Engine oil heating system of engine, engine and automobile
By using residing oil and oil circuit switching components in the engine to heat the engine oil using waste heat source, the problems of high cost and poor heating effect in the prior art are solved, efficient engine oil heating is achieved, and engine performance is improved.
Patent Information
- Application Number
- CN202420064671.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-10
- Publication Date
- 2024-12-24
- Estimated Expiration
- 2034-01-10
AI Technical Summary
The oil heating system of existing engines is costly and has poor heating effect, especially in short-term and short-miles use vehicles. The low oil temperature leads to increased fuel dilution and oil moisture content, affecting engine performance.
Using residing oil circuit and oil circuit switching components, the engine's waste heat source is used to directly heat the engine oil. Through the design of heating oil channels, overflow oil channels and guide oil channels, the waste heat source is used to heat the engine oil, avoiding additional Use of electric heating components and optimize the heating effect through temperature-controlled switch valves and temperature sensors.
It effectively reduces costs, improves the oil heating efficiency and effect, improves the engine's warm-up efficiency and overall performance, and prevents oil from coking.
Smart Images
Figure CN222228642U_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] The lubrication system is one of the five major systems of the engine and plays an important role in the normal operation of the engine. Good lubrication conditions can reduce the friction loss of each moving pair, reduce the wear of parts and the power consumption of the engine, and can also play the role of cleaning, cooling, sealing, anti-corrosion, and hydraulic function execution. Therefore, the control of oil quality and oil temperature is crucial for the lubrication system.
[0003] refer to Figure 1 The structural schematic diagram of the engine lubrication system shown in FIG. The lubrication system includes a supercharger 1 for increasing the cylinder intake pressure, an oil control valve 2 for controlling the oil flow and flow direction, a phase modulator 3 for controlling the valve opening timing, a camshaft 4 for controlling the opening and closing of the valve, a chain tensioner 5 for tensioning the timing chain of the engine, an oil pressure sensor 6 for monitoring the oil pressure, a hydraulic tappet 7 for automatically compensating the 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. For the lubrication system of the engine, the entire lubrication cycle is to pressurize the oil in the oil pan 11 and transport it to all friction pairs and hydraulic functional components inside the engine through the oil pump 15, and use forced or splashing methods to provide lubrication, cleaning and cooling for the corresponding components, and then return to the oil pan 11 by gravity. During the entire lubrication process, the heavier metal impurities in the oil will settle at the bottom of the oil pan 11, large foreign matter will be blocked by the filter screen of the filter 14, and fine impurities can be filtered by the oil filter 18. However, after the engine runs for a period of time, a certain amount of fuel will accumulate in the oil, causing the oil to be diluted. In addition, in low temperature environments such as winter, after the engine is shut down, the water condensed by the air cooling in the engine will also enter the oil. When there is too much water in the oil, it will also cause emulsification, thereby affecting the engine performance.
[0004] Although in the lubrication cycle, the oil will flow through high-speed moving areas such as the crankshaft 12, the connecting rod assembly 9, the camshaft 4, and high-temperature components such as the piston assembly 8 and the supercharger 1, so that the oil can be heated to a higher temperature. The oil cooler 19 can also control the oil temperature under extreme working conditions to avoid high-temperature 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 the oil passes through high-temperature components, and will be eliminated through the crankcase ventilation system. However, when users face the situation of using the car for a short time and short mileage, the engine cannot be fully warmed up, the oil temperature is low, and the high-temperature components cannot evaporate the fuel and water mixed in the oil, which may lead to fuel dilution and increased oil water content. This problem is particularly obvious for hybrid models. Therefore, when designing the engine, it is necessary to take faster warm-up or increase the oil temperature as one of the important indicators to improve lubrication and avoid fuel dilution and oil emulsification.
[0005] Conventional methods for improving engine warm-up efficiency and oil temperature include:
[0006] The first method 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. Although this method has a good heating effect, it is costly and consumes a lot of power for the vehicle.
[0007] The second method is to combine the thermal management strategy of the cooling system to first achieve rapid temperature rise of the coolant, or use the waste heat of electric heating components or engine exhaust to heat the coolant, and then use the coolant to heat the engine oil. Although this method does not require changes to the layout of the lubrication system, it has higher requirements for the cooling system. In addition, this method indirectly heats the engine oil, and the heating effect on refueling is limited.
