CN115750029A - Engine oil supply system and control method - Google Patents
Engine oil supply system and control method Download PDFInfo
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- CN115750029A CN115750029A CN202211491287.3A CN202211491287A CN115750029A CN 115750029 A CN115750029 A CN 115750029A CN 202211491287 A CN202211491287 A CN 202211491287A CN 115750029 A CN115750029 A CN 115750029A
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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
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- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
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Abstract
The application discloses engine oil feeding system for pump the oil that the oil pan stored in order to lubricate each kinematic pair of engine. This oil supply system includes: the oil collector comprises an oil suction pipeline and an electromagnetic valve, the oil suction pipeline comprises an upper oil suction port, a lower oil suction port and an oil outlet, and the lower oil suction port is closer to the bottom wall of the oil pan relative to the upper oil suction port in the oil pan. The engine oil supply system solves the problem of abnormal abrasion or damage of the engine caused by the blockage of the oil collector in a low-temperature environment, ensures the normal circulation of engine oil, and meets the lubricating requirement of the engine during operation.
Description
Technical Field
The application relates to the technical field of vehicle engines, in particular to an engine oil supply system and a control method.
Background
The engine is a complex mechanical assembly structure body, a plurality of kinematic pairs are arranged in the engine, and when the engine works, the friction surfaces of the kinematic pairs usually make relative motion at a high speed, so that friction is generated between the metal surfaces of the kinematic pairs, and therefore, the engine oil is required to be used for lubrication so as to reduce mechanical wear between the kinematic pairs. Typically, the oil flows through the friction surfaces and is recovered and stored in an oil pan that closes the crankcase, from which the oil pump draws the oil through an oil collector and pumps it through an oil gallery to a main oil gallery, through which it is ultimately delivered to the various kinematic pairs for lubrication.
In the engine, part of exhaust gas generated by combustion leaks into the crankcase through the piston rings during operation, and moisture, unburned fuel, combustion intermediate products, and the like carried by the exhaust gas enter the engine oil. When the engine is stopped in a low-temperature environment, the engine does not move at a high speed any longer to generate heat, so that water is more easily mixed into the engine oil. Therefore, in a low-temperature environment, the oil collected in the oil pan is likely to be mixed with water, and since the density of water is higher than that of the oil, the oil mixed with water in the oil pan will be subjected to a standing stratification phenomenon, and the oil with a high water content will be subjected to a smoothie crystallization or an integral freezing.
Generally, a filter screen is arranged in an oil collector extending into an oil pan, so that ice and sand generated in engine oil in a low-temperature environment can cause the oil collector to be blocked, the oil collector can not absorb the engine oil, and the oil pump can not pump the engine oil to each kinematic pair when the engine is started, so that the engine is abnormally abraded or damaged.
Disclosure of Invention
The embodiment of the application provides an engine oil supply system and a control method, and aims to solve the problem that an oil collector of the engine oil supply system is blocked under a low-temperature environment to cause abnormal abrasion or damage of an engine. The technical scheme is as follows:
in one aspect, an engine oil supply system is provided for pumping oil stored in an oil pan and supplying the pumped oil to each kinematic pair of an engine, and is characterized in that: the engine oil supply system includes: the oil filter comprises an oil collector, an oil pump, an oil pipeline, a filter module and an oil duct;
the device comprises an oil suction pipeline and an electromagnetic valve;
the oil suction pipeline comprises an upper oil suction port, a lower oil suction port and an oil outlet, and the oil outlet is respectively communicated with the upper oil suction port and the lower oil suction port; the oil suction pipeline is provided with an electromagnetic valve mounting hole, and the electromagnetic valve is mounted in the electromagnetic valve mounting hole and used for opening or closing to suck engine oil from the upper oil suction port; the upper oil suction port and the lower oil suction port both extend into the engine oil stored in the oil pan, and the position of the lower oil suction port in the oil pan is closer to the bottom wall of the oil pan relative to the upper oil suction port;
the oil pump is connected with the oil outlet of the oil suction pipeline and used for pumping the oil stored in the oil pan and pumping the oil to the engine;
one end of the engine oil pipeline is connected with the engine oil pump, and the other end of the engine oil pipeline is connected with the engine filter module and used for inputting the engine oil pumped by the engine oil pump into the engine filter module;
the machine filter module comprises an oil filter and a heat exchanger, the oil filter module is communicated with the oil pipeline and the oil duct, and the machine filter module is used for processing the oil pumped by the oil pump through the oil filter and the heat exchanger and conveying the processed oil into the oil duct;
the oil passage comprises a main oil passage and a branch oil passage, the main oil passage is communicated with each kinematic pair of the engine through the branch oil passage, and the main oil passage is used for supplying the processed engine oil conveyed by the filtering module to each kinematic pair of the engine.
In a possible implementation manner, the oil suction pipeline further comprises an upper oil suction pipeline and a lower oil suction pipeline, and the upper oil suction pipeline and the lower oil suction pipeline jointly converge into the oil outlet;
the pipe opening of the upper oil suction pipeline, which is far away from the oil outlet, is fixedly connected with the upper oil suction opening, and the pipe opening of the lower oil suction pipeline, which is far away from the oil outlet, is fixedly connected with the lower oil suction opening.
In one possible implementation, the lower oil suction port comprises a lower oil suction screen and a lower oil suction port housing;
the lower oil suction port shell is of a conical structure, the lower oil suction filter screen is assembled at one end with the large diameter of the lower oil suction port shell and is connected with the pipe orifice, far away from the oil outlet, of the lower oil suction pipeline, and one end with the small diameter of the lower oil suction port shell extends into the engine oil stored in the oil pan;
the lower oil suction filter screen is of an arc-shaped net structure protruding towards the lower oil suction port shell.
