Engine oil heating system of engine, engine and automobile
By designing bypass oil and oil circuit switching components in the engine and directly heating the engine oil using engine waste heat, the problems of high cost and limited heating effect in the prior art are solved, and efficient and low-cost engine oil heating effect are achieved .
Patent Information
- Application Number
- CN202420064635.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-10
- Publication Date
- 2025-02-18
- Estimated Expiration
- 2034-01-10
AI Technical Summary
The oil heating system of existing engines is costly and has limited heating effect. Especially in hybrid engines, when frequent start-stop and low-load operation, the oil temperature is difficult to increase rapidly, resulting in a degradation of lubricating performance.
An engine oil heating system is designed. By setting up bypass oil circuit and oil circuit switching components, high-level return oil is introduced into the heating oil passage or the direct oil passage. The engine waste heat is used to directly heat the engine oil, avoiding additional power consumption and coolant. Indirect heating is inefficient.
It realizes the rapid heating of engine oil using engine waste heat, reduces heating costs and energy consumption, improves the heating efficiency and lubrication performance of engine oil, and avoids the risk of engine oil coking due to overheating.
Smart Images
Figure CN222501838U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of automobile engines, in particular to an engine oil heating system, an engine and an automobile. Background Art
[0002] As one of the five major systems of the engine, the lubrication system plays a vital role in the normal operation of the engine. Good lubrication conditions are not only conducive to reducing the friction loss of each moving part, reducing the wear of parts and the power consumption of the engine, but also play a role in cleaning, cooling, sealing, rust prevention and hydraulic function execution. This requires that the engine oil always maintains good quality and is in the optimal temperature range.
[0003] Figure 1 The basic structure and working principle of a conventional engine lubrication system are demonstrated, which includes a supercharger 1 for increasing cylinder intake pressure, an oil control valve 2 for controlling oil flow and flow direction, a phase modulator 3 for controlling valve opening timing, a camshaft 4 for controlling valve opening and closing, a chain tensioner 5 for tensioning the engine timing chain, an oil pressure sensor 6 for monitoring oil pressure, a hydraulic tappet 7 for automatically compensating valve clearance, a piston assembly 8, a connecting rod assembly 9, a piston nozzle 10, an oil pan 11, a crankshaft 12, a main oil gallery 13, a filter 14, an oil pump 15, a pressure relief valve 16, a bypass valve 17, an oil filter 18 and an oil cooler 19. The entire lubrication cycle is nothing more than pressurizing the oil in the oil pan 11 and delivering it to all friction pairs and hydraulic functional components inside the engine through the oil pump 15, providing lubrication, cleaning and cooling for the corresponding moving parts by forced or splashing, and then returning to the oil pan 11 by gravity.
[0004] During the whole process, the heavier metal impurities in the engine oil will settle at the bottom of the oil pan, the large foreign matter will be blocked by the filter screen of the filter 14, and the fine impurities can be filtered by the oil filter 18. These measures ensure the cleanliness of the engine oil. However, with the use of the vehicle and the operation of the engine, a certain amount of fuel will accumulate in the engine oil, causing dilution. In addition, after the engine is shut down in low temperature environments such as winter, the air in the engine cools down, and the condensed water will also enter the engine oil. When the content is too high, it will cause the engine oil to emulsify. Whether it is fuel dilution or oil emulsification, it will cause the viscosity and lubrication performance of the engine oil to decrease, increase the wear and power loss of the engine, and in severe cases, it may even cause lagging or locking, causing engine damage.
[0005] Of course, during the lubrication cycle, the oil will also flow through high-speed moving areas such as the crankshaft 12, connecting rod assembly 9, camshaft 4, and high-temperature components such as the piston assembly 8 and supercharger 1, thereby being heated to a higher temperature. Some engines are even equipped with an oil cooler 19 to control the temperature of the oil under extreme conditions to prevent the oil temperature from being too high and causing coking. Therefore, under normal circumstances, a small amount of fuel and water mixed in the oil will be evaporated when the engine is running and eliminated through the crankcase ventilation system. Generally, it will not accumulate too much to cause oil quality problems.
[0006] But this is only a general situation. If the user needs to use the car frequently for short periods of time and short mileage, the engine cannot be fully warmed up, and the oil temperature is low, which is not enough to evaporate the fuel and water in it, then it may lead to fuel dilution and a continuous increase in water content. In hybrid applications, the vehicle often operates in pure electric mode, the engine load is not high and it is frequently started and stopped, so the risk will undoubtedly be higher.
[0007] Therefore, new engines, especially hybrid engine designs, need to be able to warm up faster or increase the oil temperature to improve lubrication and avoid fuel dilution and oil emulsification. There are currently two traditional methods:
[0008] One is to add an electric heating component in the oil pan 11 or in the lubricating oil circuit to directly heat the engine oil when the engine is cold. The advantages of this solution are simple control and quick effect, but the cost is high and it will cause additional power consumption of the vehicle;
[0009] The second is to combine the thermal management strategy of the cooling system to first achieve rapid heating of the coolant, or simply use the electric heating components or the waste heat of the engine exhaust to quickly heat the coolant, and then use the coolant to heat the engine oil. When using this solution, the engine's lubrication system does not need to be changed, but the cooling system control requirements are high, and the indirect heating of the engine oil has limited effect.
