CN112211718B - Method, device and system for protecting supercharger - Google Patents
Method, device and system for protecting supercharger Download PDFInfo
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- CN112211718B CN112211718B CN202010918083.8A CN202010918083A CN112211718B CN 112211718 B CN112211718 B CN 112211718B CN 202010918083 A CN202010918083 A CN 202010918083A CN 112211718 B CN112211718 B CN 112211718B
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- Prior art keywords
- supercharger
- oil
- valve
- protecting
- oil pump
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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
- F02B39/00—Component parts, details, or accessories relating to, driven charging or scavenging pumps, not provided for in groups F02B33/00 - F02B37/00
- F02B39/16—Other safety measures for, or other control of, pumps
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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
- F02B39/00—Component parts, details, or accessories relating to, driven charging or scavenging pumps, not provided for in groups F02B33/00 - F02B37/00
- F02B39/005—Cooling of pump drives
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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
- F02B39/00—Component parts, details, or accessories relating to, driven charging or scavenging pumps, not provided for in groups F02B33/00 - F02B37/00
- F02B39/02—Drives of pumps; Varying pump drive gear ratio
- F02B39/08—Non-mechanical drives, e.g. fluid drives having variable gear ratio
- F02B39/085—Non-mechanical drives, e.g. fluid drives having variable gear ratio the fluid drive using expansion of fluids other than exhaust gases, e.g. a Rankine cycle
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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
- F02B39/00—Component parts, details, or accessories relating to, driven charging or scavenging pumps, not provided for in groups F02B33/00 - F02B37/00
- F02B39/14—Lubrication of pumps; Safety measures therefor
Abstract
The invention belongs to the technical field of vehicle faults, and particularly relates to a method, a device and a system for protecting a supercharger. The method for protecting the supercharger comprises the following steps: acquiring the current running state of the engine; and controlling an on-off valve and an oil pump to be opened according to the condition that the current running state of the engine is a stop state, controlling the on-off valve to be opened for introducing compressed air to drive an impeller of the supercharger to rotate, and controlling the oil pump to be opened for introducing lubricating oil to cool a rotating shaft of the supercharger. According to the method for protecting the supercharger, the on-off valve and the oil pump are controlled to be opened, compressed air is introduced by opening the on-off valve to drive the impeller of the supercharger to rotate, the oil pump is controlled to be opened to introduce lubricating oil to cool the rotating shaft of the supercharger, the rotating shaft can be driven to rotate by the rotation of the impeller, the purpose of cooling the supercharger can be effectively achieved, and the supercharger is protected.
Description
Technical Field
The invention belongs to the technical field of vehicle faults, and particularly relates to a method, a device and a system for protecting a supercharger.
Background
In the case of a supercharged engine, after the engine stops operating, the supercharger impeller stops operating because of no exhaust gas drive. The heat load of the supercharger is large, and the engine oil at the supercharger is easy to carbonize, coke and the like, so that the failure rate of the supercharger is increased.
When the engine stops running, the rear lubricating oil pump provides lubricating oil, so that the supercharger can continue to cool after the engine stops, but because the supercharger does not run, the cooling effect is limited.
The cooling effect of the existing supercharged engine is limited after the engine stops running.
Disclosure of Invention
The invention aims to at least solve the problem that the cooling effect of the existing supercharged engine is limited after the engine stops running. The purpose is realized by the following technical scheme:
a first aspect of the invention proposes a method of protecting a supercharger, wherein the method comprises the steps of:
acquiring the current running state of the engine;
and controlling an on-off valve and an oil pump to be opened according to the condition that the current running state of the engine is a stop state, controlling the on-off valve to be opened for introducing compressed air to drive an impeller of the supercharger to rotate, and controlling the oil pump to be opened for introducing lubricating oil to cool a rotating shaft of the supercharger.
According to the method for protecting the supercharger, the on-off valve and the oil pump are controlled to be opened according to the condition that the current running state of the engine is a stop state, compressed air is introduced by opening the on-off valve to drive the impeller of the supercharger to rotate, the oil pump is controlled to be opened to cool the rotating shaft of the supercharger by introducing lubricating oil, the rotating shaft can be driven to rotate by the rotation of the impeller, the purpose of cooling the supercharger can be effectively achieved, and the supercharger is protected.
