature control device further includes:

[0055] The throttle valve is located at the entrance of the intake manifold.

[0056] It can be understood that the present invention allows a portion of the supercharged gas to be cooled through the intercooler before passing through the throttle valve, while the other portion bypasses the intercooler through a bypass branch and is mixed through a two-way butterfly valve downstream of the intercooler to accurately control the temperature of the supercharged gas entering the engine.

[0057] In some embodiments, the controller is further configured to obtain a preset opening of the two-way butterfly valve based on test data of the supercharger outlet temperature, the intercooler outlet temperature, the intake air flow rate, and the opening of the two-way butterfly valve.

[0058] It can be understood that firstly, based on the one-dimensional and three-dimensional joint simulation, the turbocharger outlet temperature, the intercooler outlet temperature, the intake air flow rate and the two-way butterfly valve opening test data are obtained, and then the two-way butterfly valve opening model K1= f (T1, T2, M Air ), and finally the statistical model was verified and modified through environmental chamber tests, and the preset opening of the two-way butterfly valve was obtained by fitting.

[0059] In some embodiments, the controller is further configured to determine the intercooler outlet temperature based on vehicle speed, vehicle ambient temperature, atmospheric pressure, intercooler pressure, and intake air flow.

[0060] It is understandable that according to the principle of heat transfer, the intercooler outlet temperature model T2 = f (V, T amb , M air , T1), thereby obtaining the intercooler outlet temperature.

[0061] In some embodiments, the controller is further configured to determine the supercharger outlet temperature based on the ambient temperature, atmospheric pressure, intercooler pressure, and intake air flow of the vehicle.

[0062] It is understandable that according to the principles of thermodynamics, the turbocharger outlet temperature model T1 = f (P0, T0, P 21 , M air ), and thus the supercharger outlet temperature is obtained.

[0063] In some embodiments, the controller is further configured to control the second air flow channel of the two-way butterfly valve to open when the ambient temperature of the vehicle is less than 0°C.

[0064] It can be understood that when the ambient temperature of the vehicle is less than 0° C., the second air flow channel of the two-way butterfly valve is controlled to open and the intercooler bypass is enabled; otherwise, the intercooler bypass is closed.

[0065] The important innovations of the present invention are:

[0066] Single drive shaft control: One drive shaft is used to simultaneously control the opening and closing of two valve plates, driven by a single motor, which simplifies the structure, reduces costs and improves reliability.

[0067] Flexible opening adjustment: Through the precise control of the motor, all valves can be adjusted to any opening between fully closed and fully open, including half-open state, to meet the gas flow requirements under different working conditions.

[0068] System layout: The two-way butterfly valve is arranged at the outlet of the intercooler.

[0069] Control Strategy: 1) The control strategy provided by this invention can be implemented using either an engine control unit (ECU) or a vehicle control unit (VCU). 2) A PI controller is designed to control the two-way butterfly valve, using the intercooler outlet temperature as the closed-loop target. This PI controller features "feedforward + closed-loop," variable parameters, and anti-integral windup. 3) Without adding new sensors, the turbocharger outlet temperature, intercooler outlet temperature, and two-way butterfly valve opening are calculated by constructing a model using existing signals, achieving feedforward control.

[0070] The present invention also provides a method for controlling the temperature after intercooling, which is applied to any of the control devices described above. Figure 2 As shown, the control method includes:

[0071] S201, the controller determines an output value of the controller based on a difference between the measured post-intercooling temperature and the target post-intercooling temperature;

[0072] S202 : The controller performs PID adjustment on the opening of the two-way butterfly valve based on the output value of the controller and the preset opening of the two-way butterfly valve, so as to adjust the measured post-intercooling temperature to the target post-intercooling temperature.

[0073] It is understood that the controller adjusts the opening of the two-way butterfly valve and can send instructions to the butterfly valve actuator of the two-way butterfly valve. The first valve disc and the second valve disc of the two-way butterfly valve are respectively arranged at the two channels of the two-way butterfly valve, and the first valve disc and the second valve disc are both connected to the motor via the transmission shaft. The actuator of the two-way butterfly valve controls the rotation of the motor, thereby achieving control of the transmission shaft. Through the precise control of the motor, all valve discs can be adjusted to any opening between fully closed and fully open, including a half-open state, to meet the gas flow requirements under different working conditions. A single transmission shaft is used to simultaneously control the opening and closing of the two valve discs. Driven by a single motor, the structure is simplified, the cost is reduced, and the reliability is improved.