[0010] Therefore, the engine oil heating system in the prior art has the problems of high cost and limited heating effect. Utility Model Content
[0011] The utility model aims to solve the problems of high cost and limited heating effect of the oil heating system of the engine in the prior art.
[0012] To solve the above problems, an embodiment of the utility model discloses an oil heating system for an engine, comprising: a bypass oil circuit, the bypass oil circuit is arranged between the high-position oil drain port and the oil pan of the engine, and is connected to the high-position oil drain port and the oil pan of the engine; the bypass oil circuit comprises an oil circuit switching component, a heating oil channel, and a straight oil channel; wherein the oil circuit switching component comprises an oil inlet and two oil outlets, wherein the oil inlet of the oil circuit switching component is connected to the high-position oil drain port, one of the oil outlets of the oil circuit switching component is connected to the oil inlet of the heating oil channel, and the other oil outlet is connected to the oil inlet of the straight oil channel; the oil outlets of the heating oil channel and the straight oil channel are both connected to the oil pan, and a waste heat source is arranged on the periphery of the heating oil channel, on the side away from the straight oil channel.
[0013] By adopting the above scheme, when heating the engine oil, the waste heat of the engine is used to heat the return oil in the heating oil channel, without consuming the power of the engine or the electric resources of the vehicle, thereby reducing costs; compared with indirectly heating the engine oil by heating the coolant, it can directly and effectively accelerate the temperature rise of the engine oil and increase the average temperature of the engine oil, thereby improving the heating efficiency and effect of the engine oil.
[0014] According to another specific embodiment of the utility model, in the oil heating system of the engine disclosed in the embodiment of the utility model, the oil circuit switching component is a switch valve or a three-way valve; wherein when the oil circuit switching component is a switch valve, then in the vertical direction, the position of one of the oil outlets of the switch valve is higher than the position of the other oil outlet of the switch valve, the oil inlet of the switch valve is connected to the high-level oil drain port, one oil outlet of the switch valve is connected to the oil inlet of the heating oil channel, and the other oil outlet of the switch valve is connected to the oil inlet of the straight oil channel; the switch valve switches between an open state and a closed state so that the flow state of the oil from the high-level oil drain port switches between a first state of flowing into the heating oil channel and a second state of flowing into the straight oil channel; or, when the oil circuit switching component is a three-way valve, the oil inlet of the three-way valve is connected to the high-level oil drain port, one oil outlet of the three-way valve is connected to the oil inlet of the heating oil channel, and the other oil outlet of the three-way valve is connected to the oil inlet of the straight oil channel.
[0015] By adopting the above scheme, when the oil circuit switching component is a switch valve, the position of one of the oil outlets of the switch valve is set at a position higher than the other oil outlet of the switch valve in the vertical direction, and the oil circuit switching of the engine oil is completed by utilizing the gravity characteristics, thereby ensuring that the engine oil is accurately switched between flowing into the heating oil channel and the straight oil channel under the action of the switch valve, and the switch valve has a simple principle and is easy to control; when the oil circuit switching component is a three-way valve, the three-way valve relies on the characteristic of only opening the corresponding oil outlet as needed to complete the accurate switching of the engine oil between flowing into the heating oil channel and the straight oil channel, and the three-way valve has a simple structure and reliable control.
[0016] According to another specific embodiment of the present utility model, in the engine oil heating system disclosed in the embodiment of the present utility model, the high-position oil drain port includes at least one of the oil outlet of the supercharger of the engine, the oil outlet of the camshaft of the engine, and the oil outlet of the hydraulic tappet of the engine.
[0017] With the above solution, the engine oil that needs to be heated is part of the return oil from the high-position oil drain port. The engine oil can flow out to the oil pan after being heated by the heating system only by gravity, without the need to set additional pressurizing and drainage devices, thereby reducing the cost and the requirement for layout space at the same time.
[0018] According to another specific embodiment of the present utility model, in the engine oil heating system disclosed in the embodiment of the present utility model, the waste heat heat source is the catalytic converter assembly of the engine or the exhaust pipe of the engine.
[0019] With the above solution, choosing the catalytic converter assembly of the engine or the exhaust pipe of the engine as the waste heat heat source can realize direct heating by making full use of the vehicle's own waste heat without additionally setting a heating heat source, further reducing the heating cost of the engine oil. At the same time, compared with indirectly heating the engine oil by heating the coolant, it can directly and effectively accelerate the temperature rise of the engine oil and increase the average temperature of the engine oil, improving the heating efficiency and effect of the engine oil.
[0020] According to another specific embodiment of the present utility model, in the engine oil heating system disclosed in the embodiment of the present utility model, the heating oil passage includes a drainage section, a heating section, and a diversion section that are arranged in sequence and communicated along the vertical direction; wherein, the oil inlet of the drainage section is communicated with an oil outlet of the oil path switching component, and the oil outlet of the diversion section is communicated with the oil pan; and, the overall shape of the drainage section of the heating oil passage is an "┐" shape structure, a "∩" shape structure, or a "ㄣ" shaped pipe structure; and in the vertical direction, the highest position of the drainage section is not higher than the high-position oil drain port.