[0008] Therefore, the engine oil heating system in the prior art has the problems of high cost and poor heating effect. Utility Model Content
[0009] The utility model aims to solve the problems of high cost and poor heating effect of the oil heating system of the engine in the prior art.
[0010] To solve the above problems, an embodiment of the utility model discloses an oil heating system for an engine, comprising: a resident oil circuit, the resident oil circuit connecting the high-position oil drain port of the engine with the oil pan, and comprising a heating oil passage, an overflow oil passage, and a guide oil passage; wherein, the inlet of the heating oil passage is connected with the high-position oil drain port, the outlet of the heating oil passage is connected with the inlet of the overflow oil passage or the inlet of the guide oil passage, and the outlet of the overflow oil passage and the outlet of the guide oil passage are both connected with the oil pan; wherein, a waste heat source of the engine is arranged around the heating oil passage; and, the outlet of the heating oil passage is also provided with an oil circuit switching component, and the oil circuit switching component can switch the outlet of the heating oil passage to be connected with the inlet of the overflow oil passage, or to the inlet of the guide oil passage.
[0011] With the above solution, when heating the engine oil, the waste heat source of the engine is used to heat the engine oil in the heating oil channel, and no additional electric heating components are required, which effectively reduces the cost. In addition, the method of directly heating the engine oil with the waste heat source improves the heating efficiency and effect of the engine oil compared to heating the engine oil with coolant.
[0012] 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, in the vertical direction, the overflow oil channel is located above the guide oil channel; the top position of the overflow oil channel is not higher than the position of the entrance of the heating oil channel; and the overflow oil channel as a whole presents a "∩"-shaped structure or a "J"-shaped pipeline structure.
[0013] By adopting the above solution, the overflow oil channel is arranged above the guide oil channel, and the high-position return oil in the heating oil channel is affected by the overflow oil channel, and part of it will stay below the heating oil channel, thereby improving the heating effect of the engine oil. In addition, the top position of the overflow oil channel is not higher than the position of the inlet of the heating oil channel, which can prevent the engine oil from failing to flow to the oil pan through the overflow oil channel.
[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 resident oil circuit also includes a resident chamber; and the resident chamber includes an oil circuit inlet and two oil circuit outlets; wherein the outlet of the heating oil channel is connected to the oil circuit inlet of the resident chamber; the inlet of the overflow oil channel and the inlet of the guide oil channel are respectively connected to the two oil circuit outlets of the resident chamber.
[0015] By adopting the above scheme and setting up an overflow oil channel, the engine oil can be retained and slowly flow through the heating oil channel, thereby continuously heating a large amount of engine oil and allowing this part of the engine oil to participate in the circulation, thereby improving the warm-up efficiency of the engine.
[0016] 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 temperature-controlled switching valve, which is arranged at the inlet of the diversion oil channel and can be switched between an open state and a closed state; wherein, when the temperature-controlled switching valve is in a closed state, the outlet of the heating oil channel and the inlet of the diversion oil channel are disconnected, and the outlet of the heating oil channel is connected to the inlet of the overflow oil channel; and, when the temperature-controlled switching valve is in an open state, the outlet of the heating oil channel is connected to the inlet of the diversion oil channel.
[0017] According to another specific embodiment of the present invention, the oil heating system of the engine disclosed in the embodiment of the present invention, the temperature-controlled switching valve includes a valve body, a connecting rod member and a compression spring; wherein the valve body and the connecting rod member are arranged in a retention chamber, one end of the connecting rod member is fixedly connected to an inner wall surface on one side of the retention chamber, and the other end is slidably connected to the valve body, and the other end of the valve body is fixedly connected to the inner wall surface on the other side of the retention chamber through a compression spring; a partition wall adapted to the valve body is also arranged in the retention chamber; wherein the valve body is a wax-type mechanical control valve; or, a temperature sensor is also arranged in the retention chamber, near the outlet position of the heating oil channel, the valve body is an electronic control valve, and the temperature sensor is connected to the electronic control unit, and the electronic control unit is connected to the valve body.
