Control method and device of turbocharging system, vehicle, and storage medium

Abstract

The embodiment of the application provides a turbocharging system control method, device, vehicle and storage medium, and relates to the technical field of vehicle turbocharging. The embodiment of the application obtains the driving mode of the vehicle and the pressure value of the intercooler pipeline; and according to the driving mode of the vehicle and the actually detected pressure value, the position of the opening-closing valve is adjusted in real time, the state switching between the self-suction and the supercharged vehicle is realized, and when driving in the supercharged state, the opening degree of the opening-closing valve cross-sectional area can be adjusted according to the requirement, so that the high-pressure gas discharge efficiency is ensured. Once the supercharging pipeline, the supercharger and other devices fail, the ECU can adjust the vehicle state according to the detection data, avoid the limitation of the vehicle acceleration performance, ensure the basic function of normal driving, and ensure the action of quickly leaving the fault point and going to the maintenance station.

Description

Technical Field

[0001] This invention relates to the field of vehicle turbocharging technology, and in particular to a control method for a turbocharging system, a turbocharging device, a vehicle, and a computer-readable storage medium. Background Technology

[0002] The turbochargers in existing vehicles only work when the displacement reaches a certain value, so there will be a lag, especially at the start. In addition, the intercooler pipes are too long, resulting in greater intake and exhaust resistance and greatly reducing intake and exhaust efficiency.

[0003] Furthermore, the pressure relief valves in existing intercooling pipelines can only perform simple opening and closing actions, thus failing to achieve precise pressure control.

[0004] These problems mean that when some components in the turbocharger system malfunction, the vehicle cannot move and can only stand still and wait for rescue, wasting time. Summary of the Invention

[0005] In view of the above problems, embodiments of the present invention are proposed to provide a control method for a turbocharging system, a turbocharging device, a vehicle, and a computer-readable storage medium that overcome or at least partially solve the above problems.

[0006] In a first aspect, embodiments of the present invention disclose a control method for a turbocharged system. The turbocharged system includes a turbocharger and an intercooler pipeline. The intercooler pipeline is connected to an engine via an on / off valve, and the engine is also connected to a bypass pipe via the on / off valve. The method includes: acquiring a vehicle's driving mode and a pressure value of the intercooler pipeline; if the driving mode is a first driving mode and the pressure value of the intercooler pipeline is less than a first pressure threshold, then setting the on / off valve to a first position so that the engine is connected to the bypass pipe via the on / off valve, and air enters the engine through the bypass pipe and the on / off valve; if the driving mode is the first driving mode and the pressure value of the intercooler pipeline is not less than the first pressure threshold, then setting the on / off valve to a second position so that the intercooler pipeline is connected to the engine via the on / off valve, and air enters the engine through the turbocharger, the intercooler pipeline, and the on / off valve.

[0007] Optionally, the method further includes: if the driving mode is a second driving mode, then setting the opening and closing valve to the first position; detecting whether the pressure value is less than a second pressure threshold; if not, then setting the opening and closing valve to the second position.

[0008] Optionally, the method further includes: if the pressure value is not less than a third pressure threshold, then setting the position of the on / off valve corresponding to the pressure value within a preset position interval; the starting point of the position interval does not exceed the first position, and the ending point does not exceed the second position; the third pressure threshold is greater than the first pressure threshold.

[0009] Optionally, the method further includes: detecting whether the turbocharger and / or the intercooler pipeline is faulty; if the turbocharger and / or the intercooler pipeline is faulty, then setting the on / off valve to the first position.

[0010] Optionally, detecting whether the turbocharger and / or the intercooler piping is faulty includes: detecting whether the pressure value exceeds a fourth pressure threshold, and detecting whether the pressure value of the intercooler piping fluctuates; if the pressure value does not exceed the fourth pressure threshold and does not fluctuate, the turbocharger is determined to be faulty; if the pressure value exceeds the fourth pressure threshold and fluctuates, the pressure value is detected to continuously exceed the fourth threshold within a preset time period; if not, the intercooler piping is determined to be faulty.

[0011] Optionally, the exhaust pipe is connected to the exhaust-side valve, and the method further includes: when the intercooler pipe malfunctions, setting the exhaust-side valve port to an open state so that the exhaust gas generated by the engine is discharged from the exhaust-side valve port.

[0012] Optionally, obtaining the vehicle's driving mode includes: detecting whether the vehicle is powered on at the current time point; if so, detecting whether the vehicle was powered on at the previous time point; if not, determining that the driving mode is the first driving mode.

[0013] Optionally, obtaining the vehicle's driving mode further includes: detecting that the driver of the vehicle has selected the launch start mode; if so, then determining that the driving mode is the second driving mode.

[0014] Optionally, the method further includes: if the pressure value of the intercooling pipeline is less than a third pressure threshold, then setting the on / off valve to the second position.

