Cooling and lubricating system for engine and vehicle

Abstract

The invention relates to the technical field of vehicle cooling systems, in particular to a cooling and lubricating system for an engine and a vehicle. The electronic oil pump is communicated with the oil pan; the main oil duct is communicated with the electronic oil pump, and the main oil duct is communicated with an oil using assembly; the air cylinder is communicated with the electronic oil pump, the air cylinder is communicated with a heat exchange assembly, and the heat exchange assembly is communicated with an oil pan; the pressure sensor is arranged in the main oil duct; the temperature sensor is arranged at an oil outlet of the air cylinder; the rotating speed of the electronic oil pump can be adjusted according to detection results of the pressure sensor and the temperature sensor. The cooling and lubricating system for the engine and the vehicle can solve the problem that an existing cooling system is difficult to meet the requirements for efficient heat dissipation and compact structural design.

Description

Technical Field

[0001] The present application relates to the technical field of vehicle cooling systems, and in particular to a cooling and lubrication system for an engine and a vehicle. Background Art

[0002] As engine technology continues to advance, its power and heat load have also increased significantly. Traditional air-cooled and water-cooled engine cooling systems can no longer meet the requirements of efficient heat dissipation and compact structural design in certain specific application scenarios.

[0003] For example, in high-performance racing engines and special vehicle engines with extremely strict space requirements, a more efficient and compact cooling system is urgently needed. Existing cooling systems generally have problems such as insufficient cooling efficiency, large size, and heavy weight. These problems not only restrict the overall performance of the engine, but also have an adverse effect on the power and economy of the vehicle. Summary of the invention

[0004] In view of this, the purpose of the present application is to provide a cooling and lubrication system and a vehicle for an engine, so as to solve the problem that the existing cooling system is difficult to meet the requirements of efficient heat dissipation and compact structural design.

[0005] According to a first aspect of the present invention, a cooling and lubrication system for an engine is provided, wherein the cooling and lubrication system for the engine comprises: an oil pan; an electronic oil pump connected to the oil pan; a main oil channel connected to the electronic oil pump, the main oil channel connected to an oil-using component; a cylinder connected to the electronic oil pump, the cylinder connected to a heat exchange component, and the heat exchange component connected to the oil pan; a pressure sensor arranged in the main oil channel; and a temperature sensor arranged at the oil outlet of the cylinder; the electronic oil pump can adjust the rotation speed according to the detection results of the pressure sensor and the temperature sensor.

[0006] Preferably, the oil-using components include: an exhaust-side camshaft, connected to the main oil channel through the cylinder head exhaust-side lubricating oil channel; an exhaust-side variable timing valve, connected to the main oil channel through the cylinder head exhaust-side lubricating oil channel; an intake-side camshaft, connected to the main oil channel through the cylinder head intake-side lubricating oil channel; an intake-side variable timing valve, connected to the main oil channel through the cylinder head intake-side lubricating oil channel; a fuel pump, connected to the main oil channel through the cylinder head intake-side lubricating oil channel; and a hydraulic tappet, the cylinder head exhaust-side lubricating oil channel and the cylinder head intake-side lubricating oil channel are respectively connected to the hydraulic tappet.

[0007] Preferably, the oil-using component includes a plurality of piston cooling nozzles, the plurality of piston cooling nozzles are connected to a piston cooling oil passage, and the main oil passage is connected to the piston cooling oil passage and the cylinder head exhaust side lubricating oil passage and the cylinder head intake side lubricating oil passage through a proportional three-way valve.

[0008] Preferably, the oil-using component includes: a bearing portion, the bearing portion includes a plurality of main bearings and a plurality of connecting rod bearings, the main oil passage is connected to the plurality of main bearings, and the plurality of connecting rod bearings are respectively connected to the plurality of main bearings; and a supercharger, the main oil passage is connected to the supercharger.

[0009] Preferably, the cylinder comprises a cylinder oil jacket and a cylinder head oil jacket, the cylinder oil jacket is connected to the electronic oil pump, and the cylinder head oil jacket is connected to the cylinder oil jacket.