In addition, the method for protecting the supercharger according to the invention can also have the following additional technical characteristics:
in some embodiments of the invention, the controlling the on-off valve and the oil pump opening comprises:
acquiring a current exhaust temperature value of the engine;
and obtaining a first opening time value of the on-off valve and a second opening time value of the oil pump according to the current exhaust temperature value of the engine.
In some embodiments of the present invention, the obtaining the first opening time value of the on-off valve and the second opening time value of the oil pump according to the current exhaust temperature value of the engine includes:
the first on-time value is not greater than the second on-time value.
In another aspect of the present invention, an apparatus for protecting a supercharger is provided, where the apparatus is used to perform the method for protecting a supercharger, and the apparatus includes: the device comprises an acquisition unit, an on-off valve control unit and an oil pump control unit, wherein:
the acquisition unit is used for acquiring the current running state of the engine;
the on-off valve control and the oil pump control unit are used for controlling the on-off valve and the oil pump to be opened according to the fact that the current running state of the engine is a stop state.
The invention also provides a system for protecting the supercharger, which comprises a memory and the supercharger protecting device, wherein the memory stores instructions of the supercharger protecting method;
the system for protecting a supercharger further comprises: the turbocharger is provided with a vortex end and a pressure end, impellers are respectively arranged in the vortex end and the pressure end, and a rotating shaft is arranged between the two impellers;
the air pipe is connected with the vortex end or the pressure end, compressed air is introduced into the air pipe, and an on-off valve is arranged on the air pipe;
the oil pipe is connected with the rotating shaft, lubricating oil is introduced into the oil pipe, and an oil pump is arranged on the oil pipe.
In some embodiments of the invention, the system for protecting a supercharger further comprises an oil pan;
the oil pipe includes: an oil inlet of the oil inlet pipe is connected with the oil pan, an oil outlet of the oil inlet pipe is connected with the rotating shaft, and the oil pump is arranged on the oil inlet pipe;
and the oil inlet of the oil outlet pipe is connected with the rotating shaft, and the oil outlet of the oil outlet pipe is connected with the oil pan.
In some embodiments of the invention, the system for protecting a supercharger further comprises a compressed gas tank in communication with the gas pipe.
In some embodiments of the present invention, the air pipe is connected to the vortex end, and the air pipe is wound around a housing of the supercharger.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like parts are designated by like reference numerals throughout the drawings. In the drawings:
FIG. 1 schematically illustrates a flow chart of a method of protecting a supercharger according to an embodiment of the present invention;
fig. 2 schematically shows a schematic structural diagram of a system for protecting a supercharger according to an embodiment of the present invention.
1: a compressed gas tank; 2: an on-off valve; 3: a controller; 4: a supercharger; 5: an oil pump; 6: an oil pan;
21: an air tube; 41: a rotating shaft; 42: a vortex end; 43: pressing the end; 51: an oil inlet pipe; 52: an oil outlet pipe.
DETAILED DESCRIPTION OF EMBODIMENT (S) OF INVENTION
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
It is to be understood that the terminology used herein is for the purpose of describing particular example embodiments only, and is not intended to be limiting. As used herein, the singular forms "a", "an" and "the" may be intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms "comprises," "comprising," "including," and "having" are inclusive and therefore specify the presence of stated features, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and/or groups thereof. The method steps, processes, and operations described herein are not to be construed as necessarily requiring their performance in the particular order described or illustrated, unless specifically identified as an order of performance. It should also be understood that additional or alternative steps may be used.
Although the terms first, second, third, etc. may be used herein to describe various elements, components, regions, layers and/or sections, these elements, components, regions, layers and/or sections should not be limited by these terms. These terms may be only used to distinguish one element, component, region, layer or section from another region, layer or section. Terms such as "first," "second," and other numerical terms when used herein do not imply a sequence or order unless clearly indicated by the context. Thus, a first element, component, region, layer or section discussed below could be termed a second element, component, region, layer or section without departing from the teachings of the example embodiments.