[0021] With the above solution, in the vertical direction, the overall height of the drainage section is not higher than the high-position oil drain port, ensuring that the engine oil in the oil switching component smoothly enters the drainage section without backflow, and at the same time avoiding the phenomenon of coking caused by continuous heating of the engine oil remaining in the drainage section.
[0022] According to another specific embodiment of the present utility model, in the engine oil heating system disclosed in the embodiment of the present utility model, the heating section is in a spiral tubular structure surrounding the waste heat heat source in the length extension direction of the waste heat heat source and / or the heating section is in a labyrinth structure, and in the vertical direction, the trend of the heating section continuously decreases from the inlet of the heating section to the outlet of the heating section; or the heating section is arranged on one side of the waste heat heat source, and the surface of the heating section is provided with a finned or textured sheet-shaped closed housing structure.
[0023] By adopting the above scheme, the heating section is configured as at least one of a spiral tubular structure or a labyrinth structure in the heating section, or the surface of the heating section is provided with a finned or textured sheet-like closed cover structure, so that the heating area and effective heating length of the heating section are increased, thereby improving the oil heating efficiency; in the vertical direction, the heating section is made to follow a continuous downward direction, thereby avoiding the dead zone in which the oil remains in the heating section, and thus avoiding the generation of coking due to continuous heating.
[0024] According to another specific embodiment of the utility model, in the oil heating system of the engine disclosed in the embodiment of the utility model, when the oil circuit switching component is a switch valve, the switch valve can be a wax-type mechanical temperature control valve or an electronic control valve; wherein, when the switch valve is an electronic control valve, the oil inlet of the switch valve is also provided with a temperature sensor, the temperature sensor is connected to the electronic controller, and the valve body of the switch valve is connected to the electronic controller.
[0025] By adopting the above scheme, the opening and closing timing of the switch valve can be accurately controlled to avoid the situation where the oil is not heated enough due to early opening and the oil is overheated and coked due to late opening, thereby ensuring the accuracy of heating the oil to the specified temperature and the simplicity and reliability of the switch valve control.
[0026] According to another specific embodiment of the utility model, in the oil heating system of the engine disclosed in the embodiment of the utility model, the straight-through oil passage includes a straight-through chamber and a straight-through pipeline which are arranged in sequence and connected in the vertical direction; the straight-through chamber and the valve chamber accommodating the oil circuit switching component are located at the same horizontal position, the valve chamber includes an oil inlet, an oil outlet and another oil outlet, the oil inlet, an oil outlet and another oil outlet of the valve chamber correspond to the oil inlet, an oil outlet and another oil outlet of the oil circuit switching component respectively; and the straight-through chamber is farther away from the heating oil passage than the valve chamber, the oil inlet of the straight-through chamber is connected to the opening of the other oil outlet of the valve chamber, and the oil outlet of the straight-through pipeline is connected to the oil pan; wherein, when the oil circuit switching component is a switch valve, the valve body of the switch valve is arranged at the other oil outlet position of the valve chamber; or when the oil circuit switching component is a three-way valve, the three-way valve is an electromagnetic reversing valve.
[0027] By adopting the above scheme, when the oil circuit switching component is a switch valve, by setting the switch valve at another oil outlet position that is lower in the vertical direction, the oil circuit can be switched by only controlling the opening and closing of the switch valve using gravity. The structure is simple, the space layout requirements are reduced, and the control is reliable. When the oil circuit switching component is a three-way solenoid reversing valve, the oil circuit can be switched by opening and closing different outlets of the three-way valve. The structure is simple, the space layout requirements are reduced, and the control is convenient.
[0028] An embodiment of the utility model discloses an engine, comprising an engine oil heating system as described in any of the above embodiments.
[0029] An embodiment of the utility model discloses a car, comprising the engine described in the above embodiment.
[0030] The beneficial effects of the utility model are:
[0031] The oil heating system of the engine provided by the present application is provided with an oil circuit switching component to switch the oil circuit between the heating oil channel and the straight oil channel as needed by setting the high-position return oil. When the oil needs to be heated, the oil circuit switching component is connected to the heating oil channel, and part of the return oil from the high-position oil discharge port is diverted to the heating oil channel. After the return oil in the heating oil channel is heated by the residual heat of the engine, it flows to the oil pan through the guide section. When the oil temperature reaches the specified temperature value, the oil circuit switching component diverts the return oil from the high-position oil discharge port to the straight oil channel, and flows to the oil pan through the straight oil channel. At this time, the oil will not flow through the heating oil channel to continue heating, thereby preventing the oil from coking at high temperature due to continuous heating. When heating the oil, the engine waste heat is used for heating, without consuming the power of the engine or the power resources of the vehicle, thereby reducing the cost of oil heating. At the same time, compared with indirectly heating the oil by heating the coolant, it can directly and effectively accelerate the temperature rise of the oil and increase the average temperature of the oil, thereby improving the heating efficiency and effect of the oil.
