A surge control system and control method thereof

Abstract

The present invention discloses a surge control system and a control method thereof. The surge control system includes: a surge valve, a three-way valve, and a control unit; the first end of the surge valve is connected to the first pipeline between the throttle and the intercooler; the second end of the surge valve is connected to the second pipeline between the throttle and the intake manifold; the third end of the surge valve is connected to the third pipeline between the intake duct and the supercharger; the three-way valve is arranged between the second end of the surge valve and the second pipeline; the inlet end of the three-way valve is connected to the second end of the surge valve; the first outlet end of the three-way valve is connected to the second pipeline; the second outlet end of the three-way valve is connected to the third pipeline; and the control unit is in communication with the three-way valve. The technical solution of the present invention solves the noise problem caused by the critical opening of the surge valve, reduces the surge risk of the entire pipeline, and improves driving comfort.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle control, and in particular to a surge control system and a control method thereof. Background Art

[0002] In order to eliminate the supercharger surge phenomenon caused by throttle closing, the whole vehicle usually installs a surge valve in front of the throttle, thereby improving the reliability of the supercharger and throttle and extending the service life of the supercharger. Because the opening of the mechanical surge valve is controlled by the pressure difference before and after the throttle, there will be a critical opening state. When the whole vehicle is running at a small throttle, this critical opening state is very likely to occur, causing irregular vibration of the valve body and abnormal noise in the intake pipe. The resulting noise, vibration and harshness (NVH) problems seriously affect driving comfort. Summary of the Invention

[0003] The present invention provides a surge control system and a control method thereof, so as to solve the problem in the prior art that a surge valve generates abnormal noise in a critically open state.

[0004] According to one aspect of the present invention, there is provided a surge control system, comprising a surge valve, a three-way valve and a control unit;

[0005] The first end of the surge valve is connected to a first pipeline between the throttle valve and the intercooler; the second end of the surge valve is connected to a second pipeline between the throttle valve and the intake manifold; the third end of the surge valve is connected to a third pipeline between the intake duct and the supercharger;

[0006] The three-way valve is arranged between the second end of the surge valve and the second pipeline; the inlet end of the three-way valve is connected to the second end of the surge valve; the first outlet end of the three-way valve is connected to the second pipeline; the second outlet end of the three-way valve is connected to the third pipeline;

[0007] The control unit is communicatively connected to the three-way valve for obtaining a throttle pressure difference parameter, a surge valve opening pressure difference threshold, and a surge valve fully opening pressure difference threshold; and controls the inlet end of the three-way valve to be connected to the first outlet end or the inlet end to be connected to the second outlet end according to the throttle pressure difference parameter, the surge valve opening pressure difference threshold, and the surge valve fully opening pressure difference threshold.

[0008] Optionally, it further includes a first air pressure sensor and a second air pressure sensor;

[0009] The first air pressure sensor is arranged on the first pipeline; the second air pressure sensor is arranged on the second pipeline;

[0010] The control unit is communicated with the first air pressure sensor and the second air pressure sensor respectively, and is used to obtain the pre-throttle pressure parameter of the first air pressure sensor and the post-throttle pressure parameter of the second air pressure sensor, and determine the throttle pressure difference parameter based on the pre-throttle pressure parameter and the post-throttle pressure parameter.

[0011] Optionally, a filtering unit is also included;

[0012] The filter unit is arranged on the third pipeline.

[0013] According to another aspect of the present invention, a surge control method is provided, which is applied to a surge control system. The surge control method includes:

[0014] Obtain throttle pressure differential parameters, surge valve opening pressure differential threshold, and surge valve fully opening pressure differential threshold;

[0015] The inlet end of the three-way valve is controlled to be connected to the first outlet end or the inlet end is controlled to be connected to the second outlet end according to the throttle pressure difference parameter, the surge valve opening pressure difference threshold and the surge valve fully opening pressure difference threshold.