In one possible implementation, the upper oil suction port includes an upper oil suction screen and an upper oil suction port housing;
the upper oil suction port shell is of a cylindrical structure, one end of the upper oil suction port shell is provided with the upper oil suction filter screen and is connected with a pipe orifice of the upper oil suction pipeline, which is far away from the oil outlet, and the other end of the upper oil suction port shell extends into the engine oil stored in the oil pan;
the upper oil absorption filter screen is of a planar net structure.
In one possible implementation manner, the machine filter module comprises a machine filter module body, an oil filter, a pressure sensor and a heat exchanger;
the engine oil filter, the heat exchanger and the pressure sensor are fixed on the engine filter module body, and the engine filter module body is fixed on a cylinder body of the engine;
the engine oil pipeline, the heat exchanger, the engine oil filter and the oil duct are sequentially connected, so that the engine oil pumped by the engine oil pump flows into the heat exchanger through the engine oil pipeline and then flows into the oil duct through the engine oil filter.
In a possible implementation manner, the electromagnetic valve is a normally closed electromagnetic valve, the opening or closing of the electromagnetic valve is controlled according to the state of the engine and the state of the vehicle, in the closed state of the electromagnetic valve, the upper oil suction pipeline is closed, the oil collector sucks the engine oil through the lower oil suction opening, in the open state of the electromagnetic valve, the upper oil suction pipeline is opened, and the oil collector sucks the engine oil through the mixture of the upper oil suction opening and the lower oil suction opening.
In one possible implementation manner, a check valve is installed in the engine oil pipeline, and the check valve is used for preventing the engine oil in the engine oil pipeline from reversely flowing back to the engine oil pump.
In another aspect, a method for controlling an engine oil supply system is provided, where the method includes:
collecting temperature parameters related to a vehicle;
detecting whether the vehicle is in a low-temperature environment or not according to the temperature parameter;
the manner of sucking the oil is determined based on the detection result.
In one possible implementation manner, the determining the manner of sucking the engine oil based on the detection result includes:
and if the detection result shows that the vehicle is in the low-temperature environment, the electromagnetic valve is opened, and the oil collector sucks the engine oil through the lower oil suction port and the upper oil suction port in a mixed mode.
In one possible implementation manner, the determining the manner of sucking the engine oil based on the detection result includes:
and if the detection result shows that the vehicle is not in the low-temperature environment, the electromagnetic valve is not opened, and the oil collector sucks the engine oil through the lower oil suction port.
The technical scheme provided by the embodiment of the application has the following beneficial effects:
the engine oil supply system pumps engine oil from an oil sump through mutual matching of an oil collector, an engine oil pump, an engine oil pipeline, a filter module and an oil channel, and pumps the engine oil to each kinematic pair of the engine through the engine oil pump.
The oil collector comprises a lower oil suction port and an upper oil suction port controlled to be opened and closed by an electromagnetic valve, the position of the lower oil suction port in the oil pan is closer to the bottom wall of the oil pan relative to the upper oil suction port and is used for sucking the engine oil at the bottom of the oil pan, and the upper oil suction port is used for sucking the engine oil at the upper layer in the oil pan. Under the normal working state, the electromagnetic valve is closed, and the oil collector sucks the engine oil through a lower oil suction port extending into the bottom of the oil pan; when under low temperature environment, the moisture of deposit machine oil bottom takes place to freeze and produces the ice-sand in the oil pan, lower oil suction port takes place to block up and when unable normal absorption because of the ice-sand, the solenoid valve is opened, go up the oil suction port and absorb the machine oil on oil pan upper strata, the machine oil on upper strata is pumped to the machine and is strained the module afterwards, after the heating of heat exchanger and the filtration of oil cleaner in the machine straining module, machine oil is carried into each kinematic pair of engine, the normal operating of engine has been guaranteed, engine machine oil circulates to the oil pan after having absorbed the heat that engine burning produced and the heat that mechanical motion produced, the ice-sand in the machine oil in the messenger oil pan melts and evaporates, thereby the water content of machine oil has been reduced. The engine oil supply system solves the problem of abnormal abrasion or damage of an engine caused by blockage of an oil collector in a low-temperature environment, absorbs upper-layer engine oil through the auxiliary upper oil suction port, accelerates the temperature rise process of the engine oil by the aid of heat generated by the heat exchanger and the engine in operation, further melts and evaporates frozen water in the engine oil, continuously provides the engine oil for the engine, ensures normal circulation of the engine oil of the engine, and meets the lubricating requirement of the engine during operation.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.
Drawings
FIG. 1 illustrates an engine oil supply system according to an embodiment of the present disclosure;
fig. 2 is a schematic structural diagram of an oil suction pipeline provided in an embodiment of the present application, where the oil suction pipeline is located in an oil collector of an engine oil supply system provided in an embodiment of the present application;
fig. 3 is a schematic structural diagram of an oil collector provided in an embodiment of the present application;
fig. 4 is an exploded view of an oil collector provided in an embodiment of the present application;
fig. 5 is a schematic structural diagram of a filtering module provided in an embodiment of the present application;
fig. 6 is a flowchart of a control method of an engine oil supply system according to an embodiment of the present disclosure.