[0032] The engine provided by the present application can use the residual heat of the engine to quickly heat the engine oil when the engine oil needs to be heated; when the temperature of the engine oil reaches a specified temperature, the engine oil can flow quickly to the oil pan to prevent the engine oil from coking. In addition, the use of the residual heat of the engine for heating does not consume the power of the engine or the power resources of the vehicle, thereby reducing the cost of heating the engine oil. At the same time, compared with indirectly heating the engine oil by heating the coolant, it can directly and effectively accelerate the temperature rise of the engine oil and increase the average temperature of the engine oil, thereby improving the heating efficiency and effect of the engine oil.
[0033] The automobile provided in the present application has a better overall performance due to its engine having better performance. BRIEF DESCRIPTION OF THE DRAWINGS
[0034] Figure 1 It is a structural schematic diagram of an engine lubrication system in the prior art;
[0035] Figure 2 It is a structural schematic diagram of an engine oil heating system provided by an embodiment of the utility model;
[0036] Figure 3 It is another structural schematic diagram of the engine oil heating system provided by an embodiment of the utility model;
[0037] Figure 4 It is another structural schematic diagram of the engine oil heating system provided by an embodiment of the utility model;
[0038] Figure 5 It is another structural schematic diagram of the engine oil heating system provided by an embodiment of the utility model.
[0039] Description of prior art reference numerals:
[0040] 1. Supercharger; 2. Oil control valve; 3. Phase shifter; 4. Camshaft; 5. Chain tensioner; 6. Oil pressure sensor; 7. Hydraulic tappet; 8. Piston assembly; 9. Connecting rod assembly; 10. Piston nozzle; 11. Oil pan; 12. Crankshaft; 13. Main oil gallery; 14. Filter; 15. Oil pump; 16. Pressure relief valve; 17. Bypass valve; 18. Oil filter; 19. Oil cooler.
[0041] Description of the accompanying drawings in this application:
[0042] 20. High-position oil drain port; 21. Oil circuit switching component; 22. Straight oil channel; 23. Oil pan; 24. Diversion section; 25. Waste heat source; 26. Heating section; 27. Diversion section; 28. Heating oil channel; 29. Valve body; 30. Spring; 31. Valve chamber; 32. Straight chamber; 33. Straight pipeline; 34. Temperature sensor; 35. Electronic controller. DETAILED DESCRIPTION
[0043] In order to make the purpose, technical solution and advantages of the present invention more clear, the implementation mode of the present invention will be further described in detail below with reference to the accompanying drawings.
[0044] Example 1
[0045] In order to solve the problems of high cost and limited heating effect of the engine oil heating system in the prior art, the embodiment of the utility model provides an engine oil heating system. Figure 2 The oil heating system includes: a bypass oil circuit, which is arranged between the high-position oil drain port 20 of the engine and the oil pan 23, and connects the high-position oil drain port 20 of the engine and the oil pan 23; the bypass oil circuit includes an oil circuit switching component 21, a heating oil passage 28, and a straight oil passage 22. The heating oil passage 28 and the straight oil passage 22 are both oil circulation passages. In addition, the heating oil passage 28 is arranged close to the waste heat source 25, so as to heat the oil flowing through the heating oil passage 28, and the straight oil passage 22 is used to directly drain the oil from the high-position oil drain port 20 and reaching the specified temperature to the oil pan 23.
[0046] Further, in the oil heating system of the engine according to the utility model, reference is made to Figure 2, the outlet of the high-position oil drain port 20 is also provided with an oil circuit switching component 21 connected thereto. The oil inlet a of the oil circuit switching component 21 is connected to the high-position oil drain port 20, one of the oil outlets b of the oil circuit switching component 21 is connected to the oil inlet of the heating oil passage 28, and the other oil outlet c is connected to the oil inlet of the straight oil passage 22, and the oil outlets of the heating oil passage 28 and the straight oil passage 22 are both connected to the oil pan 23. Among them, the residual heat source 25 of the engine is provided on the peripheral side of the heating oil passage 28. Specifically, when the outlet b of the oil circuit switching component 21 is connected to the inlet of the heating oil passage 28, part of the high-position return oil of the engine flows into the heating oil passage 28 through the high-position oil drain port 20, and the residual heat source 25 heats the engine oil flowing through the heating oil passage 28, and the heated engine oil finally flows to the oil pan 23. When the outlet c of the oil path switching component 21 is connected to the inlet of the straight oil passage 22, the high-level return oil reaching the specified temperature flows into the straight oil passage 22 through the high-level oil drain port 20, and flows directly into the oil pan 23 along the straight oil passage 22. The engine oil reaching the specified temperature flows directly to the oil pan 23 through the straight oil passage 22 without passing through the heating oil passage 28.