[0016] Optionally, controlling the inlet end of the three-way valve to be connected to the first outlet end or the inlet end to be connected to the second outlet end according to the throttle pressure difference parameter, the surge valve opening pressure difference threshold, and the surge valve fully opening pressure difference threshold includes:

[0017] When the throttle pressure difference parameter P, the surge valve opening pressure difference threshold a and the surge valve fully opening pressure difference threshold b satisfy a<P<b, the control inlet end and the second outlet end are connected.

[0018] Optionally, after controlling the inlet end and the second outlet end to be connected, the method further includes:

[0019] Continue to obtain the throttle pressure difference parameters.

[0020] Optionally, controlling the inlet end of the three-way valve to be connected to the first outlet end or the inlet end to be connected to the second outlet end according to the throttle pressure difference parameter, the surge valve opening pressure difference threshold, and the surge valve fully opening pressure difference threshold includes:

[0021] When a>P is satisfied among the throttle pressure difference parameter P, the surge valve opening pressure difference threshold a, and the surge valve fully opening pressure difference threshold b, the control inlet port is connected to the first outlet port.

[0022] Optionally, controlling the inlet end of the three-way valve to be connected to the first outlet end or the inlet end to be connected to the second outlet end according to the throttle pressure difference parameter, the surge valve opening pressure difference threshold, and the surge valve fully opening pressure difference threshold includes:

[0023] When the throttle pressure difference parameter P, the surge valve opening pressure difference threshold a, and the surge valve fully opening pressure difference threshold b satisfy P>b, the control inlet port is connected to the first outlet port.

[0024] Optionally, obtain throttle pressure difference parameters, including:

[0025] Obtaining the pre-throttle pressure parameter and the post-throttle pressure parameter;

[0026] The throttle pressure difference parameter is determined according to the throttle pre-pressure parameter and the throttle post-pressure parameter.

[0027] Optionally, the surge valve opening pressure difference threshold a and the surge valve fully opening pressure difference threshold b satisfy 0<ba<5kPa.

[0028] The technical solution of the present invention is to set a three-way valve on the basis of setting a surge valve to suppress surge, and to judge the conduction of the three-way valve by obtaining the throttle pressure difference parameters in real time and combining the surge valve opening pressure difference threshold and the surge valve fully opening pressure difference threshold. When the surge valve is in critical opening, the three-way valve is used to fully open the surge valve, thereby solving the noise problem caused by the critical opening of the surge valve, reducing the surge risk of the entire machine pipeline and improving driving comfort.

[0029] It should be understood that the content described in this section is not intended to identify the key or important features of the embodiments of the present invention, nor is it intended to limit the scope of the present invention. Other features of the present invention will become readily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] 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 ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0031] Figure 1 1 is a schematic diagram of piping connections of a surge control system according to an embodiment of the present invention;

[0032] Figure 2 is a flow chart of a first surge control method provided according to an embodiment of the present invention;

[0033] Figure 3 is a flow chart of a second surge control method provided according to an embodiment of the present invention;

[0034] Figure 4 is a flow chart of a third surge control method provided in an embodiment of the present invention;

[0035] Figure 5is a flow chart of a fourth surge control method provided according to an embodiment of the present invention;

[0036] Figure 6 is a flow chart of a fifth surge control method provided according to an embodiment of the present invention;

[0037] Figure 7 is a flow chart of a sixth surge control method provided according to an embodiment of the present invention. DETAILED DESCRIPTION

[0038] In order to enable those skilled in the art to better understand the solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described 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 ordinary technicians in this field without making creative efforts should fall within the scope of protection of the present invention.