[0015] Secondly, embodiments of the present invention disclose a turbocharger device, the device comprising: an air filter intake pipe, an air filter assembly, an air filter outlet pipe, a turbocharger, an intercooler pipe, an intercooler, a pressure sensor, an on / off valve, a bypass pipe, an engine, and an electronic control unit; the pressure sensor is used to acquire the vehicle's driving mode and the pressure value of the intercooler pipe; the electronic control unit is used to, if the driving mode is a first driving mode and the pressure value of the intercooler pipe is less than a first pressure threshold, set the on / off valve to a first position, so that the engine is connected to the bypass pipe through the on / off valve, and air enters the engine through the bypass pipe and the on / off valve; the electronic control unit is used to, if the driving mode is the first driving mode and the pressure value of the intercooler pipe is not less than the first pressure threshold, set the on / off valve to a second position, so that the intercooler pipe is connected to the engine through the on / off valve, and air enters the engine through the turbocharger, the intercooler pipe, and the on / off valve.

[0016] Optionally, it also includes the electronic control unit, configured to set the opening / closing valve to the first position if the driving mode is the second driving mode; a first detection submodule, configured to detect whether the pressure value is less than a second pressure threshold; and a second setting submodule, configured to set the opening / closing valve to the second position if not.

[0017] Optionally, the electronic control unit is also included, which is used to set the position of the open / close valve corresponding to the pressure value within a preset position range if the pressure value is not less than a third pressure threshold; the starting point of the position range does not exceed the first position and the ending point does not exceed the second position.

[0018] Optionally, it also includes the electronic control unit, used to detect whether the turbocharger and / or the intercooler pipeline is faulty; and a fourth setting submodule, used to set the on / off valve to the first position if the turbocharger and / or the intercooler pipeline is faulty.

[0019] Optionally, the electronic control unit is further configured to detect whether the pressure value of the intercooler pipe exceeds a fourth pressure threshold and whether the pressure value of the intercooler pipe experiences pressure fluctuations; the electronic control unit is configured to determine that the turbocharger is faulty if it detects that the pressure value does not exceed the fourth pressure threshold and that the pressure value does not experience pressure fluctuations; the electronic control unit is configured to detect whether the pressure value of the intercooler pipe continuously exceeds the fourth pressure threshold within a preset time period if it detects that the pressure value exceeds the fourth pressure threshold and that the pressure value experiences pressure fluctuations; the electronic control unit is configured to determine that the intercooler pipe is faulty if not.

[0020] Optionally, it also includes: the electronic control unit, which is used to set the exhaust side valve port to an open state when the intercooler pipe malfunctions, so that the exhaust gas generated by the engine is discharged from the exhaust side valve port.

[0021] Optionally, the electronic control unit is further configured to detect whether the vehicle is powered on at the current time point; if so, the electronic control unit is configured to detect whether the vehicle was powered on at the previous time point; if not, the electronic control unit is configured to determine that the driving mode is the first driving mode.

[0022] Optionally, the electronic control unit is also included, which is used to detect that the driver of the vehicle selects the launch control mode; the electronic control unit is used to determine that the driving mode is the second driving mode if so.

[0023] Optionally, the electronic control unit is configured to set the on / off valve to the second position if the pressure value of the intercooling pipeline is less than a third pressure threshold.

[0024] Thirdly, embodiments of the present invention disclose a vehicle, including: a processor, a memory, and a computer program stored in the memory and capable of running on the processor, wherein when the computer program is executed by the processor, it implements the various steps of the control method embodiment of the turbocharged system as described in the first aspect.

[0025] Fourthly, embodiments of the present invention disclose a computer-readable storage medium storing a computer program, which, when executed by a processor, implements the various steps of the control method embodiment for the turbocharged system as described in the first aspect.

[0026] The embodiments of the present invention have the following advantages:

[0027] The system acquires the vehicle's driving mode and the intercooler pipe pressure value. If the driving mode is a first driving mode and the intercooler pipe pressure value is less than a first pressure threshold, the on / off valve is set to a first position, allowing the engine to connect to a bypass pipe via the on / off valve, and air to enter the engine through the bypass pipe and the on / off valve. If the driving mode is the first driving mode and the intercooler pipe pressure value is not less than the first pressure threshold, the on / off valve is set to a second position, allowing the intercooler pipe to connect to the engine via the on / off valve, and air to enter the engine through the turbocharger, the intercooler pipe, and the on / off valve. This embodiment of the invention acquires the vehicle's driving mode and the intercooler pipe pressure value, and adjusts the position of the on / off valve in real time based on the driving mode and the actual detected pressure value to ensure the optimal fuel ratio, improve overall vehicle performance, and achieve state switching between naturally aspirated and turbocharged vehicle models.