The reference numerals denote:
1-an oil collector;
2-the oil pump;
3-an engine oil pipeline;
4-a mechanical filter module;
5-an oil duct;
6-oil suction pipeline;
7-an electromagnetic valve;
8-upper oil suction port;
9-a lower oil suction port;
10-an oil outlet;
11-a solenoid valve mounting hole;
12-an oil filter;
13-a heat exchanger;
14-main oil gallery;
15-branch oil ducts;
16-lower oil suction filter screen;
17-a lower oil suction port shell;
18-installing an oil absorption filter screen;
19-an upper suction inlet housing;
20-filtering the module body;
21-a pressure sensor;
22-upper oil suction line;
23-downdraft line.
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 some, but not all, embodiments of the present application. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application without making any creative effort belong to the protection scope of the present application.
Reference to orientation terms such as "upper", "lower", "side", etc. in the embodiments of the present application are generally made with respect to the relative relationship of the orientations shown in fig. 1, and these orientation terms are used only for the purpose of describing the structures and the relationship between the structures more clearly, and are not intended to describe absolute orientations. When the product is placed in different postures, the orientation may be changed, for example, "up" and "down" may be interchanged.
Unless defined otherwise, all technical terms used in the examples of the present application have the same meaning as commonly understood by one of ordinary skill in the art.
In order to make the technical solutions and advantages of the present application clearer, the following will describe the embodiments of the present application in further detail with reference to the accompanying drawings.
The engine is internally provided with a plurality of kinematic pairs, when in work, friction surfaces (such as a crankshaft journal and a bearing, a camshaft journal and a bearing, a piston ring and a cylinder wall and the like) move relatively at a high speed, the friction between metal surfaces can increase the power loss in the engine, and heat generated by the friction is extremely high on the surfaces of meltable parts, so that the engine cannot normally run. In order to ensure proper operation of the engine, it is therefore necessary to lubricate the surfaces that move relative to each other within the engine. The lubricating system is a system for lubricating an engine, and when the engine works, the lubricating system can pump the engine oil stored in an oil pan at the lower part of the engine through the oil pump and lubricate the surface of each part from the oil pump through an oil pipeline.
The oil collector is arranged in front of an oil inlet of the oil pump, extends into engine oil stored in the oil pan and is used for sucking the engine oil, and a filter screen is arranged in the oil collector and is used for filtering the engine oil. However, in a low-temperature environment, when the engine stops and no longer generates heat, the oil pan often contains ice and sand due to the mixed water, so that the oil collector blocks the filter screen due to the ice and sand, and the oil is difficult to be sucked from the oil pan, which may result in the failure of lubricating the engine, and cause abnormal wear or damage to the engine.
In order to solve the problem of blockage of an oil collector of an oil supply system in a low-temperature environment, as shown in fig. 1 to 5, a first aspect of the present application provides an engine oil supply system for pumping oil stored in an oil pan and supplying the pumped oil to each kinematic pair of an engine.
FIG. 1 shows an engine oil supply system according to an embodiment of the present invention. Referring to fig. 1, the engine oil supply system includes: the oil filter comprises an oil collector 1, an oil pump 2, an oil pipeline 3, a filter module 4 and an oil duct 5, wherein the oil collector 1 comprises an oil suction pipeline 6 and an electromagnetic valve 7; the oil suction pipeline 6 comprises an upper oil suction port 8, a lower oil suction port 9 and an oil outlet 10, and the oil outlet 10 is respectively communicated with the upper oil suction port 8 and the lower oil suction port 9; the oil suction pipeline 6 is provided with an electromagnetic valve mounting hole 11, and the electromagnetic valve 7 is mounted in the electromagnetic valve mounting hole 11 and used for opening or closing the oil suction port 8 to suck engine oil; the upper oil suction opening 8 and the lower oil suction opening 9 both extend into the engine oil stored in the oil pan, and the lower oil suction opening 9 is positioned in the oil pan closer to the bottom wall of the oil pan relative to the upper oil suction opening 8.
The oil pump 2 is connected with an oil outlet 10 of the oil suction pipeline 6 and used for pumping the oil stored in the oil pan and supplying the oil to the engine.
One end of the engine oil pipeline 3 is connected with the engine oil pump 2, and the other end of the engine oil pipeline is connected with the engine filter module 4 and used for inputting the engine oil pumped by the engine oil pump 2 into the engine filter module 4.
The machine filter module 4 comprises an oil filter 12 and a heat exchanger 13, the machine filter module 4 is communicated with the oil pipeline 3 and the oil duct 5, and the machine filter module 4 is used for processing the oil pumped by the oil pump 2 through the oil filter 12 and the heat exchanger 13 and conveying the processed oil into the oil duct 5.
The oil passage 5 includes a main oil passage 14 and a branch oil passage 15, wherein the main oil passage 14 is communicated with each kinematic pair of the engine through the branch oil passage 15, and is used for providing the above-mentioned treated engine oil delivered by the filter module 4 to each kinematic pair of the engine.
As is apparent from fig. 1, an oil collector 1, an oil pump 2, an oil pipeline 3, a filter module 4 and an oil duct 5 of the oil supply system are sequentially connected and cooperate with one another, and under the driving of the oil pump 2, the oil collector 1 pumps oil from an oil pan, and then the oil is pumped to the filter module 4 through the oil pipeline 3, further filtered and heated by the filter module 4, enters the oil duct 5, and finally is conveyed to each kinematic pair of the engine.
Wherein, oil collector 1 among the oil feeding system that this application provided is provided with two oil absorption mouths, oil absorption mouth 8 and lower oil absorption mouth 9 on promptly, should go up oil absorption mouth 8 and lower oil absorption mouth 9 and all face the oil pan bottom to in stretching into the engine oil of storing in the oil pan, wherein the position of oil absorption mouth 9 is more close to the diapire of oil pan for last oil absorption mouth 8 in the oil pan down, for example, lower oil absorption mouth 9 extends to the bottom of oil pan, and goes up below the engine oil liquid level that oil absorption mouth 8 just submerged in the oil pan, more is close to the upper liquid level of engine oil.