[0047] With such a structure, through the oil circuit switching component 21 connected to the high-position oil drain port 20, the return oil from the high-position oil drain port 20 is effectively connected to only one of the oil outlet b connected to the heating oil passage 28 by the oil circuit switching component 21 or another oil outlet c connected to the straight oil passage 22 by the oil circuit switching component 21 at the same time. When the engine oil needs to be heated, the outlet b of the oil circuit switching component 21 is connected to the inlet of the heating oil passage 28, and part of the high-position return oil of the engine flows into the heating oil passage 28 through the high-position oil drain port 20. The waste heat source 25 heats the engine oil flowing through the heating oil passage 28, and the heated engine oil finally flows to the oil pan 23, mixes with the engine oil in the oil pan 23, and recirculates to achieve the effect of heating the engine oil as a whole. After the engine oil reaches the target temperature, the outlet c of the oil circuit switching component 21 is connected to the inlet of the straight oil passage 22, and the high-level return oil that has reached the specified temperature flows into the straight oil passage 22 through the high-level oil drain port 20, and directly flows into the oil pan 23 along the straight oil passage 22. The engine oil that has reached the specified temperature flows directly to the oil pan 23 through the straight oil passage 22 without passing through the heating oil passage 28, thereby avoiding the high-temperature coking phenomenon of the high-level return oil that has reached the specified temperature due to continuous heating through the heating oil passage 28. Since the heat source for heating the engine oil is the engine's waste heat source 25, the engine's waste heat source 25 is used to heat the engine oil in the heating oil passage 28, without consuming the engine's power or the vehicle's electrical resources, thereby effectively reducing the cost of heating the engine oil. At the same time, compared with indirectly heating the engine oil by heating the coolant, it can directly and effectively accelerate the temperature rise of the engine oil and increase the average temperature of the engine oil, thereby improving the heating efficiency and effect of the engine oil.
[0048] Specifically, in the oil heating system of the engine according to the utility model, the oil circuit switching component 21 is a switch valve or a three-way valve. Those skilled in the art should understand that the oil circuit switching component 21 can also be set as other valves or switches that can switch the oil circuit. Figure 2 , Figure 2 2 is a structural schematic diagram of the oil heating system when the oil circuit switching component 21 is a temperature-controlled switch valve. In the vertical direction, the position of the oil outlet b of the switch valve is higher than the position of the oil outlet c of the switch valve. The oil inlet a of the switch valve is connected to the high-position oil drain port 20, the oil outlet b of the switch valve is connected to the oil inlet of the heating oil channel 28, and the oil outlet c of the switch valve is connected to the oil inlet of the straight oil channel 22; the switch valve switches between an open state and a closed state, so that the flow state of the oil from the high-position oil drain port 20 switches between a first state of flowing into the heating oil channel 28 and a second state of flowing into the straight oil channel 22; or, refer to Figure 3 , Figure 3 This is a structural diagram of the oil heating system when the oil circuit switching component 21 is a temperature-controlled three-way valve. At this time, the oil inlet a of the three-way valve is connected to the high-position oil drain port 20, the oil outlet b of the three-way valve is connected to the oil inlet of the heating oil channel 28, and the oil outlet c of the three-way valve is connected to the oil inlet of the straight oil channel 22.
[0049] With such a structure, when the oil circuit switching component 21 is a switch valve, one oil outlet b of the switch valve is set at a position higher than the other oil outlet c in the vertical direction. When the engine oil needs to be heated, the switch valve closes the other oil outlet c, and the engine oil flows to the heating oil channel 28 through the oil outlet b. The engine oil in the heating oil channel 28 is heated by the waste heat source 25 and then flows to the oil pan 23; when the engine oil is heated to a specified temperature, the switch valve opens the other oil outlet c. Since the position of the oil outlet b in the vertical direction is higher than that of the oil outlet c, the engine oil can flow directly to the oil pan 23 through the oil outlet c through the straight oil channel 22 under the action of gravity alone. When the oil circuit switching component 21 is a three-way valve, there is no need to specially set the positions of the two oil outlets in the vertical direction. When the engine oil needs to be heated, the oil outlet b of the three-way valve is connected to the oil inlet of the heating oil channel 28, and the oil outlet c of the three-way valve is closed. The high-level return oil flows to the heating oil channel 28 through the high-level oil drain port 20, and the engine oil in the heating oil channel 28 is heated by the waste heat source 25 and then flows to the oil pan 23; when the engine oil is heated to the specified temperature, the oil outlet c of the three-way valve is connected to the oil inlet of the straight oil channel 22, and the oil outlet b of the three-way valve is closed. The high-level return oil flows to the straight oil channel 22 through the high-level oil drain port 20 and then directly flows to the oil pan 23. When the oil circuit switching component 21 is a switch valve or a solenoid valve, the switch valve or the solenoid valve has a simple structure and thus reduces the layout space of the components. At the same time, the engine oil can pass through the oil circuit switching component 21 by gravity alone, and is switched to the required oil circuit through the oil circuit switching component 21 and flows out to the oil pan 23. There is no need to set up additional pressurization and drainage equipment, thereby reducing the layout space requirements and costs.
[0050] Further, in the oil heating system of the engine according to the utility model, the high-position oil drain port 20 includes: at least one of the oil outlet of the engine's supercharger, the oil outlet of the engine's camshaft, and the oil outlet of the engine's hydraulic tappet. Specifically, when the high-position oil drain port 20 is at least one of the oil outlet of the engine's supercharger, the oil outlet of the engine's camshaft, and the oil outlet of the engine's hydraulic tappet, any one of the oil outlets is connected to the oil inlet a of the oil circuit switching component 21. When the high-position oil drain port 20 is two or all three of the oil outlet of the supercharger, the oil outlet of the camshaft, and the oil outlet of the hydraulic tappet, the above-mentioned oil outlets can be connected together through a pipeline and then connected to the oil inlet a of the oil circuit switching component 21. This embodiment only cites the oil output of the engine supercharger, the oil output of the engine camshaft, and the oil output of the engine hydraulic tappet as high-position oil return. It should be noted that in the vertical direction, the oil return of the components in the upper part and the upper middle part of the engine can be used as high-position oil return. With this arrangement, when the engine oil flows through the entire heating system, the engine oil can form a flow circuit only by gravity, without the need to set up additional pressurization and drainage equipment, further reducing the cost while saving the space requirement for installation, thereby reducing the difficulty of layout.