[0028] The above description is merely an overview of the technical solution of the present invention. In order to better understand the technical means of the present invention and to implement it in accordance with the contents of the specification, and in order to make the above and other objects, features and advantages of the present invention more apparent and understandable, specific embodiments of the present invention are described below. Attached Figure Description

[0029] Figure 1 This is a flowchart of the steps of a control method for a turbocharger system provided in an embodiment of the present invention;

[0030] Figure 2A This is a schematic diagram of the first position of the opening and closing valve and the gas flow path provided in an embodiment of the present invention;

[0031] Figure 2B This is a schematic diagram of the gas flow path when the valve is in the first position according to an embodiment of the present invention;

[0032] Figure 2C It is a three-dimensional schematic diagram of the three-way interface and the position of the on / off valve;

[0033] Figure 3A This is a schematic diagram of the second position of the opening and closing valve and the gas flow path provided in an embodiment of the present invention;

[0034] Figure 3B This is a schematic diagram of the gas flow path when the valve is in the second position according to an embodiment of the present invention;

[0035] Figure 3C This is a three-dimensional schematic diagram of the three-way interface and the position of the on / off valve according to an embodiment of the present invention.

[0036] Figure 4 A schematic diagram illustrating the relationship between pressure and opening degree provided in an embodiment of the present invention;

[0037] Figure 5A This is a schematic diagram of the opening and closing valve position and gas flow path of the turbocharger system during depressurization according to an embodiment of the present invention;

[0038] Figure 5B This is a three-dimensional schematic diagram of the three-way interface and the position of the on / off valve provided in an embodiment of the present invention;

[0039] Figure 6 This is a schematic diagram of the gas flow path when the intercooler pipeline fails, provided in an embodiment of the present invention.

[0040] Figure 7 This is a structural block diagram of a turbocharger device provided in an embodiment of the present invention. Detailed Implementation

[0041] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0042] Reference Figure 1 The diagram illustrates a flowchart of an embodiment of a control method for a turbocharger system according to the present invention, which may specifically include the following steps:

[0043] Step 101: Obtain the vehicle driving mode and intercooler pipeline pressure value.

[0044] The pressure in the intercooler system varies depending on the vehicle's driving mode. To accurately control the turbocharger system, this invention requires acquiring the current vehicle driving mode and the intercooler pipe pressure, and then controlling the turbocharger system based on the driving mode and the corresponding pressure value. In this invention, the vehicle driving modes may include four modes: start-up, launch control, depressurization, and turbocharger system malfunction. The intercooler pipe pressure value is the pressure inside the intercooler pipe, acquired by a pressure sensor installed at the cold end of the intercooler.

[0045] Step 102: When the driving mode is the first driving mode and the intercooler pipeline pressure value is less than the first pressure threshold, set the opening and closing valve to the first position.

[0046] In this embodiment of the invention, the first driving mode can be the starting phase when the vehicle is first powered on.

[0047] In existing vehicles, the turbocharger does not engage during the initial start-up phase due to exhaust flow limitations. Therefore, the vehicle operates in a naturally aspirated state during start-up. However, the excessively long and small-diameter intercooler piping leads to excessive resistance, low intake efficiency, slow acceleration response, and insufficient low-speed torque. To address this, this invention detects whether the pressure inside the intercooler piping is below a first pressure threshold when the vehicle is in its first driving mode (i.e., immediately after power-on start-up). This first pressure threshold, set to 1.2 bar, is used to determine if intake volume compensation is needed. If the detected pressure is below 1.2 bar, the vehicle requires intake volume compensation. Upon determining the need for compensation, the Electronic Control Unit (ECU) outputs a signal to supply battery voltage to the on / off valve, sealing the intercooler piping and connecting the bypass pipe to the engine throttle valve, allowing air to enter the engine through the bypass pipe. The first position is the lower limit of the three-way connector of the on / off valve. At the same time, with the improvement of intake efficiency, the increase in exhaust flow during engine operation will drive the turbocharger to work.

[0048] like Figure 2A The diagram shows the first position of the on / off valve and the gas flow path. Specifically, air enters the intercooler piping from the air intake manifold. A portion enters the engine through a bypass pipe, while the remaining air passes through the air filter outlet, turbocharger, intercooler piping, and intercooler, finally reaching the intercooler piping connected to the T-junction. At this point, the turbocharger is not engaged. Because the on / off valve is at its limit position at the T-junction, the intercooler piping is blocked, and the bypass pipe connects to the electric motor throttle valve, causing an increase in pressure in the intercooler piping. As intake efficiency improves, the turbocharger operates, and the intercooler piping pressure rapidly rises to the turbocharger's normal operating level (1.2 bar) due to the blockage and turbocharger operation. The intercooler piping pressure is monitored in real-time by a pressure sensor. Figure 2B The diagram shown illustrates the gas flow path in the first position of the opening and closing valve according to an embodiment of the present invention. Specifically, when the opening and closing valve is in the first position, the gas enters the turbocharger through the engine, the turbocharger pressure valve is closed, and the gas drives the turbocharger to operate. Figure 2C The diagram shows a three-dimensional view of the three-way interface and the position of the on / off valve in an embodiment of the present invention. The first position of the on / off valve is shown in the diagram.

[0049] Step 103: When the driving mode is the first driving mode and the intercooler pipeline pressure value is not less than the first pressure threshold, set the opening and closing valve to the second position.

