CN116220928A - Control method, device, equipment and medium for inhibiting surge of supercharger - Google Patents
Control method, device, equipment and medium for inhibiting surge of supercharger Download PDFInfo
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- CN116220928A CN116220928A CN202310319880.8A CN202310319880A CN116220928A CN 116220928 A CN116220928 A CN 116220928A CN 202310319880 A CN202310319880 A CN 202310319880A CN 116220928 A CN116220928 A CN 116220928A
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- 238000000034 method Methods 0.000 title claims abstract description 37
- 230000002401 inhibitory effect Effects 0.000 title abstract description 11
- 238000002347 injection Methods 0.000 claims abstract description 98
- 239000007924 injection Substances 0.000 claims abstract description 98
- 238000012544 monitoring process Methods 0.000 claims description 6
- 238000012935 Averaging Methods 0.000 claims description 4
- 230000009467 reduction Effects 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 12
- 239000000446 fuel Substances 0.000 description 9
- 238000004590 computer program Methods 0.000 description 7
- 230000006870 function Effects 0.000 description 5
- 230000008859 change Effects 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 230000008030 elimination Effects 0.000 description 2
- 238000003379 elimination reaction Methods 0.000 description 2
- 230000010349 pulsation Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
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- 230000001629 suppression Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D23/00—Controlling engines characterised by their being supercharged
- F02D23/02—Controlling engines characterised by their being supercharged the engines being of fuel-injection type
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B37/00—Engines characterised by provision of pumps driven at least for part of the time by exhaust
- F02B37/12—Control of the pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/30—Controlling fuel injection
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B37/00—Engines characterised by provision of pumps driven at least for part of the time by exhaust
- F02B37/12—Control of the pumps
- F02B2037/125—Control for avoiding pump stall or surge
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
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- Engineering & Computer Science (AREA)
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- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Supercharger (AREA)
Abstract
The embodiment of the application provides a control method, a device, equipment and a medium for inhibiting surge of a supercharger, wherein the method can directly judge whether the supercharger is in surge or not according to inlet pressure of the supercharger and ambient pressure; and/or gradually reducing the oil injection quantity of the engine according to a preset step length, stopping reducing the oil injection quantity of the engine after the surge of the supercharger disappears, and reducing the oil injection quantity of the engine to realize the active load reduction of the engine so as to effectively inhibit the surge.
Description
Technical Field
The present disclosure relates to the field of engine technologies, and in particular, to a control method, apparatus, device, and medium for suppressing surge of a supercharger.
Background
When the engine is running, a surge phenomenon may occur, and engine surge is a low-frequency and high-amplitude oscillation phenomenon that occurs in the direction of the axis of the supercharger compressor of the engine. When the engine is running, the direction of air entering the compressor working impeller and the diffuser of the supercharger deviates from the design working condition, and the airflow at the back of the blade is separated and continuously expands, so that strong pulsation is caused and the air flows backwards.
Surging is extremely harmful to the engine, where the engine is in an unstable operating condition, with a greater likelihood of damaging the engine, and must be inhibited by action.
Disclosure of Invention
The embodiment of the application provides a control method, a device, equipment and a medium for inhibiting the surge of a supercharger, which are used for improving the reliability of the recognition of the surge of the supercharger and effectively inhibiting the surge.
In a first aspect, an embodiment of the present application provides a control method for suppressing a surge of a supercharger, including:
judging whether the supercharger is in surge or not according to the monitored inlet pressure and the ambient pressure of the supercharger of the engine;
if the supercharger is determined to surge, determining a limit oil injection quantity according to a preset rule, and injecting oil according to the limit oil injection quantity; and/or gradually reducing the oil injection quantity of the engine according to a preset step length, and stopping reducing the oil injection quantity of the engine after the surge of the supercharger disappears.
In some embodiments, the determining whether the supercharger is surging based on the monitored supercharger inlet pressure and ambient pressure of the engine comprises:
if the detected inlet pressure of the supercharger of the engine is greater than the ambient pressure, determining that the supercharger is in surge;
and if the detected inlet pressure of the supercharger of the engine is less than or equal to the ambient pressure, determining that the supercharger is not in surge.
