Device and method for controlling temperature after intercooling

Abstract

The invention provides a post-intercooling temperature control device and method, and belongs to the technical field of engines, and the control device comprises an intercooler, an intercooler, an intercooler, an intercooler, an intercooler and a controller, one end of the intercooling bypass branch is communicated with the supercharger through an intercooling loop; the two-way butterfly valve is arranged on the downstream of the intercooler, a first airflow channel of the two-way butterfly valve is communicated with the other end of the intercooler, a second airflow channel of the two-way butterfly valve is communicated with the other end of the intercooling bypass branch, and the output end of the two-way butterfly valve is communicated with the input end of the engine through an air inlet manifold; and the controller is used for determining an output value of the controller based on a difference value between the actually-measured post-intercooling temperature and the target post-intercooling temperature, performing PID adjustment on the opening degree of the two-way butterfly valve based on the output value and the preset opening degree of the two-way butterfly valve, and adjusting the actually-measured post-intercooling temperature to the target post-intercooling temperature. The two-way butterfly valve is additionally arranged, so that the purpose of completely eradicating the freezing problem of the gas engine in a low-temperature environment and improving the economical efficiency is achieved.

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 are running at low or medium loads in cold regions, the temperature after intercooling is often below 0°C, and sometimes even reaches -30°C. Water vapor from the EGR (Exhaust Gas Re-circulation) system, closed crankcase ventilation, and intake air usually condenses into ice at the throttle, mixer, intake manifold, etc., blocking the intake line, causing actuator failure, sensor failure, power reduction, and even flameout. In addition, too low an intercooler temperature causes poor engine 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 post-intercooling temperature control device and method 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, on the one hand, the present invention provides a temperature control device after intercooling, comprising: 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 is arranged downstream of the intercooler, and 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 input end of the engine through an intake manifold; The controller is used 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.

[0006] In a possible implementation, the two-way butterfly valve includes: a transmission shaft, a first valve plate, a second valve plate and a motor; The first valve plate and the second valve plate are respectively arranged at two channels of the two-way butterfly valve, and the first valve plate and the second valve plate are both connected to the motor through the transmission shaft.

[0007] In a possible implementation manner, the first valve plate and the second valve plate are arranged at a phase angle that differs by 90°.

[0008] In a possible implementation, 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.

[0009] In a possible implementation, the intercooler temperature control device further includes: The throttle valve is arranged at the entrance of the intake manifold.

[0010] In a possible implementation, the controller is further used to fit 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.

[0011] In a possible implementation, the controller is further used to determine the intercooler outlet temperature based on the vehicle speed, the ambient temperature of the vehicle, the atmospheric pressure, the pressure after the intercooler, and the intake air flow.

[0012] In a possible implementation, the controller is further configured to determine the outlet temperature of the supercharger based on the ambient temperature of the vehicle, the atmospheric pressure, the pressure after the intercooler, and the intake air flow rate.

[0013] 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.

[0014] On the other hand, the present invention further provides a method for controlling the temperature after intercooling, the control method being applied to any of the control devices described above, the control method comprising: The controller determines an output value of the controller based on a difference between the measured intercooler post-temperature and the target intercooler post-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, so as to adjust the measured post-intercooling temperature to the target post-intercooling temperature.

[0015] The beneficial effect of adopting the above implementation mode is as follows: the intercooler temperature control device and method provided by the present invention, in which a two-way butterfly valve is added in the intercooler temperature control device, the two-way butterfly valve is arranged downstream of the intercooler and the first air flow channel of the two-way butterfly valve is connected to the other end of the intercooler, the 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 the controller determines the output value of the controller based on the difference between the measured intercooler temperature and the target intercooler temperature, and the PID adjustment is performed 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 achieve the goal of 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 through the two-way butterfly valve downstream of the intercooler, so as to accurately control the temperature of the supercharged gas entering the engine, thereby eliminating the problem of gas engine icing in a low temperature environment and achieving the purpose of improving economy. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] 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.