[0018] By adopting the above scheme, the valve body is set as a wax-type mechanical control valve, and the structural characteristics of the wax-type mechanical control valve can be used to switch the temperature control switch valve between the open state and the closed state, without setting other valve control components, which reduces the difficulty of layout and improves the reliability of the system. The valve body is set as an electronic control valve, and its state changes according to the data collected by the temperature sensor, which has a higher control accuracy.
[0019] 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 valve body is a wax-type mechanical control valve, the retention chamber also includes a temperature sensing inlet and an oil return outlet; and the temperature sensing inlet and the oil return outlet are both located on a side of the retention chamber close to the valve body, so that the oil flowing from the temperature sensing inlet to the oil return outlet can continue to flow through the valve body and realize the opening or closing of the wax-type mechanical control valve; and the outlet of the overflow oil channel and the outlet of the guide oil channel are both connected to the temperature sensing inlet; the oil return outlet is connected to the oil pan.
[0020] According to another specific embodiment of the utility model, the oil heating system of the engine disclosed in the embodiment of the utility model, the high-position oil drain port includes: the oil outlet of the engine's supercharger, the oil outlet of the corresponding phase modulator, camshaft and hydraulic tappets and other high-position lubricating parts of the engine; and the waste heat source is the catalyst assembly of the engine or the exhaust pipe of the engine; the heating oil channel includes an oil collecting section and a heating section, and the oil collecting section is located above the heating section in the vertical direction; the inlet of the oil collecting section is connected to the high-position oil drain port, and the outlet is connected to the inlet of the heating section, and the outlet of the heating section is connected to the inlet of the retention chamber; and the heating section is a tubular structure surrounding the circumference of the waste heat source; and, in the vertical direction, the inlet of the heating section is higher than the position of its outlet, and is in a continuously decreasing direction, so as to avoid the existence of a dead zone that may cause the oil to remain for a long time; and a heating plate can also be fixedly provided on the outer side of the tube wall of the heating section.
[0021] By adopting the above scheme, the high-position return oil of the engine is heated, and the oil can flow into the heating oil channel and flow to the oil pan by gravity alone, without the need to set up an additional oil pump, which further saves costs and reduces the difficulty of layout. Furthermore, the heating section is arranged in a Z-shape or spiral around the side of the waste heat source in the vertical direction, which increases the heat radiation area between the heating section and the waste heat source and improves the heating effect of the oil. Furthermore, by setting up a heating plate, the heat radiation amount of the waste heat source can be compensated under extreme working conditions, further improving the heating effect of the oil.
[0022] An embodiment of the utility model discloses an engine, comprising an engine oil heating system as described in any of the above embodiments.
[0023] An embodiment of the utility model discloses a car, comprising the engine described in the above embodiment.
[0024] The beneficial effects of the utility model are:
[0025] The engine oil heating system provided by the present application does not need to change the traditional engine lubrication system. It only introduces a part of the return oil that originally flows directly back to the oil pan in the high-position area of the engine into a separate resident oil circuit. By setting an oil circuit switching component, the outlet of the heating oil channel is effectively connected to only one of the inlet of the overflow oil channel or the inlet of the diversion oil channel at the same time. When the engine oil needs to be heated, the oil circuit switching component can disconnect the outlet of the heating oil channel and the inlet of the diversion oil channel, that is, close the diversion oil channel. At this time, the engine oil will stay and slowly flow through the lower part of the heating oil channel, and continue to be heated by the waste heat source. The heated engine oil will flow to the oil pan through the overflow oil channel and mix with the engine oil in the oil pan to increase the overall temperature of the engine oil in the engine. When the engine oil temperature reaches the threshold, the oil circuit switching component can connect the outlet of the heating oil channel and the inlet of the diversion oil channel. At this time, the engine oil will not stay below the heating oil channel, but will quickly flow through the heating oil channel and flow to the oil pan through the diversion oil channel, preventing the engine oil from being close to the waste heat source for a long time and causing high-temperature coking. Since the engine oil is heated by using the waste heat source of the engine to heat the oil in the heating oil channel, no additional electric heating components are required, which effectively reduces costs. In addition, the use of waste heat source to directly heat the engine oil improves the heating efficiency and effect of the engine oil compared to using coolant to heat the engine oil.