[0039] It should be noted that the terms "first", "second", etc. in the description and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0040] In the piping system of the prior art, the intake duct is connected to the supercharger inlet through a third pipe, the supercharger outlet is connected to the intercooler, the intercooler and the throttle are connected through a first pipe, and the throttle and the intake manifold are connected through a second pipe. When the compressor intake flow is too small, the airflow in the vane diffuser and at the impeller inlet is separated and causes surge. When the flow is less than a certain value, the separation of the airflow will spread to the entire vane diffuser and impeller channel, causing the airflow to oscillate strongly and flow back. This phenomenon is called surge. In order to prevent surge, a surge valve is provided in the piping system. The surge valve can be a mechanical valve. It is mainly used to adjust the flow in the piping system. When the flow in the pipeline cannot meet the equipment operation requirements, the surge valve can automatically open and close according to the pressure difference before and after the throttle. However, when the vehicle is running at a low throttle, this critical opening situation is very likely to occur, causing irregular vibration of the valve body and abnormal noise in the intake pipe. The resulting NVH problem seriously affects the driving comfort. Therefore, an embodiment of the present invention provides a surge control system. Figure 1 FIG. 1 is a schematic diagram of pipeline connections of a surge control system according to an embodiment of the present invention. Figure 1 As shown, the surge control system includes: a surge valve 1, a three-way valve 2 and a control unit;

[0041] The first end 11 of the surge valve 1 is in communication with the first pipeline 3 between the throttle valve 61 and the intercooler 62; the second end 12 of the surge valve 1 is in communication with the second pipeline 4 between the throttle valve 61 and the intake manifold 63; the third end 13 of the surge valve 1 is in communication with the third pipeline 5 between the intake duct 64 and the supercharger 65;

[0042] The three-way valve 2 is disposed between the second end 12 of the surge valve 1 and the second pipeline 4; the inlet end 21 of the three-way valve 2 is in communication with the second end 12 of the surge valve 1; the first outlet end 22 of the three-way valve 2 is in communication with the second pipeline 4; and the second outlet end 23 of the three-way valve 2 is in communication with the third pipeline 5.

[0043] The control unit is in communication with the three-way valve 2, and is used to obtain the throttle pressure difference parameter, the surge valve opening pressure difference threshold and the surge valve fully opening pressure difference threshold; and controls the inlet end 21 of the three-way valve 2 to be connected to the first outlet end 22 or the inlet end 21 to be connected to the second outlet end 23 according to the throttle pressure difference parameter, the surge valve opening pressure difference threshold and the surge valve fully opening pressure difference threshold.

[0044] The surge valve 1 includes a first end 11, a second end 12, and a third end 13. The first end 11 is connected to the first pipeline 3, the second end 12 is connected to the second pipeline 4, and the third end 13 is connected to the third pipeline 5. During normal operation, the first end 11 is connected to the first pipeline 3, and the second end 12 is connected to the second pipeline 4. When the throttle pressure difference parameter before and after the throttle valve 61 increases to a certain level, the surge valve 1 automatically controls the third end 13 to connect to the third pipeline 5, thereby achieving the effect of suppressing surge.

[0045] The three-way valve 2 can be a two-position, three-way solenoid valve that is communicatively connected to a control unit and controls the valve's on / off state by controlling the power on and off of the solenoid coil. The three-way valve 2 includes an inlet port 21 and two outlet ports. The inlet port 21 is connected to the second port 12 of the surge valve 1, and the first outlet port 22 is connected to the second pipeline 4; the second outlet port 23 of the three-way valve 2 is connected to the third pipeline 5. The control unit obtains the throttle pressure differential parameter in real time and controls the connection between the inlet port 21 and the first outlet port 22, or between the inlet port 21 and the second outlet port 23 of the three-way valve 2 based on the throttle pressure differential parameter, the surge valve opening pressure differential threshold, and the surge valve fully open pressure differential threshold, thereby suppressing noise when the surge valve 1 is critically open.

[0046] The throttle pressure differential parameter can be the pressure differential across the throttle valve 61. The surge valve opening pressure differential threshold can be the critical pressure differential across the throttle valve 61 at which the surge valve 1 is opened. The surge valve 1 is susceptible to abnormal noise when it is slightly open. The fully open pressure differential threshold can be the critical pressure differential across the throttle valve 61 at which the surge valve 1 is slightly open. For example, the surge valve opening pressure differential threshold is a kPa. When the pressure differential across the throttle valve 61 is greater than the surge valve 1 opening pressure of 0-5 kPa, the surge valve 1 is in the slightly open state.