For convenience of description, spatially relative terms, such as "inner", "outer", "lower", "below", "upper", "above", and the like, may be used herein to describe one element or feature's relationship to another element or feature as illustrated in the figures. Such spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" or "beneath" other elements or features would then be oriented "above" or "over" the other elements or features. Thus, the example term "below … …" can include both an orientation of above and below. The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
As shown in fig. 1, the method for protecting a supercharger in the present embodiment includes the following steps:
s1, acquiring the current running state of the engine;
and S2, controlling the on-off valve and the oil pump to be opened according to the condition that the current running state of the engine is a stop state, controlling the on-off valve to be opened for introducing compressed air to drive an impeller of the supercharger to rotate, and controlling the oil pump to be opened for introducing lubricating oil to cool a rotating shaft of the supercharger.
Specifically, the on-off of the compressed air is realized by controlling the on-off valve to be opened or closed after the controller, namely the ECU acquires the running state of the engine, and when the engine is in a stop state, the on-off valve is controlled to be opened.
According to the fact that the current running state of the engine is a stop state, the on-off valve and the oil pump are controlled to be opened, compressed air is introduced by opening the on-off valve to drive an impeller of the supercharger to rotate, the oil pump is controlled to be opened to introduce lubricating oil to cool a rotating shaft of the supercharger, the rotating shaft can be driven to rotate by the rotation of the impeller, and the purpose of cooling the supercharger can be effectively achieved.
In some embodiments of the invention, the controlling the on-off valve and the oil pump opening comprises:
acquiring a current exhaust temperature value of the engine;
and obtaining a first opening time value of the on-off valve and a second opening time value of the oil pump according to the current exhaust temperature value of the engine.
The opening time of the compressed air is determined by the running state of the engine and is opened when the engine stops running; and at the closing moment, the exhaust temperature of the engine when the engine stops running is obtained by checking an experimental table of the exhaust temperature and the cooling time, and the higher the exhaust temperature of the engine is, the longer the cooling time is.
Similarly, the working time of the oil pump is measured by the exhaust temperature when the engine stops running, and the experimental table of the exhaust temperature and the cooling time shows that the higher the exhaust temperature is, the longer the cooling time is. And obtaining a first opening time value of the on-off valve and a second opening time value of the oil pump by checking an experimental table of temperature and cooling time.
In some embodiments of the present invention, the obtaining the first opening time value of the on-off valve and the second opening time value of the oil pump according to the current exhaust temperature value of the engine includes:
the first on-time value is not greater than the second on-time value.
Specifically, the opening time values of the oil pump and the on-off valve can adopt the same set of data to work simultaneously and stop simultaneously, namely the first opening time value is equal to the second opening time value; the working time of the oil pump is longer than that of the on-off valve, namely the second opening time value is longer than the first opening time value, so that the situation that the on-off valve is opened, compressed air is introduced or the supercharger works under the condition that no lubricating oil flows because of inertia when the oil pump does not work is avoided.
In another aspect of the present invention, an apparatus for protecting a supercharger is provided, where the apparatus is used to perform the method for protecting a supercharger, and the apparatus includes: the device comprises an acquisition unit, an on-off valve control unit and an oil pump control unit, wherein:
the acquisition unit is used for acquiring the current running state of the engine;
the on-off valve control and the oil pump control unit are used for controlling the on-off valve and the oil pump to be opened according to the fact that the current running state of the engine is a stop state.
As shown in fig. 2, another aspect of the present invention further provides a system for protecting a supercharger 4, where the system for protecting a supercharger 4 includes a memory and the device for protecting a supercharger 4, and the memory stores therein instructions of the method for protecting a supercharger 4;
the system for protecting the supercharger 4 further comprises: the supercharger 4 is provided with a vortex end 42 and a pressure end 43, impellers are respectively arranged in the vortex end 42 and the pressure end 43, and a rotating shaft 41 is arranged between the two impellers;
the air pipe 21 is connected with the vortex end 42 or the pressure end 43, compressed air is introduced into the air pipe 21, and the air pipe 21 is provided with an on-off valve 2;
and the oil pipe is connected with the rotating shaft 41, lubricating oil is introduced into the oil pipe, and an oil pump 5 is arranged on the oil pipe.
The controller 3 opens the on-off valve 2 according to the stop state of the engine, so that compressed air can be introduced into the vortex end 42 or the pressure end 43 to drive the impeller in the vortex end 42 or the pressure end 43 to rotate, and the rotating shaft 41 is driven to rotate. The controller 3 opens the oil pump 5 according to the stop state of the engine to enable lubricating oil to be introduced to the rotating shaft 41, and the lubricating oil flows to effectively cool the rotating shaft 41.
