CN113153546A - Exhaust gas turbocharger protection method and device - Google Patents
Exhaust gas turbocharger protection method and device Download PDFInfo
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- CN113153546A CN113153546A CN202110494888.9A CN202110494888A CN113153546A CN 113153546 A CN113153546 A CN 113153546A CN 202110494888 A CN202110494888 A CN 202110494888A CN 113153546 A CN113153546 A CN 113153546A
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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
- F02D41/0002—Controlling intake air
- F02D41/0007—Controlling intake air for control of turbo-charged or super-charged engines
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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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- 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)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Combined Controls Of Internal Combustion Engines (AREA)
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
- Supercharger (AREA)
- Output Control And Ontrol Of Special Type Engine (AREA)
Abstract
The application provides a method and a device for protecting an exhaust gas turbocharger, wherein the method comprises the following steps: acquiring an atmospheric pressure value and various operation indexes of an engine in real time; and judging whether the engine is in a low-gear transient working condition or not according to all the operation indexes of the engine, if so, searching a transient protection oil mass corresponding to one operation index of all the operation indexes of the engine and an atmospheric pressure value in a preset transient supercharger protection map, and setting the maximum oil injection quantity of the engine according to the transient protection oil mass. In this technical scheme, predetermine transient state booster protection map, when determining that the engine is in low-gear transient state operating mode, through seeking transient state booster protection map, determine the transient state protection oil mass to according to the transient state protection oil mass, set up the maximum fuel injection quantity of engine, thereby ensure under low-gear transient state operating mode that exhaust gas turbocharger can not appear the overspeed damage.
Description
Technical Field
The application relates to the technical field of engine control, in particular to a method and a device for protecting an exhaust gas turbocharger.
Background
After the engine with the exhaust gas turbocharger reaches a plateau area, the rotating speed of the exhaust gas turbocharger can be increased due to the fact that the exhaust pressure is reduced, and the exhaust gas turbocharger of the engine in the plateau area can have overspeed risk, so that the exhaust gas turbocharger is damaged.
In the prior art, in order to prevent the exhaust gas turbocharger from being damaged in an overspeed manner, the maximum fuel injection quantity of the engine is calibrated usually based on a preset steady-state supercharger protection map, and the engine does not overspeed under a high-gear steady-state working condition after calibration, but the exhaust gas turbocharger can also generate a transient overspeed phenomenon under a low-gear transient working condition.
Therefore, how to provide a technical solution for ensuring that the exhaust gas turbocharger does not have overspeed damage under the low-gear transient operating condition is a problem to be solved urgently by those skilled in the art.
Disclosure of Invention
The technical problem that the application will solve is to provide an exhaust gas turbocharger protection method to ensure that under the low-gear transient operating condition, the exhaust gas turbocharger cannot be damaged in an overspeed manner.
The application also provides a protection device of the exhaust gas turbocharger, which is used for ensuring the realization and the application of the method in practice.
A method of protecting an exhaust turbocharger comprising:
acquiring an atmospheric pressure value and various operation indexes of an engine in real time;
judging whether the engine is in a low-gear transient working condition or not according to various running indexes of the engine;
if the engine is in a low-gear transient working condition, searching a transient protection oil quantity corresponding to one of various operation indexes of the engine and the atmospheric pressure value in a preset transient supercharger protection map;
and setting the maximum fuel injection quantity of the engine according to the transient protection fuel quantity.
In the method, optionally, the operation indexes of the engine include an engine speed, an engine speed change rate and an engine fuel injection amount.
Optionally, the searching for the transient protection oil amount corresponding to one of the operating indexes of the engine and the atmospheric pressure value includes:
and searching the transient protection oil quantity corresponding to the engine rotating speed and the atmospheric pressure value in a preset transient supercharger protection map.
The method described above, optionally, the determining whether the engine is in the low gear transient operating condition includes:
judging whether the engine speed, the engine speed change rate and the engine fuel injection quantity all meet respective corresponding preset conditions;
if so, determining that the engine is in a low-gear transient working condition;
and if not, determining that the engine is not in the low-gear transient working condition.