[0026] The engine provided by the present application can use the residual heat source of the engine to quickly heat the engine oil when the engine oil needs to be heated; when the engine oil temperature reaches a threshold, the engine oil can flow quickly to the oil pan to prevent the engine oil from coking. In addition, the engine waste heat source is used to directly heat the engine oil without the need to set up additional electric heating components, which effectively reduces costs, improves the heating efficiency and effect of the engine oil, and thus improves the performance of the engine.
[0027] The automobile provided in the present application has a better overall performance due to its engine having better performance. BRIEF DESCRIPTION OF THE DRAWINGS
[0028] Figure 1 It is a structural schematic diagram of an engine lubrication system in the prior art;
[0029] Figure 2a It is a structural schematic diagram of an engine oil heating system provided by an embodiment of the utility model;
[0030] Figure 2b It is another structural schematic diagram of the engine oil heating system provided by an embodiment of the utility model;
[0031] Figure 3 It is another structural schematic diagram of the engine oil heating system provided by an embodiment of the utility model;
[0032] Figure 4It is another structural schematic diagram of the engine oil heating system provided by an embodiment of the utility model.
[0033] Description of prior art reference numerals:
[0034] 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.
[0035] Description of the accompanying drawings in this application:
[0036] 20. High-position oil drain port; 21. Oil pan; 22. Heating oil channel; 23. Overflow oil channel; 24. Guide oil channel; 25. Waste heat source; 26. Oil circuit switching component; 27. Retention chamber; 28. Temperature-controlled switch valve; 29. Valve body; 30. Connecting rod member; 31. Compression spring; 32. Partition wall; 33. Temperature sensor; 34. Electronic control unit. DETAILED DESCRIPTION
[0037] Embodiment 1:
[0038] In order to solve the problems of high cost and poor 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 2a and Figure 2b The oil heating system includes a resident oil circuit and an oil circuit switching component 26. The resident oil circuit connects the high-position oil discharge port 20 of the engine and the oil pan 21, and includes a heating oil channel 22, an overflow oil channel 23, and a guide oil channel 24. The heating oil channel 22, the overflow oil channel 23, and the guide oil channel 24 are all passages for oil. In addition, the heating oil channel 22 is arranged close to the heat source to heat the oil flowing through and resident in the heating oil channel 22, the overflow oil channel 23 is used to realize the oil resident in the heating oil channel 22, and the guide oil channel 24 is used to discharge the oil directly to the oil pan 21.
[0039] Further, in the oil heating system of the engine according to the utility model, reference is made to Figure 2a, the inlet a of the heating oil passage 22 is connected to the high-position oil drain port 20, the outlet b of the heating oil passage 22 is connected to the inlet c of the overflow oil passage 23 or the inlet d of the guide oil passage 24, and the outlet e of the overflow oil passage 23 and the outlet f of the guide oil passage 24 are both connected to the oil pan 21. Among them, the residual heat source 25 of the engine is arranged on the periphery of the heating oil passage 22. Specifically, when the outlet b of the heating oil passage 22 is connected to the inlet c of the overflow oil passage 23, the high-position return oil of the engine enters the heating oil passage 22 through the high-position oil drain port 20 and stays at the lower part of the heating oil passage 22, and the residual heat source 25 heats the oil staying at the lower part of the heating oil passage 22. Since the high-position return oil continuously flows into the heating oil passage 22, after the storage capacity of the heating oil passage 22 is saturated, the heated oil will enter the overflow oil passage 23 through the inlet of the overflow oil passage 23, and flow into the oil pan 21 along the overflow oil passage 23. When the outlet b of the heating oil passage 22 is connected to the inlet d of the guide oil passage 24, the high temperature return oil of the engine enters the heating oil passage 22 through the high position oil discharge port 20, and flows directly into the oil pan 21 along the guide oil passage 24. Since the engine oil will not stay in the heating oil passage 22, the engine oil will not be continuously heated by the waste heat source 25.
