Intake manifold temperature control device and method

Abstract

The present invention provides an intake manifold temperature control device and method, belonging to the field of engine technology. The device includes: an intercooler, one end of which is connected to the intake manifold; an intercooler bypass branch, one end of which is connected to the intake manifold; a two-way butterfly valve, the other ends of the intercooler and the intercooler bypass branch respectively connected to the supercharger via the two-way butterfly valve; and a controller for determining a pre-control opening of the two-way butterfly valve based on a target intercooling efficiency and the engine's intake air flow rate, and determining a post-intercooling temperature deviation based on a temperature deviation between the target intake manifold temperature and the actual intake manifold temperature. Based on the post-intercooling temperature deviation, a deviation PI control parameter is determined, and a PID control strategy is used to control the opening of the two-way butterfly valve based on the pre-control opening of the two-way butterfly valve and the deviation PI control parameter. By adding the two-way butterfly valve, the present invention solves the technical problem that existing solutions cannot quickly increase the engine's intake air temperature, thereby causing ice formation in the gas engine mixer and EGR valve.

Description

Technical Field

[0001] The present invention relates to the technical field of engines, and in particular to an intake manifold temperature control device and method. Background Art

[0002] Natural gas engines contain high levels of water in their exhaust gas recirculation (EGR) systems. In winter, freezing temperatures can easily cause ice to form in the vehicle's mixer, throttle, and EGR valve, leading to vehicle malfunctions, torque limitations, and even malfunction. Existing solutions typically regulate intake manifold temperature by controlling the opening of the EGR valve. This has a narrow adjustment range and is ineffective in effectively raising intake air temperature in cold temperatures. Consequently, existing solutions cannot quickly raise engine intake air temperature and address the issue of icing in gas engine mixers and EGR valves. Summary of the Invention

[0003] In view of this, it is necessary to provide an intake manifold temperature control device and method to solve the technical problem that the existing solution cannot quickly increase the intake temperature of the engine, thereby causing the gas engine mixer and EGR valve to freeze.

[0004] In order to solve the above problems, the present invention provides an intake manifold temperature control device, comprising:

[0005] An intercooler, one end of which is connected to the intake manifold;

[0006] An intercooler bypass branch, one end of which is connected to the intake manifold;

[0007] a two-way butterfly valve, through which the intercooler and the other end of the intercooler bypass branch are respectively connected to the supercharger;

[0008] The controller is configured to determine a pre-control opening of the two-way butterfly valve based on a target intercooling efficiency and an intake air flow rate of the engine, determine a post-intercooling temperature deviation based on a temperature deviation between a target intake manifold temperature and an actual intake manifold temperature, determine a deviation PI control parameter based on the post-intercooling temperature deviation, and control the opening of the two-way butterfly valve using a PID control strategy based on the pre-control opening of the two-way butterfly valve and the deviation PI control parameter to adjust the actual intake manifold temperature to the target intake manifold temperature.

[0009] In a possible implementation, the two-way butterfly valve includes: a transmission shaft, a first valve plate, a second valve plate, and a motor;

[0010] The first valve disc and the second valve disc are respectively arranged at two air flow 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.

[0011] In a possible implementation, the first valve plate and the second valve plate are arranged at a phase angle that differs by 90°.

[0012] In a possible implementation, the two-way butterfly valve further includes:

[0013] The butterfly valve actuator is used to receive a control signal sent by the controller 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.

[0014] In one possible implementation, the intake manifold temperature control device further includes:

[0015] An EGR valve is provided on an EGR circuit, which is a pipeline between the exhaust gas turbocharger circuit at the output end of the engine and the intake manifold;

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

[0017] In a possible implementation, the controller is further configured to determine the intake air flow of the engine based on the intake manifold pressure and the intake manifold temperature.

[0018] In a possible implementation, the controller is further configured to determine a target intercooling efficiency based on an intercooler inlet temperature, an engine intake air flow rate, an ambient temperature, a vehicle speed, and a target post-intercooling temperature.