In some embodiments, the determining whether the supercharger is surging based on the monitored supercharger inlet pressure and ambient pressure of the engine comprises:
and if the detected inlet pressure of the supercharger of the engine is greater than the ambient pressure and the difference between the maximum value of the inlet pressure of the supercharger and the minimum value of the inlet pressure of the supercharger in the preset time period is greater than the preset pressure difference, determining that the supercharger is in surge.
In some embodiments, after determining whether the supercharger is surging based on the monitored supercharger inlet pressure and ambient pressure of the engine, the method further comprises:
monitoring a pressure ratio of the supercharger and an intake air flow rate if it is determined that the supercharger is not surging, wherein the pressure ratio is a ratio of an outlet pressure of the supercharger to an inlet pressure of the supercharger;
and if the pressure ratio under the current air inlet flow is smaller than the preset pressure ratio under the current air inlet flow, alarming.
In some embodiments, the determining the limit fuel injection amount according to the preset rule includes:
and averaging a plurality of corresponding oil injection quantities of the supercharger when the previous surge disappears, and taking the obtained average oil injection quantity as the limited oil injection quantity.
In some embodiments, the determining the limit fuel injection amount according to the preset rule includes:
and determining the limited oil injection quantity according to the current engine speed based on the preset corresponding relation between the engine speed and the limited oil injection quantity.
In a second aspect, embodiments of the present application further provide a control device for suppressing a surge of a supercharger, including:
the judging unit is used for judging whether the supercharger is in surge or not according to the monitored inlet pressure and the ambient pressure of the supercharger of the engine;
the oil injection unit is used for determining a limited oil injection quantity according to a preset rule if the supercharger is determined to surge, and injecting oil according to the limited oil injection quantity; and/or gradually reducing the oil injection quantity of the engine according to a preset step length, and stopping reducing the oil injection quantity of the engine after the surge of the supercharger disappears.
In some embodiments, the determining unit is specifically configured to:
if the detected inlet pressure of the supercharger of the engine is greater than the ambient pressure, determining that the supercharger is in surge;
and if the detected inlet pressure of the supercharger of the engine is less than or equal to the ambient pressure, determining that the supercharger is not in surge.
In some embodiments, the determining unit is specifically configured to:
and if the detected inlet pressure of the supercharger of the engine is greater than the ambient pressure and the difference between the maximum value of the inlet pressure of the supercharger and the minimum value of the inlet pressure of the supercharger in the preset time period is greater than the preset pressure difference, determining that the supercharger is in surge.
In some embodiments, the system further comprises an alarm unit for:
monitoring a pressure ratio of the supercharger and an intake air flow rate if it is determined that the supercharger is not surging, wherein the pressure ratio is a ratio of an outlet pressure of the supercharger to an inlet pressure of the supercharger;
and if the pressure ratio under the current air inlet flow is smaller than the preset pressure ratio under the current air inlet flow, alarming.
In some embodiments, the fuel injection unit is specifically configured to:
and averaging a plurality of corresponding oil injection quantities of the supercharger when the previous surge disappears, and taking the obtained average oil injection quantity as the limited oil injection quantity.
In some embodiments, the fuel injection unit is specifically configured to:
and determining the limited oil injection quantity according to the current engine speed based on the preset corresponding relation between the engine speed and the limited oil injection quantity.
The embodiment of the application provides a control method, a device, equipment and a medium for inhibiting surge of a supercharger, wherein the method can directly judge whether the supercharger is in surge or not according to inlet pressure of the supercharger and ambient pressure; and/or gradually reducing the oil injection quantity of the engine according to a preset step length, stopping reducing the oil injection quantity of the engine after the surge of the supercharger disappears, and reducing the oil injection quantity of the engine to realize the active load reduction of the engine so as to effectively inhibit the surge.