[0047] Specifically, when the vehicle is traveling at a low throttle, there is a certain pressure difference before and after the throttle valve 61. At this time, the surge valve 1 is in a slightly open state or a critical open state. At this time, the control unit can control the inlet end 21 and the second outlet end 23 of the three-way valve 2 to be connected, thereby allowing the fluid to enter the third pipeline 5. At this time, the surge valve 1 is fully opened, thereby avoiding the noise problem caused by the critical opening of the surge valve 1, thereby achieving the purpose of improving driving comfort.

[0048] The technical solution of the embodiment of the present invention is to set a three-way valve on the basis of setting a surge valve to suppress surge, and to judge the conduction of the three-way valve by obtaining the throttle pressure difference parameters in real time and combining the surge valve opening pressure difference threshold and the surge valve fully opening pressure difference threshold. When the surge valve is in critical opening, the three-way valve is used to fully open the surge valve, thereby solving the noise problem caused by the critical opening of the surge valve, reducing the surge risk of the entire machine pipeline and improving driving comfort.

[0049] Optional, continue to refer to Figure 1 As shown, it also includes a first air pressure sensor 66 and a second air pressure sensor 67;

[0050] The first air pressure sensor 66 is provided on the first pipeline 3; the second air pressure sensor 67 is provided on the second pipeline 4;

[0051] The control unit is respectively connected to the first air pressure sensor 66 and the second air pressure sensor 67 for communication, and is used to obtain the pre-throttle pressure parameter of the first air pressure sensor 66 and the post-throttle pressure parameter of the second air pressure sensor 67, and determine the throttle pressure difference parameter based on the pre-throttle pressure parameter and the post-throttle pressure parameter.

[0052] The first air pressure sensor 66 can be used to detect the pre-throttle pressure parameter in real time, and the second air pressure sensor 67 can be used to detect the post-throttle pressure parameter in real time. The control unit can calculate and determine the throttle pressure difference parameter based on the pre-throttle pressure parameter and the post-throttle pressure parameter.

[0053] In some embodiments, a filter unit 68 is further included; the filter unit 68 is disposed on the third pipeline 5 and can be used to filter the fluid entering the supercharger 65 to ensure the reliability of the surge control system.

[0054] The technical solution of the embodiment of the present invention ensures real-time acquisition of throttle pressure difference parameters and normal operation of the surge control system by providing a first air pressure sensor and a second air pressure sensor.

[0055] Based on the same inventive concept, an embodiment of the present invention provides a surge control method, which is applied to a surge control system. Figure 2 This is a flow chart of a first surge control method according to an embodiment of the present invention, combined with Figure 1 and Figure 2 As shown, the surge control method includes:

[0056] S10: Acquire a throttle pressure difference parameter, a surge valve opening pressure difference threshold, and a surge valve fully opening pressure difference threshold.

[0057] Among them, the throttle pressure difference parameter can be the pressure difference before and after the throttle valve 61. The surge valve opening pressure difference threshold can be the critical pressure difference before and after the throttle valve 61 when the surge valve 1 is opened. The surge valve 1 is in a slightly open state, which is unstable and prone to abnormal noise. The surge valve fully open pressure difference threshold can be the critical pressure difference before and after the throttle valve 61 when the surge valve 1 is slightly opened. Exemplarily, the surge valve opening pressure difference threshold is a kPa, and the surge valve fully open pressure difference threshold is b kPa, where b>a. In some embodiments, the surge valve opening pressure difference threshold a and the surge valve fully open pressure difference threshold b satisfy 0<ba<5kPa.

[0058] S11 , controlling the inlet end of the three-way valve to be connected to the first outlet end or the inlet end to be connected to the second outlet end according to the throttle pressure difference parameter, the surge valve opening pressure difference threshold, and the surge valve fully opening pressure difference threshold.

