Engine oil supply system and control method

Abstract

The present application discloses an engine oil supply system, which is used to pump the oil stored in the oil pan to lubricate the various moving parts of the engine. The oil supply system includes: an oil collector, an oil pump, an oil pipeline, an oil filter module and an oil channel, wherein the oil collector includes an oil suction pipeline and a solenoid valve, and the oil suction pipeline includes an upper oil suction port, a lower oil suction port and an oil outlet, 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 supply system solves the problem of abnormal wear or damage of the engine caused by blockage of the oil collector in a low temperature environment, ensures the normal circulation of the engine oil, and meets the lubrication requirements when the engine is running.

Description

Technical Field

[0001] The present application relates to the technical field of vehicle engines, and in particular to an engine oil supply system and a control method. Background Art

[0002] The engine is a complex mechanical assembly structure with many moving parts inside. When the engine is working, the friction surfaces of these moving parts usually move relative to each other at a very high speed, causing friction between the metal surfaces of the moving parts. Therefore, engine oil is needed for lubrication to reduce the mechanical wear between the moving parts. Usually, the engine oil flows through the friction surfaces and is recovered and stored in the oil pan of the closed crankcase. The oil pump sucks the oil from the oil pan through the oil collector and pumps the oil into the main oil channel through the oil channel. Finally, the oil is transported to each moving part through the main oil channel for lubrication.

[0003] When the engine is running, part of the exhaust gas produced by combustion will leak into the crankcase through the piston ring, and the water, unburned fuel and combustion intermediate products carried by the exhaust gas will enter the engine oil. At this time, if it is in a low temperature environment, the water and unburned fuel in the engine oil will be affected by the low temperature and it will be more difficult to evaporate from the engine oil. When the engine is stopped in a low temperature environment, the engine no longer moves at high speed to generate heat, making it easier for water to mix into the engine oil. Therefore, in a low temperature environment, the engine oil collected in the oil pan is very likely to be mixed with water. Since the density of water is greater than that of engine oil, the engine oil mixed with water in the oil pan will show static stratification, and the engine oil with a high water content will show ice crystals or overall freezing.

[0004] Usually, a filter is installed in the oil collector extending into the oil pan. Therefore, the ice sand produced in the engine oil in a low temperature environment will cause the oil collector to be blocked, making it unable to absorb the engine oil. Then, when the engine is started, the oil pump cannot pump the oil to the various moving parts, causing abnormal wear or damage to the engine. Summary of the invention

[0005] The embodiment of the present application provides an engine oil supply system and control method to solve the problem of abnormal wear or damage to the engine caused by blockage of the oil collector of the oil supply system in a low temperature environment. The technical solution is as follows:

[0006] On the one hand, an engine oil supply system is provided, which is used to pump the oil stored in the oil pan and provide the pumped oil to each moving pair of the engine, characterized in that: the oil supply system includes: an oil collector, an oil pump, an oil pipeline, an oil filter module and an oil channel;

[0007] The invention comprises an oil suction pipeline and a solenoid valve;

[0008] The oil suction pipeline comprises an upper oil suction port, a lower oil suction port and an oil outlet, the oil outlet is communicated with the upper oil suction port and the lower oil suction port respectively; the oil suction pipeline is provided with a solenoid valve mounting hole, the solenoid valve is mounted in the solenoid valve mounting hole, and is used to open or close the suction of 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 than the upper oil suction port;

[0009] The oil pump is connected to the oil outlet of the oil suction pipeline, and is used to pump the oil stored in the oil pan and pump the oil to the engine;

[0010] One end of the oil pipeline is connected to the oil pump, and the other end is connected to the oil filter module, so as to input the oil pumped by the oil pump into the oil filter module;

[0011] The oil filter module includes an oil filter and a heat exchanger, and the oil filter module is connected to the oil pipeline and the oil channel. The oil filter module is used to process the oil pumped by the oil pump through the oil filter and the heat exchanger, and transport the processed oil into the oil channel;

[0012] The oil passage includes a main oil passage and a branch oil passage. The main oil passage is connected to each moving pair of the engine through the branch oil passage, and is used to provide the treated oil delivered by the oil filter module to each moving pair of the engine.

[0013] In a possible implementation, the oil suction pipeline further includes an upper oil suction pipeline and a lower oil suction pipeline, and the upper oil suction pipeline and the lower oil suction pipeline are jointly merged into the oil outlet;

[0014] The pipe opening of the upper oil suction pipeline away from the oil outlet is fixedly connected to the upper oil suction port, and the pipe opening of the lower oil suction pipeline away from the oil outlet is fixedly connected to the lower oil suction port.

[0015] In a possible implementation, the lower oil suction port includes a lower oil suction filter and a lower oil suction port housing;

[0016] The lower oil suction port housing is of a conical structure, and the lower oil suction filter is mounted on a large-diameter end of the lower oil suction port housing and is connected to a pipe opening of the lower oil suction pipeline away from the oil outlet, and the small-diameter end of the lower oil suction port housing extends into the engine oil stored in the oil pan;

[0017] The lower oil suction filter screen is an arc-shaped mesh structure protruding toward the lower oil suction port housing.