[0019] In a possible implementation, the controller is further configured to determine the intercooler inlet temperature based on the supercharger inlet pressure, the supercharger inlet temperature, the intercooler post-pressure, and the engine intake air flow.

[0020] In a possible implementation, the controller is further configured to determine a target post-intercooler temperature based on a target intake manifold temperature and an actual post-EGR cooler temperature.

[0021] On the other hand, the present invention further provides an intake manifold temperature control method, which is applied to any of the above-mentioned intake manifold temperature control devices, and includes:

[0022] The controller determines the pre-control opening of the two-way butterfly valve based on the target intercooling efficiency and the intake air flow of the engine;

[0023] The controller determines a post-intercooling temperature deviation based on a temperature deviation between a target intake manifold temperature and an actual intake manifold temperature;

[0024] The controller determines a deviation PI control parameter based on the post-intercooling temperature deviation;

[0025] The controller adopts a PID control strategy based on the pre-controlled opening of the two-way butterfly valve and the deviation PI control parameter to control the opening of the two-way butterfly valve to adjust the actual intake manifold temperature to the target intake manifold temperature.

[0026] The beneficial effects of the above implementation are as follows: the intake manifold temperature control device and method provided by the present invention are provided with a two-way butterfly valve, and the intercooler and the intercooler bypass branch are respectively connected to the supercharger through the two-way butterfly valve; the present invention determines the pre-control opening of the two-way butterfly valve based on the target intercooling efficiency and the engine intake flow rate, and determines the intercooling temperature deviation based on the temperature deviation between the target intake manifold temperature and the actual intake manifold temperature, and determines the deviation PI control parameter based on the intercooling temperature deviation; and based on the pre-control opening of the two-way butterfly valve and the deviation PI control parameter, adopts a PID control strategy to control the opening of the two-way butterfly valve to adjust the actual intake manifold temperature to the target intake manifold temperature, and controls the opening of the intercooler bypass branch through the two-way butterfly valve, thereby controlling the proportion of intake air at the engine compressor outlet that does not pass through the intercooler, which can quickly increase the engine intake temperature and thereby solve the icing problem of the gas engine mixer, EGR valve, etc. In low temperature environments, the engine's intake temperature can be increased to a certain extent, the combustion process can be optimized, while intercooler energy loss can be reduced and fuel economy can be increased. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] 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.

[0028] Figure 1 A schematic structural diagram of an embodiment of an intake manifold temperature control device provided by the present invention;

[0029] Figure 2 A schematic diagram of the control strategy of the intake manifold temperature control device provided by the present invention;

[0030] Figure 3 This is a flow chart of an embodiment of the intake manifold temperature control method provided by the present invention. DETAILED DESCRIPTION

[0031] 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.

[0032] In the description of the embodiments of the present application, unless otherwise specified, “a plurality of” means two or more.

[0033] 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.

[0034] 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.

[0035] 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.

[0036] The present invention provides an intake manifold temperature control device and method, which are described below.

[0037] like Figure 1 As shown, the present invention provides an intake manifold temperature control device, comprising:

[0038] An intercooler, one end of which is connected to the intake manifold;

[0039] An intercooler bypass branch, one end of which is connected to the intake manifold;

[0040] a two-way butterfly valve, through which the intercooler and the other end of the intercooler bypass branch are respectively connected to the supercharger;

[0041] The controller is configured to determine a pre-controlled opening of the two-way butterfly valve based on a target intercooling efficiency and an engine intake air flow rate, determine a post-intercooling temperature deviation based on a temperature deviation between a target intake manifold temperature and an actual intake manifold temperature, determine a deviation PI control parameter based on the post-intercooling temperature deviation, and control the opening of the two-way butterfly valve using a PID control strategy based on the pre-controlled opening of the two-way butterfly valve and the deviation PI control parameter to adjust the actual intake manifold temperature to the target intake manifold temperature. The controller may be an engine control unit (ECU) or a vehicle control unit (VCU).