The above method, optionally, further includes:
if the engine is not in the low-gear transient working condition, searching a steady-state protection oil quantity corresponding to one of the running indexes of the engine and the atmospheric pressure value in a preset steady-state supercharger protection map;
and setting the maximum fuel injection quantity of the engine according to the steady-state protection fuel quantity.
An exhaust-gas turbocharger protection device comprising:
the acquisition unit is used for acquiring the atmospheric pressure value and various operation indexes of the engine in real time;
the judging unit is used for judging whether the engine is in a low-gear transient working condition or not according to various running indexes of the engine;
the first searching unit is used for searching the transient protection oil quantity corresponding to one of various operation indexes of the engine and the atmospheric pressure value in a preset transient supercharger protection map if the engine is in a low-gear transient working condition;
and the first setting unit is used for setting the maximum oil injection quantity of the engine according to the transient protection oil quantity.
In the above device, optionally, each operation index of the engine includes an engine speed, an engine speed change rate, and an engine fuel injection amount.
Optionally, the above device, where the first searching unit is configured to search for the transient protection oil amount corresponding to one of the operation indexes of the engine and the atmospheric pressure value, includes that the first searching unit is specifically configured to:
and searching the transient protection oil quantity corresponding to the engine rotating speed and the atmospheric pressure value in a preset transient supercharger protection map.
Optionally, the above apparatus, where the determining unit is configured to determine whether the engine is in a low-gear transient operating condition, includes that the determining unit is specifically configured to:
judging whether the engine speed, the engine speed change rate and the engine fuel injection quantity all meet respective corresponding preset conditions;
if so, determining that the engine is in a low-gear transient working condition;
and if not, determining that the engine is not in the low-gear transient working condition.
The above apparatus, optionally, further comprises:
the second searching unit is used for searching a steady-state protection oil quantity corresponding to one of various operation indexes of the engine and the atmospheric pressure value in a preset steady-state supercharger protection map if the engine is not in a low-gear transient working condition;
and the second setting unit is used for setting the maximum oil injection quantity of the engine according to the steady-state protection oil quantity.
A storage medium comprising stored instructions, wherein the instructions, when executed, control an apparatus in which the storage medium is located to perform the exhaust turbocharger protection method described above.
An electronic device comprising a memory, and one or more instructions, wherein the one or more instructions are stored in the memory and configured to be executed by one or more processors to perform the exhaust turbocharger protection method described above.
Compared with the prior art, the method has the following advantages:
the application provides a method and a device for protecting an exhaust gas turbocharger, wherein the method comprises the following steps: acquiring an atmospheric pressure value and various operation indexes of an engine in real time; and judging whether the engine is in a low-gear transient working condition or not according to all the operation indexes of the engine, if so, searching a transient protection oil mass corresponding to one operation index of all the operation indexes of the engine and an atmospheric pressure value in a preset transient supercharger protection map, and setting the maximum oil injection quantity of the engine according to the transient protection oil mass. In this technical scheme, predetermine transient state booster protection map, when determining that the engine is in low-gear transient state operating mode, through seeking transient state booster protection map, determine the transient state protection oil mass to according to the transient state protection oil mass, set up the maximum fuel injection quantity of engine, thereby ensure under low-gear transient state operating mode that exhaust gas turbocharger can not appear the overspeed damage.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, it is obvious that the drawings in the following description are only embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
FIG. 1 is a flow chart of a method of exhaust turbocharger protection provided herein;
FIG. 2 is a flow chart of yet another method of a method of protecting an exhaust gas turbocharger as provided herein;
FIG. 3 is an exemplary illustration of a method of protecting an exhaust gas turbocharger provided herein;
FIG. 4 is a schematic structural view of an exhaust gas turbocharger protection device provided herein;
fig. 5 is a schematic structural diagram of an electronic device provided in the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Referring to fig. 1, an embodiment of the present application provides a method for protecting an exhaust gas turbocharger, including the following steps:
s101, acquiring an atmospheric pressure value and various operation indexes of the engine in real time.
In this embodiment, the atmospheric pressure value and various operation indexes of the engine are obtained in real time.
It should be noted that the engine mentioned in the embodiments of the present application is an electronically controlled engine, and the electronically controlled engine refers to an engine that is composed of an Electronic Control Unit (ECU), a sensor, and an actuator, and that is configured to perform various control functions by an electronic control system.
