A calibrated supercharger surge elimination method and system

Abstract

A calibration-based turbocharger surge elimination method and system includes: shifting gears sequentially according to the vehicle's gear order; after each gear shift, sequentially accelerating the engine to a preset speed at full throttle and then rapidly releasing the throttle; using a preset mapping table of the correspondence between speed, gear, and torque filter coefficient; if surge occurs during rapid throttle release or gear shift, finding the torque filter coefficient corresponding to the preset speed at which surge occurs in the preset mapping table, and gradually reducing the torque filter coefficient according to a preset reduction benchmark until the surge is eliminated. This application eliminates the need for additional control devices, effectively reducing the complexity and cost of turbocharger surge control technology while improving the driving experience.

Description

Technical Field

[0001] This application relates to the field of electromechanical technology, specifically to a calibration-based turbocharger surge elimination method and system. Background Technology

[0002] A turbocharger improves engine power, fuel economy, and emissions performance by pre-compressing the air or combustible mixture entering the engine cylinders, thereby increasing its density. Due to these advantages, turbochargers are increasingly used in engines. However, under certain complex operating conditions, turbochargers may experience surge problems, leading to engine noise, affecting passenger comfort, and in severe cases, reducing engine performance.

[0003] Current turbocharger surge control technology mainly relies on adding control devices such as pressure relief valves, intake throttle valves, exhaust throttle valves, throttle valves, and EGR (Exhaust Gas Recirculation) valves to solve the turbocharger surge problem. For example, the engine control unit (ECU) outputs different anti-surge control signals to the intake throttle valve, EGR valve, and exhaust throttle valve according to different engine combustion modes to control turbocharger surge; or it obtains the minimum flow rate of gas entering the throttle valve to avoid compressor surge, compares the minimum flow rate with the throttle flow rate expected by the driver, and delays closing the throttle valve when the expected throttle flow rate is less than the minimum flow rate.

[0004] However, the method of solving the turbocharger surge problem by adding additional control devices has the disadvantages of complex structure and high cost. Summary of the Invention

[0005] This application provides a calibration-based turbocharger surge elimination method and system, which can solve the technical problems of complex structure and high cost in current turbocharger surge control technology.

[0006] To achieve the above objectives, in a first aspect, this application provides a calibration-based turbocharger surge elimination method, the method comprising:

[0007] Shift gears sequentially according to the vehicle's gear sequence. After each gear shift, increase the engine speed to the preset RPM at full throttle and then quickly release the throttle.

[0008] If surging occurs when rapidly releasing the accelerator:

[0009] According to the preset speed-torque filter coefficient mapping table, find the first torque filter coefficient corresponding to the preset speed when surge occurs, and gradually reduce the first torque filter coefficient with the preset reduction benchmark. After each reduction, accelerate the engine speed to the preset speed at which surge occurs and then quickly release the throttle until surge is eliminated.

[0010] If surge occurs during gear shifting:

[0011] According to the preset neutral speed-torque filter coefficient mapping table, the second torque filter coefficient corresponding to the neutral speed when surge occurs is found. The second torque filter coefficient is gradually reduced with a preset reduction benchmark. After each reduction, the shifting process that causes surge is repeated until surge is eliminated.

[0012] Furthermore, in one embodiment, if surge still exists when the first torque filter coefficient decreases to the preset minimum threshold of the torque filter coefficient, the corresponding third torque filter coefficient is found from the preset gear-speed-torque filter coefficient mapping table according to the gear and preset speed at which surge occurs.

[0013] The third torque filter coefficient is gradually reduced based on a preset reduction benchmark. After each reduction, the engine speed is increased to the preset speed at which the surge occurs, and then the throttle is released quickly until the surge is eliminated.

[0014] Furthermore, in one embodiment, if the speed-torque filter coefficient mapping table does not contain a preset speed when surge occurs, then a speed that is closest to and less than the preset speed is found in the mapping table, and the torque filter coefficient corresponding to the speed is used as the first torque filter coefficient.

[0015] If the gear-speed-torque filter coefficient mapping table does not contain the preset speed when surge occurs, find the third torque filter coefficient in the same way.