The oil collector 1 of the engine oil supply system provided by the application comprises an oil suction pipeline 6 and an electromagnetic valve 7.
Fig. 2 is a schematic structural diagram of an oil suction pipeline 6 according to an embodiment of the present application, and as can be seen from fig. 2, the oil suction pipeline 6 is an integrated main body, and includes two branch pipes, namely an upper oil suction pipeline 22 and a lower oil suction pipeline 23, and the upper oil suction pipeline 22 and the lower oil suction pipeline 23 jointly converge into an oil outlet 10 of the oil suction pipeline 6.
Fig. 3 is a schematic structural diagram of the oil collector 1 according to the embodiment of the present application, and it can be seen from fig. 3 that a pipe orifice of the upper oil suction pipeline 22, which is far away from the oil outlet 10, is connected to the upper oil suction port 8, and a pipe orifice of the lower oil suction pipeline 23, which is far away from the oil outlet 10, is connected to the lower oil suction port 9.
As can be seen from fig. 2 and 3, the oil suction line includes: an upper oil suction pipeline 22 connected with the upper oil suction port 8 and a lower oil suction pipeline 23 connected with the lower oil suction port 9, wherein the upper oil suction port 8 and the lower oil suction port 9 are both oil inlets of the oil suction pipeline 6, namely an inlet of engine oil. The upper oil suction pipeline 22 and the lower oil suction pipeline 23 are jointly merged into the oil outlet 10 of the oil suction pipeline 6, and the oil outlet 10 is an engine oil outlet. Therefore, for the oil suction pipeline 6, the oil outlet 10 is communicated with the upper oil suction opening 8 and the lower oil suction opening 9 through the upper oil suction pipeline 22 and the lower oil suction pipeline 23, so that the engine oil sucked from the upper oil suction opening 8 or the engine oil sucked from the lower oil suction opening 9 can enter the next stage of the oil supply system through the oil outlet 10.
Further, fig. 4 is an exploded view of the oil collector 1 according to the embodiment of the present application, referring to fig. 4, the upper oil suction port 8 includes an upper oil suction screen 18 and an upper oil suction port housing 19, wherein the upper oil suction screen 18 has a planar mesh structure; the upper oil suction port shell 19 is of a cylindrical structure, an upper oil suction filter screen 18 is assembled at one end of the upper oil suction port shell 19 and is connected with the pipe orifice, far away from the oil outlet 10, of the upper oil suction pipeline 22, and the other end of the upper oil suction port shell 19 extends into engine oil stored in the oil pan.
The upper oil suction opening 8 is located in the oil pan closer to the upper level of the oil in the oil pan than the lower oil suction opening 9, for example, the upper oil suction opening 8 is just submerged below the oil level in the oil pan, closer to the upper level of the oil.
Therefore, the upper oil suction opening 8 is used for sucking the upper layer of oil, and in order to ensure that the upper oil suction opening 8 can be located at a position closer to the upper layer of oil liquid in the oil, as shown in fig. 2 to 4, in a possible implementation manner, the configuration of the upper oil suction pipeline 22 may be a combination of a straight pipe and an elbow, and when installed, the extending direction of the straight pipe of the upper oil suction pipeline 22 is kept parallel to the bottom wall of the oil pan; the length of the bend extending to the bottom of the oil pan can be designed according to the distance between the oil collector 1 and the oil pan and the position of the oil level in the oil pan, so as to ensure that the upper oil suction port shell 19 connected with the bend of the upper oil suction pipeline 22 can just submerge below the oil level.
As can also be seen from fig. 4, the lower oil suction port 9 comprises a lower oil suction screen 16 and a lower oil suction port shell 17, wherein the lower oil suction screen 16 is in an arc-shaped mesh structure protruding towards the lower oil suction port shell 17; the lower oil suction port housing 17 is of a conical structure, and referring to fig. 4, a lower oil suction screen 16 is mounted at one end of the lower oil suction port housing 17 with a large diameter and is connected with a pipe orifice of the lower oil suction pipe 23 far away from the oil outlet 10, and one end of the lower oil suction port housing 17 with a small diameter extends into the engine oil stored in the oil pan to be an inlet of the oil collector 1.
The lower suction port 9 is located in the oil pan closer to the bottom wall of the oil pan than the upper suction port 8, for example, the lower suction port 9 extends to the bottom of the oil pan.
Therefore, the lower suction port 9 is used to suck the engine oil of the bottom layer. However, easily gather impurity bottom the oil pan, for guaranteeing this time oil sucking port 9 can effectively absorb the machine oil of oil pan bottom, on the one hand, this time oil sucking port casing 17 is set up to the back taper structure, and the oil pan bottom is stretched into to the one end of the minor diameter of this back taper structure, and this port has less diameter, consequently can avoid the great impurity of volume to avoid this time oil sucking port 9 to be blockked up by the great impurity of volume. On the other hand, the lower oil suction filter screen 16 in the oil suction port 9 sets up to the bellied arc network structure of oil suction port casing 17 downwards to increase the area of contact of filter screen and machine oil, reduce the resistance that interception machine oil passes through the filter screen, and then reduce the probability that the filter screen is blockked up, further impel the machine oil that oil suction port 9 can effectively absorb the oil pan down.