[0017] Figure 1 A schematic structural diagram of an embodiment of the post-intercooling temperature control device provided by the present invention; Figure 2 A flow chart of an embodiment of the post-intercooling temperature control method provided by the present invention; Figure 3 The present invention is a flow chart of another embodiment of the method for controlling the temperature after intercooling provided by the present invention. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. 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.

[0019] In the description of the embodiments of the present application, unless otherwise specified, “plurality” means two or more than two.

[0020] 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 equipment comprising a series of steps or modules is not necessarily limited to those steps or modules clearly listed, but may include other steps or modules not clearly listed or inherent to these processes, methods, products or equipment.

[0021] 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.

[0022] Reference to an "embodiment" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiment may be included in at least one embodiment of the present invention. The appearance of the phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0023] The present invention provides a device and method for controlling the temperature after intercooling, which are respectively described below.

[0024] like Figure 1 As shown, the present invention provides a temperature control device after intercooling, comprising: 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 is arranged downstream of the intercooler, and 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 input end of the engine through an intake manifold; A controller is used 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, so as 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).

[0025] It is understandable that the purpose of the intercooler temperature control device of the present invention is to optimize the intake air temperature under low temperature and low load conditions of the engine. The intercooler temperature control device provided by the present invention allows a portion of the supercharged gas to be cooled through the intercooler before passing through the throttle, while the other portion bypasses the intercooler through the bypass branch and is mixed through a two-way butterfly valve downstream of the intercooler, so as to accurately control the temperature of the supercharged gas entering the engine.

[0026] The post-intercooling temperature control device provided by the present invention comprises: Intercooler: responsible for cooling the high-temperature and high-pressure gas after the supercharger, reducing its density and increasing the engine's air intake.

[0027] Intercooler bypass branch: provides a passage for uncooled boost gas to bypass the intercooler.

[0028] Two-way butterfly valve: Installed downstream of the intercooler, the two-way butterfly valve is arranged at the outlet of the intercooler to adjust the mixing ratio of the cooled supercharged gas and the uncooled supercharged gas. The degree of opening of the butterfly valve determines the mixing ratio of the hot and cold gases. The characteristics of the two-way butterfly valve include: the valve body is made of corrosion-resistant and high-temperature resistant materials to withstand the high temperature and high pressure environment of the supercharged gas. The valve plate acts as a control element and changes the opening of the channel by rotation to adjust the flow. The edge of the valve plate is usually specially treated to reduce fluid resistance and improve sealing performance. A sealing ring or sealing gasket is arranged between the valve plate and the valve seat to ensure that leakage can be effectively prevented in the closed state. The actuator of the butterfly valve receives a signal from the engine control unit (ECU) to accurately control the rotation angle of the valve plate. The two-way butterfly valve is provided with two different air flow channels to control the gas flow in the intercooler bypass branch and the intercooler.

[0029] The PID control strategy for the two-way butterfly valve is as follows: According to the measured intercooling temperature 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 In addition, anti-integral saturation design is performed to avoid over-temperature after intercooling. Finally, the required opening of the two-way butterfly valve K = K1 + K2 is output to the actuator for intercooling temperature control.

[0030] A two-way butterfly valve is added to the intercooler temperature control device provided by the present invention. The two-way butterfly valve is arranged downstream of the intercooler and the first air flow channel of the two-way butterfly valve is connected to the other end of the intercooler, and the 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 the controller determines the output value of the controller based on the difference between the measured intercooler temperature and the target intercooler temperature, and PID adjustment is performed 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 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 before passing through the throttle, while the other part bypasses the intercooler through the bypass branch, and is mixed through the two-way butterfly valve downstream of the intercooler, so as to eliminate the problem of gas engine icing in a low temperature environment and achieve the purpose of improving economy.

[0031] In some embodiments, the two-way butterfly valve comprises: a transmission shaft, a first valve plate, a second valve plate and a motor; The first valve plate and the second valve plate are respectively arranged at two channels of the two-way butterfly valve, and the first valve plate and the second valve plate are both connected to the motor through the transmission shaft.