[0016] Furthermore, in one embodiment, the speeds in the speed-torque filter coefficient mapping table, gear-speed-torque filter coefficient mapping table, and neutral speed-torque filter coefficient mapping table are all divided into low-speed regions and high-speed regions, and the speed calibration interval in the low-speed region is smaller than the speed calibration interval in the high-speed region.

[0017] Furthermore, in one embodiment, the torque filtering coefficients in the speed-torque filtering coefficient mapping table, the gear-speed-torque filtering coefficient mapping table, and the neutral speed-torque filtering coefficient mapping table have different values ​​corresponding to different altitudes.

[0018] Furthermore, in one embodiment, the vehicle gear sequence is either increasing from low to high or decreasing from high to low.

[0019] Furthermore, in one embodiment, after surge elimination, the torque filtering coefficient that was reduced during surge elimination is gradually increased based on a preset callback benchmark, and then determined to the maximum value at which surge does not occur.

[0020] Furthermore, in one embodiment, the callback reference is less than the reduction reference, and the maximum value of no surge is less than the value of the torque filter coefficient after the previous reduction to eliminate surge.

[0021] Secondly, based on the above-mentioned calibration-based turbocharger surge elimination method, this application provides a calibration-based turbocharger surge elimination system, the turbocharger surge elimination system comprising:

[0022] The gear shift module is used to shift gears sequentially according to the vehicle's gear order.

[0023] The acceleration module is used to sequentially increase the engine speed to the preset speed at full throttle after each gear shift, and then quickly release the throttle.

[0024] Elimination module, which is used to eliminate surge.

[0025] If a surge occurs when the throttle is released suddenly, the elimination module finds the first torque filter coefficient corresponding to the preset speed at which the surge occurs based on the preset speed-torque filter coefficient mapping table, and gradually reduces the first torque filter coefficient with a preset reduction benchmark. After each reduction, the acceleration module accelerates the engine speed to the preset speed at which the surge occurs and then releases the throttle suddenly until the surge is eliminated.

[0026] If surge occurs during gear shifting: the elimination module finds the second torque filter coefficient corresponding to the neutral speed when surge occurs based on the preset neutral speed-torque filter coefficient mapping table, and gradually reduces the second torque filter coefficient with a preset reduction benchmark. After each reduction, the gear shifting process that causes surge is repeated until surge is eliminated.

[0027] Furthermore, in one embodiment, the turbocharger surge relief system further includes:

[0028] The callback module is used to gradually increase the torque filter coefficient that was reduced during surge elimination based on a preset callback benchmark, and determine it to the maximum value at which surge does not occur. The callback benchmark is less than the reduction benchmark, and the maximum value at which surge does not occur is less than the value of the torque filter coefficient after the previous reduction when surge was eliminated.

[0029] The beneficial effects of the technical solutions provided in this application include:

[0030] This application shifts gears sequentially according to the vehicle's gear order. After each gear shift, the engine speed is increased to the preset speed at full throttle and then the throttle is released abruptly. For surge situations that occur during sudden throttle release and gear shifting, a mapping table of the correspondence between preset speed, gear, and torque filter coefficient is used to reduce the torque attenuation rate by decreasing the torque filter coefficient, thereby eliminating surge. No additional control device is required, which effectively reduces the complexity and cost of turbocharger surge control technology and improves the driving experience. Attached Figure Description

[0031] Figure 1 This is a flowchart of a calibrated turbocharger surge elimination method according to an embodiment of this application.

[0032] Figure 2 This is a block diagram of a calibrated turbocharger surge elimination system according to an embodiment of this application. Detailed Implementation

[0033] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present application.

[0034] To make the objectives, technical solutions, and advantages of this application clearer, the embodiments of this application will be described in further detail below with reference to the accompanying drawings.

[0035] First, it's important to note that abruptly releasing the accelerator while driving, especially under conditions of low flow rate and high pressure ratio, causes a sharp decrease in intake air volume. Due to inertia, the turbocharger's turbine shaft cannot respond immediately, causing the turbocharger speed and boost pressure ratio to remain constant for a period. This results in the operating point reaching the turbocharger surge region. During the sudden drop from full throttle to zero throttle, the airflow angle is smaller than the compressor blade angle, causing the actual torque value to exceed the actual torque limit. At this point, the rate of torque reduction exceeds the rate of reduction of the actual torque limit, thus increasing the risk of surge.