[0059] Among them, when the throttle pressure difference parameter is less than the surge valve opening pressure difference threshold, it means that the pressure difference before and after the throttle valve 61 is small, there is no surge problem, and the surge valve 1 does not open, that is, there is no noise problem caused by critical opening of the surge valve 1. At this time, the inlet end 21 is connected to the first outlet end 22, and the gas path is connected to the second pipeline 4; when the throttle pressure difference parameter is greater than the surge valve fully opening pressure difference threshold, it means that the pressure difference before and after the throttle valve 61 is large, and the surge valve 1 is fully opened, that is, there is no noise problem caused by critical opening of the surge valve 1. At this time, the inlet end 21 is connected to the first outlet end 22, and the gas path is connected to the second pipeline 4; when the throttle pressure difference parameter is between the surge valve opening pressure difference threshold and the surge valve fully opening pressure difference threshold, the surge valve 1 is in a slightly open state. At this time, the control inlet end 21 is connected to the second outlet end 23, so that the gas enters the third pipeline 5, resulting in a further increase in the pressure difference before and after the throttle 61, so that the surge valve 1 is fully opened, thereby avoiding the noise problem caused by critical opening.

[0060] The technical solution of the embodiment of the present invention obtains the throttle pressure difference parameter, the surge valve opening pressure difference threshold and the surge valve fully opening pressure difference threshold, and controls the inlet end of the three-way valve to be connected to the first outlet end or the inlet end to be connected to the second outlet end according to the throttle pressure difference parameter, the surge valve opening pressure difference threshold and the surge valve fully opening pressure difference threshold. When the surge valve is in critical opening, the three-way valve is used to fully open the surge valve, thereby solving the noise problem caused by the critical opening of the surge valve, reducing the surge risk of the entire machine pipeline and improving driving comfort.

[0061] Based on the above embodiments, Figure 3 is a flow chart of a second surge control method provided according to an embodiment of the present invention, combined with Figure 1 and Figure 3 As shown, the surge control method includes:

[0062] S20: Acquire a throttle pressure difference parameter, a surge valve opening pressure difference threshold, and a surge valve fully opening pressure difference threshold.

[0063] S21 , when the throttle pressure difference parameter P, the surge valve opening pressure difference threshold a, and the surge valve fully opening pressure difference threshold b satisfy a<P<b, the control inlet port is connected to the second outlet port.

[0064] Among them, when the throttle pressure difference parameter is between the surge valve opening pressure difference threshold and the surge valve fully opening pressure difference threshold, that is, a<P<b, the surge valve 1 is in a slightly open state. At this time, the surge valve 1 will vibrate irregularly due to critical opening, thereby causing abnormal noise in the intake pipe. At this time, the control unit controls the inlet end 21 of the three-way valve 2 to be connected with the second outlet end 23, so that the gas enters the third pipeline 5, causing the air pressure before the throttle 61 to increase, and the pressure difference before and after the throttle 61 to further increase, so that the surge valve 1 is fully opened, thereby avoiding the noise problem caused by critical opening.

[0065] The technical solution of the embodiment of the present invention can achieve anti-surge effect while ensuring the performance of the entire machine and maintaining the smooth flow of gas in the pipeline. At the same time, it avoids irregular vibration of the valve body, improves NVH performance, and makes the operation of the entire machine safer.

[0066] Based on the above embodiments, Figure 4 is a flow chart of a third surge control method provided according to an embodiment of the present invention, combined with Figure 1 and Figure 4 As shown, the surge control method includes:

[0067] S30: Acquire a throttle pressure difference parameter, a surge valve opening pressure difference threshold, and a surge valve fully opening pressure difference threshold.

[0068] S31 , when the throttle pressure difference parameter P, the surge valve opening pressure difference threshold a, and the surge valve fully opening pressure difference threshold b satisfy a<P<b, controlling the inlet port and the second outlet port to be conductive.

[0069] S32: Continue to obtain throttle pressure difference parameters.

[0070] Among them, after controlling the surge valve 1 to be fully opened, the throttle pressure difference parameter continues to be obtained in real time, and the three-way valve 2 is continued to be controlled according to the throttle pressure difference parameter, the surge valve opening pressure difference threshold and the surge valve fully opening pressure difference threshold, thereby ensuring the vehicle's demand for intake flow pressure and ensuring that the intake meets the performance requirements of the entire machine.