[0042] The PID control strategy is based on a PID controller (Proportion-Integration-Differentiation), which consists of a proportional unit (P), an integral unit (I), and a differential unit (D). PID controllers are primarily suitable for systems with essentially linear dynamic characteristics that do not change over time. The deviation PI control parameter refers to the deviation control parameter associated with the proportional and integral units.

[0043] It is understandable that the intake manifold temperature control device provided by the present invention takes the engine intake manifold temperature as the control target, and controls the opening of the intercooler bypass branch (intercooler bypass device) to control the proportion of intake air at the engine compressor outlet that does not pass through the intercooler, thereby achieving the purpose of quickly increasing the engine intake temperature and solving the problem of icing of the gas engine mixer, EGR (Exhaust Gas Recirculation) valve, etc.

[0044] Specifically, the intercooler bypass integrated device is designed to rapidly increase the intake air temperature under low-temperature, low-load engine operating conditions. This solution allows a portion of the supercharged air to be cooled through the intercooler 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. This controls the temperature of the supercharged air entering the intake manifold, thereby increasing the overall engine intake temperature.

[0045] The intake manifold temperature control device provided by the present invention is based on an intercooler bypass device. It uses the engine's intake manifold temperature as the control target. By controlling the opening of the intercooler bypass branch, it controls the proportion of intake air at the engine compressor outlet that does not pass through the intercooler, thereby achieving the purpose of rapidly increasing the engine's intake air temperature and solving the problem of icing in the gas engine mixer, EGR valve, etc. The specific scheme is as follows:

[0046] Intake manifold temperature control device, including:

[0047] Intercooler: Responsible for cooling the high-temperature and high-pressure gas from the supercharger, reducing its density and increasing the engine's air intake.

[0048] Intercooler bypass branch: provides an airflow path for uncooled pressurized gas, allowing it to bypass the intercooler.

[0049] Two-way butterfly valve: Installed downstream of the intercooler, it is used to adjust the mixing ratio of cooled boost gas and uncooled boost gas. The degree of opening of the butterfly valve determines the mixing ratio of the hot and cold gases. Features 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 boost gas. The butterfly plate acts as a control element, changing the opening of the air flow channel by rotation, thereby adjusting the flow rate of the exhaust gas. The edge of the butterfly plate is usually specially treated to reduce fluid resistance and improve sealing performance. A sealing ring or sealing gasket is provided between the butterfly plate and the valve seat to ensure that exhaust gas leakage can be effectively prevented in the closed state. The actuator of the butterfly valve (such as electric, pneumatic or hydraulic drive) receives a signal from the controller to accurately control the rotation angle of the butterfly plate to achieve precise adjustment of the exhaust flow rate.

[0050] The working process of the intake manifold temperature control device is as follows:

[0051] Compressed gas diversion: The air after being pressurized by the supercharger is divided into two paths at a specific position, one path enters the intercooler, and the other passes through the bypass branch.

[0052] Charged gas cooling: The charged gas entering the intercooler exchanges heat with the external environment through the cooling air flow channel, and the temperature is significantly reduced.

[0053] 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.

[0054] Exhaust Gas Recirculation: Mixed exhaust gas enters the intake manifold through the EGR valve, where it mixes with fresh air and re-enters the combustion chamber. The EGR valve opening is adjusted in real time by a controller based on engine speed, load, temperature, and other parameters to control the amount of exhaust gas recirculated.

[0055] 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.