[0018] In a possible implementation, the upper oil suction port includes an upper oil suction filter and an upper oil suction port housing;

[0019] The upper oil suction port housing is a columnar structure, one end of the upper oil suction port housing is equipped with the upper oil suction filter and is connected to the pipe opening of the upper oil suction pipeline away from the oil outlet, and the other end of the upper oil suction port housing extends into the engine oil stored in the oil pan;

[0020] The upper oil suction filter screen is a planar mesh structure.

[0021] In a possible implementation, the oil filter module includes an oil filter module body, an oil filter, a pressure sensor, and a heat exchanger;

[0022] Wherein, the oil filter, the heat exchanger and the pressure sensor are fixed on the oil filter module body, and the oil filter module body is fixed on the cylinder block of the engine;

[0023] The oil pipeline, the heat exchanger, the oil filter and the oil channel are connected in sequence, so that the oil pumped by the oil pump flows into the heat exchanger through the oil pipeline and then flows into the oil channel through the oil filter.

[0024] In one possible implementation, the solenoid valve is a normally closed solenoid valve, and the opening or closing of the solenoid valve is controlled according to the state of the engine and the state of the vehicle. When the solenoid valve is closed, the upper oil suction pipeline is closed, and the oil collector absorbs the engine oil through the lower oil suction port. When the solenoid valve is open, the upper oil suction pipeline is opened, and the oil collector absorbs the engine oil through the upper oil suction port and the lower oil suction port.

[0025] In a possible implementation, a one-way valve is installed in the oil pipeline, and the one-way valve is used to prevent the oil in the oil pipeline from flowing back to the oil pump.

[0026] On the other hand, a method for controlling an engine oil supply system is provided, the method being used to control the engine oil supply system, the method comprising:

[0027] Collect vehicle-related temperature parameters;

[0028] Detecting whether the vehicle is in a low temperature environment according to the temperature parameter;

[0029] The method of sucking oil is determined based on the test results.

[0030] In a possible implementation, determining the method of absorbing the engine oil based on the detection result includes:

[0031] If the detection result is that the vehicle is in the low temperature environment, the solenoid valve is opened, and the oil collector absorbs the engine oil through the lower oil suction port and the upper oil suction port.

[0032] In a possible implementation, determining the method of absorbing the engine oil based on the detection result includes:

[0033] If the detection result shows that the vehicle is not in the low temperature environment, the solenoid valve is not opened, and the oil collector absorbs the engine oil through the lower oil suction port.

[0034] The beneficial effects of the technical solution provided by the embodiment of the present application are:

[0035] The present application provides an engine oil supply system and a control method. The oil supply system pumps oil from an oil pan and pumps the oil to various moving parts of the engine through the cooperation of an oil collector, an oil pump, an oil pipeline, an oil filter module and an oil channel.

[0036] The oil collector includes a lower oil suction port and an upper oil suction port controlled by a solenoid valve. The lower oil suction port is located in the oil pan closer to the bottom wall of the oil pan than the upper oil suction port, and is used to absorb the oil at the bottom of the oil pan. The upper oil suction port is used to absorb the oil in the upper layer of the oil pan. Under normal working conditions, the solenoid valve is closed, and the oil collector absorbs the oil through the lower oil suction port extending into the bottom of the oil pan. When the water deposited at the bottom of the oil in the oil pan freezes and produces ice in a low temperature environment, and the lower oil suction port is blocked by the ice and cannot be absorbed normally, the solenoid valve is opened, and the upper oil suction port absorbs the oil in the upper layer of the oil pan. Then the upper layer of the oil is pumped to the oil filter module. After being heated by the heat exchanger in the oil filter module and filtered by the oil filter, the oil is transported to each moving pair of the engine, ensuring the normal operation of the engine. After absorbing the heat generated by the engine combustion and the heat generated by the mechanical movement, the engine oil circulates to the oil pan, so that the ice in the oil in the oil pan melts and evaporates, thereby reducing the water content of the oil. This oil supply system solves the problem of abnormal engine wear or damage caused by oil collector blockage in low temperature environment. It absorbs the upper layer of oil through the auxiliary upper oil suction port, and the heat generated by the heat exchanger and engine operation accelerates the oil heating process, thereby melting and evaporating the frozen water in the oil, continuously supplying oil to the engine, ensuring the normal circulation of the engine oil and meeting the lubrication needs of the engine during operation.

[0037] It is to be understood that the foregoing general description and the following detailed description are exemplary only and are not restrictive of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 An engine oil supply system provided by an embodiment of the present application;

[0039] Figure 2 is a structural schematic diagram of an oil suction pipeline provided in an embodiment of the present application, and the oil suction pipeline is located in an oil collector of an engine oil supply system provided in an embodiment of the present application;

[0040] Figure 3 is a structural schematic diagram of an oil collector provided in an embodiment of the present application;

[0041] Figure 4 is an exploded view of an oil collector provided in an embodiment of the present application;

[0042] Figure 5 is a structural schematic diagram of an oil filter module provided in an embodiment of the present application;

[0043] Figure 6 It is a flow chart of a control method of an engine oil supply system provided in an embodiment of the present application.