It should be noted that the air pipe 21 is connected to the pressure end 43, that is, the pressure end 43 is lower in temperature and has less thermal shock to the components such as the impeller compared to the case where the compressed air is introduced into the pressure end 43 and the compressed air is introduced into the vortex end 42.
In some embodiments of the present invention, the system for protecting the supercharger 4 further comprises an oil pan 6;
the oil pipe includes: an oil inlet of the oil inlet pipe 51 is connected with the oil pan 6, an oil outlet of the oil inlet pipe 51 is connected with the rotating shaft 41, and the oil pump 5 is arranged on the oil inlet pipe 51;
an oil inlet of the oil outlet pipe 52 is connected with the rotating shaft 41, and an oil outlet of the oil outlet pipe 52 is connected with the oil pan 6.
The oil pan 6 is arranged, so that lubricating oil can be pumped into the oil inlet pipe 51 conveniently, and lubricating oil which lubricates the rotating shaft 41 can be recycled to the oil pan 6 conveniently.
In some embodiments of the invention, the system for protecting the supercharger 4 further comprises a compressed gas tank 1, the compressed gas tank 1 being in communication with the gas pipe 21. Compressed air is stored in the compressed air tank 1 and can be supplied to the air pipe 21.
In some embodiments of the present invention, the air pipe 21 is connected to the vortex end 42, and the air pipe 21 is wound around the housing of the supercharger 4.
Compressed air is introduced into the vortex end 42, and after the compressed air is blown out, the compressed air absorbs heat due to pressure reduction, so that the cold and heat shock of the impeller is large, and the service life of parts such as the impeller of the vortex end 42 is influenced. The air pipe 21 which is introduced with the compressed air is wound for one circle or a plurality of circles along the volute and/or the component with higher temperature, the heat of the volute and/or the component with higher temperature is utilized to heat the compressed air in the air pipe 21, the volute or the component with higher temperature can be cooled, the compressed air can be heated, and the cold and hot impact of the compressed air on the supercharger 4 is reduced.
In the method for protecting the supercharger, the on-off of the compressed air is realized by controlling the on-off valve to be opened or closed by the controller; the opening time of the on-off valve is determined by the running state of the engine, and the on-off valve is opened when the engine is stopped; and obtaining a first opening time value of the on-off valve by looking up a table according to the exhaust temperature when the engine stops running. Meanwhile, the motor oil pump is used, and lubrication and cooling can be continuously provided for the supercharger after the engine is stopped; the working time of the oil pump is obtained by looking up a table according to the exhaust temperature when the engine stops running. The oil pump and the on-off valve can work simultaneously by adopting the same set of data and stop simultaneously; the working time of the rear oil pump is longer than that of the on-off valve, so that the on-off valve is prevented from working due to the fact that the oil pump does not work, or the supercharger works under the condition that no lubricating oil flows due to inertia. Compressed air is introduced, after the engine is stopped, the compressed air is used for driving the impeller of the supercharger to continuously operate to drive the rotating shaft to rotate, the oil pump is used for continuously supplying oil to the supercharger, cooling and lubricating of the supercharger are guaranteed, and the supercharger is protected.
In summary, in the method for protecting the supercharger, according to the present invention, the on-off valve and the oil pump are controlled to be opened according to the current operating state of the engine being the shutdown state, the on-off valve is opened to introduce compressed air to drive the impeller of the supercharger to rotate, the oil pump is controlled to be opened to introduce lubricating oil to cool the rotating shaft of the supercharger, the impeller can drive the rotating shaft to rotate, the purpose of cooling the supercharger can be effectively achieved, and the supercharger is protected.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (5)
1. A method for protecting a supercharger is characterized in that a pressure end of the supercharger is communicated with a compressed air tank through an air pipe, and an on-off valve is arranged on the air pipe, and the method comprises the following steps:
acquiring the current running state of the engine;
controlling an on-off valve and an oil pump to be opened according to the condition that the current running state of the engine is a stop state, controlling the on-off valve to be opened for introducing compressed air to drive an impeller of a supercharger to rotate, and controlling the oil pump to be opened for introducing lubricating oil to cool a rotating shaft of the supercharger;
the controlling the on-off valve and the oil pump to open comprises the following steps:
acquiring a current exhaust temperature value of the engine;
obtaining a first opening time value of an on-off valve and a second opening time value of an oil pump according to a current exhaust temperature value of the engine;
the obtaining of the first opening time value of the on-off valve and the second opening time value of the oil pump according to the current exhaust temperature value of the engine comprises:
the first on-time value is not greater than the second on-time value.