[0010] Preferably, the heat exchange component comprises: a radiator connected to a single-valve thermostat, which is connected to the cylinder head oil jacket; and a heater core connected to an EGR cooler, which is connected to the cylinder head oil jacket.

[0011] Preferably, the cooling and lubrication system for the engine also includes an expansion pot, the cylinder head oil jacket is connected to the expansion pot, the radiator is connected to the expansion pot, the EGR cooler is connected to the expansion pot, and the expansion pot is connected to the oil pan.

[0012] Preferably, a filter is provided in the oil pan, the electronic oil pump is connected to the filter, and the main oil channel is connected to the electronic oil pump through an oil filter.

[0013] Preferably, when the detection result of the pressure sensor is lower than the preset pressure range, the speed of the electronic oil pump increases, and when the detection result of the pressure sensor is higher than the preset pressure range, the speed of the electronic oil pump decreases; when the detection result of the temperature sensor is lower than the preset temperature range, the speed of the electronic oil pump decreases, and when the detection result of the temperature sensor is higher than the preset temperature range, the speed of the electronic oil pump increases.

[0014] According to a second aspect of the present invention, there is provided a vehicle, wherein the vehicle comprises a cooling lubrication system for an engine as described above.

[0015] The cooling and lubricating system and vehicle for the engine of the embodiment of the present invention combine the cooling system and the lubricating system in one system, realize the function of pressurizing the cooling medium, and save the layout space. In addition, a pressure sensor and a temperature sensor are respectively provided at the main oil channel and the cylinder, so that the electronic oil pump can adjust the speed according to the detection results of the pressure sensor and the temperature sensor, which is convenient for testing to accurately control the pressure and temperature in the system and realize efficient heat dissipation. This can effectively solve the problem that the existing cooling system is difficult to meet the requirements of efficient heat dissipation and compact structural design.

[0016] In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, preferred embodiments are specifically cited below and described in detail with reference to the attached drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 is a schematic diagram of a cooling and lubrication system for an engine according to the present invention.

[0019] Reference numerals: 1-oil pan; 10-filter; 100-oil filter; 2-electronic oil pump; 3-main oil channel; 31-lubricating oil channel on the exhaust side of the cylinder head; 32-lubricating oil channel on the intake side of the cylinder head; 33-piston cooling oil channel; 34-supercharger; 35-proportional three-way valve; 300-fuel pump; 301-exhaust side camshaft; 302-exhaust side variable timing valve; 303-intake side camshaft; 30 4-intake side variable timing valve; 305-hydraulic tappet; 306-piston cooling nozzle; 307-piston; 308-main bearing; 309-connecting rod bearing; 4-cylinder; 401-cylinder oil jacket; 402-cylinder head oil jacket; 41-radiator; 410-single valve thermostat; 42-heater core; 420-EGR cooler; 43-expansion pot; 51-pressure sensor; 52-temperature sensor. DETAILED DESCRIPTION

[0020] The following specific embodiments are provided to help the reader obtain a comprehensive understanding of the methods, devices and / or systems described herein. However, after understanding the disclosure of the present application, various changes, modifications and equivalents of the methods, devices and / or systems described herein will be apparent. For example, the order of operations described herein is merely an example, and is not limited to the order set forth herein, but in addition to the operations that must occur in a particular order, changes that will be apparent after understanding the disclosure of the present application may be made. In addition, in order to improve clarity and brevity, descriptions of features known in the art may be omitted.

[0021] The features described herein may be implemented in different forms and should not be interpreted as being limited to the examples described herein. Rather, the examples described herein have been provided only to illustrate some of the many possible ways of implementing the methods, devices and / or systems described herein that will be apparent after understanding the disclosure of the present application.