[0044] The reference numerals represent:

[0045] 1- Oil collector;

[0046] 2-Oil pump;

[0047] 3-Oil pipeline;

[0048] 4- Machine filter module;

[0049] 5-Oil channel;

[0050] 6-Oil suction pipeline;

[0051] 7- Solenoid valve;

[0052] 8-Upper oil suction port;

[0053] 9-Lower oil suction port;

[0054] 10-Oil outlet;

[0055] 11- Solenoid valve installation hole;

[0056] 12-Oil filter;

[0057] 13- heat exchanger;

[0058] 14- Main oil channel;

[0059] 15- branch oil channel;

[0060] 16-lower oil suction filter;

[0061] 17-lower oil suction port housing;

[0062] 18-upper oil suction filter;

[0063] 19- upper oil suction port housing;

[0064] 20-machine filter module body;

[0065] 21-pressure sensor;

[0066] 22-upper oil suction pipeline;

[0067] 23-Lower oil suction line. DETAILED DESCRIPTION

[0068] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0069] The directional nouns involved in the embodiments of the present application, such as "upper", "lower", "side", etc., are generally represented by Figure 1 The relative relationship of the orientation shown in the figure is used as the basis, and these orientation terms are used only to more clearly describe the relationship between structures, not to describe absolute orientation. When the product is placed in different postures, the orientation may change, for example, "up" and "down" may be interchangeable.

[0070] Unless otherwise defined, all technical terms used in the embodiments of the present application have the same meanings as commonly understood by those of ordinary skill in the art.

[0071] In order to make the technical solutions and advantages of the present application more clear, the implementation methods of the present application will be further described in detail below with reference to the accompanying drawings.

[0072] There are many moving pairs inside the engine. When working, the friction surfaces (such as crankshaft journal and bearing, camshaft journal and bearing, piston ring and cylinder wall, etc.) move relative to each other at a very high speed. The friction between the metal surfaces will not only increase the power loss inside the engine, but also the heat generated by the friction can melt the surface of the parts, causing the engine to not operate normally. Therefore, in order to ensure the normal operation of the engine, the relatively moving surfaces in the engine must be lubricated. The lubrication system is a system used to lubricate the engine. When the engine is working, the lubrication system can pump the stored oil in the oil pan located at the bottom of the engine through the oil pump, and pump the oil to the surface of each part through the oil pipeline for lubrication.

[0073] Among them, an oil collector is arranged before the oil inlet of the oil pump, and the oil collector extends into the oil stored in the oil pan to absorb the oil. In addition, a filter is arranged in the oil collector to filter the oil. However, in a low temperature environment, when the engine is stopped and no longer generates heat, ice and sand usually form in the oil pan due to the mixed water, which makes it difficult for the oil collector to absorb the oil from the oil pan because the filter is blocked by the ice and sand, which will lead to the inability to lubricate the engine, causing abnormal wear or damage to the engine.

[0074] To solve the problem of oil collector blockage in the oil supply system under low temperature environment, Figures 1 to 5 As shown, a first aspect of the present application provides an engine oil supply system for pumping oil stored in an oil pan and providing the pumped oil to various moving parts of the engine.

[0075] Figure 1 The present invention provides an engine oil supply system. Figure 1 The engine oil supply system includes: an oil collector 1, an oil pump 2, an oil pipeline 3, an oil filter module 4 and an oil channel 5, wherein the oil collector 1 includes an oil suction pipeline 6 and a solenoid valve 7; the oil suction pipeline 6 includes an upper oil suction port 8, a lower oil suction port 9 and an oil outlet 10, and the oil outlet 10 is connected to the upper oil suction port 8 and the lower oil suction port 9 respectively; the oil suction pipeline 6 is provided with a solenoid valve mounting hole 11, and the solenoid valve 7 is mounted on the solenoid valve mounting hole 11, which is used to open or close the oil suction from the upper oil suction port 8; the upper oil suction port 8 and the lower oil suction port 9 both extend into the 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.

[0076] The oil pump 2 is connected to the oil outlet 10 of the oil suction pipeline 6 and is used to pump the oil stored in the oil pan and pump the oil to the engine.

[0077] One end of the oil pipeline 3 is connected to the oil pump 2 , and the other end is connected to the oil filter module 4 , so as to input the oil pumped by the oil pump 2 into the oil filter module 4 .

[0078] The oil filter module 4 includes an oil filter 12 and a heat exchanger 13 . The oil filter module 4 is connected to the oil pipeline 3 and the oil channel 5 . The oil filter module 4 is used to process the oil pumped by the oil pump 2 through the oil filter 12 and the heat exchanger 13 , and transport the processed oil into the oil channel 5 .

[0079] The oil passage 5 includes a main oil passage 14 and a branch oil passage 15 , wherein the main oil passage 14 is connected to each moving part of the engine through the branch oil passage 15 , and is used to provide the treated oil delivered by the oil filter module 4 to each moving part of the engine.

[0080] from Figure 1It can be clearly seen that the oil collector 1, oil pump 2, oil pipeline 3, oil filter module 4 and oil channel 5 of the oil supply system are connected in sequence and work together. Driven by the oil pump 2, the oil collector 1 pumps oil from the oil pan, and then the oil is pumped to the oil filter module 4 through the oil pipeline 3. After further filtration and heating by the oil filter module 4, it enters the oil channel 5 and is finally transported to the various moving parts of the engine.