Wherein, each index of the engine comprises: engine speed, rate of change of engine speed, and engine fueling quantity.
That is to say, in this embodiment, the atmospheric pressure value, the engine speed, the rate of change of the engine speed, and the engine fuel injection amount are obtained in real time.
S102, judging whether the engine is in a low-gear transient working condition or not according to various running indexes of the engine, if so, executing a step S103, and if not, executing a step S104.
In this embodiment, whether the engine is in the low-gear transient operating mode is judged according to various operation indexes of the engine, that is, whether the engine is in the low-gear transient operating mode is judged, and specifically, whether the engine is in the low-gear transient operating mode is judged according to the engine speed, the engine speed change rate and the engine fuel injection quantity.
Referring to fig. 2, the process of determining whether the engine is in the low gear transient operating condition according to various operating indexes of the engine specifically includes the following steps:
s201, judging whether the engine speed, the engine speed change rate and the engine fuel injection quantity meet respective corresponding preset conditions, if so, executing S202, and if not, executing S203.
In the embodiment, whether the engine is in the low-gear transient working condition or not is determined by judging whether the rotating speed of the engine meets the corresponding preset condition or not, judging whether the change rate of the rotating speed of the engine meets the corresponding preset condition or not, and judging whether the fuel injection quantity of the engine meets the corresponding preset condition or not.
Specifically, whether the rotating speed of the engine meets the corresponding preset condition is judged, and whether the rotating speed of the engine is greater than a first threshold value is judged; judging whether the change rate of the engine speed meets the corresponding preset condition, and judging whether the change rate of the engine speed is greater than a second threshold value; and judging whether the fuel injection quantity of the engine meets the corresponding preset condition, and judging whether the fuel injection quantity of the engine is larger than a third threshold value. It should be noted that the first threshold, the second threshold, and the third threshold are all values set manually, and may be modified according to the engine model.
And S202, determining that the engine is in a low-gear transient working condition.
In this embodiment, if the engine speed meets the corresponding preset condition, the engine speed change rate meets the corresponding preset condition, and the engine fuel injection amount also meets the corresponding preset condition, it is determined that the engine is in the low-gear transient operating condition.
And S203, determining that the engine is not in the low-gear transient working condition.
In this embodiment, if the engine speed, the engine speed change rate, or the engine fuel injection quantity do not satisfy the preset conditions corresponding to the engine speed, the engine speed change rate, or the engine fuel injection quantity, it is determined that the engine is not in the low-gear transient operating condition, that is, any one of the engine speed, the engine speed change rate, and the engine fuel injection quantity does not satisfy the preset conditions corresponding to the engine speed change rate, or the engine fuel injection quantity, and it is determined that the engine is not in the low-gear transient operating condition.
S103, searching for transient protection oil quantity corresponding to one of various operation indexes of the engine and the atmospheric pressure value in a preset transient supercharger protection map.
In this embodiment, if it is determined that the engine is in the low-gear transient operating condition, the preset transient supercharger protection map is searched according to one of the operating indexes of the engine and the atmospheric pressure value, so that the transient protection oil amount corresponding to one of the operating indexes of the engine and the atmospheric pressure value is determined.
Specifically, in a preset transient supercharger protection map, a process of searching for a transient protection oil amount corresponding to one of various operation indexes of an engine and an atmospheric pressure value comprises the following steps:
and searching the transient protection oil quantity corresponding to the engine speed and the atmospheric pressure value in a preset transient supercharger protection map.
That is to say, in the preset transient supercharger protection map mentioned in this embodiment, one of the operation indexes of the engine in the transient protection oil amount corresponding to both one of the operation indexes of the engine and the atmospheric pressure value is searched for as the engine speed, that is, according to the engine speed and the atmospheric pressure value, the corresponding transient protection oil amount can be determined by searching for the transient supercharger protection map.
In this embodiment, a transient supercharger protection map is preset, referring to fig. 3, an abscissa of the transient supercharger protection map is an atmospheric pressure value, an ordinate of the transient supercharger protection map is an engine rotation speed, and an output value of the transient supercharger protection map is a transient protection oil amount, that is, a corresponding transient protection oil amount can be uniquely determined by the atmospheric pressure value and the rotation speed of the transmitter.