[0022] Throughout the specification, when an element (such as a layer, a region, or a substrate) is described as being “on”, “connected to”, “bound to”, “over”, or “covering” another element, it may be directly “on”, “connected to”, “bound to”, “over”, or “covering” another element, or one or more other elements may be present between them. In contrast, when an element is described as being “directly on”, “directly connected to”, “directly bound to”, “directly over”, or “directly covering” another element, there may be no other elements present between them.

[0023] As used herein, the term "and / or" includes any one of the associated listed items and any combination of any two or more items.

[0024] Although terms such as "first," "second," and "third" may be used herein to describe various members, components, regions, layers, or portions, these members, components, regions, layers, or portions are not limited by these terms. Rather, these terms are only used to distinguish one member, component, region, layer, or portion from another member, component, region, layer, or portion. Therefore, without departing from the teachings of the examples described herein, the first member, component, region, layer, or portion referred to may also be referred to as the second member, component, region, layer, or portion.

[0025] For ease of description, spatial relational terms such as "above", "upper", "below", and "lower" may be used herein to describe the relationship of one element to another element as shown in the accompanying drawings. Such spatial relational terms are intended to include different orientations of the device in use or operation in addition to the orientation depicted in the accompanying drawings. For example, if the device in the accompanying drawings is turned over, an element described as being "above" or "upper" relative to another element will subsequently be "below" or "lower" relative to the other element. Therefore, the term "above" includes both "above" and "below" orientations depending on the spatial orientation of the device. The device may also be positioned in other ways (e.g., rotated 90 degrees or in other orientations), and the spatial relational terms used herein will be interpreted accordingly.

[0026] The terms used herein are only used to describe various examples and are not used to limit the examples. Unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. The terms "include", "comprising" and "having" list the existence of the stated features, quantities, operations, components, elements and / or their combinations, but do not exclude the existence or addition of one or more other features, quantities, operations, components, elements and / or their combinations.

[0027] Variations in the shapes shown in the drawings may occur due to manufacturing techniques and / or tolerances. Therefore, the examples described herein are not limited to the specific shapes shown in the drawings but include variations in shapes that occur during manufacturing.

[0028] The features of the examples described herein may be combined in various ways that will be apparent after understanding the disclosure of the present application. In addition, although the examples described herein have various configurations, other configurations are possible as will be apparent after understanding the disclosure of the present application.

[0029] like Figure 1 As shown, according to a first aspect of the present invention, a cooling and lubricating system for an engine is provided, the cooling and lubricating system for the engine comprising an oil pan 1, an electronic oil pump 2, a main oil gallery 3, a cylinder 4, a pressure sensor 51 and a temperature sensor 52.

[0030] In the following description, reference will be made to Figure 1 The specific structure of the above components of the cooling and lubrication system for the engine and the connection relationship of the above components are specifically described.

[0031] like Figure 1As shown, in the embodiment, the electronic oil pump 2 can be connected to the oil pan 1 to supply oil to the main oil channel 3 and the cylinder 4. The main oil channel 3 can be connected to the electronic oil pump 2, and the main oil channel 3 is connected to the oil-using component, and the cooling oil can flow to the oil-using component through the main oil channel 3. The cylinder 4 can be connected to the electronic oil pump 2. The cylinder 4 can be connected to the heat exchange component, and the heat exchange component can be connected to the oil pan 1 to achieve heat exchange of the cooling oil. The pressure sensor 51 can be arranged in the main oil channel 3 to detect the oil pressure in the main oil channel 3. The temperature sensor 52 can be arranged at the oil outlet of the cylinder 4 to detect the temperature of the cooling oil discharged from the cylinder 4. In this way, the cooling system and the lubrication system can be combined together, the function of pressurizing the cooling medium is realized, the entire heat dissipation and lubrication cycle is completed, and the layout space is greatly saved. In addition, the electronic oil pump 2 can adjust the speed according to the detection results of the pressure sensor 51 and the temperature sensor 52, which is easy to accurately control the pressure and temperature in the system and achieve efficient heat dissipation.