[0081] Among them, the oil collector 1 in the oil supply system provided in the present application is provided with two oil suction ports, namely an upper oil suction port 8 and a lower oil suction port 9, and the upper oil suction port 8 and the lower oil suction port 9 are both facing the bottom of the oil pan and extending into the engine oil stored in the oil pan, wherein 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, for example, the lower oil suction port 9 extends to the bottom of the oil pan, and the upper oil suction port 8 is just submerged below the engine oil liquid level in the oil pan, and is closer to the upper liquid surface of the engine oil.

[0082] The oil collector 1 of the engine oil supply system provided in the present application includes an oil suction pipeline 6 and a solenoid valve 7 .

[0083] Figure 2 is a schematic diagram of the structure of an oil suction pipeline 6 provided in an embodiment of the present application, Figure 2 It can be seen that the oil suction pipeline 6 is an integrated main body, which includes two branches, 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 are jointly merged into the oil outlet 10 of the oil suction pipeline 6 .

[0084] Figure 3 A schematic diagram of the structure of an oil collector 1 provided in an embodiment of the present application, Figure 3 It can be seen that the pipe opening of the upper oil suction pipeline 22 away from the oil outlet 10 is connected to the upper oil suction port 8 , and the pipe opening of the lower oil suction pipeline 23 away from the oil outlet 10 is connected to the lower oil suction port 9 .

[0085] Combination Figure 2 and Figure 3 It can be seen that the oil suction pipeline includes: an upper oil suction pipeline 22 connected to the upper oil suction port 8 and a lower oil suction pipeline 23 connected to the lower oil suction port 9, wherein the upper oil suction port 8 and the lower oil suction port 9 are both the oil inlets of the oil suction pipeline 6, that is, the inlet of the 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 the outlet of the engine oil. Therefore, for the oil suction pipeline 6, the oil outlet 10 is connected to the upper oil suction port 8 and the lower oil suction port 9 through the upper oil suction pipeline 22 and the lower oil suction pipeline 23, respectively. Therefore, whether the engine oil is sucked from the upper oil suction port 8 or the lower oil suction port 9, it can enter the next level of the oil supply system through the oil outlet 10.

[0086] Further, Figure 4An exploded view of an oil collector 1 provided in an embodiment of the present application is shown in FIG. Figure 4 The upper oil suction port 8 includes an upper oil suction filter 18 and an upper oil suction port housing 19, wherein the upper oil suction filter 18 is a planar mesh structure; the upper oil suction port housing 19 is a columnar structure, one end of the upper oil suction port housing 19 is equipped with the upper oil suction filter 18, and is connected to the pipe mouth of the upper oil suction pipeline 22 away from the oil outlet 10, and the other end of the upper oil suction port housing 19 extends into the engine oil stored in the oil pan.

[0087] The position of the upper oil suction port 8 in the oil pan is closer to the upper liquid surface of the engine oil in the oil pan relative to the lower oil suction port 9. For example, the upper oil suction port 8 is just below the engine oil level in the oil pan and is closer to the upper liquid surface of the engine oil.

[0088] Therefore, the upper oil suction port 8 is used to absorb the upper layer of oil. In order to ensure that the upper oil suction port 8 can be located closer to the upper layer of the oil in the oil, as shown in FIG. Figures 2 to 4 As shown in the figure, in a possible implementation, the configuration of the upper oil suction line 22 can be a combination of a straight pipe and an elbow. When installed, the extension direction of the straight pipe of the upper oil suction line 22 is kept parallel to the bottom wall of the oil pan; the length of the elbow extending toward the bottom of the oil pan can be designed accordingly 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 to the elbow of the upper oil suction line 22 can just be submerged below the oil level.

[0089] from Figure 4 It can also be seen that the lower oil suction port 9 includes a lower oil suction filter 16 and a lower oil suction port housing 17, wherein the lower oil suction filter 16 is an arc-shaped mesh structure protruding toward the lower oil suction port housing 17; the lower oil suction port housing 17 is a conical structure, see Figure 4 The large-diameter end of the lower oil suction port housing 17 is equipped with a lower oil suction filter 16 and is connected to the pipe mouth of the lower oil suction pipeline 23 away from the oil outlet 10. The small-diameter end of the lower oil suction port housing 17 extends into the engine oil stored in the oil pan and is the entrance for the engine oil to enter the oil collector 1.

[0090] The position of the lower oil suction port 9 in the oil pan is closer to the bottom wall of the oil pan than the upper oil suction port 8 . For example, the lower oil suction port 9 extends to the bottom of the oil pan.

[0091] Therefore, the lower oil suction port 9 is used to absorb the oil from the bottom layer. However, impurities are easily accumulated at the bottom of the oil pan. In order to ensure that the lower oil suction port 9 can effectively absorb the oil from the bottom of the oil pan, on the one hand, the lower oil suction port housing 17 is configured as an inverted cone structure, and the small diameter end of the inverted cone structure extends into the bottom of the oil pan. The port has a smaller diameter, so it can avoid larger impurities, thereby preventing the lower oil suction port 9 from being blocked by larger impurities. On the other hand, the lower oil suction filter 16 in the lower oil suction port 9 is configured as an arc-shaped mesh structure protruding from the lower oil suction port housing 17 to increase the contact area between the filter and the oil, reduce the resistance of intercepting the oil passing through the filter, and thereby reduce the probability of the filter being blocked, further enabling the lower oil suction port 9 to effectively absorb the oil from the oil pan.