S104, searching for the steady-state protection oil quantity corresponding to one of the operating indexes of the engine and the atmospheric pressure value in the preset steady-state supercharger protection map.
In this embodiment, if it is determined that the engine is not in the low-gear transient operating condition, the preset steady-state supercharger protection map is searched according to one of the operating indexes of the engine and the atmospheric pressure value, so as to determine the steady-state protection oil amount corresponding to one of the operating indexes of the engine and the atmospheric pressure value.
Specifically, in a preset steady-state supercharger protection map, the process of searching for the steady-state protection oil amount corresponding to one of the operating indexes of the engine and the atmospheric pressure value comprises the following steps: and searching for the steady-state protection oil quantity corresponding to the engine speed and the atmospheric pressure value in a preset steady-state supercharger protection map.
In this embodiment, a steady-state supercharger protection map is preset, the abscissa of the steady-state supercharger protection map is an atmospheric pressure value, the ordinate of the steady-state supercharger protection map is an engine speed, and the output value of the steady-state supercharger protection map is a steady-state protection oil amount.
It should be noted that the transient booster protection map and the steady booster protection map are different maps.
And S105, setting the maximum oil injection quantity of the engine according to the transient protection oil quantity.
In this embodiment, under the engine is in low-gear transient state operating mode, according to the transient state protection oil mass, set up the maximum fuel injection quantity of engine, that is to say, set up the maximum fuel injection quantity of engine to the transient state protection oil mass.
Namely, under the condition that the engine is in a low-gear transient working condition, the maximum fuel injection quantity of the engine is calibrated according to the transient supercharger protection map.
And S106, setting the maximum oil injection quantity of the engine according to the steady-state protection oil quantity.
In this embodiment, under the engine is not in low-gear transient operating mode, according to the steady state protection oil mass, set up the maximum fuel injection quantity of engine, that is to say, set up the maximum fuel injection quantity of engine as the steady state protection oil mass.
Namely, under the condition that the engine is not in the low-gear transient working condition, the maximum fuel injection quantity of the engine is calibrated according to the steady-state supercharger protection map.
It should be noted that, in the prior art, usually, the maximum fuel injection amount of the engine is calibrated based on a preset steady-state supercharger protection map, and the maximum fuel injection amount of the engine is not overspeed under a high-level steady-state working condition after calibration, but the exhaust gas turbocharger may also have a transient overspeed phenomenon under a low-level transient working condition.
According to the exhaust gas turbocharger protection method provided by the embodiment of the application, when the engine is determined to be in the low-gear transient working condition, the maximum fuel injection quantity of the engine is calibrated according to the transient supercharger protection map, when the engine is determined not to be in the low-gear transient working condition, the maximum fuel injection quantity of the engine is calibrated according to the steady supercharger protection map, and therefore the exhaust gas turbocharger is prevented from being damaged in an overspeed mode under the low-gear transient working condition, and the loss of the engine power is reduced to the maximum degree.
Corresponding to the method shown in fig. 1, the embodiment of the present application further provides an exhaust gas turbocharger protection device, which is used for implementing the method shown in fig. 1, and the schematic structural diagram of the exhaust gas turbocharger protection device is shown in fig. 4, and specifically includes:
the acquiring unit 401 is configured to acquire an atmospheric pressure value and various operation indexes of the engine in real time;
a determining unit 402, configured to determine whether the engine is in a low-gear transient operating condition according to various operation indexes of the engine;
a first searching unit 403, configured to search, in a preset transient supercharger protection map, a transient protection oil amount corresponding to one of operation indexes of the engine and the atmospheric pressure value if the engine is in a low-gear transient operating condition;
the first setting unit 404 is configured to set a maximum fuel injection amount of the engine according to the transient protection fuel amount.
The utility model provides an exhaust gas turbine booster protection device, when confirming that the engine is in low-gear transient state operating mode, according to transient state booster protection map, mark the maximum fuel injection quantity of engine, when confirming that the engine is not in low-gear transient state operating mode, according to steady state booster protection map, mark the maximum fuel injection quantity of engine, thereby ensure under low-gear transient state operating mode, exhaust gas turbine booster can not appear the damage of speeding, and realize the loss of maximum reduction engine power.