[0032] Preferably, Figure 1 As shown, in the embodiment, a filter 10 may be provided in the oil pan 1 for filtering the oil to remove impurities in the cooling oil. The electronic oil pump 2 may be connected to the filter 10. The cooling lubrication system for the engine may also include an oil filter 100, the electronic oil pump 2 may be connected to the oil filter 100, and the oil filter 100 is connected to the main oil circuit, thereby further filtering the cooling oil entering the main oil channel 3 to prevent impurities from damaging precision components.

[0033] Preferably, Figure 1As shown, in the embodiment, the oil-using assembly may include an exhaust-side camshaft 301, an exhaust-side variable timing valve 302, an intake-side camshaft 303, an intake-side variable timing valve 304, a fuel pump 300, and a hydraulic tappet 305. Specifically, the main oil gallery 3 may be connected to the cylinder head exhaust-side lubricating oil gallery 31 and the cylinder head intake-side lubricating oil gallery 32. The exhaust-side camshaft 301 may be connected to the main oil gallery 3 through the cylinder head exhaust-side lubricating oil gallery 31. The exhaust-side variable timing valve 302 may be connected to the main oil gallery 3 through the cylinder head exhaust-side lubricating oil gallery 31. The intake-side camshaft 303 may be connected to the main oil gallery 3 through the cylinder head intake-side lubricating oil gallery 32. The intake-side variable timing valve 304 may be connected to the main oil gallery 3 through the cylinder head intake-side lubricating oil gallery 32. The fuel pump 300 may be connected to the main oil gallery 3 through the cylinder head intake-side lubricating oil gallery 32. In addition, the cylinder head exhaust side lubricating oil passage 31 and the cylinder head intake side lubricating oil passage 32 can both be connected to the hydraulic tappet 305. Thus, the exhaust side camshaft 301, the exhaust side variable timing valve 302, the intake side camshaft 303, the intake side variable timing valve 304, the fuel pump 300 and the hydraulic tappet 305 are lubricated, driven and cooled.

[0034] More preferably, Figure 1 As shown, in an embodiment, the oil-using component may further include a plurality of piston cooling nozzles 306. Specifically, the main oil passage 3 may be connected to the piston cooling oil passage 33 and the cylinder head exhaust side lubricating oil passage 31 and the cylinder head intake side lubricating oil passage 32 through a proportional three-way valve 35 (the cylinder head exhaust side lubricating oil passage 31 and the cylinder head intake side lubricating oil passage 32 may be connected to an oil passage port of the proportional three-way valve 35). The plurality of piston cooling nozzles 306 may be respectively connected to the piston cooling oil passage 33, and the cooling oil is delivered to the piston cooling nozzle 306 through the piston cooling oil passage 33. The plurality of piston cooling nozzles 306 may be respectively arranged corresponding to the plurality of pistons 307 to achieve lubrication and cooling of the plurality of pistons 307.

[0035] Preferably, Figure 1 As shown, in the embodiment, the oil-using component may further include a bearing part and a supercharger 34. The bearing part may include a plurality of main bearings 308 and a plurality of connecting rod bearings 309. The main oil passage 3 may be connected to the plurality of main bearings 308 through oil passages. A plurality of connecting rod bearings 309 may be connected to the plurality of main bearings 308 through oil passages. Specifically, as shown in the embodiment, the number of main bearings 308 is five, and the number of connecting rod bearings 309 is four, wherein four main bearings 308 are connected to connecting rod bearings 309. In addition, the main oil passage 3 may also be connected to the supercharger 34, thereby realizing lubrication and cooling of the main bearings 308, the connecting rod bearings 309 and the supercharger 34 through cooling oil.

[0036] Preferably, Figure 1 As shown, in the embodiment, the cylinder 4 may include a cylinder oil jacket 401 and a cylinder head oil jacket 402. The cylinder oil jacket 401 may be connected to the electronic oil pump 2, so that the electronic oil pump 2 can supply oil to the cylinder oil jacket 401. The cylinder head oil jacket 402 may be connected to the cylinder oil jacket 401, and cooling oil may be discharged from the cylinder head oil jacket 402. In addition, the cooling oil flowing out of the cylinder head oil jacket 402 may be directly measured by the temperature sensor 52 to detect the oil temperature of the cylinder 4.