[0036] In addition, during gear shifts, the rapid change in turbocharger turbine speed can lead to a decrease in engine power response and make the engine prone to surging.

[0037] In a first aspect, embodiments of this application provide a calibration-based turbocharger surge elimination method.

[0038] In one embodiment, see Figure 1 As shown, the above-mentioned turbocharger surge elimination method includes:

[0039] S1. Shift gears sequentially according to the vehicle's gear sequence. After each gear shift, increase the engine speed to the preset speed at full throttle and then quickly release the throttle.

[0040] S2. Determine the specific circumstances under which the surge occurs. If the surge occurs when the accelerator is released suddenly, proceed to S3; if the surge occurs during a gear shift, proceed to S4.

[0041] S3. According to the preset speed-torque filter coefficient mapping table, find the first torque filter coefficient corresponding to the preset speed when surge occurs, and gradually reduce the first torque filter coefficient with the preset reduction benchmark. After each reduction, accelerate the engine speed to the preset speed at which surge occurs and then quickly release the throttle until surge is eliminated.

[0042] S4. According to the preset neutral speed-torque filter coefficient mapping table, find the second torque filter coefficient corresponding to the neutral speed when surge occurs, and gradually reduce the second torque filter coefficient with a preset reduction benchmark. After each reduction, repeat the shifting process that causes surge until surge is eliminated.

[0043] This embodiment shifts gears sequentially according to the vehicle's gear order. After each gear shift, the engine speed is increased to a preset RPM at full throttle, then the throttle is abruptly released. A mapping table of the correspondence between preset RPM, gear, and torque filter coefficient is used. If surge occurs during abrupt throttle release or gear shift, the torque filter coefficient corresponding to the preset RPM at which surge occurs is found in the mapping table. This torque filter coefficient is then gradually reduced according to a preset reduction benchmark until the surge is eliminated. This embodiment eliminates the need for additional control devices, effectively simplifying turbocharger surge control technology, reducing technical costs, and improving the driving experience.

[0044] Furthermore, in one embodiment, in step S3 above, if surge occurs when the throttle is suddenly released:

[0045] S311. Determine whether the preset speed-torque filter coefficient mapping table contains the preset speed when surge occurs. If yes, proceed to step S312; otherwise, proceed to step S313.

[0046] S312. In the preset speed-torque filter coefficient mapping table, find the first torque filter coefficient corresponding to the preset speed when surge occurs, and gradually reduce the first torque filter coefficient with the preset reduction benchmark, and proceed to S314.

[0047] S313. In the preset speed-torque filter coefficient mapping table, find a speed that is closest to and less than the preset speed, and gradually reduce the first torque filter coefficient corresponding to the speed based on the preset reduction benchmark.

[0048] S314. After each reduction of the first torque filter coefficient, accelerate the engine speed to the preset speed at which the surge occurs and then quickly release the throttle until the surge is eliminated, then proceed to step S315.

[0049] S315. Gradually increase the first torque filter coefficient reduced to during surge elimination using a preset callback benchmark, and determine it to its maximum value at which surge does not occur. Specifically, the callback benchmark is less than the reduction benchmark, and the maximum value of the first torque filter coefficient at which surge does not occur is less than the value of the first torque filter coefficient after the previous reduction in value before surge elimination. If the value of the first torque filter coefficient after the previous reduction in value before surge elimination is M, and the maximum value of the first torque filter coefficient at which surge does not occur after the callback is N, then N... <M。

[0050] In this embodiment, based on the preset speed-torque filter coefficient mapping table, the surge that occurs when the accelerator is released suddenly is eliminated by gradually reducing the torque filter coefficient and checking the method. By adjusting the torque filter coefficient, the problem of insufficient deceleration after the driver releases the accelerator due to the torque filter coefficient being too small is avoided to a certain extent, thus preventing the driver from frequently stepping on the brake. This improves the driving experience and enhances driving comfort.

[0051] Furthermore, in one embodiment, when the first torque filter coefficient in step S3 decreases to a preset minimum threshold for the torque filter coefficient, if the vehicle still experiences surge, the step of eliminating surge includes:

[0052] S321. Determine whether the preset gear-speed-torque filter coefficient mapping table contains the preset speed when surge occurs. If yes, proceed to step S322; otherwise, proceed to step S323.