[0051] Further, in the oil heating system of the engine according to the utility model, the waste heat source 25 is the catalyst assembly of the engine or the exhaust pipe of the engine, that is, the heating oil channel 28 is arranged close to the catalyst assembly of the engine or the exhaust pipe of the engine. With such an arrangement, the engine waste heat source 25 is used to heat the oil in the heating oil channel 28, without consuming the power of the engine or the electric power resources of the vehicle, thereby effectively reducing the cost of oil heating. At the same time, compared with indirectly heating the oil by heating the coolant, it can directly and effectively accelerate the temperature rise of the oil and increase the average temperature of the oil, thereby improving the heating efficiency and effect of the oil. This embodiment only cites the waste heat source 25 as the catalyst assembly of the engine or the exhaust pipe of the engine. In actual situations, any component in the engine that can provide sufficient heat radiation to meet the heating of the oil can be used as the waste heat source 25. Therefore, those skilled in the art can select the waste heat source 25 according to actual needs.
[0052] Further, in the oil heating system of the engine according to the utility model, reference is made to Figure 4The heating oil passage 28 includes a drainage section 27, a heating section 26, and a diversion section 24 which are arranged and connected in sequence along the vertical direction; wherein the oil inlet of the diversion section 27 is connected to the oil outlet b of the oil circuit switching component 21, and the oil to be heated is diverted from the oil outlet b of the oil circuit switching component 21 to the heating section 26, and then the waste heat source 25 is used to heat the oil in the heating section 26; the oil outlet e of the diversion section 24 is connected to the oil pan 23, and the oil heated by the heating section 26 is diverted to the oil pan 23 through the diversion section 24; and the heating oil passage diversion section 27 is an overall "┐"-shaped structure, "∩"-shaped structure. The "J"-shaped pipeline structure has such a setting method that the oil in the drainage section 27 is not easy to be retained in the pipeline, thereby avoiding the coking of the retained part of the oil due to continuous heat radiation from the waste heat source 25; and, in the vertical direction, the highest position of the drainage section 27 is not higher than the high-position oil drain port 20. With such a setting method, by utilizing the principle of the communicating vessel, when the oil needs to flow to the drainage section 27 through the oil outlet b of the oil circuit switching component 21, the oil will not flow back to the oil inlet a of the oil circuit switching component 21, thereby ensuring the correct flow direction of the oil in the pipeline.
[0053] Furthermore, in the oil heating system of the engine according to the utility model, the heating section 26 is in at least one of a spiral tubular structure surrounding the waste heat source 25 or a maze structure within the heating section 26, and in the vertical direction, the direction of the heating section 26 continuously decreases from the entrance of the heating section 26 to the exit of the heating section 26; or the heating section 26 is arranged on one side of the waste heat source 25, and the surface of the heating section is provided with a finned or textured sheet-like closed cover structure. The structure has such a structure, by designing the heating section 26 to be at least one of a spiral tubular structure surrounding the waste heat source 25 or a labyrinth structure in the heating section 26, that is, the heating section 26 is designed to be a spiral tubular structure surrounding the waste heat source 25, a labyrinth structure in the heating section 26, and the heating section 26 is designed to be a spiral tubular structure surrounding the waste heat source 25 and a labyrinth structure in the heating section 26 at the same time, or the surface of the heating section 26 is provided with a fin structure or a textured sheet-like closed cover structure, the setting of the spiral tubular structure and the fin or textured sheet-like closed cover structure increase the heat radiation area between the heating section 26 and the waste heat source 25, and the labyrinth structure designed in the heating section 26 increases the effective heating length of the heating section 26, thereby further improving the heating efficiency. It should be noted that no matter what structure the heating section 26 adopts, in the vertical direction, from the entrance to the exit of the heating section 26, its direction must be continuously reduced, that is, there must be no dead zone inside the heating section to prevent the oil from remaining in the dead zone in the heating section and causing coking due to continuous heating.
[0054] Further, in the oil heating system of the engine according to the utility model, reference is made to Figure 4 When the oil circuit switching component 21 is a switch valve, the switch valve can be a wax-type mechanical temperature control valve or an electronic control valve; when the switch valve is an electronic control valve, the oil inlet a of the switch valve is also provided with a temperature sensor 34, the temperature sensor 34 is connected to the electronic controller 35, and the valve body 29 of the switch valve is connected to the electronic controller 35.