[0056] The present invention uses a controller to determine the pre-controlled opening of the two-way butterfly valve based on the target intercooling efficiency and the engine's intake air flow rate. It also determines a post-intercooling temperature deviation based on the temperature deviation between the target intake manifold temperature and the actual intake manifold temperature. A deviation PI control parameter is then determined based on the post-intercooling temperature deviation. A PID control strategy is then used to control the opening of the two-way butterfly valve based on the pre-controlled opening of the two-way butterfly valve and the deviation PI control parameter to adjust the actual intake manifold temperature to the target intake manifold temperature. The opening of the intercooling bypass branch is controlled by the two-way butterfly valve, thereby controlling the proportion of intake air at the engine compressor outlet that does not pass through the intercooler. This can quickly increase the engine's intake air temperature, thereby resolving icing issues with the gas engine's mixer, EGR valve, and other components. This approach elevates the engine's intake air temperature to a certain extent in low-temperature environments, optimizing the combustion process while reducing intercooling energy losses and improving fuel economy.

[0057] In some embodiments, the two-way butterfly valve includes: a transmission shaft, a first valve plate, a second valve plate, and a motor;

[0058] The first valve disc and the second valve disc are respectively arranged at two air flow 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.

[0059] Furthermore, the first valve plate and the second valve plate are arranged at a phase angle of 90°.

[0060] It is understood that the two-way butterfly valve used in the present 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 airflow channel 1 is fully open, while the valve disc in airflow channel 2 is fully closed.

[0061] 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.

[0062] 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.

[0063] In some embodiments, the two-way butterfly valve further includes:

[0064] The butterfly valve actuator is used to receive a control signal sent by the controller 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.

[0065] In some embodiments, the intake manifold temperature control device further includes:

[0066] An EGR valve is provided on an EGR circuit, which is a pipeline between the exhaust gas turbocharger circuit at the output end of the engine and the intake manifold;

[0067] The throttle valve is located at the entrance of the intake manifold.

[0068] It is understandable that the EGR valve is located after the two-way butterfly valve and is used to control the amount of mixed exhaust gas entering the intake manifold. A mixer is also provided on the intake manifold between the throttle and the engine.

[0069] The throttle valve is located after the two-way butterfly valve and is used to control the amount of mixed pressurized gas entering the intake manifold.

[0070] In some embodiments, the controller is further configured to determine an intake air flow of the engine based on the intake manifold pressure and the intake manifold temperature.

[0071] In some embodiments, the controller is further configured to determine a target intercooling efficiency based on an intercooler inlet temperature, an intake air flow rate of the engine, an ambient temperature, a vehicle speed, and a target post-intercooling temperature.

[0072] In some embodiments, the controller is further configured to determine an intercooler inlet temperature based on the supercharger inlet pressure, the supercharger inlet temperature, the intercooler post-pressure, and the engine intake air flow.

[0073] In some embodiments, the controller is further configured to determine a target post-intercooler temperature based on the target intake manifold temperature and an actual post-EGR cooler temperature.

[0074] In one embodiment, the control strategy of the intake manifold temperature control device is as follows:

[0075] like Figure 2 As shown, the specific control method can be summarized into the following steps:

[0076] Ambient temperature judgment:

[0077] When the ambient temperature Tamb ≥ 0°C, the intercooler bypass enable switch is set to 0, closing the intercooler bypass.

[0078] When the ambient temperature Tamb is less than 0°C, the intercooler bypass enable switch is set to 1, and the intercooler bypass is turned on.

[0079] Intake air flow acquisition:

[0080] According to the current engine intake manifold pressure P4 and intake manifold temperature T4, the intake air flow rate Mair is calculated using the speed density method.

[0081] Intercooler inlet temperature calculation:

[0082] The intercooler inlet temperature T1 is calculated based on the supercharger inlet pressure P0, supercharger inlet temperature T0, intercooler pressure P1, and intake air flow MAir.

[0083] Calculation of target intercooling temperature:

[0084] The target intercooler post-temperature is estimated based on the target intake manifold temperature and the actual EGR cooler post-temperature (EGR valve pre-temperature).

[0085] Target intercooling efficiency calculation:

[0086] According to the intercooler inlet temperature T1, the engine intake flow M Air 、Ambient temperature T amb , vehicle speed V, and target intercooling temperature, calculate the target intercooling efficiency η.