[0071] Based on the above embodiments, Figure 5 is a flow chart of a fourth surge control method provided according to an embodiment of the present invention, combined with Figure 1 and Figure 5 As shown, the surge control method includes:

[0072] S40: Acquire a throttle pressure difference parameter, a surge valve opening pressure difference threshold, and a surge valve fully opening pressure difference threshold.

[0073] S41 , when the throttle pressure difference parameter P, the surge valve opening pressure difference threshold a, and the surge valve fully opening pressure difference threshold b satisfy a>P, controlling the inlet port to be connected to the first outlet port.

[0074] Among them, when the throttle pressure difference parameter is less than the surge valve opening pressure difference threshold, that is, a>P, it means that the pressure difference before and after the throttle 61 is small, there is no surge problem, and the surge valve 1 does not open, that is, there is no noise problem caused by the critical opening of the surge valve 1. At this time, the inlet end 21 is connected to the first outlet end 22, and the gas path is connected to the second pipeline 4.

[0075] Based on the above embodiments, Figure 6 is a flow chart of a fifth surge control method provided according to an embodiment of the present invention, combined with Figure 1 and Figure 6 As shown, the surge control method includes:

[0076] S50: Acquire a throttle pressure difference parameter, a surge valve opening pressure difference threshold, and a surge valve fully opening pressure difference threshold.

[0077] S51 , when the throttle pressure difference parameter P, the surge valve opening pressure difference threshold a, and the surge valve fully opening pressure difference threshold b satisfy P>b, the control inlet port is connected to the first outlet port.

[0078] Among them, when the throttle pressure difference parameter is greater than the surge valve fully open pressure difference threshold, it means that the pressure difference before and after the throttle 61 is large, the vehicle is not in a high throttle driving state, the surge valve 1 is directly fully opened, the third end 13 of the surge valve 1 is connected to the third pipeline 5, and there is no noise problem caused by the critical opening of the surge valve 1. At this time, the inlet end 21 is connected to the first outlet end 22, and the air circuit is connected to the second pipeline 4.

[0079] According to the technical solution of the embodiment of the present invention, when the throttle pressure difference parameter is greater than the surge valve fully opening pressure difference threshold or when the throttle pressure difference parameter is less than the surge valve opening pressure difference threshold, the control unit controls the inlet end and the first outlet end to be continuously connected, thereby ensuring the normal operation of the surge control system when the surge valve is in a non-critical opening state.

[0080] Based on the above embodiments, Figure 7 is a flow chart of a sixth surge control method provided according to an embodiment of the present invention, combined with Figure 1 and Figure 7 As shown, the surge control method includes:

[0081] S60: Obtain a pre-throttle pressure parameter, a post-throttle pressure parameter, a surge valve opening pressure difference threshold, and a surge valve fully opening pressure difference threshold.

[0082] The pre-throttle pressure parameter can be obtained through a first air pressure sensor 66 provided on the first pipeline 3 , and the post-throttle pressure parameter can be obtained through a second air pressure sensor 67 provided on the second pipeline 4 .

[0083] S61 : Determine a throttle pressure difference parameter according to a pre-throttle pressure parameter and a post-throttle pressure parameter.

[0084] The control unit can calculate and determine the throttle pressure difference parameter based on the pre-throttle pressure parameter and the post-throttle pressure parameter. The pre-throttle pressure parameter PTP, the post-throttle pressure parameter MAP, and the throttle pressure difference parameter P satisfy P=PTP-MAP.

[0085] S62 , controlling the inlet end of the three-way valve to be connected to the first outlet end or the inlet end to be connected to the second outlet end according to the throttle pressure difference parameter, the surge valve opening pressure difference threshold, and the surge valve fully opening pressure difference threshold.

[0086] The technical solution of the embodiment of the present invention ensures the real-time acquisition of the throttle pressure difference parameters and the normal operation of the surge control system by collecting the pre-throttle pressure parameters and the post-throttle pressure parameters in real time and calculating the throttle pressure difference parameters based on the pre-throttle pressure parameters and the post-throttle pressure parameters.