[0053] S322. In the preset gear-speed-torque filter coefficient mapping table, find the third torque filter coefficient corresponding to the preset speed when surge occurs, and gradually reduce the third torque filter coefficient with the preset reduction benchmark, and proceed to S324.

[0054] S323. In the preset gear-speed-torque filter coefficient mapping table, find the speed that is closest to and less than the preset speed, and gradually reduce the third torque filter coefficient corresponding to the speed based on the preset reduction benchmark.

[0055] S324. After each reduction of the third torque filter coefficient, accelerate the engine speed to the preset speed at which the surge occurs and then quickly release the throttle until the surge is eliminated, then proceed to step S325.

[0056] S325. Gradually increase the third torque filter coefficient, which was reduced during surge elimination, based on a preset callback benchmark, and determine it to its maximum value where surge does not occur. Specifically, the callback benchmark is less than the reduction benchmark, and the maximum value of the third torque filter coefficient without surge is less than the value of the third torque filter coefficient after the previous reduction in surge elimination. If the value of the third torque filter coefficient after the previous reduction in surge elimination is X, and the maximum value of the third torque filter coefficient without surge after the callback is Y, then Y... <X。

[0057] Furthermore, in one embodiment, the speeds in the aforementioned speed-torque filter coefficient mapping table, gear-speed-torque filter coefficient mapping table, and neutral speed-torque filter coefficient mapping table are all divided into low-speed and high-speed regions, and the speed calibration interval in the low-speed region of each mapping table is smaller than the speed calibration interval in the high-speed region. Specifically:

[0058] In each mapping table, a preset partition value is used to classify the speeds of the vehicle that are lower than this partition value as low speed regions and the speeds of the vehicle that are higher than this partition value as high speed regions. The low speed regions correspond to the first speed interval, the high speed regions correspond to the second speed interval, and the first speed interval is smaller than the second speed interval.

[0059] In this embodiment, by dividing the low-speed region and the high-speed region, the speeds in the speed-torque filter coefficient mapping table, the gear-speed-torque filter coefficient mapping table, and the neutral speed-torque filter coefficient mapping table are calibrated at different speed intervals, thereby improving the accuracy of the correspondence between speed and torque filter coefficients.

[0060] Furthermore, in one embodiment, the torque filtering coefficients in the aforementioned speed-torque filtering coefficient mapping table, gear-speed-torque filtering coefficient mapping table, and neutral speed-torque filtering coefficient mapping table have different values ​​corresponding to different altitudes.

[0061] In this embodiment, by setting different torque filtering coefficients at different altitudes, this application embodiment can be used to eliminate the surge that occurs when a vehicle is driving at different altitudes, shifting gears, accelerating the engine to full throttle and then suddenly releasing the throttle, thereby improving the applicability of this application embodiment.

[0062] Furthermore, in one embodiment, the vehicle's gears are shifted sequentially from low to high, or from high to low. Specifically, shifting up can be done in the order of 0-1, 1-2, 2-3, 3-4, 4-5, 5-6, and shifting down can be done in the order of 6-5, 5-4, 4-3, 3-2, 2-1.

[0063] Furthermore, in one embodiment, in order to avoid missing the occurrence of surge, the above-mentioned gear shifting is performed multiple times, and in each gear after the shift, the engine speed is sequentially increased to each preset speed at full throttle and then the throttle is released abruptly.

[0064] Secondly, based on the aforementioned calibration-based turbocharger surge elimination method, an embodiment of a calibration-based turbocharger surge elimination system is provided. See also... Figure 2 As shown, the above system includes a shifting module, an acceleration module, and an elimination module, specifically:

[0065] The gear shift module is used to shift gears sequentially according to the vehicle's gear order.

[0066] The acceleration module is used to sequentially increase the engine speed to the preset speed at full throttle after each gear shift, and then quickly release the throttle.

[0067] Elimination module, which is used to eliminate surge.