2. An apparatus for protecting a supercharger for performing the method of protecting a supercharger of claim 1, comprising: the device comprises an acquisition unit, an on-off valve control unit and an oil pump control unit, wherein:
the acquisition unit is used for acquiring the current running state of the engine;
the on-off valve control and the oil pump control unit are used for controlling the on-off valve and the oil pump to be opened according to the fact that the current running state of the engine is a stop state.
3. A system for protecting a supercharger, the system comprising a memory and the device for protecting a supercharger of claim 2, the memory storing instructions of the method for protecting a supercharger of claim 1;
the system for protecting a supercharger further comprises: the turbocharger is provided with a vortex end and a pressure end, impellers are respectively arranged in the vortex end and the pressure end, and a rotating shaft is arranged between the two impellers;
the air pipe is connected with the pressure end, compressed air is introduced into the air pipe, and an on-off valve is arranged on the air pipe;
the oil pipe is connected with the rotating shaft, lubricating oil is introduced into the oil pipe, and an oil pump is arranged on the oil pipe.
4. The system for protecting a supercharger of claim 3, further comprising an oil sump;
the oil pipe includes: an oil inlet of the oil inlet pipe is connected with the oil pan, an oil outlet of the oil inlet pipe is connected with the rotating shaft, and the oil pump is arranged on the oil inlet pipe;
and the oil inlet of the oil outlet pipe is connected with the rotating shaft, and the oil outlet of the oil outlet pipe is connected with the oil pan.
5. The system of protecting a supercharger of claim 3, further comprising a compressed gas tank in communication with the gas pipe.
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CN202010918083.8A CN112211718B (en) | 2020-09-03 | 2020-09-03 | Method, device and system for protecting supercharger |
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CN202010918083.8A CN112211718B (en) | 2020-09-03 | 2020-09-03 | Method, device and system for protecting supercharger |
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CN112211718B true CN112211718B (en) | 2022-04-26 |
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Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4884406A (en) * | 1987-08-17 | 1989-12-05 | Isuzu Motors Limited | Turbocharger |
JP2002276383A (en) * | 2001-03-15 | 2002-09-25 | Nissan Diesel Motor Co Ltd | Lubricatnig device for engine with turbo supercharger |
CN202348423U (en) * | 2011-12-13 | 2012-07-25 | 东风汽车有限公司 | Cooling and lubricating device of supercharger |
CN202578808U (en) * | 2012-02-28 | 2012-12-05 | 长城汽车股份有限公司 | Pressurized air cooling system and vehicle |
CN204899994U (en) * | 2015-09-08 | 2015-12-23 | 安徽机电职业技术学院 | Auxiliary cooling device is shut down to turbo charger heat |
CN107975396A (en) * | 2017-11-21 | 2018-05-01 | 潍柴动力股份有限公司 | A kind of engine lubrication assistant control method and device |
-
2020
- 2020-09-03 CN CN202010918083.8A patent/CN112211718B/en active Active
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4884406A (en) * | 1987-08-17 | 1989-12-05 | Isuzu Motors Limited | Turbocharger |
JP2002276383A (en) * | 2001-03-15 | 2002-09-25 | Nissan Diesel Motor Co Ltd | Lubricatnig device for engine with turbo supercharger |
CN202348423U (en) * | 2011-12-13 | 2012-07-25 | 东风汽车有限公司 | Cooling and lubricating device of supercharger |
CN202578808U (en) * | 2012-02-28 | 2012-12-05 | 长城汽车股份有限公司 | Pressurized air cooling system and vehicle |
CN204899994U (en) * | 2015-09-08 | 2015-12-23 | 安徽机电职业技术学院 | Auxiliary cooling device is shut down to turbo charger heat |
CN107975396A (en) * | 2017-11-21 | 2018-05-01 | 潍柴动力股份有限公司 | A kind of engine lubrication assistant control method and device |
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