[0032] In some embodiments, the first valve plate and the second valve plate are arranged at a phase angle that differs by 90°.

[0033] In some embodiments, 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.

[0034] It can be understood that the two-way butterfly valve selected in the present invention includes a valve body, a transmission shaft, two valve plates (a first valve plate and a second valve plate), and a motor. Two independent air flow channels are arranged inside the valve body, each channel corresponds to a valve plate, and the valve plates are connected to the motor through the transmission shaft to achieve synchronous control. The first valve plate and the second valve plate are arranged at a phase angle of 90° to ensure that in the default state, the valve plate of channel 1 is fully open, while the valve plate of channel 2 is fully closed.

[0035] In some embodiments, the post-intercooling temperature control device further includes: The throttle valve is arranged at the entrance of the intake manifold.

[0036] 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 the bypass branch and is mixed through the two-way butterfly valve downstream of the intercooler to accurately control the temperature of the supercharged gas entering the engine.

[0037] In some embodiments, the controller is further used to fit 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.

[0038] It can be understood that 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 is verified and modified through environmental chamber test, and the preset opening of the two-way butterfly valve is obtained by fitting.

[0039] In some embodiments, the controller is further used to determine the intercooler outlet temperature based on the vehicle speed, the ambient temperature of the vehicle, the atmospheric pressure, the pressure after the intercooler, and the intake air flow.

[0040] It can be understood 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.

[0041] In some embodiments, the controller is further used to determine the supercharger outlet temperature based on the ambient temperature of the vehicle, atmospheric pressure, pressure after intercooling, and intake air flow.

[0042] It can be understood that according to the principles of thermodynamics, the turbocharger outlet temperature model T1 = f (P0, T0, P 21 , M air ), thereby obtaining the supercharger outlet temperature.

[0043] In some embodiments, the controller is further used to control the opening of the second air flow channel of the two-way butterfly valve when the ambient temperature of the vehicle is less than 0°C.

[0044] 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.

[0045] The important innovations of the present invention are: Single drive shaft control: One drive shaft is used to control the opening and closing of two valve plates at the same time, and it is driven by a single motor, which simplifies the structure, reduces costs and improves reliability.

[0046] Flexible opening adjustment: Through precise control of the motor, all valves can be adjusted to any opening from fully closed to fully open, including half-open state, to meet the gas flow requirements under different working conditions.

[0047] System layout: The two-way butterfly valve is arranged at the outlet of the intercooler.

[0048] Control strategy: 1) The control strategy provided by the present invention can be implemented by either an engine control unit (ECU) or a vehicle control unit (VCU). 2) A PI controller with the intercooler post-closed-loop target is designed to control the two-way butterfly valve. The PI controller has the technical features of "feedforward + closed loop", variable parameters, and anti-integral saturation. 3) 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 achieving feedforward control.

[0049] 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 comprises: 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; 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.

[0050] It is understandable that the controller adjusts the opening of the two-way butterfly valve, and the controller can send instructions to the butterfly valve actuator of the two-way butterfly valve. The first valve plate and the second valve plate of the two-way butterfly valve are respectively arranged at the two channels of the two-way butterfly valve, and the first valve plate and the second valve plate are connected to the motor through the transmission shaft. The actuator of the two-way butterfly valve controls the rotation of the motor to achieve control of the transmission shaft. Through the precise control of the motor, all valve plates 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. A transmission shaft is used to control the opening and closing of two valve plates at the same time, and a single motor is used to drive, which simplifies the structure, reduces costs, and improves reliability.

[0051] The controller in this embodiment can be an engine control unit or a vehicle control unit. The two-way butterfly valve is controlled by designing a PI controller with the intercooler post-temperature as the closed-loop target. Without adding new sensors, only existing signals are used to calculate the supercharger outlet temperature, the intercooler outlet temperature and the two-way butterfly valve opening by constructing a model, thereby realizing feedforward control.