[0055] Specifically, when the engine oil needs to be heated, refer to Figure 4 The engine oil flows in from the high-position oil drain port 20 and enters the oil switching component 21 through the oil inlet a of the oil circuit switching component 21. When the switch valve is a wax-type mechanical temperature control valve, the wax-type mechanical temperature control valve keeps the switch valve oil outlet c in a normally closed state before the engine oil is heated to a specified temperature. The engine oil flows to the oil pan 23 after being heated by the waste heat source 25 through the heating oil channel 28; when the switch valve is an electronic control valve, the valve body 29 of the electronic control valve keeps the switch valve oil outlet c in a normally closed state under the spring force of the spring 30, and the temperature value is monitored by the temperature sensor 34 arranged at the oil inlet a of the switch valve, and the temperature value is fed back to the electronic controller 35. Further, when the engine oil is heated to a specified temperature, when the switch valve is a wax-type mechanical temperature control valve, the expanded paraffin (not shown in the figure) in the valve body 29 expands due to the heat and pushes the valve body 29 from the normally closed state to the open state, and the heated oil flows directly to the oil pan 23 through the straight oil passage 22; when the switch valve is an electronic control valve, when the temperature sensor 34 detects that the temperature value reaches the specified temperature, the electronic controller 35 converts the valve body 29 from the normally closed state to the open state according to the temperature feedback detected by the temperature sensor 34, and the heated oil flows directly to the oil pan 23 through the straight oil passage 22.
[0056] Further, in another preferred embodiment according to the present invention, referring to Figure 5The straight oil passage 22 includes a straight chamber 32 and a straight pipeline 33 which are arranged in sequence and connected in the vertical direction; the straight chamber 32 is located at the same horizontal position as the valve chamber 31 which accommodates the oil circuit switching component 21, and the valve chamber 31 includes an oil inlet a, an oil outlet and another oil outlet, and the oil inlet, an oil outlet and another oil outlet of the valve chamber 31 correspond to the oil inlet a, an oil outlet b and another oil outlet c of the oil circuit switching component respectively; and the straight chamber 32 is farther away from the valve chamber 31 than the valve chamber 31. The hot oil passage 28, the oil inlet of the straight chamber 32 is connected to the opening of another oil outlet c of the valve chamber 31, and the oil outlet f of the straight line 33 is connected to the oil pan 23; with this arrangement, the straight chamber 32 is arranged at a position farther away from the heated oil passage 28 than the valve chamber 31, which can prevent the engine oil that has been heated to a specified temperature from coking due to continuous heat radiation. After flowing in through the high-position oil drain port 20, the oil circuit direction can be switched to the straight chamber 32 through the oil circuit switching component 21, and then drained to the oil pan 23 through the straight line 33.
[0057] Furthermore, when the oil circuit switching component 21 is a switch valve, the valve body 29 of the switch valve is set at the other oil outlet c of the valve chamber 31; with this setting, the oil circuit switching component 21 can complete the state switching between the oil circuit connected to the heating oil channel 28 or connected to the straight oil channel 22 by only managing the opening and closing of the other oil outlet c of the valve chamber 31 as needed through the valve body 29 of the switch valve. Alternatively, when the oil circuit switching component 21 is a three-way valve, refer to Figure 2 Specifically, the three-way valve can adopt an electromagnetic reversing valve. At this time, the three-way electromagnetic reversing valve can open the oil outlet b by closing the oil outlet c, and guide the high-level return oil to the heating oil channel 28 to complete the heating of the engine oil; when the engine oil is heated to the specified temperature, the three-way electromagnetic reversing valve can close the oil outlet b by opening the oil outlet c, and then directly guide the high-level return oil to the straight oil channel 22 and then flow into the oil pan 23.
[0058] Example 2
[0059] Based on the engine oil heating system provided in the above embodiment, this embodiment further provides an engine, including the engine oil heating system described in the above embodiment.
[0060] Furthermore, in the engine provided in this embodiment, the bypass oil passage described in the above embodiment 1 is provided between the high-position oil drain port of the engine and the oil pan.
[0061] With such a structure, since the engine has the engine oil heating system provided by the above embodiment, when the engine oil needs to be heated, the engine can use the residual heat source of the engine to quickly heat the engine oil; when the engine oil temperature reaches a specified temperature, the engine oil can flow quickly to the oil pan to prevent the oil from coking. In addition, the engine waste heat source is used to directly heat the engine oil without consuming the power of the engine or the power resources of the vehicle, thereby effectively reducing the cost of heating the engine oil. At the same time, compared with indirectly heating the engine oil by heating the coolant, it can directly and effectively accelerate the temperature rise of the engine oil and increase the average temperature of the engine oil, thereby improving the heating efficiency and effect of the engine oil.
[0062] Example 3
[0063] Based on the engine provided in the above embodiment, this embodiment also provides a car, including the engine described in the above embodiment. The engine described in the above embodiment 2 is arranged in the engine compartment of the car. Since the engine can use the waste heat source of the engine to quickly heat the oil when the oil needs to be heated; when the oil temperature reaches the threshold, the oil can flow quickly to the oil pan to prevent the oil from coking. In addition, the waste heat source of the engine is used to directly heat the oil without consuming the power of the engine or the power resources of the vehicle, thereby effectively reducing the cost of heating the oil. At the same time, compared with indirectly heating the oil by heating the coolant, it can directly and effectively accelerate the temperature rise of the oil and increase the average temperature of the oil, thereby improving the heating efficiency of the oil.