Drawings
In order to more clearly illustrate the technical solutions of the present application, the drawings that are needed in the description of the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic illustration of a change in airflow of a surge occurring in a supercharger provided by an embodiment of the present application;
FIG. 2 is a schematic diagram of a change in turbocharger intake pressure as provided by an embodiment of the present application when surge occurs;
FIG. 3 is a flow chart of a control method for suppressing turbocharger surge according to an embodiment of the present application;
FIG. 4 is a schematic view of a surge line according to an embodiment of the present disclosure;
FIG. 5 is a schematic diagram of a control device for suppressing surge of a supercharger according to an embodiment of the present application;
fig. 6 is a schematic structural diagram of an electronic device according to an embodiment of the present application.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application are within the scope of the protection of the present application.
The exhaust gas turbocharger of the engine is divided into two parts, namely a turbine and a compressor which rotate coaxially, wherein the turbine receives the exhaust energy of the engine and drives a compressor rotor to rotate, and fresh air is sucked. When the engine runs, the direction of air entering the compressor working impeller and the diffuser of the supercharger deviates from the design working condition, the airflow at the back of the blade is separated and is continuously expanded, strong pulsation is caused, the phenomenon of gas backflow is caused, and the airflow change when surge occurs is shown in figure 1.
In actual measurement, the inlet pressure of the compressor is shown in fig. 2, and the inlet pressure of the air inlet is obviously increased in the period of time when the virtual coil is formed, which means that more serious surge occurs, the inlet pressure of the compressor is increased due to the backflow of air flow after the compressor with higher pressure, and meanwhile, the whole engine is driven to operate unstably, so that the inlet pressure of the compressor of the supercharger is increased, namely, the backflow of air is a key basis for identifying the surge of the supercharger, and the method is applicable to all types in the surge principle.
When surge occurs, the engine needs to be protected, and the most effective protection mode is that the engine actively drops load, so the embodiment of the application provides a control method for inhibiting the surge of the supercharger, as shown in fig. 3, the method comprises the following steps:
s301, judging whether the supercharger is in surge or not according to the monitored inlet pressure and the ambient pressure of the supercharger of the engine;
s302, if the surge of the supercharger is determined, determining a limit oil injection quantity according to a preset rule, and injecting oil according to the limit oil injection quantity; and/or gradually reducing the oil injection quantity of the engine according to a preset step length, and stopping reducing the oil injection quantity of the engine after the surge of the supercharger disappears.
The control method for inhibiting the surge of the supercharger can directly judge whether the supercharger is in surge or not according to the inlet pressure of the supercharger and the ambient pressure, is simple and reliable, determines the limit oil injection quantity according to the preset rule after the supercharger is in surge, and injects oil according to the limit oil injection quantity; and/or gradually reducing the oil injection quantity of the engine according to a preset step length, stopping reducing the oil injection quantity of the engine after the surge of the supercharger disappears, and reducing the oil injection quantity of the engine to realize the active load reduction of the engine so as to effectively inhibit the surge.
It is worth noting that since the compressor is part of the supercharger, and the supercharger surge is actually an anomaly in the compressor airflow, the supercharger inlet and outlet referred to in this application are actually the compressor inlet and outlet.
In a specific implementation, according to the detected inlet pressure and ambient pressure of the supercharger of the engine, judging whether the supercharger is in surge or not may specifically include:
if the detected inlet pressure of the supercharger of the engine is greater than the ambient pressure, determining that the supercharger is in surge; if the monitored supercharger inlet pressure of the engine is less than or equal to ambient pressure, it is determined that no surge has occurred in the supercharger.
The method is simple and reliable, and the method is used for identifying the surge of the supercharger directly according to the magnitude relation between the inlet pressure of the supercharger and the ambient pressure.
Furthermore, in order to improve the accuracy of the surge identification, the embodiment of the application can also judge whether the turbocharger is in surge by combining whether the inlet pressure of the turbocharger has fluctuation.