As shown in fig. 2 to 4, the oil suction pipe 6 is further provided with an electromagnetic valve mounting hole 11, the electromagnetic valve mounting hole 11 is provided on the upper oil suction pipe 22 of the oil suction pipe 6, and referring to fig. 1, the electromagnetic valve 7 is mounted on the electromagnetic valve mounting hole 11, so that the electromagnetic valve 7 is used for controlling the on-off of the upper oil suction pipe 22, that is, when the electromagnetic valve 7 is opened, the upper oil suction pipe 22 is a passage, and the oil collector 1 can suck the oil from the oil pan through the upper oil suction opening 8; when the electromagnetic valve 7 is closed, the upper oil suction pipeline 22 is disconnected, and the upper oil suction port 8 does not suck the engine oil.
The electromagnetic valve 7 is a normally closed electromagnetic valve, that is, in a normal state, the electromagnetic valve 7 is in a closed state, in which the upper oil suction port 8 does not suck the engine oil, and the oil collector 1 only sucks the engine oil through the lower oil suction port 9. The general state refers to a state in which the engine can normally operate, for example, the vehicle and the engine are in a normal temperature environment.
In contrast, the electromagnetic valve 7 is opened when the vehicle or the engine is in a low-temperature environment. Under the low-temperature environment, the lower oil suction port 9 of the oil collector 1 is judged to be incapable of normally sucking the engine oil at the bottom of the oil pan, so that the electromagnetic valve 7 is opened to conduct the upper oil suction pipeline 22, and the oil collector 1 starts the upper oil suction port 8 to suck the engine oil, thereby ensuring the lubrication required by the operation of the engine.
Further, the determination of the state of the vehicle or the engine, and the Control of the opening and closing state of the solenoid valve 7 are both performed by an ECU (Electronic Control Unit) controller of the vehicle.
After the whole vehicle is electrified, the ambient temperature T1 of the vehicle and the engine oil temperature T2 of an oil pan of an engine are collected, the ECU controller detects whether the vehicle is in a low-temperature environment according to the collected temperature parameters, and correspondingly controls the electromagnetic valve 7.
When the collected temperature parameter is lower than the calibration temperature, the ECU controller judges that the vehicle is in a low-temperature environment and controls the electromagnetic valve 7 to be opened so as to start the upper oil suction port 8 to suck the engine oil.
Along with the engine oil sucked by the upper oil suction port 8 enters each kinematic pair of the engine, the engine oil absorbs the heat generated by the combustion of the engine and the heat generated by the mechanical movement in the process of lubricating the engine, when the engine oil is circularly returned to the bottom shell, the ice and sand in the bottom shell can be melted and evaporated, so that the problem of blockage near the lower oil suction port of the oil collector 1 is solved, the lower oil suction port 9 of the oil collector 1 can normally work, if the lower oil suction port 9 is recovered to be normal, the electromagnetic valve 7 is closed, namely the upper oil suction pipeline 22 is closed, and the engine oil is recovered to be only sucked by the lower oil suction port 9.
Therefore, the ECU controller is required to detect whether the oil supply system recovers to a normal working state in real time and correspondingly adjust the opening or closing of the electromagnetic valve 7 according to the acquired parameters. Specifically, the ECU controller continuously collects the oil temperature T2 and the oil pressure P in the engine. If the engine oil temperature T2 is lower, ice and sand may exist at the bottom of the oil pan; if the oil pressure P is low, the engine oil used for lubrication is low, and there may be a problem of clogging of the oil suction port or oil loss. Therefore, a lower oil temperature T2 or a lower oil pressure P indicates that the oil supply system is still not operating properly.
When the collected engine oil temperature T2 is not higher than the calibration temperature, the opening state of the electromagnetic valve 7 is kept; when the collected engine oil temperature T2 is higher than the calibration temperature and the engine oil pressure P is higher than the calibration pressure, the ECU controller judges that an engine oil supply system of an oil supply system of the vehicle is normal, and at the moment, the ECU controller controls the electromagnetic valve 7 to be closed. When the collected engine oil temperature T2 is higher than the calibration temperature and the engine oil pressure P is still not higher than the calibration pressure, the ECU controller judges that the engine oil in an oil supply system in the vehicle is less and insufficient for lubricating the engine, and at the moment, the ECU controller turns off the electromagnetic valve 7 and broadcasts an engine oil fault alarm.
After the oil collector 1 sucks the engine oil, the engine oil is driven by the engine oil pump 2 and is conveyed into the filter module 4 through the engine oil pipeline 3.
Referring to fig. 1, one end of an engine oil pipeline 3 is connected to an engine oil pump 2, and the other end of the engine oil pipeline is connected to a filter module 4, and is used for inputting the engine oil pumped by the engine oil pump 2 into the filter module 4. In order to prevent the engine oil from flowing backwards in the engine oil pipeline 3, a one-way valve is installed in the engine oil pipeline 3 and is used for preventing the engine oil in the engine oil pipeline 3 from flowing backwards to the engine oil pump 2.
The engine oil pipeline 3 conveys the engine oil into the engine filter module 4, and the engine filter module 4 further filters the engine oil to prevent fine impurities from entering a kinematic pair of the engine to cause abnormal abrasion of the kinematic pair. In addition, the machine filter module 4 can also heat the engine oil.
Fig. 5 is a schematic structural diagram of a filtering module 4 according to an embodiment of the present disclosure. Referring to fig. 5, the oil filter module 4 includes an oil filter module body 20, a pressure sensor 21, an oil filter 12, and a heat exchanger 13. Wherein, pressure sensor 21, oil cleaner 12 and heat exchanger 13 are fixed on the module body 20 is strained to the machine, and the module body 20 is strained to the machine passes through the bolt fastening on the engine cylinder block. The engine oil pipeline 3, the heat exchanger 13, the oil filter 12 and the oil duct 5 are sequentially connected, so that the engine oil pumped by the engine oil pump 2 enters the heat exchanger 13 through the engine oil pipeline 3, then enters the oil filter 12 and finally flows into the oil duct 5.