[0052] The present invention provides a method for controlling the temperature after intercooling. In the temperature control device after intercooling, a two-way butterfly valve is added. The two-way butterfly valve is arranged downstream of the intercooler and the first air flow channel of the two-way butterfly valve is connected to the other end of the intercooler. The 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 input end of the engine through the intake manifold. The controller determines the output value of the controller based on the difference between the measured temperature after intercooling and the target temperature after intercooling. The PID adjustment is performed 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 achieve the goal of 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 through the two-way butterfly valve downstream of the intercooler, so as to accurately control the temperature of the supercharged gas entering the engine, thereby eliminating the problem of gas engine icing in a low temperature environment and achieving the purpose of improving economy.

[0053] In some embodiments, the controller determines the intercooler outlet temperature based on the vehicle speed, the ambient temperature of the vehicle, the atmospheric pressure, the pressure after the intercooler, and the intake air flow.

[0054] It can be understood 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.

[0055] In some embodiments, the controller determines the supercharger outlet temperature based on the ambient temperature of the vehicle, the atmospheric pressure, the pressure after the intercooler, and the intake air flow rate.

[0056] It can be understood that according to the principles of thermodynamics, the turbocharger outlet temperature model T1 = f (P0, T0, P 21 , M air ), thereby obtaining the supercharger outlet temperature.

[0057] 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.

[0058] 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.

[0059] In some embodiments, the working process of the post-intercooling temperature control device provided by the present invention is as follows: 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.

[0060] 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.

[0061] Mixing of hot and cold boost gas: The cooled boost gas and the uncooled boost gas are mixed at the outlet of the two-way butterfly valve. The opening of the butterfly valve is adjusted according to the engine operating conditions and ambient temperature to optimize the mixing ratio.

[0062] 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.

[0063] like Figure 3 As shown, the specific post-intercooling temperature control method can be summarized into the following steps: Ambient temperature judgment: The controller reads the actual ambient temperature T measured by the vehicle ambient temperature sensor amb , if T amb <0°C, the intercooler bypass is enabled, otherwise the intercooler bypass is closed.

[0064] Supercharger outlet temperature model: According to the principles of thermodynamics, the turbocharger outlet temperature model T1 = f (P0, T0, P 21 , M air ).

[0065] Intercooler outlet temperature model: According to the principle of heat transfer, the intercooler outlet temperature model T2 = f (V, T amb , M air , T1).

[0066] Two-way butterfly valve opening model: 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, MAir ), and finally the statistical model was verified and corrected through environmental chamber experiments.

[0067] PID controller for two-way butterfly valve: According to the measured intercooling temperature 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 In addition, anti-integral saturation design is performed to avoid over-temperature after intercooling. Finally, the required opening of the two-way butterfly valve K = K1 + K2 is output to the actuator for intercooling temperature control.

[0068] 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 -30℃ ambient temperature; 2) the gas consumption of the gas engine working in low temperature environment is improved.

[0069] 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 of the present invention and its core idea. At the same time, for those skilled in the art, according to the idea of ​​the present invention, there will be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as a limitation on 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 is arranged downstream of the intercooler, and 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 input end of the engine through an intake manifold; The controller is used 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.

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 plate and the second valve plate are respectively arranged at two channels of the two-way butterfly valve, and the first valve plate and the second valve plate 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 comprises: 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 arranged at the entrance of the intake manifold.

6. The post-intercooling temperature control device according to any one of claims 1 to 5, characterized in that: The controller is also used to fit the 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.

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

8. The post-intercooling temperature control device according to claim 6, characterized in that: The controller is also used to determine the outlet temperature of the supercharger based on the ambient temperature of the vehicle, the atmospheric pressure, the pressure after the intercooler and the intake air flow.

9. The post-intercooling temperature control device according to claim 6, characterized in that: The controller is also used to control the opening of the second air flow channel of the two-way butterfly valve when the ambient temperature of the vehicle is less than 0°C.

10. 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 9, and the control method includes: The controller determines an output value of the controller based on a difference between the measured intercooler post-temperature and the target intercooler post-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, so as to adjust the measured post-intercooling temperature to the target post-intercooling temperature.

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