Specifically, if the detected inlet pressure of the supercharger of the engine is greater than the ambient pressure and the difference between the maximum value of the inlet pressure of the supercharger and the minimum value of the inlet pressure of the supercharger in a preset time period is greater than the preset pressure difference, determining that the supercharger is in surge; otherwise, it is determined that the supercharger is not surging.
As shown in the dashed circle part of fig. 2, the intake pressure of the supercharger has greatly fluctuated in this period, and the intake pressure in this period is greater than the ambient pressure, so that it is indicated that the supercharger has surge at this time, the preset period may be set to be a periodic period, for example, the preset period is 10s, then monitoring is performed in every 10s when the engine is running, it is determined whether the difference between the maximum value of the intake pressure of the supercharger and the minimum value of the intake pressure of the supercharger in this 10s is greater than the preset pressure difference, if so, it is determined that the supercharger has surge, otherwise, it is determined that the supercharger has not surge, and specifically, for example, the preset pressure difference may be set to be 1Kpa.
After the surge of the supercharger is determined, the surge is required to be restrained, and after the surge of the supercharger is determined, the limit oil injection quantity is determined according to a preset rule and oil injection is carried out according to the limit oil injection quantity; and/or gradually reducing the oil injection quantity of the engine according to a preset step length, and stopping reducing the oil injection quantity of the engine after the surge of the supercharger disappears.
Specifically, oil injection can be performed only according to the limited oil injection quantity, if the oil injection is performed according to the limited oil injection quantity, the surge is found to disappear, the suppression of the surge is completed, if the surge still exists, the oil injection quantity of the engine can be further gradually reduced according to a preset step length, and after the surge of the supercharger disappears, the oil injection quantity of the engine is stopped to be reduced; after the surge of the supercharger is determined, the oil injection quantity of the engine can be reduced step by step directly according to a preset step length, and after the surge of the supercharger disappears, the oil injection quantity of the engine is stopped to be reduced.
In this embodiment of the present application, the limiting fuel injection amount is determined according to a preset rule, and may be determined by the following two manners:
the first mode is that the corresponding oil injection quantity of the supercharger when the previous surge disappears is averaged, and the obtained average oil injection quantity is used as the limiting oil injection quantity; the method for determining the limited oil injection quantity is obtained based on the average of a plurality of oil injection quantities corresponding to the elimination of the previous surge, so that the limited oil injection quantity determined by the method is more in line with the actual demand, and the limited oil injection quantity can be determined more accurately, thereby inhibiting the surge.
The second mode is to determine the limited fuel injection quantity according to the current engine speed based on the preset corresponding relation between the engine speed and the limited fuel injection quantity. Because the engine speed also can influence the occurrence of surging, the application can obtain different oil injection amounts corresponding to different engine speeds according to actual tests, and the engine can not surge under the corresponding relation between the oil injection amounts and the engine speed, so that the limited oil injection amount can be determined according to the current engine speed based on the corresponding relation between the preset engine speed and the limited oil injection amount, and the limited oil injection amount can be determined more quickly, thereby inhibiting surging.
By determining the limiting fuel injection amount and/or gradually reducing the fuel injection amount of the engine in the above manner, the engine power can be reduced, so that the supercharger runs away from the surge region, and the surge can be eliminated.
In an implementation, after determining whether the supercharger is in surge according to the monitored inlet pressure of the supercharger of the engine and the ambient pressure, the method may further include:
if the supercharger is determined not to surge, monitoring the pressure ratio of the supercharger and the inlet air flow, wherein the pressure ratio is the ratio of the outlet pressure of the supercharger to the inlet pressure of the supercharger;
and if the pressure ratio under the current air inlet flow is smaller than the preset pressure ratio under the current air inlet flow, alarming.