[0068] If a surge occurs when the throttle is released suddenly, the elimination module finds the first torque filter coefficient corresponding to the preset speed at which the surge occurs based on the preset speed-torque filter coefficient mapping table, and gradually reduces the first torque filter coefficient with a preset reduction benchmark. After each reduction, the acceleration module accelerates the engine speed to the preset speed at which the surge occurs and then releases the throttle suddenly until the surge is eliminated.

[0069] If surge occurs during gear shifting: the elimination module finds the second torque filter coefficient corresponding to the neutral speed when surge occurs based on the preset neutral speed-torque filter coefficient mapping table, and gradually reduces the second torque filter coefficient with a preset reduction benchmark. After each reduction, the gear shifting process that causes surge is repeated until surge is eliminated.

[0070] Furthermore, in one embodiment, the turbocharger surge elimination system further includes a callback module, which is used to gradually increase the torque filter coefficient reduced during surge elimination by a preset callback reference after surge elimination, and determine it to the maximum value at which surge does not occur. The callback reference is less than the reduction reference, and the maximum value at which surge does not occur is less than the value of the torque filter coefficient after the previous reduction before surge elimination.

[0071] This application categorizes surge occurrences into two scenarios: sudden throttle release during vehicle operation and gear shifting. Each scenario corresponds to a different elimination mode. Depending on the surge scenario, the appropriate elimination mode can be selected to eliminate surge. Each elimination mode corresponds to a different mapping table of speed, gear, and torque filter coefficients. By reducing the torque filter coefficient corresponding to the speed or gear at which surge occurs, or by adjusting the torque filter coefficient based on the speed and gear at which surge occurs, the torque decay rate is reduced, thereby eliminating surge. For turbochargers without a throttle body and EGR, this application eliminates surge without requiring additional control devices, effectively reducing the cost of surge elimination technology.

[0072] It should be noted that the sequence numbers of the embodiments in this application are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments.

[0073] The terms "comprising" and "having," and any variations thereof, in the specification, claims, and accompanying drawings of this application are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or apparatus that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to such process, method, product, or apparatus. The terms "first," "second," and "third," etc., are used to distinguish different objects, etc., and do not indicate a sequence, nor do they limit "first," "second," and "third" to different types.

[0074] In the description of the embodiments of this application, terms such as "exemplary," "for example," or "for instance" are used to indicate examples, illustrations, or explanations. Any embodiment or design described as "exemplary," "for example," or "for instance" in the embodiments of this application should not be construed as being more preferred or advantageous than other embodiments or designs. Specifically, the use of terms such as "exemplary," "for example," or "for instance" is intended to present the relevant concepts in a concrete manner.

[0075] In the description of the embodiments of this application, unless otherwise stated, " / " means "or". For example, A / B can mean A or B. The "and / or" in the text is merely a description of the relationship between related objects, indicating that there can be three relationships. For example, A and / or B can mean: A exists alone, A and B exist simultaneously, and B exists alone. In addition, in the description of the embodiments of this application, "multiple" means two or more.

[0076] In some processes described in the embodiments of this application, multiple operations or steps are included in a specific order. However, it should be understood that these operations or steps may not be executed in the order they appear in the embodiments of this application, or they may be executed in parallel. The sequence number of the operation is only used to distinguish different operations, and the sequence number itself does not represent any execution order. In addition, these processes may include more or fewer operations, and these operations or steps may be executed sequentially or in parallel, and these operations or steps may be combined.

[0077] Through the above description of the embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus necessary general-purpose hardware platforms. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) as described above, and includes several instructions to cause a terminal device to execute the methods described in the various embodiments of this application.

[0078] The above are merely preferred embodiments of this application and do not limit the patent scope of this application. Any equivalent structural or procedural transformations made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.

Claims

1. A method for eliminating turbocharger surge based on calibration, characterized in that, The method includes: Shift gears sequentially according to the vehicle's gear sequence. After each gear shift, accelerate the engine to the preset speed at full throttle and then quickly release the throttle. If surging occurs when rapidly releasing the accelerator: According to the preset speed-torque filter coefficient mapping table, find the first torque filter coefficient corresponding to the preset speed when surge occurs, and gradually reduce the first torque filter coefficient with the preset reduction benchmark. After each reduction, accelerate the engine speed to the preset speed when surge occurs and then quickly release the throttle until surge is eliminated. If surge occurs during gear shifting: According to the preset neutral speed-torque filter coefficient mapping table, the second torque filter coefficient corresponding to the neutral speed when surge occurs is found. The second torque filter coefficient is gradually reduced with a preset reduction benchmark. After each reduction, the shifting process that causes surge is repeated until surge is eliminated.