[0092] like Figures 2 to 4 As shown, the oil suction pipeline 6 is also provided with a solenoid valve mounting hole 11, and the solenoid valve mounting hole 11 is provided on the upper oil suction pipeline 22 of the oil suction pipeline 6, see Figure 1 The solenoid valve 7 is installed on the solenoid valve installation hole 11, so the solenoid valve 7 is used to control the on-off of the upper oil suction pipeline 22, that is, when the solenoid valve 7 is opened, the upper oil suction pipeline 22 is a passage, and the oil collector 1 can absorb the engine oil from the oil pan through the upper oil suction port 8; when the solenoid valve 7 is closed, the upper oil suction pipeline 22 is an open circuit, and the upper oil suction port 8 does not absorb the engine oil.

[0093] The solenoid valve 7 is a normally closed solenoid valve, that is, in a normal state, the solenoid valve 7 is in a closed state, in which the upper oil suction port 8 does not absorb the oil, and the oil collector 1 only absorbs the oil through the lower oil suction port 9. The normal state refers to a state in which the engine can operate normally, for example, the vehicle and the engine are at normal temperature.

[0094] In contrast, the solenoid valve 7 is opened when the vehicle or the engine is in a low temperature environment. In this low temperature environment, the lower oil suction port 9 of the oil collector 1 is prejudged to be unable to normally absorb the oil at the bottom of the oil pan, so the solenoid valve 7 is opened to connect the upper oil suction line 22, and the oil collector 1 starts the upper oil suction port 8 to absorb the oil, thereby ensuring the lubrication required for the operation of the engine.

[0095] In addition, the determination of the state of the vehicle or the engine, and the control of the switch state of the solenoid valve 7 are all implemented by the ECU (Electronic Control Unit) controller of the vehicle.

[0096] After the vehicle is powered on, the ambient temperature T1 of the vehicle and the oil temperature T2 of the oil pan of the engine are collected. The ECU controller detects whether the vehicle is in a low temperature environment based on the collected temperature parameters and controls the solenoid valve 7 accordingly.

[0097] When the collected temperature parameter is lower than the calibrated temperature, the ECU controller determines that the vehicle is in a low temperature environment, and controls the solenoid valve 7 to open, so as to start the upper oil suction port 8 to absorb the engine oil.

[0098] As the engine oil sucked from the upper oil suction port 8 enters the various moving parts of the engine, the engine oil absorbs the heat from the engine combustion and the heat generated by the mechanical movement during the process of lubricating the engine. When it circulates back to the oil pan, the ice in the oil pan can be melted and evaporated, thereby relieving the blockage problem near the lower oil suction port of the oil collector 1, so that the lower oil suction port 9 of the oil collector 1 can work normally. If the lower oil suction port 9 returns to normal, the solenoid valve 7 is closed, that is, the upper oil suction pipeline 22 is shut off, and the engine oil is sucked only by the lower oil suction port 9.

[0099] Therefore, the ECU controller is required to detect in real time whether the oil supply system has resumed normal working state, and adjust the opening or closing of the solenoid valve 7 accordingly according to the collected parameters. Specifically, the ECU controller continuously collects the oil temperature T2 and the oil pressure P in the engine. If the oil temperature T2 is low, there may be ice at the bottom of the oil pan; if the oil pressure P is low, there is less oil for lubrication in the engine, and there may be problems such as oil suction port blockage or oil shortage. Therefore, low oil temperature T2 or low oil pressure P indicates that the oil supply system is still not working properly.

[0100] When the collected oil temperature T2 is still not higher than the above-mentioned calibration temperature, the solenoid valve 7 is kept open; when the collected oil temperature T2 is higher than the above-mentioned calibration temperature, and the oil pressure P is higher than the calibration pressure, the ECU controller determines that the engine oil supply system of the vehicle's oil supply system is normal, and the ECU controller controls the solenoid valve 7 to close. When the collected oil temperature T2 is higher than the above-mentioned calibration temperature, and the oil pressure P is still not higher than the calibration pressure, the ECU controller determines that the oil in the oil supply system of the vehicle is insufficient for engine lubrication, and the ECU controller shuts off the solenoid valve 7 and broadcasts an oil fault alarm.

[0101] After the oil collector 1 absorbs the engine oil, the engine oil is transported into the oil filter module 4 through the oil pipeline 3 under the drive of the oil pump 2.

[0102] See also Figure 1 One end of the oil pipeline 3 is connected to the oil pump 2, and the other end is connected to the oil filter module 4, so as to input the oil pumped by the oil pump 2 into the oil filter module 4. In order to prevent the oil from flowing back in the oil pipeline 3, a one-way valve is installed in the oil pipeline 3, and the one-way valve is used to prevent the oil in the oil pipeline 3 from flowing back to the oil pump 2.

[0103] The oil pipeline 3 delivers the oil to the oil filter module 4, which further filters the oil to prevent fine impurities from entering the moving pair of the engine and causing abnormal wear of the moving pair. In addition, the oil filter module 4 can also heat the oil.