In practice, whether the engine running state exceeds the pre-calibrated surge line is detected, that is, a curve based on the intake air flow and the preset pressure ratio is set to equivalently simulate the surge line, and a schematic diagram of the surge line is shown in fig. 4, and it can be seen from the diagram that the preset pressure ratio (2.6) corresponding to the intake air flow (0.4) at the black point position in the diagram is smaller than the actual pressure ratio (3.0), which represents that surge may exist, that is, the risk of surging is represented, at the moment, an alarm is given to remind the staff of the surge risk, and the staff can check the engine or run down to perform artificial active prevention.
In addition, the surge line can selectively activate the correction function based on the atmospheric temperature, the atmospheric pressure and the intercooling temperature under different operation boundaries, and the influence of the change of the three parameters on the operation boundary of the supercharger is the greatest, for example, the risk of surge caused by low atmospheric temperature, low atmospheric pressure or high intercooling temperature is greatly increased.
Based on the same conception, the embodiment of the application also provides a control device for suppressing the surge of the supercharger, the implementation of the device can be referred to the implementation of the method, and the repetition is omitted. As shown in fig. 5, the control device for suppressing the surge of the supercharger includes:
a judging unit 501, configured to judge whether a surge occurs in the supercharger according to the monitored inlet pressure of the supercharger of the engine and the ambient pressure;
the oil injection unit 502 is configured to determine a limited oil injection amount according to a preset rule if it is determined that the supercharger is in surge, and perform oil injection according to the limited oil injection amount; and/or gradually reducing the oil injection quantity of the engine according to a preset step length, and stopping reducing the oil injection quantity of the engine after the surge of the supercharger disappears.
In some embodiments, the determining unit 501 is specifically configured to:
if the detected inlet pressure of the supercharger of the engine is greater than the ambient pressure, determining that the supercharger is in surge;
if the monitored supercharger inlet pressure of the engine is less than or equal to ambient pressure, it is determined that no surge has occurred in the supercharger.
In some embodiments, the determining unit 501 is specifically configured to:
and if the detected inlet pressure of the supercharger of the engine is greater than the ambient pressure and the difference between the maximum value of the inlet pressure of the supercharger and the minimum value of the inlet pressure of the supercharger in the preset time period is greater than the preset pressure difference, determining that the supercharger is in surge.
In some embodiments, the system further comprises an alarm unit for:
if the supercharger is determined not to surge, monitoring the pressure ratio of the supercharger and the inlet air flow, wherein the pressure ratio is the ratio of the outlet pressure of the supercharger to the inlet pressure of the supercharger;
and if the pressure ratio under the current air inlet flow is smaller than the preset pressure ratio under the current air inlet flow, alarming.
In some embodiments, fueling unit 502 is specifically configured to:
and averaging a plurality of corresponding oil injection quantities when the supercharger is in the previous elimination of multiple surging, and taking the obtained average oil injection quantity as a limiting oil injection quantity.
In some embodiments, fueling unit 502 is specifically configured to:
and determining the limit oil injection quantity according to the current engine speed based on the preset corresponding relation between the engine speed and the limit oil injection quantity.
Based on the same conception, the embodiment of the present application further provides an electronic device, and the implementation of the electronic device may refer to the implementation of the above method, and the repetition is not repeated. As shown in fig. 6, the electronic device includes a memory 601 and a processor 602;
the memory 601 is used for storing instructions;
the processor 602 is configured to execute instructions stored in the memory 601, which when executed by the processor 602 causes the apparatus to perform any one of the methods described above.
Further, embodiments of the present application also provide a computer storage medium having instructions stored therein, which when run on a computer, cause the computer to perform the method of any of the above.
The embodiment of the application provides a control method, a device, equipment and a medium for inhibiting surge of a supercharger, wherein the method can directly judge whether the supercharger is in surge or not according to inlet pressure of the supercharger and ambient pressure; and/or gradually reducing the oil injection quantity of the engine according to a preset step length, stopping reducing the oil injection quantity of the engine after the surge of the supercharger disappears, and reducing the oil injection quantity of the engine to realize the active load reduction of the engine so as to effectively inhibit the surge.