Two ends of the heat exchanger 13 are respectively communicated with the oil filter 12 and the engine oil pipeline 3, and engine oil firstly enters the heat exchanger 13 through the engine oil pipeline 3, is heated by the heat exchanger 13 and then enters the oil filter 12. The heating function of the heat exchanger 13 can be realized by integrating a heating module in the heat exchanger 13; the heat exchange of the engine oil can also be realized by cooling water circulating in the engine, and the cooling water absorbs heat generated by the operation of the engine in the process of small circulation in the engine to rapidly heat up, so that the cooling water can exchange heat with the engine oil with lower temperature after entering the heat exchanger 13. The heat exchanger 13 heats the engine oil, the temperature of the engine oil rises, the ice and sand in the oil pan melts, the blockage of the oil suction port of the oil collector 1 is further avoided, and an oil supply system of the engine can work normally.
The engine oil heated by the heat exchanger 13 enters the oil filter 12, and the oil filter 12 further filters impurities in the engine oil to prevent fine impurities from entering a kinematic pair of the engine. The engine oil enters the oil duct 5 after being heated and filtered by the machine filter module 4, the oil duct 5 comprises a main oil duct 14 and a branch oil duct 15, and the main oil duct 14 is communicated with each kinematic pair of the engine through the branch oil duct 15 and is used for distributing the processed engine oil to each kinematic pair of the engine.
A pressure sensor 21 is also fixed to the filter module body 20. The sensor is used to detect the oil pressure P in the engine. And the ECU controller of the vehicle acquires the engine oil pressure P in real time and judges whether the engine oil supply system works normally or not according to the parameter.
In summary, the present application provides an engine oil supply system, which pumps engine oil from an oil pan through the mutual cooperation of an oil collector 1, an engine oil pump 2, an engine oil pipeline 3, a filter module 4 and an oil duct 5, and pumps the engine oil from the oil pan to each kinematic pair of the engine oil pump 2.
The oil collector 1 comprises a lower oil suction port 9 and an upper oil suction port 8 controlled to be opened and closed by an electromagnetic valve 7, the lower oil suction port 9 is located in the oil pan and closer to the bottom wall of the oil pan relative to the upper oil suction port 8, and is used for sucking the engine oil at the bottom of the oil pan, and the upper oil suction port 8 is used for sucking the engine oil at the upper layer of the oil pan. Under the normal working state, the electromagnetic valve 7 is closed, and the oil collector 1 sucks the engine oil through a lower oil suction port 9 extending into the bottom of the oil pan; when under low temperature environment, the moisture of deposit at the oil bottom of oil pan takes place to freeze and produces the ice-slush, lower oil suction port 9 takes place to block up and when unable normal absorption because of the ice-slush, solenoid valve 7 is opened, go up oil suction port 8 and absorb the engine oil on oil pan upper strata, the engine oil on upper strata is pumped to machine and is strained module 4 afterwards, after the heating of heat exchanger 13 and the filtration of oil cleaner 12 in the machine strains module 4, engine oil is carried into each kinematic pair of engine, the normal operating of engine has been guaranteed, engine oil circulates to the oil pan after having absorbed the heat that engine burning produced and the heat that mechanical motion produced, the ice-slush in the engine oil in the messenger oil pan melts and evaporates, thereby the water content of engine oil has been reduced.
The engine oil supply system solves the problem of abnormal abrasion or damage of an engine caused by blockage of the oil collector 1 in a low-temperature environment, absorbs the engine oil on the upper layer through the auxiliary upper oil suction port 8, accelerates the temperature rise process of the engine oil by the heat generated by the heat exchanger 13 and the operation of the engine, further melts and evaporates frozen water in the engine oil, can continuously provide the engine oil for the engine, ensures the normal circulation of the engine oil, and meets the lubricating requirement during the operation of the engine.
Based on the engine oil supply system, a second aspect of the present application provides a control method of the engine oil supply system, which is used for controlling the engine oil supply system.
Fig. 6 is a flowchart of a control method of an engine oil supply system according to an embodiment of the present disclosure, and referring to fig. 6, the control method includes:
s101, collecting temperature parameters related to a vehicle;
s102, detecting whether the vehicle is in a low-temperature environment or not according to the temperature parameter;
and S103, determining a mode for sucking the engine oil based on the detection result.
Specifically, the control method of the engine oil supply system provided by the present application is implemented by an ECU controller of a vehicle, and the steps of the control method will be described in detail below.
S101, collecting temperature parameters related to the vehicle, and specifically comprising the following steps:
after the whole vehicle is electrified, the ECU controller respectively acquires the ambient temperature T1 of the vehicle and the engine oil temperature T2 of an oil pan of an engine through temperature sensors.
S102, detecting whether the vehicle is in a low-temperature environment or not according to the temperature parameters, and specifically comprising the following steps:
the ECU controller compares the detected ambient temperature T1 and the detected engine oil temperature T2 with a preset calibration temperature, and if the ambient temperature T1 or the engine oil temperature T2 is not higher than the calibration temperature, the vehicle is determined to be in a low-temperature environment; if the ambient temperature T1 or the oil temperature T2 is higher than the nominal temperature, the vehicle is not in a low temperature environment with a risk of blockage of the oil suction opening of the oil collector 1. Since vehicles of different configurations and arrangements have different parameters, the calibration temperature varies with the specific configuration and arrangement of the vehicle, and is not specifically limited herein.
