CN114165310A - Engine control method, device, system and storage medium - Google Patents
Engine control method, device, system and storage medium Download PDFInfo
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- CN114165310A CN114165310A CN202111541964.3A CN202111541964A CN114165310A CN 114165310 A CN114165310 A CN 114165310A CN 202111541964 A CN202111541964 A CN 202111541964A CN 114165310 A CN114165310 A CN 114165310A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
- F01M1/00—Pressure lubrication
- F01M1/16—Controlling lubricant pressure or quantity
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
- F01M1/00—Pressure lubrication
- F01M1/02—Pressure lubrication using lubricating pumps
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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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- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Supercharger (AREA)
- Lubrication Of Internal Combustion Engines (AREA)
Abstract
The application provides a control method, equipment, system and storage medium of engine, when lubricating oil is carried to the bearing body to lubricating oil way, obtain turbo charger outlet pressure, pressure on the seal structure in the lubricating oil way and the bearing body, and according to turbo charger outlet pressure, pressure on the seal structure in lubricating oil way and the bearing body and turbo charger protection condition, generate valve opening adjustment instruction and adjust flow control valve's opening size, thereby guarantee that the oil pressure that the bearing body obtained in the oil supply process is less than the oil pressure of leaking all the time, thereby prevent lubricating oil from leaking to turbo charger from the seal structure of the bearing body, in order to cause the damage to the engine.
Description
Technical Field
The present disclosure relates to engine technologies, and in particular, to a method, an apparatus, a system, and a storage medium for controlling an engine.
Background
During the construction and use of the engine, lubricating oil needs to be transmitted in the built-in oil passage of the engine to keep the interior of the engine clean and maintain the high-speed rotation of the built-in bearing body of the engine to ensure that the engine provides energy.
The oil pump is used for flushing the engine, so that the interior of the engine can be kept clean, and the damage caused by the fact that lubricating oil with too high oil pressure contacts a turbocharger and a turbine which are connected with a bearing body through the sealing structure of the bearing body is prevented by cutting off a path entering the bearing body in the conventional flushing process in a mode of manually disassembling an oil inlet pipe joint of the supercharger. In the bearing body use, the manual installation booster advances oil pipe joint of rethread and switches on the lubricated of above-mentioned route that cuts off in order to realize the bearing body, however, in the bearing body use, still there is the too big bearing body oil leak phenomenon that leads to of oil pressure.
Therefore, how to reduce the oil leakage rate of the bearing body in the oil supply process becomes an urgent problem to be solved.
Disclosure of Invention
The application provides a control method, equipment, a system and a storage medium of an engine, which are used for solving the technical problem of reducing the oil leakage rate of a bearing body in the oil supply process.
In a first aspect, the present application provides a control method of an engine, the method being applied to a control apparatus, the method comprising:
when the lubricating oil path conveys lubricating oil to the bearing body, acquiring the outlet pressure of the turbocharger, the pressure of the lubricating oil path and the pressure on a sealing structure in the bearing body;
generating a valve opening adjusting instruction according to the outlet pressure of the turbocharger, the pressure of a lubricating oil path, the pressure of a sealing structure in a bearing body and the protection condition of the turbocharger;
wherein the valve opening adjustment command is used to adjust the opening size of the flow adjustment valve.
In the technical scheme, the flow regulating valve is arranged on the lubricating oil path for supplying oil to the bearing body to regulate the oil pressure conveyed into the bearing body, and other pressure related to the bearing body and the protection condition of the turbocharger are combined, so that the oil pressure in the bearing body can be kept in a safe state under various conditions of the use of an engine, the oil leakage phenomenon of the bearing body is not easy to generate, and the oil leakage rate of the bearing body is reduced.
Optionally, the generating a valve opening adjustment instruction according to the turbocharger outlet pressure, the pressure of the lubricating oil path, the pressure of the sealing structure in the bearing body, and the turbocharger protection condition specifically includes:
and when the sum of the outlet pressure of the turbocharger and the pressure on the sealing structure in the bearing body is smaller than the pressure of the lubricating oil path and a preset pressure safety threshold, generating a valve opening adjusting instruction.
Optionally, the method further comprises:
when the sum of the outlet pressure of the turbocharger and the pressure on the sealing structure in the bearing body is greater than or equal to the pressure of a lubricating oil path and a preset pressure safety threshold, generating a valve opening degree maintaining instruction;
the valve opening degree maintaining instruction is used for maintaining the opening size of the flow regulating valve.
Optionally, before acquiring the turbocharger outlet pressure, the lubricating oil passage pressure, and the pressure on the sealing structure in the bearing body when the lubricating oil passage is delivering lubricating oil to the bearing body, the method further comprises:
acquiring an instruction to be started of an engine; the engine to-be-started instruction is used for controlling the engine to run after a preset time length;
generating a valve opening instruction according to an engine to-be-started instruction, wherein the valve opening instruction is used for controlling the opening of the flow regulating valve to open a preset opening;
and after the flow regulating valve executes a valve opening completion instruction, generating a pre-lubricating oil pump opening instruction, wherein the pre-lubricating oil pump opening instruction is used for controlling the pre-lubricating oil pump to supply oil to the lubricating oil way.