[0104] Figure 5 This is a schematic diagram of the structure of an oil filter module 4 provided in an embodiment of the present application. Figure 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. The pressure sensor 21, the oil filter 12 and the heat exchanger 13 are fixed to the oil filter module body 20, and the oil filter module body 20 is fixed to the engine cylinder block by bolts. The oil pipeline 3, the heat exchanger 13, the oil filter 12 and the oil passage 5 are connected in sequence, so that the oil pumped by the oil pump 2 enters the heat exchanger 13 through the oil pipeline 3, then enters the oil filter 12, and finally flows into the oil passage 5.

[0105] The two ends of the heat exchanger 13 are connected to the oil filter 12 and the oil pipeline 3 respectively. The oil first enters the heat exchanger 13 through the oil pipeline 3, and enters the oil filter 12 after being heated by the heat exchanger 13. The heating function of the heat exchanger 13 can be realized by integrating a heating module in the heat exchanger 13; or the heat exchange of the oil can be realized by the cooling water circulating in the engine. During the small circulation in the engine, the cooling water absorbs the heat generated by the operation of the engine and heats up quickly. Therefore, after entering the heat exchanger 13, it can exchange heat with the oil at a lower temperature. The oil is heated by the heat exchanger 13, the oil temperature rises, and the ice in the oil pan melts, further avoiding the blockage of the oil suction port of the oil collector 1, so that the oil supply system of the engine can work normally.

[0106] The engine oil heated by the heat exchanger 13 enters the engine oil filter 12, which further filters impurities in the engine oil to prevent fine impurities from entering the moving parts of the engine. After being heated and filtered by the oil filter module 4, the engine oil enters the oil passage 5, which includes a main oil passage 14 and a branch oil passage 15. The main oil passage 14 is connected to each moving part of the engine through the branch oil passage 15, and is used to distribute the treated engine oil to each moving part of the engine.

[0107] A pressure sensor 21 is also fixed on the oil filter module body 20. The sensor is used to detect the oil pressure P in the engine. The vehicle's ECU controller collects the oil pressure P in real time and determines whether the oil supply system is working normally based on the parameter.

[0108] In summary, the present application provides an engine oil supply system, which pumps oil from the oil pan through the mutual cooperation of an oil collector 1, an oil pump 2, an oil pipeline 3, an oil filter module 4 and an oil channel 5, and pumps the oil 2 to each moving part of the engine.

[0109] Among them, the oil collector 1 includes a lower oil suction port 9 and an upper oil suction port 8 whose switch is controlled by a solenoid valve 7. 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, and is used to absorb the oil at the bottom of the oil pan. The upper oil suction port 8 is used to absorb the oil in the upper layer of the oil pan. Under normal working conditions, the solenoid valve 7 is closed, and the oil collector 1 absorbs the engine oil through the lower oil suction port 9 extending into the bottom of the oil pan; when in a low temperature environment, the water deposited at the bottom of the engine oil in the oil pan freezes to produce ice sand, and the lower oil suction port 9 is blocked by the ice sand and cannot be normally absorbed, the solenoid valve 7 opens, and the upper oil suction port 8 absorbs the engine oil in the upper layer of the oil pan, and then the upper layer of the engine oil is pumped to the oil filter module 4. After being heated by the heat exchanger 13 in the oil filter module 4 and filtered by the oil filter 12, the engine oil is transported into the various moving parts of the engine, ensuring the normal operation of the engine. After absorbing the heat generated by the engine combustion and the heat generated by the mechanical movement, the engine oil circulates to the oil pan, causing the ice sand in the engine oil in the oil pan to melt and evaporate, thereby reducing the water content of the engine oil.

[0110] The oil supply system solves the problem of abnormal wear or damage of the engine caused by blockage of the oil collector 1 in a low-temperature environment. The upper layer of oil is absorbed through the auxiliary upper oil suction port 8, and the heat generated by the cooperative heat exchanger 13 and the engine operation accelerates the heating process of the oil, thereby melting and evaporating the frozen water in the oil. The oil can be continuously supplied to the engine, ensuring the normal circulation of the engine oil and meeting the lubrication requirements of the engine during operation.

[0111] Based on the above-mentioned engine oil supply system, a second aspect of the present application provides a control method for an engine oil supply system, which is used to control the above-mentioned oil supply system.

[0112] Figure 6 This is a flow chart of a control method for an engine oil supply system provided in an embodiment of the present application, see Figure 6 , the control method comprises:

[0113] S101, collecting temperature parameters related to the vehicle;

[0114] S102, detecting whether the vehicle is in a low temperature environment according to the temperature parameter;

[0115] S103: Determine a method for absorbing engine oil based on the detection result.

[0116] Specifically, the control method of the engine oil supply system provided in the present application is implemented by the vehicle's ECU controller, and the steps of the above control method will be described in detail below.

[0117] S101, collecting temperature parameters related to the vehicle, including:

[0118] After the vehicle is powered on, the ECU controller collects the vehicle's ambient temperature T1 and the engine oil pan oil temperature T2 through temperature sensors.