[0050] like Figure 3AThe diagram shows the second position of the on / off valve and the gas flow path. Specifically, in this embodiment of the invention, when the pressure value in the intercooler pipe reaches 1.2 bar, it is determined that the turbocharger is engaged and working normally. The ECU outputs a signal to disconnect the battery voltage to the on / off valve, restore the on / off valve position from the lower limit position to the initial position, reconnect the intercooler pipe to the engine, and disconnect the bypass pipe from the engine.

[0051] Air cannot enter the engine through the bypass pipe; it must enter through the air filter intake pipe, then pass through the air filter exhaust pipe, turbocharger, intercooler pipe, intercooler, three-way valve connector, and engine throttle valve before entering the engine. The turbocharger is always engaged and working normally.

[0052] In this embodiment of the invention, the method further includes:

[0053] If the driving mode is the second driving mode, then the opening and closing valve is set to the first position;

[0054] Detect whether the pressure value is less than the second pressure threshold;

[0055] If not, then the on / off valve is set to the second position.

[0056] Specifically, the second driving mode is launch control mode. When the vehicle encounters situations such as stopping at red lights or racing, the driver can choose launch control. After the driver selects launch control, the ECU adjusts the engine speed, increasing exhaust flow to drive the turbocharger and pressurize the intake air. Simultaneously, it outputs a signal to the battery to supply voltage to the on / off valve, readjusting the valve to... Figure 3A The second position in the process seals off the intercooler piping, allowing the engine's intake air to flow through the bypass pipe. The turbocharger continuously pressurizes the intercooler piping, increasing the internal gas pressure. This, in turn, improves fuel injection and intake efficiency during launch control, ensuring optimal fuel ratios.

[0057] In this embodiment of the invention, the minimum pressure build-up value, maximum pressure build-up value, and longest pressure build-up time for launch control can be set according to the characteristics of different turbocharged engines, such as the relationship between intake flow rate and pressure ratio, and the relationship between flow rate and idle speed / vehicle gear speed, to achieve rapid build-up of maximum pressure. When building up the pressure inside the intercooler pipes, a pressure sensor will detect in real time whether the internal pressure value is less than a second pressure threshold. The second pressure threshold is the pressure threshold for the vehicle in launch control mode, used to determine if the boost is excessive. If excessive, temporary pressure relief is required, and it can be set to 2.5 bar. The minimum pressure ratio for launch control boost can be set to 1.5 bar, meaning that launch control can only be performed when the detected internal pressure value of the intercooler pipes is greater than 1.5 bar. In one example, if the detected internal pressure value of the intercooler pipes is greater than 1.5 bar, the internal pressure has reached the starting pressure value for launch control, and the driver can perform launch control by releasing the brake pedal and pressing the accelerator. When the driver presses the accelerator pedal hard, the valve will quickly return to its second position, the initial position, and the gas stored in the intercooler pipe will be rapidly drawn into the engine to ensure the optimal fuel ratio. If the driver does not perform a launch control operation at this time, the valve will not return to the second position, and the pressure in the intercooler pipe will continue to increase. This is equivalent to the vehicle entering idle mode. For this idle state, the present invention sets a second pressure threshold. When the pressure sensor detects that the intercooler pipe pressure exceeds the second pressure threshold, the intercooler pipe will depressurize, and the valve will be set to the second position to release the gas inside the intercooler pipe and reduce the pressure. When the intercooler pipe pressure falls below the second pressure threshold, the valve will immediately return to the first position to maintain the continuous pressure inside the intercooler pipe. Figure 3B The diagram shown illustrates the gas flow path in the second position of the on / off valve according to an embodiment of the present invention. Specifically, when the on / off valve is in the second position, the gas enters the turbocharger through the engine. The turbocharger pressure valve is closed, and the gas drives the turbocharger to operate. Figure 3C The diagram shows a three-dimensional view of the three-way interface and the position of the on / off valve in an embodiment of the present invention. The second position of the on / off valve is shown in the diagram.

[0058] In this embodiment of the invention, the method further includes:

[0059] If the pressure value is not less than the third pressure threshold, then the position of the on / off valve corresponding to the pressure value is set within a preset position interval; the starting point of the position interval does not exceed the first position, and the ending point does not exceed the second position; the third pressure threshold is greater than the first pressure threshold.