Optionally, after the flow regulating valve executes the valve opening completion command and the prelubricated oil pump opening command is generated, the method further comprises:
controlling the engine to be started after a preset time length according to an engine starting instruction;
and generating a pre-lubricating oil pump closing instruction and a main lubricating oil pump opening instruction so as to control the main lubricating oil pump to supply oil to all oil passages of the engine.
Optionally, before acquiring the turbocharger outlet pressure, the lubricating oil passage pressure and the pressure on the sealing structure in the bearing body when the lubricating oil passage is delivering lubricating oil to the bearing body, the method further comprises:
generating an engine torque limit instruction and a valve opening adjusting instruction; the engine torque limit instruction is used for reducing the running power of the engine, and the valve opening adjustment instruction is used for reducing the opening size of the flow regulating valve;
correspondingly, when lubricating oil way carries lubricating oil to the bearing body, acquire turbo charger outlet pressure, lubricating oil way pressure and the pressure on the internal seal structure of bearing, specifically include:
when the lubricating oil path conveys lubricating oil to the bearing body, the outlet pressure of the turbocharger, the pressure of the lubricating oil path and the pressure of the sealing structure in the bearing body are obtained after the running power of the engine is reduced and the opening size is reduced by the flow regulating valve.
Optionally, before acquiring the turbocharger outlet pressure, the lubrication line pressure, and the pressure on the sealing structure within the bearing body when the lubrication line is delivering lubrication to the bearing body, the method further comprises:
generating a valve closing instruction, wherein the valve closing instruction is used for closing the flow regulating valve;
and generating a flushing instruction, wherein the flushing instruction is used for controlling the main lubricating oil pump to supply oil to all oil paths of the engine so as to remove impurities in the oil paths.
In the technical scheme, the control equipment respectively controls the opening of the flow regulating valve and the switching of the oil supply pump at four stages of the engine so as to realize flushing, bearing body pre-lubrication, lubricating oil transmission in the running process of the engine and oil pressure regulation when the engine is abnormal under the condition of no manual participation, so that the oil pressure borne by the bearing body meets the protection condition of the turbocharger as far as possible, the oil leakage rate of the bearing body is greatly reduced, and the use efficiency of the engine is improved.
In a second aspect, the present application provides a control apparatus comprising: a processor and a memory communicatively coupled to the processor;
the memory stores computer-executable instructions;
the processor executes the computer-executable instructions stored in the memory to implement the control method of the engine relating to the first aspect.
In a third aspect, the present application provides an engine system including the control apparatus relating to the second aspect, an engine, a main lubrication oil pump, and a pre-lubrication oil pump.
In a fourth aspect, the present application provides a computer-readable storage medium having stored therein computer instructions, which when executed by a processor, are used for implementing the control method of the engine according to the first aspect.
The application provides a control method, equipment, system and storage medium of engine, when lubricating oil is carried to the bearing body to lubricating oil way, obtain turbo charger outlet pressure, pressure on the seal structure in the lubricating oil way and the bearing body, and according to turbo charger outlet pressure, pressure on the seal structure in lubricating oil way and the bearing body and turbo charger protection condition, generate valve opening adjustment instruction and adjust flow control valve's opening size, thereby guarantee that the oil pressure that the bearing body obtained in the oil supply process is less than the oil pressure of leaking all the time, thereby prevent lubricating oil from leaking to turbo charger from the seal structure of the bearing body, in order to cause the damage to the engine.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and together with the description, serve to explain the principles of the application.
FIG. 1 is a block diagram of an engine control system according to an embodiment of the present disclosure;
FIG. 2 is a schematic flow chart of a method of controlling an engine provided in accordance with an embodiment of the present application;
FIG. 3 is a schematic flow chart diagram of a method of controlling an engine provided in accordance with another embodiment of the present application;
fig. 4 is a schematic structural diagram of an engine control device according to another embodiment of the present application;
FIG. 5 is a schematic structural diagram of an engine control apparatus according to an embodiment of the present application;
fig. 6 is a schematic structural diagram of an engine control system according to an embodiment of the present application.
With the above figures, there are shown specific embodiments of the present application, which will be described in more detail below. These drawings and written description are not intended to limit the scope of the inventive concepts in any manner, but rather to illustrate the inventive concepts to those skilled in the art by reference to specific embodiments.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present application, as detailed in the appended claims.
During the construction and use of the engine, lubricating oil needs to be transmitted in the built-in oil passage of the engine to keep the interior of the engine clean and maintain the high-speed rotation of the built-in bearing body of the engine to ensure that the engine provides energy.