[0087] Calculation of pre-control opening K1 of intercooler bypass two-way butterfly valve:

[0088] By using the target intercooling efficiency η, the engine intake air flow M Air : Check the pre-control opening MAP table of the intercooler bypass two-way butterfly valve to obtain the pre-control opening K 1， The pre-control opening MAP of the intercooler bypass two-way butterfly valve is filled in by calibrating the vehicle in a low-temperature environment.

[0089] Intake manifold temperature PID closed-loop control:

[0090] Based on the deviation δ between the target intake manifold temperature T4* and the actual intake manifold temperature T4 1， Calculate the temperature deviation after intercooling δ 2， Obtain the deviation PI control parameter K2 by looking up the table.

[0091] Calculate the final two-way butterfly valve control opening K:

[0092] The final opening K is equal to the sum of pre-control K1 and PID output K2.

[0093] Continuous monitoring and adjustment:

[0094] During the entire process, the system will continuously monitor key parameters such as ambient temperature, intake temperature, intercooler temperature, and EGR cooler temperature, and dynamically adjust the intercooler bypass opening K as needed to ensure that the engine can achieve better intake manifold temperature control under various operating conditions.

[0095] In summary, compared to existing technical solutions, the solution provided by the present invention boasts a high degree of integration, significantly reducing the length and complexity of the bypass piping, and lowering the difficulty and cost of piping layout. This high level of integration not only reduces system complexity but also improves overall system reliability and maintainability. By tightly integrating the two-way butterfly valve with the intercooler circuit, a fully functional, compact, integrated module is formed. This modular design simplifies installation and improves the overall performance and reliability of the system. It also facilitates subsequent maintenance and replacement, as the entire module can be disassembled and assembled as a single unit.

[0096] Based on the intercooler bypass branch, according to the ambient temperature, engine intake volume, engine water temperature, and the intake manifold temperature as the control target, the pre-control opening of the intercooler bypass branch is checked according to the difference between the target temperatures, and then the PID control parameters are queried according to the intake manifold temperature. This can achieve control of any opening of the intercooler bypass branch with good control accuracy and fast control response.

[0097] The intake manifold temperature control device provided by the present invention utilizes an intercooler bypass device. By installing a two-way butterfly valve downstream of the two-way intercooler, the device uses the engine's intake manifold temperature as the control target. By controlling the opening of the intercooler bypass branch, the device controls the proportion of intake air at the engine compressor outlet that bypasses the intercooler. This device can quickly increase the engine's intake air temperature, resolving issues such as icing in the gas engine's mixer and EGR valve. In low-temperature environments, this device raises the engine's intake air temperature to a certain extent, optimizing the combustion process while reducing intercooler energy losses and improving fuel economy.

[0098] The present invention also provides an intake manifold temperature control method, which is applied to the above-mentioned intake manifold temperature control device. Figure 3 As shown, the method includes:

[0099] S301, the controller determines the pre-control opening of the two-way butterfly valve based on the target intercooling efficiency and the intake air flow of the engine;

[0100] S302, the controller determines a temperature deviation after intercooling based on a temperature deviation between a target intake manifold temperature and an actual intake manifold temperature;

[0101] S303, the controller determines a deviation PI control parameter based on the post-intercooling temperature deviation;

[0102] S304 : The controller adopts a PID control strategy to control the opening of the two-way butterfly valve based on the pre-controlled opening of the two-way butterfly valve and the deviation PI control parameter, so as to adjust the actual intake manifold temperature to the target intake manifold temperature.