[0060] Specifically, during vehicle operation, there may be situations where the accelerator pedal needs to be quickly released. However, the engine's operation and exhaust flow may not keep up with the speed of accelerator pedal release. Therefore, the turbocharger will remain operational during this period, pressurizing the gas. However, the rapid reduction in accelerator pedal opening (throttle opening) causes a rapid increase in gas pressure inside the intercooler pipes. At this point, when the pressure sensor detects that the pressure inside the intercooler pipes is not less than a third pressure threshold, it will determine that the intercooler pipes need to be depressurized. The third pressure threshold is the pressure threshold required for depressurization during vehicle operation. It is used to determine whether over-boosting occurs during normal driving. If over-boosting occurs, depressurization is required. Therefore, the third pressure threshold is set higher than the first pressure threshold, and can be set to 5 bar. After receiving the signal indicating the need for depressurization (i.e., when the pressure value is not less than the third pressure threshold), the ECU will output a signal to the valve and battery, and adjust the valve position in real time based on the actual detected test pressure to ensure pressure stability. In this embodiment of the invention, each vehicle model can define the relationship between pressure and opening degree according to specific needs. Figure 4 The diagram shown illustrates the relationship between pressure and opening degree in an embodiment of the present invention. In this embodiment, the turbocharger's maximum boost ratio is 3.3, so the minimum safe pressure relief opening pressure can be set to 5 bar, corresponding to the minimum opening degree, and the maximum pressure relief value to 8 bar, corresponding to the maximum opening degree. It should be noted that each pressure threshold is pre-set according to the vehicle component model and is applied to various vehicle modes. For example, the first pressure threshold is specifically for the vehicle start-up mode; the second pressure threshold is specifically for the launch control mode; and the third pressure threshold is specifically for the vehicle pressure relief mode.

[0061] It should be noted that in practical applications, the relationship between the cross-sectional area of ​​the opening and the pressure inside the intercooling pipe is non-linear. For ease of understanding, an example in linear form will be provided.

[0062] Figure 5 shows a schematic diagram of the opening and closing valve position and gas flow path during turbocharger system depressurization. In this embodiment of the invention, when the pressure value in the intercooler pipe reaches 5 bar, it is determined that the intercooler pipe needs to be depressurized. The ECU outputs a signal to cause the battery to output voltage to the opening and closing valve, adjusting the valve position according to the actual pressure value obtained by the sensor and the relationship between pressure and opening degree. The starting point of the position range does not exceed the first position, and the ending point does not exceed the second position; that is, the opening and closing valve position range is limited only to the initial position and the limit. When the opening and closing valve is located... Figure 5A At the indicated position, the T-junction connects to the intercooler piping, bypass pipe, and engine throttle body. Air in the intercooler piping can be discharged through the bypass pipe, enter the air filter outlet pipe, and flow out from the exhaust pipe, thus achieving pressure relief. Figure 5BThe diagram shows a three-dimensional view of the three-way interface and the position of the on / off valve in an embodiment of the present invention. The position of the on / off valve is shown in the figure.

[0063] In this embodiment of the invention, the method further includes:

[0064] Check the turbocharger and / or the intercooler piping for faults;

[0065] If the turbocharger and / or the intercooler piping malfunctions, the on / off valve is set to the first position.

[0066] Specifically, when the intercooler piping or turbocharger malfunctions, the pressure sensor will detect a significant change in pressure, indicating a fault in the intercooler piping or turbocharger. The ECU will then output a signal to channel the battery voltage to the on / off valve, adjusting its position to the lower limit, thus closing the intercooler piping.

[0067] In this embodiment of the invention, detecting whether the turbocharger and / or the intercooler piping is faulty includes:

[0068] The pressure value is detected to see if it exceeds the fourth pressure threshold, and the pressure value of the intercooler pipe is detected to see if pressure fluctuation occurs.

[0069] If the detected pressure value does not exceed the fourth pressure threshold and the pressure value does not produce pressure fluctuations, then the turbocharger is determined to be faulty.

[0070] If the pressure value is detected to exceed the fourth pressure threshold, and the pressure value fluctuates, then it is detected whether the pressure value continues to exceed the fourth threshold within a preset time period.

[0071] If not, then the intercooling pipeline is confirmed to be faulty.

[0072] Specifically, in this embodiment of the invention, if the pressure sensor detects that the pressure value of the intercooler pipe does not exceed the fourth pressure threshold, and the pressure value of the intercooler pipe does not fluctuate, meaning the intercooler pipe pressure cannot be established and there is no pressure fluctuation, then a turbocharger malfunction in the vehicle can be determined. In this embodiment of the invention, the fourth pressure threshold can be set to 0 bar. If the pressure sensor detects that the pressure value of the intercooler pipe exceeds the fourth pressure threshold, and the intercooler pipe pressure fluctuates but cannot sustainably exceed the fourth pressure threshold, meaning there is a rupture point in the intercooler pipe, and leakage occurs after the pressure rises, causing the pressure to be unsustainable, then an intercooler pipe malfunction can be determined.

[0073] In this embodiment of the invention, the method further includes:

[0074] When the intercooler pipe malfunctions, the exhaust-side valve port is set to the open state so that the exhaust gas generated by the engine can be discharged from the exhaust-side valve port.

[0075] Specifically, such as Figure 6 The diagram illustrates the gas flow path during an intercooler pipe malfunction. When an intercooler pipe malfunction is confirmed, not only is the on / off valve adjusted to the first position to block the intercooler pipe, but the exhaust-side valve is also opened to block the air passage to the turbocharger. This allows air to escape from the exhaust-side valve port without passing through the turbocharger, achieving a gas-driven impeller action without boosting. Conversely, if the turbocharger malfunctions, only the on / off valve is adjusted to the first position to block the intercooler pipe, ensuring the vehicle operates in naturally aspirated mode; no turbocharger-related signal actions are required.