The oil pump is used for flushing the engine, so that the interior of the engine can be kept clean, and the damage caused by the fact that lubricating oil with too high oil pressure contacts a turbocharger and a turbine which are connected with a bearing body through the sealing structure of the bearing body is prevented by cutting off a path entering the bearing body in the conventional flushing process in a mode of manually disassembling an oil inlet pipe joint of the supercharger. In the bearing body use, the manual installation booster advances oil pipe joint of rethread and switches on the lubricated of above-mentioned route that cuts off in order to realize the bearing body, however, in the bearing body use, still there is the too big bearing body oil leak phenomenon that leads to of oil pressure.
Therefore, how to reduce the oil leakage rate of the bearing body in the oil supply process becomes an urgent problem to be solved.
In view of the above technical problems, embodiments of the present application provide a method, an apparatus, a system and a storage medium for controlling an engine, which aim to solve the problem of reducing an oil leakage rate of a bearing body during an oil supply process. The technical idea of the application is as follows: the controllable flow regulating valve is added in an oil inlet path of the bearing body to cut off the oil inlet path in the engine flushing process, and the opening of the flow regulating valve is adjusted according to the oil pressure associated with the bearing body and the protection condition of the turbocharger in the use process of the engine to adjust oil pressure data entering the bearing body so as to prevent oil leakage of the bearing body due to overhigh oil pressure.
Fig. 1 is a block diagram of an engine control system provided in the present application, and as shown in fig. 1, includes a controlled device 10 and a control device 20. Wherein, controlled equipment 10 includes: a main lubricating oil pump 101, a pipe joint 102, a flow regulating valve 103, a pre-lubricating oil pump 104 and a turbine engine 105, wherein the turbine engine 105 comprises a turbocharger 106, a bearing body 107 and a turbine 108. The turbocharger 106, the bearing body 107, and the turbine 108 are coaxially connected. The turbocharger 106 includes an inlet and an outlet for delivering gas to rotate a bearing body 107 coaxially connected to the turbocharger 106, and a turbine 108 coaxially connected to the bearing body 107 rotates in response to rotation to power equipment to which the turbine engine 105 is mounted.
During use of a turbine engine, it is necessary to use lubricating oil in oil passages within the engine to achieve lubrication, auxiliary cooling, rust prevention, cleaning, sealing, and cushioning effects. The lubrication oil may be provided in different states by the main lubrication oil pump 101 and the pre-lubrication oil pump 104. When the two oil pumps deliver lubricating oil to the bearing body 107 in the turbine engine 105, the lubricating oil is sequentially delivered to the flow rate regulating valve 103 until entering the bearing body 107.
When the turbine engine 105 needs to perform a flushing operation, the control apparatus 20 generates a valve closing command to close the flow rate adjustment valve 103 to block the oil passage that transmits the lubricating oil to the bearing body 107. The control apparatus 20 controls the main lubrication oil pump 101 to deliver lubrication oil to other oil passages in the turbine engine 105 at a preset oil pressure to remove impurities in the oil passages.
When the turbine engine 105 needs to work, the bearing body 107 needs to be pre-lubricated in advance, wherein two ends of the bearing body 107 are respectively provided with a sealing structure to prevent lubricating oil entering the bearing body 107 from entering the turbocharger 106 and the turbine 108 through the two ends respectively to damage the two mechanical structures. If the main lubricant pump 101 is in an open state, the control device 20 needs to stop the main lubricant pump 101 from supplying oil to the oil passage, and then control the flow regulating valve 103 to open the lubricant passage for supplying lubricant to the bearing body 107. The control device 20 turns on the pre-lubrication oil pump 104 to supply oil to the bearing body 107 solely using the pre-lubrication oil pump 104. The controlled equipment is also provided with a pressure sensing unit which respectively acquires outlet pressure P2 of the turbocharger 106, pressure P1 of a lubricating oil channel between the flow regulating valve 103 and the bearing body 107 and pressure P3 received by a sealing structure between the bearing body 107 and the turbocharger 106. The control device 20 adjusts the opening degree of the flow rate adjustment valve 103 so that the pressure value satisfies the protection condition based on the plurality of pressure data and the turbocharger protection condition. On the basis of satisfying the above-described protection conditions, the pre-lubrication oil pump 104 continuously supplies oil to the bearing body 107 to sufficiently lubricate the bearing body 107.
When the turbine engine 105 starts operating, the control device 20 turns off the pre-lubrication pump 104 and turns on the main lubrication pump 101. Due to the switching of the supply pump, the pressure value in the oil passage changes. The oil pressure in the bearing body 107 also changes. The control device 20 readjusts the opening degree of the flow rate adjustment valve 103 based on the pressure value detected by the pressure sensing unit and the turbocharger protection condition so that the pressure value between the pressure sensing units satisfies the above protection condition again. On the basis of satisfying the above-described protection conditions, the main lubricating oil pump 101 continues to supply oil to all oil passages in the turbine engine 105.