In one embodiment of the present application, based on the foregoing scheme, the operation indexes of the engine include an engine speed, an engine speed change rate, and an engine fuel injection amount.
In an embodiment of the present application, based on the foregoing solution, the first searching unit 403 is configured to search for the transient protective oil amount corresponding to one of the operation indexes of the engine and the atmospheric pressure value, and includes the first searching unit 403 specifically configured to:
and searching the transient protection oil quantity corresponding to the engine rotating speed and the atmospheric pressure value in a preset transient supercharger protection map.
In an embodiment of the present application, based on the foregoing solution, the determining unit 402 is configured to determine whether the engine is in the low gear transient operating condition, and includes the determining unit 402 specifically configured to:
judging whether the engine speed, the engine speed change rate and the engine fuel injection quantity all meet respective corresponding preset conditions;
if so, determining that the engine is in a low-gear transient working condition;
and if not, determining that the engine is not in the low-gear transient working condition.
In an embodiment of the present application, based on the foregoing scheme, the method may further include:
the second searching unit is used for searching a steady-state protection oil quantity corresponding to one of various operation indexes of the engine and the atmospheric pressure value in a preset steady-state supercharger protection map if the engine is not in a low-gear transient working condition;
and the second setting unit is used for setting the maximum oil injection quantity of the engine according to the steady-state protection oil quantity.
An embodiment of the present application further provides a storage medium, where the storage medium includes stored instructions, where when the instructions are executed, the apparatus where the storage medium is located is controlled to perform the following operations:
acquiring an atmospheric pressure value and various operation indexes of an engine in real time;
judging whether the engine is in a low-gear transient working condition or not according to various running indexes of the engine;
if the engine is in a low-gear transient working condition, searching a transient protection oil quantity corresponding to one of various operation indexes of the engine and the atmospheric pressure value in a preset transient supercharger protection map;
and setting the maximum fuel injection quantity of the engine according to the transient protection fuel quantity.
The present embodiment further provides an electronic device, whose schematic structural diagram is shown in fig. 5, specifically including a memory 501 and one or more instructions 502, where the one or more instructions 502 are stored in the memory 501, and are configured to be executed by one or more processors 503 to perform the following operations according to the one or more instructions 502:
acquiring an atmospheric pressure value and various operation indexes of an engine in real time;
judging whether the engine is in a low-gear transient working condition or not according to various running indexes of the engine;
if the engine is in a low-gear transient working condition, searching a transient protection oil quantity corresponding to one of various operation indexes of the engine and the atmospheric pressure value in a preset transient supercharger protection map;
and setting the maximum fuel injection quantity of the engine according to the transient protection fuel quantity.
It should be noted that, in the present specification, the embodiments are all described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments may be referred to each other. For the device-like embodiment, since it is basically similar to the method embodiment, the description is simple, and for the relevant points, reference may be made to the partial description of the method embodiment.
Finally, it should also be noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The method and the device for protecting the exhaust gas turbocharger provided by the application are described in detail above, and the principle and the implementation mode of the application are explained by applying specific examples, and the description of the examples is only used for helping to understand the method and the core idea of the application; meanwhile, for a person skilled in the art, according to the idea of the present application, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present application.
Claims (10)
1. A method of protecting an exhaust turbocharger, comprising:
acquiring an atmospheric pressure value and various operation indexes of an engine in real time;
judging whether the engine is in a low-gear transient working condition or not according to various running indexes of the engine;
if the engine is in a low-gear transient working condition, searching a transient protection oil quantity corresponding to one of various operation indexes of the engine and the atmospheric pressure value in a preset transient supercharger protection map;
and setting the maximum fuel injection quantity of the engine according to the transient protection fuel quantity.
2. The method of claim 1, wherein the engine operating metrics include engine speed, rate of change of engine speed, and engine fuel injection.
3. The method of claim 2, wherein the searching for the transient protective oil amount corresponding to each of one of the operating indicators of the engine and the atmospheric pressure value comprises:
and searching the transient protection oil quantity corresponding to the engine rotating speed and the atmospheric pressure value in a preset transient supercharger protection map.