[0064] Although the present invention has been illustrated and described with reference to certain preferred embodiments of the present invention, it should be understood by those skilled in the art that the above contents are further detailed descriptions of the present invention in combination with specific embodiments, and it cannot be determined that the specific implementation of the present invention is limited to these descriptions. Those skilled in the art may make various changes in form and details, including making several simple deductions or substitutions, without departing from the spirit and scope of the present invention.
Claims
1. An engine oil heating system, characterized in that: Comprising: A bypass oil passage, which is arranged between the high-position oil drain port of the engine and the oil pan and communicates with the high-position oil drain port of the engine and the oil pan; the bypass oil passage includes an oil passage switching component, a heating oil passage, and a direct-through oil passage; Wherein The oil passage switching component includes an oil liquid inlet and two oil liquid outlets. Among them, the oil liquid inlet of the oil passage switching component is communicated with the high-position oil drain port, and one of the oil liquid outlets of the oil passage switching component is communicated with the oil liquid inlet of the heating oil passage, and the other oil liquid outlet is communicated with the oil liquid inlet of the direct-through oil passage; The oil liquid outlets of the heating oil passage and the direct-through oil passage are both communicated with the oil pan; On the outer periphery of the heating oil passage, on the side away from the direct-through oil passage, there is a waste heat heat source.
2. The engine oil heating system of claim 1, characterized in that: The oil passage switching component is a switching valve or a three-way valve; Wherein When the oil passage switching component is the switching valve, then in the vertical direction, the position of one of the oil liquid outlets of the switching valve is higher than the position of the other oil liquid outlet of the switching valve. The oil liquid inlet of the switching valve is communicated with the high-position oil drain port. One oil liquid outlet of the switching valve is communicated with the oil liquid inlet of the heating oil passage, and the other oil liquid outlet of the switching valve is communicated with the oil liquid inlet of the direct-through oil passage; The switching valve switches between an open state and a closed state, so that the flow state of the oil liquid from the high-position oil drain port switches between a first state flowing into the heating oil passage and a second state flowing into the direct-through oil passage; Or When the oil passage switching component is the three-way valve, the oil liquid inlet of the three-way valve is communicated with the high-position oil drain port, one oil liquid outlet of the three-way valve is communicated with the oil liquid inlet of the heating oil passage, and the other oil liquid outlet of the three-way valve is communicated with the oil liquid inlet of the direct-through oil passage.
3. The engine oil heating system of claim 2, characterized in that: The high-position oil drain port includes at least one of the oil outlet of the supercharger of the engine, the oil outlet of the camshaft of the engine, and the oil outlet of the hydraulic tappet of the engine.
4. The engine oil heating system of claim 3, characterized in that: The waste heat heat source is the catalytic converter assembly of the engine or the exhaust pipe of the engine.
5. The engine oil heating system according to any one of claims 2 to 4, characterized in that: The heating oil passage includes a drainage section, a heating section, and a diversion section that are arranged in sequence and communicated along the vertical direction; wherein The oil liquid inlet of the drainage section is communicated with one of the oil liquid outlets of the oil passage switching component, and the oil liquid outlet of the diversion section is communicated with the oil pan; and The drainage section is integrally in an "┐”-shaped structure, a "∩”-shaped structure or a "ㄥ”-shaped pipeline structure; and, In the vertical direction, the highest position of the drainage section is not higher than the high-position oil drain port.
6. The engine oil heating system of claim 5, characterized in that: The heating section is in a spiral tubular structure surrounding the waste heat heat source in the length extension direction of the waste heat heat source, and / or the heating section is in a labyrinth structure inside, and In the vertical direction, the trend of the heating section continuously decreases from the inlet of the heating section to the outlet of the heating section; or The heating section is arranged on one side of the waste heat heat source, and the surface of the heating section is provided with a finned or textured sheet-shaped closed housing structure.
7. The engine oil heating system of claim 6, characterized in that: When the oil passage switching component is the switching valve, the switching valve includes any one of a wax-type mechanical temperature control valve or an electronic control valve; wherein When the switch valve is an electronic control valve, a temperature sensor is further provided at the oil inlet of the switch valve, the temperature sensor is connected to the electronic controller, and the valve body of the switch valve is connected to the electronic controller.
8. The engine oil heating system of claim 6, characterized in that: The straight oil passage comprises a straight cavity and a straight pipeline which are arranged in sequence and connected in a vertical direction; The through cavity and the valve cavity accommodating the oil circuit switching component are located at the same horizontal position, the valve cavity includes an oil inlet, an oil outlet and another oil outlet, the oil inlet, the oil outlet and the other oil outlet of the valve cavity correspond to the oil inlet, the oil outlet and the other oil outlet of the oil circuit switching component respectively; and The through cavity is further away from the heating oil passage than the valve chamber, the oil inlet of the through cavity is in communication with the opening of the other oil outlet of the valve chamber, and the oil outlet of the through pipeline is in communication with the oil pan; in When the oil circuit switching component is the switch valve, the valve body of the switch valve is arranged at the other oil outlet position of the valve chamber; or When the oil circuit switching component is the three-way valve, the three-way valve is an electromagnetic reversing valve.
9. An engine, characterized in that: An oil heating system for an engine comprising the engine as claimed in any one of claims 1 to 8.
10. An automobile, characterized in that: Comprising the engine as claimed in claim 9.