It will be appreciated by those skilled in the art that embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to the application. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
It will be apparent to those skilled in the art that various modifications and variations can be made in the present application without departing from the spirit or scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims and the equivalents thereof, the present application is intended to cover such modifications and variations.
Claims (10)
1. A control method for suppressing surge of a supercharger, comprising:
judging whether the supercharger is in surge or not according to the monitored inlet pressure and the ambient pressure of the supercharger of the engine;
if the supercharger is determined to surge, determining a limit oil injection quantity according to a preset rule, and injecting oil according to the limit oil injection quantity; and/or gradually reducing the oil injection quantity of the engine according to a preset step length, and stopping reducing the oil injection quantity of the engine after the surge of the supercharger disappears.
2. The method of claim 1, wherein said determining whether a surge occurs in said supercharger based on a monitored supercharger inlet pressure and ambient pressure of the engine comprises:
if the detected inlet pressure of the supercharger of the engine is greater than the ambient pressure, determining that the supercharger is in surge;
and if the detected inlet pressure of the supercharger of the engine is less than or equal to the ambient pressure, determining that the supercharger is not in surge.
3. The method of claim 1, wherein said determining whether a surge occurs in said supercharger based on a monitored supercharger inlet pressure and ambient pressure of the engine comprises:
and if the detected inlet pressure of the supercharger of the engine is greater than the ambient pressure and the difference between the maximum value of the inlet pressure of the supercharger and the minimum value of the inlet pressure of the supercharger in the preset time period is greater than the preset pressure difference, determining that the supercharger is in surge.
4. The method of claim 1, wherein said determining whether said supercharger is surging based on said monitored supercharger inlet pressure and ambient pressure of the engine further comprises:
monitoring a pressure ratio of the supercharger and an intake air flow rate if it is determined that the supercharger is not surging, wherein the pressure ratio is a ratio of an outlet pressure of the supercharger to an inlet pressure of the supercharger;
and if the pressure ratio under the current air inlet flow is smaller than the preset pressure ratio under the current air inlet flow, alarming.
5. The method of claim 1, wherein said determining the limited injection amount according to the preset rule comprises:
and averaging a plurality of corresponding oil injection quantities of the supercharger when the previous surge disappears, and taking the obtained average oil injection quantity as the limited oil injection quantity.
6. The method of claim 1, wherein said determining the limited injection amount according to the preset rule comprises:
and determining the limited oil injection quantity according to the current engine speed based on the preset corresponding relation between the engine speed and the limited oil injection quantity.
7. A control device for suppressing surge of a supercharger, comprising:
the judging unit is used for judging whether the supercharger is in surge or not according to the monitored inlet pressure and the ambient pressure of the supercharger of the engine;
the oil injection unit is used for determining a limited oil injection quantity according to a preset rule if the supercharger is determined to surge, and injecting oil according to the limited oil injection quantity; and/or gradually reducing the oil injection quantity of the engine according to a preset step length, and stopping reducing the oil injection quantity of the engine after the surge of the supercharger disappears.
8. The apparatus of claim 7, wherein the determining unit is specifically configured to:
if the detected inlet pressure of the supercharger of the engine is greater than the ambient pressure, determining that the supercharger is in surge;
and if the detected inlet pressure of the supercharger of the engine is less than or equal to the ambient pressure, determining that the supercharger is not in surge.
9. An electronic device comprising a memory and a processor;
the memory is used for storing instructions;
the processor is configured to execute the memory-stored instructions, which when executed by the processor, cause the electronic device to perform the method of any of claims 1-6.
10. A computer storage medium having instructions stored therein which, when run on a computer, cause the computer to perform the method of any of claims 1-6.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310319880.8A CN116220928A (en) | 2023-03-27 | 2023-03-27 | Control method, device, equipment and medium for inhibiting surge of supercharger |
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| CN202310319880.8A CN116220928A (en) | 2023-03-27 | 2023-03-27 | Control method, device, equipment and medium for inhibiting surge of supercharger |
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| CN (1) | CN116220928A (en) |
Citations (9)
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