4. The method of claim 2, wherein said determining whether the engine is in a low gear transient condition comprises:
judging whether the engine speed, the engine speed change rate and the engine fuel injection quantity all meet respective corresponding preset conditions;
if so, determining that the engine is in a low-gear transient working condition;
and if not, determining that the engine is not in the low-gear transient working condition.
5. The method of claim 4, further comprising:
if the engine is not in the low-gear transient working condition, searching a steady-state protection oil quantity corresponding to one of the running indexes of the engine and the atmospheric pressure value in a preset steady-state supercharger protection map;
and setting the maximum fuel injection quantity of the engine according to the steady-state protection fuel quantity.
6. An exhaust-gas turbocharger protection device, characterized by comprising:
the acquisition unit is used for acquiring the atmospheric pressure value and various operation indexes of the engine in real time;
the judging unit is used for judging whether the engine is in a low-gear transient working condition or not according to various running indexes of the engine;
the first searching unit is used for searching the transient protection oil quantity corresponding to one of various operation indexes of the engine and the atmospheric pressure value in a preset transient supercharger protection map if the engine is in a low-gear transient working condition;
and the first setting unit is used for setting the maximum oil injection quantity of the engine according to the transient protection oil quantity.
7. The apparatus of claim 6, wherein the engine operating indicators include engine speed, rate of change of engine speed, and engine fuel injection.
8. The apparatus according to claim 7, wherein the first search unit is configured to search for the transient protection oil amount corresponding to one of the operating indexes of the engine and the atmospheric pressure value, and includes the first search unit specifically configured to:
and searching the transient protection oil quantity corresponding to the engine rotating speed and the atmospheric pressure value in a preset transient supercharger protection map.
9. The method of claim 7, wherein the determining unit is configured to determine whether the engine is in a low gear transient state, and comprises the determining unit specifically configured to:
judging whether the engine speed, the engine speed change rate and the engine fuel injection quantity all meet respective corresponding preset conditions;
if so, determining that the engine is in a low-gear transient working condition;
and if not, determining that the engine is not in the low-gear transient working condition.
10. The apparatus of claim 9, further comprising:
the second searching unit is used for searching a steady-state protection oil quantity corresponding to one of various operation indexes of the engine and the atmospheric pressure value in a preset steady-state supercharger protection map if the engine is not in a low-gear transient working condition;
and the second setting unit is used for setting the maximum oil injection quantity of the engine according to the steady-state protection oil quantity.
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| CN202110494888.9A CN113153546B (en) | 2021-05-07 | 2021-05-07 | Exhaust gas turbocharger protection method and device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110494888.9A CN113153546B (en) | 2021-05-07 | 2021-05-07 | Exhaust gas turbocharger protection method and device |
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| US4620420A (en) * | 1983-12-12 | 1986-11-04 | Robert Bosch Gmbh | Device for reducing drive slip of motor vehicles provided with turbo charged engines |
| JPH01253528A (en) * | 1987-12-29 | 1989-10-09 | Honda Motor Co Ltd | Supercharging pressure control method for internal combustion engine |
| JP2008240682A (en) * | 2007-03-28 | 2008-10-09 | Mazda Motor Corp | Control device for diesel engine |
| CN112555042A (en) * | 2020-12-08 | 2021-03-26 | 潍柴动力股份有限公司 | Correction triggering method for protective oil quantity, method for acquiring protective oil quantity and related device |
-
2021
- 2021-05-07 CN CN202110494888.9A patent/CN113153546B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4620420A (en) * | 1983-12-12 | 1986-11-04 | Robert Bosch Gmbh | Device for reducing drive slip of motor vehicles provided with turbo charged engines |
| JPH01253528A (en) * | 1987-12-29 | 1989-10-09 | Honda Motor Co Ltd | Supercharging pressure control method for internal combustion engine |
| JP2008240682A (en) * | 2007-03-28 | 2008-10-09 | Mazda Motor Corp | Control device for diesel engine |
| CN112555042A (en) * | 2020-12-08 | 2021-03-26 | 潍柴动力股份有限公司 | Correction triggering method for protective oil quantity, method for acquiring protective oil quantity and related device |
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| CN113153546B (en) | 2023-04-18 |
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