2. The method for eliminating turbocharger surge based on calibration as described in claim 1, characterized in that, If surge still exists when the first torque filter coefficient decreases to the preset minimum threshold of the torque filter coefficient, the corresponding third torque filter coefficient is found from the preset gear-speed-torque filter coefficient mapping table according to the gear and preset speed at which surge occurs. The third torque filter coefficient is gradually reduced based on a preset reduction benchmark. After each reduction, the engine speed is increased to the preset speed at which the surge occurs, and then the throttle is released quickly until the surge is eliminated.

3. The method for eliminating turbocharger surge based on calibration as described in claim 2, characterized in that, If the speed-torque filter coefficient mapping table does not contain the preset speed when surge occurs, then find the speed in the mapping table that is closest to and less than the preset speed, and use the torque filter coefficient corresponding to the speed as the first torque filter coefficient. If the gear-speed-torque filter coefficient mapping table does not contain the preset speed when surge occurs, find the third torque filter coefficient in the same way.

4. The method for eliminating turbocharger surge based on calibration as described in claim 2, characterized in that, The rotational speeds in the speed-torque filter coefficient mapping table, gear-speed-torque filter coefficient mapping table, and neutral speed-torque filter coefficient mapping table are all divided into low-speed regions and high-speed regions, and the speed calibration interval in the low-speed region is smaller than the speed calibration interval in the high-speed region.

5. The method for eliminating turbocharger surge based on calibration as described in claim 2, characterized in that, The torque filtering coefficients in the speed-torque filtering coefficient mapping table, gear-speed-torque filtering coefficient mapping table, and neutral speed-torque filtering coefficient mapping table have different values ​​corresponding to different altitudes.

6. The method for eliminating turbocharger surge based on calibration as described in claim 1, characterized in that, The vehicle's gear sequence is either increasing from low to high or decreasing from high to low.

7. The method for eliminating turbocharger surge based on calibration as described in claim 1, characterized in that, After eliminating surge, the torque filtering coefficient that was reduced during surge elimination is gradually increased based on a preset callback benchmark, and then determined to be the maximum value at which surge does not occur.

8. The method for eliminating turbocharger surge based on calibration as described in claim 7, characterized in that, The callback benchmark is less than the reduction benchmark, and the maximum value of no surge is less than the value of the torque filter coefficient after the previous reduction to eliminate surge.

9. A turbocharger surge elimination system based on the calibration-based turbocharger surge elimination method according to any one of claims 1-8, characterized in that, The turbocharger surge relief system includes: The gear shifting module is used to shift gears sequentially according to the vehicle's gear order. The acceleration module is used to sequentially increase the engine speed to the preset speed at full throttle in each gear after each gear shift, and then quickly release the throttle. An elimination module, used to eliminate surge; If a surge occurs when the throttle is released suddenly, the elimination module finds the first torque filter coefficient corresponding to the preset speed at which the surge occurs according to the preset speed-torque filter coefficient mapping table, and gradually reduces the first torque filter coefficient with a preset reduction benchmark. After each reduction, the acceleration module accelerates the engine speed to the preset speed at which the surge occurs and then releases the throttle suddenly until the surge is eliminated. If surge occurs during gear shifting: the elimination module finds the second torque filter coefficient corresponding to the neutral speed when surge occurs based on the preset neutral speed-torque filter coefficient mapping table, and gradually reduces the second torque filter coefficient with a preset reduction benchmark. After each reduction, the gear shifting process that causes surge is repeated until surge is eliminated.

10. A turbocharger surge elimination system based on a calibrated turbocharger surge elimination method as described in claim 9, characterized in that, The turbocharger surge relief system also includes: The callback module is used to gradually increase the torque filter coefficient that was reduced during surge elimination based on a preset callback benchmark, and determine it to the maximum value at which surge does not occur. The callback benchmark is less than the reduction benchmark, and the maximum value at which surge does not occur is less than the value of the torque filter coefficient after the previous reduction when surge was eliminated.

Images