[0076] In this embodiment of the invention, obtaining the vehicle's driving mode includes:

[0077] Check whether the vehicle is powered on at the current time.

[0078] If so, then check whether the vehicle was powered on at the previous time point;

[0079] If not, then the driving mode is determined to be the first driving mode.

[0080] Specifically, in this embodiment of the invention, the first driving mode is the initial stage when the vehicle is first powered on. Since the turbocharger system only experiences insufficient air intake and the turbocharger not engaging when the vehicle is first powered on, the system detects whether the vehicle is powered on in the current time period, and if it is powered on at this moment, it also detects whether it was powered on in the previous time period. When it is determined that the vehicle is powered on only in the current time period, the vehicle can be identified as being in a newly powered-on state.

[0081] In this embodiment of the invention, obtaining the vehicle's driving mode further includes:

[0082] The system detects that the driver of the vehicle has selected launch control mode.

[0083] If so, then the driving mode is determined to be the second driving mode.

[0084] Specifically, in this embodiment of the invention, the second driving mode is a launch start mode. When the vehicle stops at a red light or in a racing situation, it detects whether the driver has selected a launch start option, such as the SPORT start mode. If the driver is detected to have selected a launch start option, it indicates that the vehicle has entered the second driving mode.

[0085] In this embodiment of the invention, the method includes:

[0086] If the pressure value of the intercooling pipeline is less than the third pressure threshold, the on / off valve is set to the second position.

[0087] Specifically, when the vehicle is in a depressurized state, the ECU checks whether the pressure value in the intercooler pipe is less than the third pressure threshold. If the detected pressure value is less than the third pressure threshold, the ECU outputs a signal to make the battery output voltage reach the opening and closing valve, and adjusts the opening and closing valve to return to its initial position, i.e., the second position.

[0088] By adopting the technical solution of this application embodiment, the vehicle's driving mode and intercooler pipeline pressure value can be obtained, and the position of the opening and closing valve can be adjusted in real time according to the vehicle's driving mode and the actual detected pressure value to ensure the vehicle's optimal fuel ratio, improve the overall vehicle driving performance, and realize the state switching between naturally aspirated and turbocharged vehicle models.

[0089] It should be noted that, for the sake of simplicity, the method embodiments are all described as a series of actions. However, those skilled in the art should understand that the embodiments of the present invention are not limited to the described order of actions, because according to the embodiments of the present invention, some steps can be performed in other orders or simultaneously. Furthermore, those skilled in the art should also understand that the embodiments described in the specification are preferred embodiments, and the actions involved are not necessarily essential to the embodiments of the present invention.

[0090] Reference Figure 7 This diagram illustrates a structural block diagram of a turbocharger system device provided by an embodiment of the present invention. Specifically, it may include the following modules: an air filter intake pipe, an air filter assembly, an air filter outlet pipe, a turbocharger, an intercooler pipe, an intercooler, a pressure sensor, an on / off valve, a bypass pipe, an engine, and an electronic control unit. The pressure sensor is used to acquire the vehicle's driving mode and the pressure value of the intercooler pipe, wherein:

[0091] The pressure sensor is used to obtain the vehicle's driving mode and the pressure value of the intercooler pipe.

[0092] The electronic control unit (ECU) is configured to set the opening and closing valve to a first position if the driving mode is the first driving mode and the pressure value of the intercooler pipe is less than a first pressure threshold, so that the engine is connected to the bypass pipe through the opening and closing valve and air enters the engine through the bypass pipe and the opening and closing valve.

[0093] The electronic control unit (ECU) is configured to set the on / off valve to a second position if the driving mode is the first driving mode and the pressure value of the intercooler pipe is not less than the first pressure threshold, so that the intercooler pipe is connected to the engine through the on / off valve and air enters the engine through the turbocharger, the intercooler pipe and the on / off valve.

[0094] In this embodiment of the invention, it further includes:

[0095] The electronic control unit (ECU) is configured to set the opening / closing valve to the first position if the driving mode is the second driving mode.

[0096] The electronic control unit (ECU) is used to detect whether the pressure value is less than a second pressure threshold.

[0097] The electronic control unit (ECU) is configured to set the on / off valve to the second position if not otherwise.

[0098] In this embodiment of the invention, it further includes:

[0099] The electronic control unit (ECU) is used to set the position of the opening and closing valve corresponding to the pressure value within a preset position range if the pressure value is not less than a third pressure threshold; the starting point of the position range does not exceed the first position and the ending point does not exceed the second position.

[0100] In this embodiment of the invention, it further includes:

[0101] The electronic control unit (ECU) is used to detect whether the turbocharger and / or the intercooler piping is faulty;

[0102] The electronic control unit (ECU) is configured to set the on / off valve to the first position if the turbocharger and / or the intercooler piping malfunctions.