The calibration temperature is provided as a reference through a large number of experimental tests. It has been found that when the ambient temperature T1 or the engine oil temperature T2 is lower than-10 ℃, the moisture mixed in the engine oil stored in the oil pan is highly likely to freeze at this low temperature to block the oil suction port. Therefore, in one possible implementation, the above-mentioned calibration temperature is set to-10 ℃, and the ECU controller judges that the vehicle is in a low-temperature environment when the collected ambient temperature T1 or the engine oil temperature T2 is not higher than-10 ℃.
S103, determining a mode of sucking the engine oil based on the detection result, and specifically comprising the following steps:
if the detection result shows that the vehicle is in a low-temperature environment, the ECU controller opens the electromagnetic valve 7, and the oil collector 1 sucks the engine oil through the lower oil suction port 9 and the upper oil suction port 8 in a mixed mode.
If the detection result shows that the vehicle is not in the low-temperature environment, the ECU controller does not open the electromagnetic valve 7, and the oil collector 1 sucks the engine oil through the lower oil suction port 9.
Under the actual working condition, when the initial detection result determines that the vehicle is in a low-temperature environment, the ECU controller opens the electromagnetic valve 7 and starts the upper oil suction port 8 to assist in sucking the engine oil. However, as the engine oil sucked by the upper oil suction port 8 enters each kinematic pair of the engine, the engine oil absorbs heat generated by combustion of the engine and heat generated by mechanical movement in the process of lubricating the engine, and when the engine oil is circularly returned to the bottom shell, the ice sand in the bottom shell can be melted and evaporated, so that the problem of blockage near the lower oil suction port 9 of the oil collector 1 is solved, the lower oil suction port 9 of the oil collector 1 can normally work, and if the lower oil suction port 9 is recovered to be normal, the electromagnetic valve 7 is closed, that is, the upper oil suction pipeline 22 is closed, and the engine oil is recovered to be sucked only by the lower oil suction port 9.
Therefore, the ECU controller is required to detect whether the oil supply system recovers to a normal working state in real time and correspondingly adjust the opening or closing of the electromagnetic valve 7 according to the acquired parameters. Specifically, the ECU controller continuously collects the oil temperature T2 and the oil pressure P in the engine.
Therefore, the control method further includes: and S104, collecting the oil temperature T2 of an oil pan of an engine of the vehicle and the oil pressure P in the engine.
Then, the ECU controller determines whether the engine oil supply system is operating normally according to the parameters collected in S104, and performs corresponding control on the vehicle based on the detection result. The control method therefore further comprises:
s105, detecting whether the engine oil supply of the vehicle works normally or not according to the engine oil temperature T2 and the engine oil pressure P;
and S106, adjusting the electromagnetic valve 7 in the engine oil supply system based on the detection result.
Specifically, if the oil temperature T2 is low, ice and sand may exist at the bottom of the oil pan; if the oil pressure P is low, the engine oil used for lubrication is low, and there may be a problem of clogging of the oil suction port or oil loss. Therefore, a lower oil temperature T2 or a lower oil pressure P indicates that the oil supply system is still not operating properly.
When the collected engine oil temperature T2 is not higher than the calibration temperature, the opening state of the electromagnetic valve 7 is kept; when the collected engine oil temperature T2 is higher than the calibration temperature and the engine oil pressure P is higher than the calibration pressure, the ECU controller judges that an engine oil supply system of an oil supply system of the vehicle is normal, and at the moment, the ECU controller controls the electromagnetic valve 7 to be closed.
Particularly, when the collected oil temperature T2 is higher than the calibration temperature and the oil pressure P is still not higher than the calibration pressure, the ECU controller judges that the oil in the oil supply system of the vehicle is less and insufficient for lubricating the engine, and at the moment, the ECU controller turns off the electromagnetic valve 7 and reports an oil fault alarm.
The present application is not particularly limited with respect to the nominal pressure P. In a large number of experimental detection processes, the engine oil supply system of the engine is not in a normal working state when the engine oil pressure P of the engine is not higher than 160 kPa. Therefore, in one possible implementation, the above-mentioned calibration pressure is set to 160kPa, and when the collected oil pressure P is not higher than 160kPa, the ECU controller determines that the oil supply system of the vehicle is not operating normally.
In this application, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. The term "plurality" means two or more unless explicitly defined otherwise.
Other embodiments of the present application will be apparent to those skilled in the art from consideration of the specification and practice of the present application 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.
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. An engine oil supply system for pumping oil stored in an oil pan and supplying the pumped oil to each of kinematic pairs of an engine, characterized in that: the engine oil supply system includes: the oil filter comprises an oil collector (1), an oil pump (2), an oil pipeline (3), a filter module (4) and an oil duct (5);
the oil collector (1) comprises an oil suction pipeline (6) and an electromagnetic valve (7);
the oil suction pipeline (6) comprises an upper oil suction port (8), a lower oil suction port (9) and an oil outlet (10), and the oil outlet (10) is respectively communicated with the upper oil suction port (8) and the lower oil suction port (9); the oil suction pipeline (6) is provided with an electromagnetic valve mounting hole (11), and the electromagnetic valve (7) is mounted in the electromagnetic valve mounting hole (11) and used for opening or closing to suck engine oil from the upper oil suction port (8); the upper oil suction port (8) and the lower oil suction port (9) both extend into the engine oil stored in the oil pan, and the position of the lower oil suction port (9) in the oil pan is closer to the bottom wall of the oil pan relative to the upper oil suction port (8);
the oil pump (2) is connected with the oil outlet (10) of the oil suction pipeline (6) and is used for pumping the oil stored in the oil pan and pumping the oil to the engine;
one end of the engine oil pipeline (3) is connected with the engine oil pump (2), and the other end of the engine oil pipeline is connected with the engine filter module (4) and used for inputting the engine oil pumped by the engine oil pump (2) into the engine filter module (4);
the oil filter module (4) comprises an oil filter (12) and a heat exchanger (13), the oil filter module (4) is communicated with the oil pipeline (3) and the oil duct (5), and the oil filter module (4) is used for processing the oil pumped by the oil pump (2) through the oil filter (12) and the heat exchanger (13) and conveying the processed oil into the oil duct (5);
the oil passage (5) comprises a main oil passage (14) and a branch oil passage (15), wherein the main oil passage (14) is communicated with each kinematic pair of the engine through the branch oil passage (15) and is used for providing the processed engine oil conveyed by the filtering module (4) to each kinematic pair of the engine.