[0119] S102, detecting whether the vehicle is in a low temperature environment according to the temperature parameter, specifically comprising:

[0120] The ECU controller compares the detected ambient temperature T1 and oil temperature T2 with the pre-set calibration temperature. If the ambient temperature T1 or the oil temperature T2 is not higher than the calibration temperature, it is determined that the vehicle is in a low temperature environment; if the ambient temperature T1 or the oil temperature T2 is higher than the calibration temperature, the vehicle is not in a low temperature environment where there is a risk of clogging the oil suction port of the oil collector 1. Since vehicles of different structures and settings have different parameters, the above calibration temperature changes with the specific structure and setting of the vehicle, and this application does not make any special limitation on the calibration temperature.

[0121] This application provides a calibration temperature as a reference after a large number of experimental tests. Studies have found that when the ambient temperature T1 or the oil temperature T2 is lower than -10°C, the water mixed in the oil stored in the oil pan is very likely to freeze at this low temperature and block the oil suction port. Therefore, in a possible implementation, the above calibration temperature is set to -10°C. When the collected ambient temperature T1 or oil temperature T2 is not higher than -10°C, the ECU controller determines that the vehicle is in a low temperature environment.

[0122] S103, determining a method for absorbing engine oil based on the detection result, specifically including:

[0123] If the detection result shows that the vehicle is in a low temperature environment, the ECU controller opens the solenoid valve 7, and the oil collector 1 absorbs the oil through the lower oil suction port 9 and the upper oil suction port 8.

[0124] If the detection result shows that the vehicle is not in a low temperature environment, the ECU controller does not open the solenoid valve 7, and the oil collector 1 absorbs the engine oil through the lower oil suction port 9.

[0125] Under actual working conditions, when the initial detection results determine that the vehicle is in a low temperature environment, the ECU controller opens the solenoid 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 the various moving parts of the engine, the engine oil absorbs the heat of engine combustion and the heat generated by mechanical movement in the process of lubricating the engine. When it is circulated back to the oil pan, the ice in the oil pan can be melted and evaporated, thereby relieving the blockage problem near the lower oil suction port 9 of the oil collector 1, so that the lower oil suction port 9 of the oil collector 1 can work normally. If the lower oil suction port 9 returns to normal, the solenoid valve 7 is closed, that is, the upper oil suction pipeline 22 is shut off, and the engine oil is sucked only by the lower oil suction port 9.

[0126] Therefore, the ECU controller is required to detect in real time whether the oil supply system has resumed normal working state, and adjust the opening or closing of the solenoid valve 7 accordingly according to the collected parameters. Specifically, the ECU controller continuously collects the oil temperature T2 and the oil pressure P in the engine.

[0127] Therefore, the above control method further includes: S104, collecting the oil temperature T2 of the oil pan of the engine of the vehicle and the oil pressure P in the engine.

[0128] Next, the ECU controller determines whether the engine oil supply system is working properly according to the parameters collected in S104, and performs corresponding control on the vehicle based on the detection result. Therefore, the control method further includes:

[0129] S105, detecting whether the oil supply of the vehicle is working normally according to the oil temperature T2 and the oil pressure P;

[0130] S106, adjusting the solenoid valve 7 in the engine oil supply system based on the detection result.

[0131] Specifically, if the oil temperature T2 is low, there may be ice at the bottom of the oil pan; if the oil pressure P is low, there is less oil in the engine for lubrication, and there may be a problem of oil suction port blockage or oil shortage. Therefore, low oil temperature T2 or low oil pressure P indicates that the oil supply system is still not working properly.

[0132] When the collected oil temperature T2 is still not higher than the above-mentioned calibration temperature, the solenoid valve 7 is kept in the open state; when the collected oil temperature T2 is higher than the above-mentioned calibration temperature, and the oil pressure P is higher than the calibration pressure, the ECU controller determines that the engine fuel supply system of the vehicle's fuel supply system is normal, and the ECU controller controls the solenoid valve 7 to close.

[0133] In particular, when the collected oil temperature T2 is higher than the above-mentioned calibration temperature, and the oil pressure P is still not higher than the calibration pressure, the ECU controller determines that the oil in the fuel supply system of the vehicle is insufficient for engine lubrication. At this time, the ECU controller turns off the solenoid valve 7 and broadcasts the oil fault alarm.

[0134] The present application does not make any special limitation on the calibration pressure P. The present application has found in a large number of experimental tests that when the engine oil pressure P is not higher than 160 kPa, it indicates that the engine oil supply system is not in a normal working state. Therefore, in a possible implementation, the calibration pressure is set to 160 kPa, and when the collected oil pressure P is not higher than 160 kPa, the ECU controller determines that the vehicle's oil supply system is not working properly.

[0135] In the present application, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance. The term "plurality" refers to two or more than two, unless otherwise clearly defined.

[0136] Those skilled in the art will readily appreciate other embodiments of the present application after considering the specification and practicing the present application disclosed herein. The present application is intended to cover any variations, uses or adaptations of the present application, which follow the general principles of the present application and include common knowledge or customary techniques in the art that are not disclosed in the present application. The specification and examples are intended to be exemplary only.

[0137] It should be understood that the present application is not limited to the precise structures that have been 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 present application is limited only by the appended claims.