[0103] In this embodiment of the invention, it includes:

[0104] The electronic control unit (ECU) is used to detect whether the pressure value of the intercooler pipe exceeds the fourth pressure threshold, and to detect whether the pressure value of the intercooler pipe fluctuates.

[0105] The electronic control unit (ECU) is configured to determine that the turbocharger is faulty if it detects that the pressure value does not exceed the fourth pressure threshold and that the pressure value does not produce pressure fluctuations.

[0106] The electronic control unit (ECU) is used to detect whether the pressure value of the intercooler pipe continues to exceed the fourth pressure threshold within a preset time period if the pressure value is detected to exceed the fourth pressure threshold and the pressure value fluctuates.

[0107] The electronic control unit (ECU) is used to determine, if not, that a fault has occurred in the intercooler piping.

[0108] In this embodiment of the invention, it further includes:

[0109] The electronic control unit (ECU) is used to set the exhaust-side valve port to the open state when the intercooler pipe malfunctions, so that the exhaust gas generated by the engine can be discharged from the exhaust-side valve port.

[0110] In this embodiment of the invention, it further includes:

[0111] The electronic control unit (ECU) is used to detect whether the vehicle is powered on at the current time.

[0112] The electronic control unit (ECU) is used to detect whether the vehicle was powered on at the previous time point if so.

[0113] The electronic control unit (ECU) is used to determine, if not, that the driving mode is the first driving mode.

[0114] In this embodiment of the invention, it further includes:

[0115] The electronic control unit (ECU) is used to detect when the driver of the vehicle selects launch control mode;

[0116] The electronic control unit (ECU) is used to determine the driving mode as the second driving mode if the condition is met.

[0117] In this embodiment of the invention, it further includes:

[0118] The electronic control unit (ECU) is configured to set the on / off valve to the second position if the pressure value of the intercooler pipe is less than the third pressure threshold.

[0119] As the device embodiment is basically similar to the method embodiment, the description is relatively simple, and relevant parts can be found in the description of the method embodiment.

[0120] By adopting the technical solution of this application embodiment, the vehicle's driving mode and intercooler pipeline pressure value can be obtained, and the position of the opening and closing valve can be adjusted in real time according to the vehicle's driving mode and the actual detected pressure value, thereby realizing the state switching between naturally aspirated and turbocharged vehicle models.

[0121] This invention also provides a vehicle, comprising:

[0122] It includes a processor, a memory, and a computer program stored in the memory and capable of running on the processor. When the computer program is executed by the processor, it implements the various processes of the above-described turbocharger system control method embodiments and achieves the same technical effects. To avoid repetition, it will not be described again here.

[0123] This invention also provides a computer-readable storage medium storing a computer program. When the computer program is executed by a processor, it implements the various processes of the above-described turbocharger system method embodiments and achieves the same technical effects. To avoid repetition, it will not be described again here.

[0124] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0125] Those skilled in the art will understand that embodiments of the present invention can be provided as methods, apparatus, or computer program products. Therefore, embodiments of the present invention can take the form of entirely hardware embodiments, entirely software embodiments, or embodiments combining software and hardware aspects. Furthermore, embodiments of the present invention can take the form of computer program products implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0126] This invention is described with reference to flowchart illustrations and / or block diagrams of methods, terminal devices (systems), and computer program products according to embodiments of the invention. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing terminal device to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing terminal device, generate instructions for implementing the flowchart illustrations and / or block diagrams. Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0127] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing terminal device to operate in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0128] These computer program instructions can also be loaded onto a computer or other programmable data processing terminal equipment, causing a series of operational steps to be performed on the computer or other programmable terminal equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable terminal equipment for implementing the process. Figure 1One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0129] Although preferred embodiments of the present invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of the embodiments of the present invention.

[0130] Finally, it should be noted that in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or terminal device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or terminal device. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or terminal device that includes said element.

[0131] The present invention has been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of the present invention. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of the present invention. Therefore, the content of this specification should not be construed as a limitation of the present invention.

Claims

1. A control method for a turbocharger system, characterized in that, The turbocharging system includes a turbocharger and an intercooler pipeline. The intercooler pipeline is connected to the engine via an on / off valve. The engine is also connected to a bypass pipe via the on / off valve. One end of the bypass pipe is connected upstream of the turbocharger, and the other end is connected downstream of the intercooler. A pressure sensor is installed upstream of the connection between the bypass pipe and the intercooler pipeline to obtain the pressure value of the intercooler pipeline. The method includes: Obtain the vehicle's driving mode and the pressure value of the intercooler pipe; If the driving mode is the first driving mode and the pressure value of the intercooler pipe is less than the first pressure threshold, then the opening and closing valve is set to the first position so that the intercooler pipe is blocked and the engine is connected to the bypass pipe through the opening and closing valve, and air enters the engine through the bypass pipe and the opening and closing valve. If the driving mode is the first driving mode and the pressure value of the intercooler pipe is not less than the first pressure threshold, then the on / off valve is set to the second position so that the connection between the side branch pipe and the engine is disconnected and the intercooler pipe is connected to the engine through the on / off valve, and air enters the engine through the turbocharger, the intercooler pipe and the on / off valve. If the driving mode is the second driving mode, then the opening and closing valve is set to the first position; Detect whether the pressure value is less than the second pressure threshold; If not, then set the opening / closing valve to the second position; The acquisition of the vehicle's driving mode includes: Check whether the vehicle is powered on at the current time. If so, then check whether the vehicle was powered on at the previous time point; If not, then the driving mode is determined to be the first driving mode; The method of obtaining the vehicle's driving mode also includes: The system detects that the driver of the vehicle has selected launch control mode. If so, then the driving mode is determined to be the second driving mode.