When the turbine engine 105 is out of order, the pressure value detected by the pressure sensing unit no longer satisfies the protection condition of the turbocharger, and the control unit 20 adjusts the opening degree of the flow regulating valve 103 according to the pressure data and the protection condition to prevent the lubricating oil in the bearing body 107 from overflowing to the turbocharger 106 and the turbine 108 due to excessive oil pressure.
FIG. 2 is a flow chart illustrating an engine control method provided herein according to an exemplary embodiment. As shown in fig. 2, the present application provides an engine control method including:
s201, when the lubricating oil path conveys lubricating oil to the bearing body, the control device obtains the outlet pressure of the turbocharger, the pressure of the lubricating oil path and the pressure of a sealing structure in the bearing body.
The bearing body is a mechanical structure disposed inside the engine for connecting the turbocharger and the turbine. In addition, the engine also comprises a turbocharger which is coaxially connected with the bearing body, a lubricating oil path and a flow regulating valve which is arranged on the lubricating oil path.
The engine is provided with a plurality of oil paths for storing and transmitting lubricating oil, wherein the lubricating oil paths are oil paths for conveying the lubricating oil to the bearing body. The pressure of the lubricating oil path refers to the pressure generated by the inner side of the bearing body to the outer side when the lubricating oil transmitted in the oil path is transmitted to the bearing body under the driving of the pressure generated by the oil pump at the oil supply end.
The turbocharger includes an inlet and an outlet for supplying and exhausting air to and from the inside of the turbocharger, respectively, to rotate a bearing body coaxially connected to the turbocharger.
The engine also includes a turbine. Sealing structures are respectively arranged between the bearing body and the turbocharger and between the bearing body and the turbine, and the pressure of the sealing structure in the bearing body means that the pressure of the sealing structure arranged between the bearing body and the turbocharger is applied to the direction from the outer side of the bearing body to the inner side of the bearing body.
S202, the control device generates a valve opening adjusting instruction according to the outlet pressure of the turbocharger, the pressure of the lubricating oil path, the pressure of the sealing structure in the bearing body and the protection condition of the turbocharger.
Wherein the turbocharger outlet pressure, the lubricating oil passage pressure, and the pressure on the sealing structure inside the bearing body are obtained from step S201.
The turbocharger protection condition means that the pressure values of the inside and the outside of the bearing body at the sealing structure of the bearing body are limited so as to prevent lubricating oil placed inside the bearing body from overflowing to damage the turbocharger. And the pressure value of the inner side of the bearing body at the sealing structure is smaller than the minimum pressure value of the lubricating oil overflowing from the sealing structure.
The flow regulating valve regulates the relative position between the valve core and the valve seat in the valve through an electric signal sent by the control device, so that the size of the flow area in the regulating valve is changed, namely the opening degree of the regulating valve is regulated.
The control apparatus continues to generate the valve opening adjustment command until the plurality of pressure values satisfy the turbocharger protection condition, thereby protecting the turbocharger.
In the technical scheme, the flow regulating valve is arranged on the lubricating oil path for supplying oil to the bearing body to regulate the oil pressure conveyed into the bearing body, and other pressure related to the bearing body and the protection condition of the turbocharger are combined, so that the oil pressure in the bearing body can be kept in a safe state under various conditions of the use of an engine, the oil leakage phenomenon of the bearing body is not easy to generate, and the oil leakage rate of the bearing body is reduced.
Fig. 3 is a schematic flow chart of an engine control method according to an embodiment of the present application, where the main execution body of the method is a control device. As shown in fig. 3, the present application provides an engine control method including:
s301, generating a valve closing command.
The valve closing command is used to close the flow regulating valve, wherein the working principle of the flow regulating valve is explained in detail in step S202, and is not described herein again. In one embodiment, the natural state of the flow regulating valve is normally closed.
The closing of the flow regulating valve is used for blocking a lubricating oil path so that no lubricating oil is transmitted into the bearing body when the oil pump supplies oil to an oil path in the engine, and therefore the phenomenon that the sealing structure of the bearing body is broken by overhigh oil pressure to enter the turbocharger and the turbocharger is damaged is prevented.
When the flow rate adjustment valve is completely closed, the process proceeds to step S302.
Because the flow regulating valve is closed, the pipe joint arranged on the lubricating oil way does not need to be manually disassembled, and the efficiency of the flushing process of the engine is improved.
And S302, generating a flushing command to control the main lubricating oil pump to supply oil to all oil passages of the engine so as to remove impurities in the oil passages.
Flushing refers to a process of conveying lubricating oil with a certain pressure into an oil duct of an engine to fill the oil duct with the lubricating oil before the engine runs, and removing impurities in the oil duct of the engine through the flowing of the lubricating oil. Among them, the impurities in the oil passage are impurities left in the oil passage in the production and storage of the engine.