[0037] More preferably, Figure 1 As shown, in an embodiment, the heat exchange component may include a radiator 41 and a heater core 42. The radiator 41 may be connected to a single valve thermostat 410, and the single valve thermostat 410 is connected to a cylinder head oil jacket 402. The high-temperature cooling oil discharged from the cylinder 4 flows to the radiator 41 through the single valve thermostat 410 for heat dissipation, and finally flows back to the oil pan 1. The heater core 42 may be connected to an EGR cooler 420, and the EGR cooler 420 is connected to the cylinder head oil jacket 402. The high-temperature cooling oil discharged from the cylinder 4, after passing through the EGR cooler 420 to reduce the temperature of the exhaust gas involved in the recirculation, flows to the heater core 42 to provide heat for the vehicle. The cooling oil flows back to the oil pan 1 after heat exchange in the heater core 42.

[0038] In addition, preferably, Figure 1 As shown, in an embodiment, the cooling and lubrication system for the engine may further include an expansion pot 43. Specifically, the cylinder head oil jacket 402 may be connected to the expansion pot 43, the radiator 41 may be connected to the expansion pot 43, and the EGR cooler 420 may be connected to the expansion pot 43, thereby separating the exhaust gas in the cooling oil through the expansion pot 43. The expansion pot 43 may be connected to the oil pan 1, so that the coolant can eventually return to the oil pan 1.

[0039] Preferably, in the embodiment, the electronic oil pump 2 can adjust the speed according to different working conditions, speed, torque and oil temperature of the engine to achieve accurate control of the flow of cooling oil to the main oil gallery 3 and the cylinder 4. Specifically, the pressure sensor 51 and the temperature sensor 52 can be electrically connected to the vehicle controller respectively to transmit the detection results. The vehicle controller can control the speed of the electronic oil pump 2 according to the detection results of the sensors. When the detection result of the pressure sensor 51 is lower than the preset pressure range, the speed of the electronic oil pump 2 increases to increase the pressure in the main oil gallery 3. When the detection result of the pressure sensor 51 is lower than the preset pressure range, the speed of the electronic oil pump 2 decreases to reduce the pressure in the main oil gallery 3. When the detection result of the temperature sensor 52 is lower than the preset temperature range, the speed of the electronic oil pump 2 decreases to reduce heat exchange and increase the temperature of the cooling oil. When the detection result of the temperature sensor 52 is higher than the preset temperature range, the speed of the electronic oil pump 2 increases to enhance heat exchange and reduce the temperature of the cooling oil.

[0040] In addition, if Figure 1 As shown, according to a second aspect of the present invention, there is provided a vehicle, the vehicle comprising the cooling and lubrication system for the engine as described above.

[0041] During use, the electronic oil pump 2 can adjust the speed according to the detection results of the pressure sensor 51 and the temperature sensor 52, which makes it easy to accurately control the pressure and temperature in the system and achieve efficient heat dissipation. In the cooling and lubrication system for the engine, the cooling system and the lubrication system are combined together to realize the function of pressurizing the cooling medium, thereby completing the entire heat dissipation and lubrication cycle, greatly saving the layout space.

[0042] Finally, it should be noted that the above-described embodiments are only specific implementation methods of the present application, which are used to illustrate the technical solutions of the present application, rather than to limit them. The protection scope of the present application is not limited thereto. Although the present application is described in detail with reference to the above-described embodiments, ordinary technicians in the field should understand that any technician familiar with the technical field can still modify the technical solutions recorded in the above-described embodiments within the technical scope disclosed in the present application, or can easily think of changes, or make equivalent replacements for some of the technical features therein; and these modifications, changes or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application, and should be included in the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A cooling and lubrication system for an engine, characterized in that: The cooling and lubrication system for the engine comprises: Oil pan; an electronic oil pump, connected to the oil pan; A main oil passage, connected to the electronic oil pump, the main oil passage is connected to the oil-using component; A cylinder, connected to the electronic oil pump, the cylinder is connected to a heat exchange component, and the heat exchange component is connected to an oil pan; a pressure sensor, disposed in the main oil passage; and A temperature sensor is arranged at the oil outlet of the cylinder; The electronic oil pump can adjust the rotation speed according to the detection results of the pressure sensor and the temperature sensor.