Claims

1. An engine oil supply system, used for pumping the oil stored in the oil pan and supplying the pumped oil to each moving part of the engine, characterized in that: The engine oil supply system comprises: an oil collector (1), an engine oil pump (2), an engine oil pipeline (3), an oil filter module (4) and an oil channel (5); The oil collector (1) comprises an oil suction pipeline (6) and a solenoid valve (7); The oil suction pipeline (6) comprises an upper oil suction pipeline (22), a lower oil suction pipeline (23), an upper oil suction port (8), a lower oil suction port (9) and an oil outlet (10); the upper oil suction pipeline (22) and the lower oil suction pipeline (23) are both connected to the oil outlet (10); the pipe end of the upper oil suction pipeline (22) away from the oil outlet (10) is fixedly connected to the upper oil suction port (8); the pipe end of the lower oil suction pipeline (23) away from the oil outlet (10) is fixedly connected to the lower oil suction port (9); The oil outlet (10) is communicated with the upper oil suction port (8) and the lower oil suction port (9) respectively; the oil suction pipeline (6) is provided with a solenoid valve mounting hole (11), and the solenoid valve (7) is mounted in the solenoid valve mounting hole (11) for opening or closing the suction of 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 of the oil pan than the upper oil suction port (8). The lower oil suction port (9) comprises a lower oil suction filter (16) and a lower oil suction port housing (17); the lower oil suction port housing (17) is of a conical structure; the lower oil suction filter (16) is mounted on a larger diameter end of the lower oil suction port housing (17) and is connected to a pipe opening of the lower oil suction pipeline (23) away from the oil outlet (10); the lower oil suction filter (16) extends into the engine oil stored in the oil pan; the lower oil suction filter (16) is disposed toward the lower oil suction port housing (17). 7) a raised arc-shaped mesh structure; the upper oil suction port (8) comprises an upper oil suction filter (18) and an upper oil suction port housing (19); the upper oil suction port housing (19) is a columnar structure, one end of the upper oil suction port housing (19) is equipped with the upper oil suction filter (18) and is connected to the pipe opening of the upper oil suction pipeline (22) away from the oil outlet (10), and the other end of the upper oil suction port housing (19) extends into the engine oil stored in the oil pan; the upper oil suction filter (18) is a planar mesh structure; The oil pump (2) is connected to the oil outlet (10) of the oil suction pipeline (6) and is used to pump the oil stored in the oil pan and pump the oil to the engine; One end of the oil pipeline (3) is connected to the oil pump (2), and the other end is connected to the oil filter module (4), so as to input the oil pumped by the oil pump (2) into the oil filter module (4); The oil filter module (4) comprises an oil filter module body (20), an oil filter (12), a pressure sensor (21) and a heat exchanger (13), wherein the oil filter (12), the heat exchanger (13) and the pressure sensor (21) are fixed on the oil filter module body (20), and the oil filter module body (20) is fixed on the cylinder block of the engine; and the oil filter module (4) is connected to the oil pipeline (3) and the oil channel (5), and the oil filter module (4) ) is used to process the oil pumped by the oil pump (2) through the oil filter (12) and the heat exchanger (13), and to transport the processed oil into the oil passage (5); wherein the oil pipeline (3), the heat exchanger (13), the oil filter (12) and the oil passage (5) are connected in sequence, 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 passage (5) through the oil filter (12); The oil passage (5) comprises a main oil passage (14) and a branch oil passage (15); the main oil passage (14) is connected to each moving pair of the engine through the branch oil passage (15) and is used to provide the treated oil delivered by the oil filter module (4) to each moving pair of the engine.

2. The engine oil supply system according to claim 1, characterized in that: The solenoid valve (7) is a normally closed solenoid valve, and the opening or closing of the solenoid valve (7) is controlled according to the state of the engine and the state of the vehicle. When the solenoid valve (7) is in the closed state, the upper oil suction pipeline (22) is closed, and the oil collector (1) absorbs the engine oil through the lower oil suction port (9). When the solenoid valve (7) is in the open state, the upper oil suction pipeline (22) is opened, and the oil collector (1) absorbs the engine oil through the upper oil suction port (8) and the lower oil suction port (9) in a mixed manner.

3. The engine oil supply system according to claim 2, characterized in that: A one-way valve is installed in the oil pipeline (3), and the one-way valve is used to prevent the oil in the oil pipeline (3) from flowing back to the oil pump (2).

4. A control method for an engine oil supply system, characterized in that: The method is used to control the engine oil supply system according to any one of claims 1 to 3, and the method comprises: Collect temperature parameters related to the vehicle; Detecting whether the vehicle is in a low temperature environment according to the temperature parameter; The method of sucking oil is determined based on the test results.

5. The control method according to claim 4, characterized in that: The method of determining the method of absorbing the engine oil based on the detection result includes: If the detection result shows that the vehicle is in the low temperature environment, the solenoid valve (7) is opened, and the oil collector (1) absorbs the engine oil through the lower oil suction port (9) and the upper oil suction port (8).

6. The control method according to claim 4, characterized in that: The method of determining the method of absorbing 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 solenoid valve (7) is not opened, and the oil collector (1) absorbs the engine oil through the lower oil suction port (9).

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