All of the oil passages from which lubricant is obtained during flushing are other oil passages in the turbine engine that do not include lubricant passages for delivering lubricant to the bearing body.
When the main lubricating oil pump supplies oil, the built-in driving gear rotates, and the driven gear meshed with the driving gear rotates in the opposite direction, so that lubricating oil is delivered to the oil outlet cavity from the oil inlet cavity along the tooth clearance and the pump wall. Because the lubricating oil is discharged to the oil outlet cavity, low pressure is formed at the oil inlet cavity to promote the lubricating oil in the oil pan to be transmitted to the oil cavity according to the pressure drop direction so as to realize continuous oil supply to the oil channel.
And S303, acquiring a command to be started of the engine.
After the turbine engine flushing is complete, the main lubrication pump is turned off to stop the pump from supplying oil to the turbine engine.
The engine to-be-started command is used for controlling the engine to operate after a preset time period.
More specifically, it is necessary to pre-lubricate the bearing bodies in the engine, i.e., to deliver lubricating oil to the bearing bodies through the oil passages, prior to operation of the engine.
And S304, generating a valve opening instruction for controlling the opening of the flow regulating valve to open a preset opening according to the instruction to be started of the engine.
Wherein the engine to-be-started instruction is acquired from step S303.
According to an instruction of waiting to start the engine, the control equipment generates a valve opening instruction to control the opening of the flow regulating valve to open a preset opening, so that a lubricating oil channel for conveying lubricating oil to the bearing body is conducted, and preparation is made for subsequent oil supply operation of the oil pump.
And S305, after the flow regulating valve executes a valve opening completion instruction, generating a pre-lubricating oil pump opening instruction to control the pre-lubricating oil pump to supply oil to a lubricating oil path.
The control device starts the pre-lubricating oil pump and enables the oil pump to supply oil to the bearing body according to the preset oil pressure.
The operation principle of the pre-lubrication pump is similar to that of the main lubrication pump, which has been explained in detail in step S202 and will not be described herein.
And after the pre-lubricating oil pump is started, the steps S308 and S309 are carried out for the control device to adjust the valve opening of the flow regulating valve according to the pressure value associated with the bearing body and the protection condition of the turbocharger until the lubricating oil in the bearing body cannot overflow, and the step S306 is carried out after the adjustment is finished and the pre-lubricating oil pump supplies oil to the bearing body for a preset time.
And S306, controlling the engine to be started after a preset time length according to the engine to-be-started instruction.
And when the bearing body of the engine is sufficiently lubricated, namely the states of all oil passages in the engine meet the working state of the engine, controlling the engine to start. Wherein, the bearing body in the engine finishes pre-lubrication within a preset time.
And S307, generating a pre-lubricating oil pump closing instruction and a main lubricating oil pump opening instruction to control the main lubricating oil pump to supply oil to all oil passages of the engine.
After the engine starts to operate, the oil pumps for supplying oil to all oil passages in the engine are switched back to the main lubricating oil pump, namely, the pre-lubricating oil pump performs corresponding closing operation according to a pre-lubricating oil pump closing instruction generated by the control equipment, and performs corresponding opening operation according to a main lubricating oil pump opening instruction generated by the control equipment after the pre-lubricating oil pump is completely closed.
At this time, the oil pressure of the engine is controlled by the main lubricating oil pump, and the oil pressure supplied to the bearing body is changed due to the switching of the oil pump, so that the steps S308 and S309 need to be performed again to adjust the size of the flow regulating valve so that the pressure inside and outside the bearing body meets the protection condition of the turbocharger again. When the oil pressure value adjustment is completed, the process returns to step S307 to control the main oil pump to continuously supply oil to the oil passage.
When the engine is in use and is abnormal, the pressure inside and outside the bearing body can not meet the protection condition of the turbocharger any more. Wherein the anomalies that occur include: the turbocharger is overspeed and the power required by the equipment mounting the engine exceeds the rated operating power.
At this time, the control apparatus generates an engine torque limit command and a valve opening adjustment command. The engine torque limit instruction is used for reducing the running power of the engine, and the valve opening adjustment instruction is used for reducing the opening size of the flow regulating valve.
Correspondingly, when lubricating oil way carries lubricating oil to the bearing body, acquire turbo charger outlet pressure, lubricating oil way pressure and the pressure on the internal seal structure of bearing, specifically include:
when the lubricating oil path conveys lubricating oil to the bearing body, the outlet pressure of the turbocharger, the pressure of the lubricating oil path and the pressure of the sealing structure in the bearing body are obtained after the running power of the engine is reduced and the opening size is reduced by the flow regulating valve.
And adjusting the opening of the flow regulating valve according to the pressure until the pressure meets the protection condition of the turbocharger again.