[0074] The controller in this embodiment can be an engine control unit or a vehicle control unit. By designing a PI controller with the intercooler outlet temperature as the closed-loop target to control the two-way butterfly valve, without adding new sensors, only existing signals are used to calculate the supercharger outlet temperature, intercooler outlet temperature and two-way butterfly valve opening by constructing a model, thus realizing feedforward control.

[0075] The present invention provides a method for controlling the temperature after an intercooler. In an intercooler temperature control device, a two-way butterfly valve is added. The two-way butterfly valve is arranged downstream of the intercooler, and a first air flow channel of the two-way butterfly valve is connected to the other end of the intercooler, and a second air flow channel of the two-way butterfly valve is connected to the other end of the intercooler bypass branch. The output end of the two-way butterfly valve is connected to the engine input end through the intake manifold, and a controller determines an output value of the controller based on the difference between the measured intercooler temperature and the target intercooler temperature. Based on the output value of the controller and a preset opening of the two-way butterfly valve, PID adjustment is performed on the opening of the two-way butterfly valve, so as to achieve the goal of accurately controlling the temperature of the supercharged gas entering the engine by allowing a part of the supercharged gas to pass through the intercooler for cooling before passing through the throttle valve, while the other part bypasses the intercooler through the bypass branch and is mixed by the two-way butterfly valve downstream of the intercooler, thereby eliminating the problem of gas engine icing in a low-temperature environment and achieving the purpose of improving economy.

[0076] In some embodiments, the controller determines the intercooler outlet temperature based on vehicle speed, vehicle ambient temperature, atmospheric pressure, intercooler outlet pressure, and intake air flow.

[0077] It is understandable that according to the principle of heat transfer, the intercooler outlet temperature model T2 = f (V, T amb , M air , T1), thereby obtaining the intercooler outlet temperature.

[0078] In some embodiments, the controller determines the supercharger outlet temperature based on the ambient temperature of the vehicle, atmospheric pressure, pressure after intercooling, and intake air flow.

[0079] It is understandable that according to the principles of thermodynamics, the turbocharger outlet temperature model T1 = f (P0, T0, P 21 , M air ), and thus the supercharger outlet temperature is obtained.

[0080] In some embodiments, when the ambient temperature of the vehicle is less than 0° C., the controller controls the second air flow channel of the two-way butterfly valve to open.

[0081] It can be understood that when the ambient temperature of the vehicle is less than 0° C., the second air flow channel of the two-way butterfly valve is controlled to open and the intercooler bypass is enabled; otherwise, the intercooler bypass is closed.

[0082] In some embodiments, the working process of the post-intercooling temperature control device provided by the present invention is as follows:

[0083] Compressed gas diversion: The air pressurized by the supercharger is divided into two paths at a specific location, one path enters the intercooler, and the other path passes through the bypass branch.

[0084] Charged gas cooling: The charged gas entering the intercooler exchanges heat with the external environment through the cooling channel, and the temperature is significantly reduced.

[0085] Mixing of hot and cold boost gases: Cooled boost gases and uncooled boost gases are mixed at the outlet of a two-way butterfly valve. The valve opening is adjusted according to engine operating conditions and ambient temperature to optimize the mixing ratio.

[0086] Engine intake: The supercharged mixture, after temperature adjustment by the two-way butterfly valve, enters the engine intake manifold through the throttle valve and finally enters the cylinder for combustion and work.

[0087] like Figure 3 As shown, the specific method of controlling the temperature after intercooling can be summarized into the following steps:

[0088] Ambient temperature judgment:

[0089] The controller reads the actual ambient temperature T measured by the vehicle ambient temperature sensor amb , if T amb If the temperature is less than 0°C, the intercooler bypass is enabled, otherwise the intercooler bypass is closed.

[0090] Turbocharger outlet temperature model:

[0091] According to the principles of thermodynamics, the turbocharger outlet temperature model T1 = f (P0, T0, P 21 , M air ).

[0092] Intercooler outlet temperature model:

[0093] According to the heat transfer principle, the intercooler outlet temperature model T2 = f (V, T amb , M air , T1).