[0103] The intake manifold temperature control method provided by the present invention comprises a controller that determines a pre-controlled opening of a two-way butterfly valve based on a target intercooling efficiency and the engine's intake air flow rate, determines a post-intercooling temperature deviation based on the temperature deviation between the target intake manifold temperature and the actual intake manifold temperature, and determines a deviation PI control parameter based on the post-intercooling temperature deviation. Furthermore, a PID control strategy is employed to control the opening of the two-way butterfly valve based on the pre-controlled opening of the two-way butterfly valve and the deviation PI control parameter to adjust the actual intake manifold temperature to the target intake manifold temperature. The opening of the intercooling bypass branch is controlled by the two-way butterfly valve, thereby controlling the proportion of intake air at the engine compressor outlet that does not pass through the intercooler. This method can rapidly increase the engine's intake air temperature, thereby resolving icing issues in the gas engine's mixer, EGR valve, and other components. This method raises the engine's intake air temperature to a certain extent in low-temperature environments, optimizing the combustion process while reducing intercooling energy losses and improving fuel economy.

[0104] Furthermore, the controller implements the steps of the intake manifold temperature control method, which can refer to the above Figure 2 The steps corresponding to the strategy shown.

[0105] Those skilled in the art will appreciate that all or part of the process steps of the above-described embodiments can be implemented by instructing related hardware through a computer program, and the program can be stored in a computer-readable storage medium, such as a magnetic disk, an optical disk, a read-only memory, or a random access memory.

[0106] The above is a detailed introduction to the intake manifold 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, based on 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. An intake manifold temperature control device, characterized in that: include: An intercooler, one end of which is connected to the intake manifold; An intercooler bypass branch, one end of which is connected to the intake manifold; a two-way butterfly valve, through which the intercooler and the other end of the intercooler bypass branch are respectively connected to the supercharger; The controller is configured to determine a pre-control opening of the two-way butterfly valve based on a target intercooling efficiency and an intake air flow rate of the engine, determine a post-intercooling temperature deviation based on a temperature deviation between a target intake manifold temperature and an actual intake manifold temperature, determine a deviation PI control parameter based on the post-intercooling temperature deviation, and control the opening of the two-way butterfly valve using a PID control strategy based on the pre-control opening of the two-way butterfly valve and the deviation PI control parameter to adjust the actual intake manifold temperature to the target intake manifold temperature.

2. The intake manifold 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 air flow 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 intake manifold 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 intake manifold 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 controller 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 intake manifold temperature control device according to claim 1, characterized in that: Also includes: An EGR valve is provided on an EGR circuit, which is a pipeline between the exhaust gas turbocharger circuit at the output end of the engine and the intake manifold; The throttle valve is located at the entrance of the intake manifold.

6. The intake manifold temperature control device according to claim 1, characterized in that: The controller is further configured to determine the intake air flow of the engine based on the intake manifold pressure and the intake manifold temperature.

7. The intake manifold temperature control device according to any one of claims 1 to 6, characterized in that: The controller is further configured to determine a target intercooling efficiency based on an intercooler inlet temperature, an engine intake air flow rate, an ambient temperature, a vehicle speed, and a target post-intercooling temperature.

8. The intake manifold temperature control device according to claim 7, characterized in that: The controller is further configured to determine the intercooler inlet temperature based on the supercharger inlet pressure, the supercharger inlet temperature, the intercooler post-pressure, and the engine intake air flow.

9. The intake manifold temperature control device according to claim 7, characterized in that: The controller is further configured to determine a target post-intercooler temperature based on a target intake manifold temperature and an actual post-EGR cooler temperature.

10. A method for controlling intake manifold temperature, characterized in that: The intake manifold temperature control method is applied to the intake manifold temperature control device according to any one of claims 1 to 9, and the method comprises: The controller determines the pre-control opening of the two-way butterfly valve based on the target intercooling efficiency and the intake air flow of the engine; The controller determines a post-intercooling temperature deviation based on a temperature deviation between a target intake manifold temperature and an actual intake manifold temperature; The controller determines a deviation PI control parameter based on the post-intercooling temperature deviation; The controller adopts a PID control strategy based on the pre-controlled opening of the two-way butterfly valve and the deviation PI control parameter to control the opening of the two-way butterfly valve to adjust the actual intake manifold temperature to the target intake manifold temperature.

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