And S308, when the sum of the outlet pressure of the turbocharger and the pressure on the sealing structure in the bearing body is smaller than the pressure of the lubricating oil path and a preset pressure safety threshold, generating a valve opening adjusting instruction.
The sum of the outlet pressure of the turbocharger and the pressure on the sealing structure in the bearing body is the pressure on the outer side of the bearing body, which is received by the sealing structure of the bearing body, and the sum of the pressure of the lubricating oil path and the preset pressure safety threshold value is the pressure on the inner side of the bearing body, which is received by the sealing structure of the bearing body.
The fact that the sum of the outlet pressure of the turbocharger and the pressure on the sealing structure in the bearing body is smaller than the pressure of the lubricating oil path and the preset pressure safety threshold means that the pressure on the outer side of the bearing body is smaller than the pressure on the inner side of the bearing body at the sealing structure, namely the lubricating oil in the bearing body easily breaks through the sealing structure and flows out of the bearing body, and the turbocharger and the turbine are damaged.
The valve opening adjustment command is a command to decrease the opening of the flow rate regulating valve.
And S309, generating a valve opening maintaining instruction when the sum of the outlet pressure of the turbocharger and the pressure on the sealing structure in the bearing body is greater than or equal to the pressure of the lubricating oil path and a preset pressure safety threshold.
The valve opening degree maintaining instruction is used for maintaining the opening size of the flow regulating valve.
The sum of the turbocharger outlet pressure and the pressure on the sealing structure in the bearing body and the sum of the lubricating oil passage pressure and the preset pressure safety threshold are explained in detail in step S308, and are not described in detail herein.
The sum of the outlet pressure of the turbocharger and the pressure on the sealing structure in the bearing body is greater than or equal to the pressure of the lubricating oil path and the preset pressure safety threshold value, namely the pressure on the inner side of the bearing body is less than or equal to the pressure on the outer side of the bearing body at the sealing structure, and at the moment, the lubricating oil in the bearing body cannot overflow the bearing body and only flows in the bearing body and the associated oil duct.
In the technical scheme, the control equipment respectively controls the opening of the flow regulating valve and the switching of the oil supply pump at four stages of the engine so as to realize flushing, bearing body pre-lubrication, lubricating oil transmission in the running process of the engine and oil pressure regulation when the engine is abnormal under the condition of no manual participation, so that the oil pressure borne by the bearing body meets the protection condition of the turbocharger as far as possible, the oil leakage rate of the bearing body is greatly reduced, and the use efficiency of the engine is improved.
Fig. 4 is a schematic structural diagram of an engine control device according to another embodiment of the present application.
As shown in fig. 4, the engine control device 400 includes:
the obtaining module 401 is configured to obtain a turbocharger outlet pressure, a lubricating oil path pressure, and a pressure on a sealing structure in the bearing body when the lubricating oil path delivers the lubricating oil to the bearing body.
And the processing module 402 is used for generating a valve opening adjusting instruction according to the outlet pressure of the turbocharger, the pressure of the lubricating oil path, the pressure of the sealing structure in the bearing body and the protection condition of the turbocharger. Wherein the valve opening adjustment command is used to adjust the opening size of the flow adjustment valve.
The processing module 402 is also configured to generate a valve close command and a flushing command when the engine is performing a flushing. The valve closing instruction is used for closing the flow regulating valve, and the flushing instruction is used for controlling the main lubricating oil pump to supply oil to all oil paths of the engine so as to remove impurities in the oil paths.
The obtaining module 401 is further configured to obtain the command that the engine is to be started when the engine is pre-lubricated.
The processing module 402 is further configured to generate a valve opening instruction according to an instruction to be started of the engine, and generate a pre-lubrication oil pump opening instruction after the flow regulating valve executes the valve opening instruction, so as to control the pre-lubrication oil pump to supply oil to the lubrication oil path.
The processing module 402 is further configured to control the engine to be started after a preset time period according to an instruction to be started of the engine, and generate a pre-lubrication oil pump closing instruction and a main-lubrication oil pump opening instruction to control the main-lubrication oil pump to supply oil to all oil passages of the engine.
The processing module 402 is further configured to generate an engine torque limit command and a valve opening adjustment command when the engine is abnormal. The engine torque limit instruction is used for reducing the running power of the engine, and the valve opening adjustment instruction is used for reducing the opening size of the flow regulating valve.
The obtaining module 401 is further configured to obtain an outlet pressure of the turbocharger, a pressure of the lubricating oil path, and a pressure on a sealing structure in the bearing body after the engine reduces the operating power and the flow regulating valve reduces the opening size, when the lubricating oil path delivers the lubricating oil to the bearing body.
As shown in fig. 5, an embodiment of the present application provides a control device 500, and the control device 500 includes a memory 501 and a processor 502.
Wherein the memory 501 is used for storing computer instructions executable by the processor;
the processor 502, when executing computer instructions, implements the various steps in the engine control method in the embodiments described above. Reference may be made in particular to the description relating to the method embodiments described above.