[0087] It should be understood that the various forms of the processes shown above can be used to reorder, add, or delete steps. For example, the steps described in the present invention can be performed in parallel, sequentially, or in a different order, as long as the desired results of the technical solution of the present invention can be achieved. This is not limited herein.

[0088] The above specific embodiments do not limit the scope of protection of the present invention. Those skilled in the art will appreciate that various modifications, combinations, sub-combinations, and substitutions may be made based on design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention are intended to be included within the scope of protection of the present invention.

Claims

1. A surge control system, characterized in that: Includes surge valve, three-way valve and control unit; A first end of the surge valve is in communication with a first pipeline between the throttle valve and the intercooler; a second end of the surge valve is in communication with a second pipeline between the throttle valve and the intake manifold; a third end of the surge valve is in communication with a third pipeline between the intake duct and the supercharger; the intake duct is in communication with an inlet of the supercharger via the third pipeline; The three-way valve is arranged between the second end of the surge valve and the second pipeline; the inlet end of the three-way valve is communicated with the second end of the surge valve; the first outlet end of the three-way valve is communicated with the second pipeline; the second outlet end of the three-way valve is communicated with the third pipeline; The control unit is communicatively connected to the three-way valve for obtaining a throttle pressure difference parameter, a surge valve opening pressure difference threshold, and a surge valve fully opening pressure difference threshold; and controls the inlet end of the three-way valve to be connected to the first outlet end or the inlet end to be connected to the second outlet end according to the throttle pressure difference parameter, the surge valve opening pressure difference threshold, and the surge valve fully opening pressure difference threshold.

2. The surge control system according to claim 1, characterized in that: Also included are a first air pressure sensor and a second air pressure sensor; The first air pressure sensor is arranged on the first pipeline; the second air pressure sensor is arranged on the second pipeline; The control unit is respectively communicated with the first air pressure sensor and the second air pressure sensor, and is used to obtain the pre-throttle pressure parameter of the first air pressure sensor and the post-throttle pressure parameter of the second air pressure sensor, and determine the throttle pressure difference parameter based on the pre-throttle pressure parameter and the post-throttle pressure parameter.

3. The surge control system according to claim 1, characterized in that: Also included is a filtration unit; The filter unit is disposed on the third pipeline.

4. A surge control method, characterized in that: Applicable to the surge control system according to any one of claims 1 to 3; the surge control method comprises: Obtain throttle pressure differential parameters, surge valve opening pressure differential threshold, and surge valve fully opening pressure differential threshold; Controlling the inlet end of the three-way valve to be connected to the first outlet end or the inlet end to be connected to the second outlet end according to the throttle pressure difference parameter, the surge valve opening pressure difference threshold and the surge valve fully opening pressure difference threshold; Controlling the inlet end of the three-way valve to be connected to the first outlet end or the inlet end to be connected to the second outlet end according to the throttle pressure difference parameter, the surge valve opening pressure difference threshold, and the surge valve fully opening pressure difference threshold includes: When the throttle pressure difference parameter P, the surge valve opening pressure difference threshold a, and the surge valve fully opening pressure difference threshold b satisfy a<P<b, the control inlet end and the second outlet end are connected; When the throttle pressure difference parameter P, the surge valve opening pressure difference threshold a, and the surge valve fully opening pressure difference threshold b satisfy a>P, the control inlet end is connected to the first outlet end; When the throttle pressure difference parameter P, the surge valve opening pressure difference threshold a, and the surge valve fully opening pressure difference threshold b satisfy P>b, the control inlet port is connected to the first outlet port.

5. The surge control method according to claim 4, characterized in that: After the control inlet end and the second outlet end are connected, the method further includes: Continue to obtain the throttle pressure difference parameter.

6. The surge control method according to claim 4, characterized in that: Get throttle pressure difference parameters, including: Obtaining the pre-throttle pressure parameter and the post-throttle pressure parameter; A throttle pressure difference parameter is determined according to the pre-throttle pressure parameter and the post-throttle pressure parameter.

7. The surge control method according to claim 4, characterized in that: The surge valve opening pressure difference threshold a and the surge valve fully opening pressure difference threshold b satisfy 0<ba<5kPa.

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