[0094] Two-way butterfly valve opening model:

[0095] Firstly, based on the one-dimensional and three-dimensional joint simulation, the test data of the turbocharger outlet temperature, the intercooler outlet temperature, the intake air flow rate and the two-way butterfly valve opening are obtained, and then the two-way butterfly valve opening model K1= f (T1, T2, M Air ), and finally the statistical model was verified and revised through environmental chamber experiments.

[0096] PID controller for two-way butterfly valve:

[0097] According to the measured temperature after intercooling T 21 and target intercooling temperature T 21Demand The deviation E is used to calculate the PI controller output value K2, where the proportional gain is a constant and the integral gain is determined by the intercooler temperature T 21 An array of decisions is generated. Furthermore, an anti-windup design is implemented to prevent overheating after the intercooler. Finally, the required opening of the two-way butterfly valve (K = K1 + K2) is output to the actuator to control the intercooler temperature.

[0098] After the implementation of the intercooler bypass device, two-way butterfly valve and intercooler post-temperature control strategy: 1) The gas engine will not freeze in the application scenario of an ambient temperature of -30°C; 2) The gas consumption of the gas engine operating in a low-temperature environment is improved.

[0099] The above is a detailed introduction to the post-intercooling temperature control device and method provided by the present invention. Specific examples are used herein to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method and core ideas of the present invention. At the same time, for those skilled in the art, according to the ideas of the present invention, there may be changes in the specific implementation methods and application scopes. In summary, the contents of this specification should not be understood as limiting the present invention.

Claims

1. A temperature control device after intercooling, characterized in that: include: An intercooler, one end of which is connected to the supercharger through an intercooling circuit; An intercooler bypass branch, one end of which is connected to the supercharger through an intercooler circuit; a two-way butterfly valve disposed downstream of the intercooler, wherein a first airflow channel of the two-way butterfly valve is connected to the other end of the intercooler, a second airflow channel of the two-way butterfly valve is connected to the other end of the intercooler bypass branch, and an output end of the two-way butterfly valve is connected to an engine input end through an intake manifold; a controller for determining an output value of the controller based on a difference between a measured post-intercooling temperature and a target post-intercooling temperature, and performing PID adjustment on an opening of the two-way butterfly valve based on the output value of the controller and a preset opening of the two-way butterfly valve to adjust the measured post-intercooling temperature to the target post-intercooling temperature; The controller is further used to obtain a preset opening of the two-way butterfly valve based on the supercharger outlet temperature, the intercooler outlet temperature, the intake air flow rate and the opening test data of the two-way butterfly valve by fitting.

2. The post-intercooling temperature control device according to claim 1, characterized in that: The two-way butterfly valve comprises: a transmission shaft, a first valve plate, a second valve plate and a motor; The first valve disc and the second valve disc are respectively arranged at two channels of the two-way butterfly valve, and the first valve disc and the second valve disc are both connected to the motor through the transmission shaft.

3. The post-intercooling temperature control device according to claim 2, characterized in that: The first valve plate and the second valve plate are arranged at a phase angle of 90°.

4. The post-intercooling temperature control device according to claim 3, characterized in that: The two-way butterfly valve further includes: The butterfly valve actuator is used to receive a control signal sent by the engine control unit and, based on the control signal, control the rotation of the motor to drive the transmission shaft to adjust the opening of the first valve plate and / or the second valve plate.

5. The post-intercooling temperature control device according to claim 1, characterized in that: Also includes: The throttle valve is located at the entrance of the intake manifold.

6. The post-intercooling temperature control device according to claim 1, characterized in that: The controller is further configured to determine the intercooler outlet temperature based on vehicle speed, vehicle ambient temperature, atmospheric pressure, intercooler pressure, and intake air flow.

7. The post-intercooling temperature control device according to claim 1, characterized in that: The controller is further configured to determine the supercharger outlet temperature based on the vehicle's ambient temperature, atmospheric pressure, intercooler pressure, and intake air flow.

8. The post-intercooling temperature control device according to claim 1, characterized in that: The controller is further configured to control the second air flow channel of the two-way butterfly valve to open when the ambient temperature of the vehicle is less than 0°C.

9. A method for controlling temperature after intercooling, characterized in that: The control method is applied to the control device according to any one of claims 1 to 8, and the control method includes: The controller determines an output value of the controller based on a difference between the measured intercooling temperature and the target intercooling temperature; The controller performs PID adjustment on the opening of the two-way butterfly valve based on the output value of the controller and the preset opening of the two-way butterfly valve to adjust the measured post-intercooling temperature to the target post-intercooling temperature.

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