Alternatively, the memory 501 may be separate or integrated with the processor 502. When the memory 501 is provided separately, the control device 500 further includes a bus for connecting the memory 501 and the processor 502.
Fig. 6 is a schematic structural diagram of an engine control system according to an embodiment of the present application. As shown in fig. 6, the engine control system 600 includes a control device 601, and a main lubricant pump 602, a pre-lubricant pump 603, and an engine 604 controlled by the control device 601. Wherein, a flow regulating valve is arranged on a lubricating oil pipeline of a bearing body of the engine 604.
When the engine 604 needs a flushing operation, the control device 601 closes the flow regulating valve and controls the main lubricating oil pump 602 to deliver lubricating oil with a preset oil pressure to all oil passages in the engine 604, so that impurities in the oil passages can be automatically removed, and the flushing efficiency is improved.
When the engine 604 needs to be used, the bearing bodies in the engine 604 need to be pre-lubricated, i.e., the control device 601 delivers lubricating oil to the bearing bodies in the engine 604. If the main lube pump 602 is still on, the main lube pump 602 needs to be turned off first. The control device 601 sequentially controls the flow regulating valve to open a preset opening degree, starts the prelubricated oil pump 603 to supply oil to the bearing body, and regulates the flow regulating valve according to the relevant pressure of the bearing body and the protection condition of the turbocharger so as to realize the balance of the internal pressure and the external pressure of the bearing body, thereby preventing the bearing body from overflowing the lubricating oil.
When the engine 604 is started, the control apparatus 601 turns off the pre-lubrication oil pump 603, turns on the main lubrication oil pump 602, and re-adjusts the opening degree of the flow rate adjustment valve according to the bearing body-related pressure variation and the turbocharger protection condition to achieve re-balancing of the internal and external pressures of the bearing body, preventing the oil supply pump from being switched and the oil pressure from varying to cause overflow of the lubricating oil in the bearing body. When the engine 604 is abnormal, the control device 601 adjusts the flow regulating valve again to maintain pressure balance, that is, when the control device 601 delivers lubricating oil to the bearing body from the lubricating oil path connected with the bearing body, the opening of the flow regulating valve is adjusted to constantly maintain pressure balance inside and outside the bearing body, so as to reduce oil leakage rate of the bearing body.
The embodiment of the present application further provides a computer-readable storage medium, in which computer instructions are stored, and when the processor executes the computer instructions, the steps in the engine control method in the foregoing embodiment are implemented.
Embodiments of the present application also provide a computer program product, which includes computer instructions, and the computer instructions, when executed by a processor, implement the steps in the engine control method in the above embodiments.
Other embodiments of the present application will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the application and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the application being indicated by the following claims.
It will be understood that the present application is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the application is limited only by the appended claims.
Claims (10)
1. A control method of an engine including a bearing body and a turbocharger that are coaxially connected, and a lubricating oil passage and a flow rate adjusting valve provided on the lubricating oil passage, the method being operated in a control apparatus, the method comprising:
when the lubricating oil path conveys lubricating oil to the bearing body, acquiring outlet pressure of the turbocharger, pressure of the lubricating oil path and pressure of a sealing structure in the bearing body;
generating a valve opening adjusting instruction according to the turbocharger outlet pressure, the lubricating oil path pressure, the pressure on the sealing structure in the bearing body and the turbocharger protection condition;
wherein the valve opening adjustment instruction is used to adjust an opening size of the flow rate adjustment valve.
2. The method according to claim 1, wherein generating a valve opening adjustment command based on the turbocharger outlet pressure, the lubricating oil passage pressure, and a pressure on a seal structure in the bearing body and a turbocharger protection condition, specifically comprises:
and when the sum of the outlet pressure of the turbocharger and the pressure on the sealing structure in the bearing body is smaller than the pressure of the lubricating oil path and a preset pressure safety threshold, generating the valve opening adjusting instruction.
3. The method of claim 2, further comprising:
when the sum of the outlet pressure of the turbocharger and the pressure on the sealing structure in the bearing body is greater than or equal to the pressure of the lubricating oil path and a preset pressure safety threshold, generating a valve opening degree maintaining instruction;
wherein the valve opening degree maintaining instruction is to maintain an opening size of the flow rate adjustment valve.
4. The method of any of claims 1-3, wherein prior to obtaining the turbocharger outlet pressure, the lubrication circuit pressure, and the pressure on the seal structure within the bearing body while the lubrication circuit is delivering lubrication oil to the bearing body, the method further comprises:
acquiring an instruction to be started of an engine; the engine to-be-started instruction is used for controlling the engine to operate after a preset time period;
generating a valve opening instruction according to the engine to-be-started instruction, wherein the valve opening instruction is used for controlling the opening of the flow regulating valve to open a preset opening;
and after the flow regulating valve executes the valve opening instruction, generating a pre-lubricating oil pump opening instruction, wherein the pre-lubricating oil pump opening instruction is used for controlling a pre-lubricating oil pump to supply oil to the lubricating oil way.