2. The control method for the turbocharging system according to claim 1, characterized in that, The method further includes: If the pressure value is not less than the third pressure threshold, then the position of the opening and closing valve corresponding to the pressure value is set within a preset position interval; the starting point of the position interval does not exceed the first position, and the ending point does not exceed the second position; the third pressure threshold is greater than the first pressure threshold.

3. The control method for the turbocharging system according to claim 1, characterized in that, The method further includes: Check the turbocharger and / or the intercooler piping for faults; If the turbocharger and / or the intercooler piping malfunctions, the on / off valve is set to the first position.

4. The control method for the turbocharging system according to claim 3, characterized in that, The detection of whether the turbocharger and / or the intercooler piping is faulty includes: The pressure value is detected to see if it exceeds the fourth pressure threshold, and the pressure value of the intercooler pipe is detected to see if pressure fluctuation occurs. If the detected pressure value does not exceed the fourth pressure threshold and the pressure value does not produce pressure fluctuations, then the turbocharger is determined to be faulty. If the pressure value is detected to exceed the fourth pressure threshold, and the pressure value fluctuates, then it is detected whether the pressure value continues to exceed the fourth threshold within a preset time period. If not, then the intercooling pipeline is confirmed to be faulty.

5. The control method for the turbocharging system according to claim 3, characterized in that, The exhaust pipe is connected to the exhaust-side valve; the method further includes: When the intercooler pipe malfunctions, the exhaust-side valve is set to the open state so that the exhaust gas generated by the engine is discharged from the exhaust-side valve.

6. The control method for a turbocharger system according to claim 2, characterized in that, The method further includes: If the pressure value of the intercooling pipeline is less than the third pressure threshold, the on / off valve is set to the second position.

7. A turbocharger, characterized in that, The device includes an air filter intake pipe, an air filter assembly, an air filter outlet pipe, a turbocharger, an intercooler pipe, an intercooler, a pressure sensor, an on / off valve, a bypass pipe, an engine, and an electronic control unit. The intercooler pipe is connected to the engine via the on / off valve, and the engine is also connected to the bypass pipe via the on / off valve. One end of the bypass pipe is connected upstream of the turbocharger, and the other end is connected downstream of the intercooler. The pressure sensor is installed upstream of the connection between the bypass pipe and the intercooler pipe. Obtain the vehicle's driving mode; The pressure sensor is used to acquire the pressure value of the intercooler pipe; The electronic control unit is configured to set the opening and closing valve to a first position if the driving mode is the first driving mode and the pressure value of the intercooler pipe is less than a first pressure threshold, so that the intercooler pipe is blocked and the engine is connected to the bypass pipe through the opening and closing valve, and air enters the engine through the bypass pipe and the opening and closing valve. The electronic control unit is configured to set the on / off valve to a second position if the driving mode is the first driving mode and the pressure value of the intercooler pipe is not less than the first pressure threshold, so as to disconnect the connection between the side branch pipe and the engine and connect the intercooler pipe to the engine through the on / off valve, and allow air to enter the engine through the turbocharger, the intercooler pipe and the on / off valve. The device further includes: The electronic control unit is configured to set the opening / closing valve to the first position if the driving mode is the second driving mode. The first detection submodule is used to detect whether the pressure value is less than the second pressure threshold. The second setting submodule is used to set the opening and closing valve to the second position if no; The device further includes: The electronic control unit is used to detect whether the vehicle is powered on at the current time. The electronic control unit is used to detect whether the vehicle was powered on at the previous time point if the condition is met. The electronic control unit is configured to determine, if not, that the driving mode is the first driving mode; The device further includes: The electronic control unit is used to detect when the driver of the vehicle selects the launch control mode; The electronic control unit is configured to determine the driving mode as the second driving mode if the condition is met.

8. A vehicle, characterized in that, include: A processor, a memory, and a computer program stored in the memory and capable of running on the processor, wherein the computer program, when executed by the processor, implements the steps of the control method for the turbocharger system as described in any one of claims 1 to 6.

9. A computer-readable storage medium, characterized in that, A computer program is stored on the computer-readable storage medium, which, when executed by a processor, implements the steps of the control method for the turbocharger system as described in any one of claims 1 to 6.

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