2. The engine oil supply system according to claim 1, characterized in that the oil suction line (6) further comprises an upper oil suction line (22) and a lower oil suction line (23), the upper oil suction line (22) and the lower oil suction line (23) merging jointly into the oil outlet (10);
the pipe opening of the upper oil suction pipeline (22) far away from the oil outlet (10) is fixedly connected with the upper oil suction opening (8), and the pipe opening of the lower oil suction pipeline (23) far away from the oil outlet (10) is fixedly connected with the lower oil suction opening (9).
3. The engine oil supply system as claimed in claim 2, wherein the lower oil suction port (9) includes a lower oil suction screen (16) and a lower oil suction port housing (17);
the lower oil suction port shell (17) is of a conical structure, the lower oil suction filter screen (16) is assembled at one end, with the large diameter, of the lower oil suction port shell (17) and is connected with the pipe orifice, far away from the oil outlet (10), of the lower oil suction pipeline (23), and one end, with the small diameter, of the lower oil suction port shell (17) extends into engine oil stored in the oil pan;
the lower oil suction filter screen (16) is of an arc-shaped net structure protruding towards the lower oil suction port shell (17).
4. The engine oil supply system according to claim 3, wherein the upper oil suction opening (8) comprises an upper oil suction screen (18) and an upper oil suction opening housing (19);
the upper oil suction port shell (19) is of a cylindrical structure, one end of the upper oil suction port shell (19) is provided with the upper oil suction filter screen (18) and is connected with a pipe opening, far away from the oil outlet (10), of the upper oil suction pipeline (22), and the other end of the upper oil suction port shell (19) extends into the engine oil stored in the oil pan;
the upper oil suction filter screen (18) is of a planar net structure.
5. The oil supply system according to claim 4, characterized in that the filter module (4) comprises a filter module body (20), an oil filter (12), a pressure sensor (21), a heat exchanger (13);
wherein the oil filter (12), the heat exchanger (13) and the pressure sensor (21) are fixed on the filter module body (20), and the filter module body (20) is fixed on the cylinder block of the engine;
the oil pipeline (3), the heat exchanger (13), the oil filter (12) and the oil duct (5) are sequentially connected, so that the oil pumped by the oil pump (2) flows into the heat exchanger (13) through the oil pipeline (3) and then flows into the oil duct (5) through the oil filter (12).
6. The engine oil supply system according to claim 5, wherein the electromagnetic valve (7) is a normally closed electromagnetic valve, the electromagnetic valve (7) is controlled to be opened or closed according to the state of the engine and the state of the vehicle, in the closed state of the electromagnetic valve (7), the upper oil suction pipeline (22) is closed, the oil collector (1) sucks the engine oil through the lower oil suction port (9), in the open state of the electromagnetic valve (7), the upper oil suction pipeline (22) is opened, and the oil collector (1) sucks the engine oil through the upper oil suction port (8) and the lower oil suction port (9) in a mixed manner.
7. The oil supply system according to claim 6, characterized in that a check valve is installed in the oil line (3) for preventing the oil in the oil line (3) from flowing back to the oil pump (2) in a reverse direction.
8. A method for controlling an engine oil supply system, the method being used for controlling the engine oil supply system according to any one of claims 1 to 7, the method comprising:
collecting temperature parameters related to a vehicle;
detecting whether the vehicle is in a low-temperature environment according to the temperature parameter;
the manner of sucking the engine oil is determined based on the detection result.
9. The control method according to claim 8, wherein the determining the manner of sucking the engine oil based on the detection result includes:
and if the detection result shows that the vehicle is in the low-temperature environment, the electromagnetic valve (7) is opened, and the oil collector (1) sucks the engine oil in a mixing manner through the lower oil suction port (9) and the upper oil suction port (8).
10. The control method according to claim 8, wherein the determining the manner of sucking the engine oil based on the detection result includes:
if the detection result shows that the vehicle is not in the low-temperature environment, the electromagnetic valve (7) is not opened, and the oil collector (1) sucks the engine oil through the lower oil suction port (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211491287.3A CN115750029A (en) | 2022-11-25 | 2022-11-25 | Engine oil supply system and control method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211491287.3A CN115750029A (en) | 2022-11-25 | 2022-11-25 | Engine oil supply system and control method |
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| CN115750029A true CN115750029A (en) | 2023-03-07 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118517516A (en) * | 2024-07-22 | 2024-08-20 | 比亚迪股份有限公司 | Shell device, reduction gearbox, electric assembly and vehicle |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118517516A (en) * | 2024-07-22 | 2024-08-20 | 比亚迪股份有限公司 | Shell device, reduction gearbox, electric assembly and vehicle |
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