5. The method of claim 4, wherein after the flow control valve generates a prelubricated oil pump opening command after executing the valve opening command, the method further comprises:
controlling the engine to be started after the preset time length according to the instruction to be started of the engine;
and generating a pre-lubricating oil pump closing instruction and a main lubricating oil pump opening instruction so as to control the main lubricating oil pump to supply oil to all oil passages of the engine.
6. The method of any of claims 1-3, wherein prior to obtaining the turbocharger outlet pressure, the lubrication oil path pressure, and the pressure on the seal structure within the bearing body while the lubrication oil path is delivering lubrication oil to the bearing body, the method further comprises:
generating an engine torque limit instruction and a valve opening adjusting instruction; the engine torque limit instruction is used for reducing the running power of the engine, and the valve opening adjustment instruction is used for reducing the opening size of the flow regulating valve;
correspondingly, when the lubricating oil way is to the bearing body carries lubricating oil, obtain turbo charger outlet pressure, lubricating oil way pressure and the pressure on the seal structure in the bearing body specifically includes:
when the lubricating oil path conveys lubricating oil to the bearing body, acquiring the outlet pressure of the turbocharger, the pressure of the lubricating oil path and the pressure on a sealing structure in the bearing body after the running power of the engine is reduced and the opening size of the flow regulating valve is reduced.
7. The method of any of claims 1-3, wherein when the lubrication oil circuit is delivering lubrication oil to the bearing body, prior to obtaining the turbocharger outlet pressure, the lubrication oil circuit pressure, and the pressure on the seal structure within the bearing body, the method further comprises:
generating a valve closing command, wherein the valve closing command is used for closing the flow regulating valve;
and generating a flushing instruction, wherein the flushing instruction is used for controlling a main lubricating oil pump to supply oil to all oil paths of the engine so as to remove impurities in the oil paths.
8. A control apparatus, characterized by comprising: a processor and a memory communicatively coupled to the processor;
the memory stores computer-executable instructions;
the control processor, when executing the computer instructions, is configured to implement the control method of any one of claims 1 to 7.
9. An engine system characterized by comprising the control apparatus, the engine, the main oil pump, and the pre-oil pump according to claim 8.
10. A computer-readable storage medium, having stored thereon computer instructions, which when executed by a processor, are configured to implement the control method according to any one of claims 1 to 7.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111541964.3A CN114165310B (en) | 2021-12-16 | 2021-12-16 | Engine control method, device, system and storage medium |
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| CN202111541964.3A CN114165310B (en) | 2021-12-16 | 2021-12-16 | Engine control method, device, system and storage medium |
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| CN114165310A true CN114165310A (en) | 2022-03-11 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06257455A (en) * | 1993-03-05 | 1994-09-13 | Toyota Autom Loom Works Ltd | Preventing mechanism for lubricating oil from flowing out into intake manifold from turbocharger |
| CN203702328U (en) * | 2014-01-02 | 2014-07-09 | 宁波威孚天力增压技术有限公司 | Turbocharging system capable of controlling oil inlet of lubricating oil |
| CN105332792A (en) * | 2015-10-27 | 2016-02-17 | 潍柴动力股份有限公司 | Turbocharger device and control method for reducing oil leakage risk of turbocharger |
| CN110953035A (en) * | 2019-12-10 | 2020-04-03 | 潍柴动力股份有限公司 | Oil inlet pressure control method and device |
| CN214787683U (en) * | 2020-12-03 | 2021-11-19 | 潍柴动力股份有限公司 | Lubricating oil pressure limiting protection structure, turbocharger and engine |
-
2021
- 2021-12-16 CN CN202111541964.3A patent/CN114165310B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06257455A (en) * | 1993-03-05 | 1994-09-13 | Toyota Autom Loom Works Ltd | Preventing mechanism for lubricating oil from flowing out into intake manifold from turbocharger |
| CN203702328U (en) * | 2014-01-02 | 2014-07-09 | 宁波威孚天力增压技术有限公司 | Turbocharging system capable of controlling oil inlet of lubricating oil |
| CN105332792A (en) * | 2015-10-27 | 2016-02-17 | 潍柴动力股份有限公司 | Turbocharger device and control method for reducing oil leakage risk of turbocharger |
| CN110953035A (en) * | 2019-12-10 | 2020-04-03 | 潍柴动力股份有限公司 | Oil inlet pressure control method and device |
| CN214787683U (en) * | 2020-12-03 | 2021-11-19 | 潍柴动力股份有限公司 | Lubricating oil pressure limiting protection structure, turbocharger and engine |
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| CN114165310B (en) | 2023-04-18 |
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