2. The cooling and lubrication system for an engine according to claim 1, characterized in that: The oil-using component comprises: An exhaust-side camshaft is connected to the main oil passage via an exhaust-side lubricating oil passage of the cylinder head; An exhaust-side variable timing valve is connected to the main oil passage through the cylinder head exhaust-side lubricating oil passage; An intake-side camshaft is connected to the main oil passage via an intake-side lubricating oil passage of the cylinder head; An intake-side variable timing valve is connected to the main oil passage through the cylinder head intake-side lubricating oil passage; a fuel pump connected to the main oil passage through the lubricating oil passage on the intake side of the cylinder head; and A hydraulic tappet, wherein the lubricating oil passage on the exhaust side of the cylinder head and the lubricating oil passage on the intake side of the cylinder head are respectively connected to the hydraulic tappet.

3. The cooling and lubrication system for an engine according to claim 2, characterized in that: The oil-using component includes a plurality of piston cooling nozzles, and the plurality of piston cooling nozzles are connected to a piston cooling oil passage. The main oil passage is connected to the piston cooling oil passage and the cylinder head exhaust side lubricating oil passage and the cylinder head intake side lubricating oil passage through a proportional three-way valve.

4. The cooling and lubrication system for an engine according to claim 1, characterized in that: The oil-using component comprises: A bearing portion, the bearing portion comprising a plurality of main bearings and a plurality of connecting rod bearings, the main oil passage being connected to the plurality of main bearings, and the plurality of connecting rod bearings being connected to the plurality of main bearings respectively; and A supercharger, wherein the main oil passage is connected to the supercharger.

5. The cooling and lubrication system for an engine according to claim 1, characterized in that: The cylinder comprises a cylinder oil jacket and a cylinder head oil jacket, the cylinder oil jacket is communicated with the electronic oil pump, and the cylinder head oil jacket is communicated with the cylinder oil jacket.

6. The cooling and lubricating system for an engine according to claim 5, characterized in that: The heat exchange component comprises: a radiator connected to a single-valve thermostat, wherein the single-valve thermostat is connected to the cylinder head oil jacket; and The heater core is connected to the EGR cooler, and the EGR cooler is connected to the cylinder head oil jacket.

7. The cooling and lubricating system for an engine according to claim 6, characterized in that: The cooling and lubrication system for the engine also includes an expansion pot, the cylinder head oil jacket is connected to the expansion pot, the radiator is connected to the expansion pot, the EGR cooler is connected to the expansion pot, and the expansion pot is connected to the oil pan.

8. The cooling and lubricating system for an engine according to any one of claims 1 to 7, characterized in that: A filter is arranged in the oil pan, the electronic oil pump is connected to the filter, and the main oil channel is connected to the electronic oil pump through an oil filter.

9. The cooling and lubricating system for an engine according to any one of claims 1 to 7, characterized in that: When the detection result of the pressure sensor is lower than the preset pressure range, the speed of the electronic oil pump increases, and when the detection result of the pressure sensor is higher than the preset pressure range, the speed of the electronic oil pump decreases; When the detection result of the temperature sensor is lower than a preset temperature range, the rotation speed of the electronic oil pump decreases, and when the detection result of the temperature sensor is higher than the preset temperature range, the rotation speed of the electronic oil pump increases.

10. A vehicle, characterized in that: The vehicle comprises a cooling and lubrication system for an engine according to any one of claims 1 to 9.

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