[0040] Further, in the oil heating system of the engine according to the utility model, reference is made to Figure 2a The outlet b of the heating oil passage 22 is also provided with an oil passage switching component 26, and the oil passage switching component 26 can control the connection or disconnection between the outlet b of the heating oil passage 22 and the inlet d of the guide oil passage 24. Figure 2b In this embodiment, an oil circuit switching component 26 with a three-way valve function can also be used to switch the outlet b of the heating oil channel 22 to communicate with the inlet c of the overflow oil channel 23, or to communicate with the inlet d of the guide oil channel 24. In other words, the oil circuit switching component 26 has the function of oil circuit switching, which can make the outlet b of the heating oil channel 22 only effectively communicate with the inlet c of the overflow oil channel 23 or the inlet d of the guide oil channel 24 at the same time. When the oil circuit switching component 26 switches the outlet b of the heating oil channel 22 to communicate with the inlet c of the overflow oil channel 23, the waste heat source 25 will heat the oil residing in the lower part of the heating oil channel 22. After the oil temperature rises, it flows to the oil pan 21 through the overflow oil channel 23. The heated oil flowing into the oil pan 21 will mix with other oils in the engine and circulate continuously, thereby achieving an increase in the overall oil temperature in the engine. When the oil circuit switching component 26 switches the outlet b of the heating oil channel 22 to be connected with the inlet d of the guide oil channel 24 , the engine oil will not stay at the bottom of the heating oil channel 22 , but will directly enter the guide oil channel 24 through the oil circuit switching component 26 and return to the oil pan 21 .
[0041] With such a structure, by setting the oil circuit switching component 26, the outlet b of the heating oil channel 22 can be effectively connected with only one of the inlet c of the overflow oil channel 23 or the inlet d of the diversion oil channel 24 at the same time. When the engine oil needs to be heated, the oil circuit switching component 26 can connect the outlet b of the heating oil channel 22 with the inlet c of the overflow oil channel 23. At this time, the engine oil will stay below the heating oil channel 22 and be heated by the waste heat source 25. The heated engine oil will flow to the oil pan 21 through the overflow oil channel 23 and mix with the engine oil in the oil pan 21 to increase the overall temperature of the engine oil in the engine. When the engine oil temperature reaches the threshold, the oil circuit switching component 26 can connect the outlet b of the heating oil channel 22 with the inlet d of the diversion oil channel 24. At this time, the engine oil will not stay below the heating oil channel 22, preventing the engine oil from being close to the waste heat source 25 for a long time and causing high-temperature coking. Since the engine oil is heated by using the waste heat source 25 of the engine to heat the engine oil in the heating oil passage 22, no additional electric heating components are required, which effectively reduces the cost. In addition, the waste heat source 25 is used to directly heat the engine oil, which improves the heating efficiency and effect of the engine oil compared to using coolant to heat the engine oil.
[0042] Further, in the oil heating system of the engine according to the utility model, the high-position oil drain port 20 is the oil outlet of the high-position lubricating component corresponding to the upper part of the engine. Specifically, the high-position oil drain port 20 includes: the oil outlet of the supercharger of the engine, the oil outlet of the phase modulator, the camshaft and the hydraulic tappet corresponding to the upper part of the engine. Specifically, when the high-position oil drain port 20 is only any one of the oil outlet of the supercharger, the oil outlet of the camshaft and the oil outlet of the hydraulic tappet, any one of the above oil outlets is connected to the inlet a of the heating oil channel 22 via a pipeline. When the high-position oil drain port 20 is any 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, two or three of the above oil outlets can be connected together through a pipeline and connected to the inlet a of the heating oil channel 22. It should be noted that the high-position return oil in this embodiment refers to the oil that flows back from the upper part or the upper middle part of the engine to the oil pan 21 in the vertical direction. This embodiment only lists the oil that flows back from the supercharger, camshaft, and hydraulic tappet as the high-position return oil. In fact, the high-position return oil can also include the oil that flows back from other parts of the engine. With such a structure, the high-position return oil of the engine is heated, and the oil can flow into the heating oil channel 22 and flow to the oil pan 21 only by gravity, without the need to set up an additional oil pump, which further saves costs and reduces the difficulty of layout.
[0043] 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 to say, the heating oil channel 22 in this embodiment is preferably arranged close to the catalyst assembly or the exhaust pipe of the engine. With such a structure, the waste heat source 25 of the engine is used to heat the oil, and there is no need to set up additional electric heating components, which reduces the difficulty of layout. It should be noted that in this embodiment, only the catalyst assembly and the exhaust pipe of the engine are listed as the waste heat source 25. In fact, as long as the components inside the engine can provide sufficient heat radiation for heating the oil, they can theoretically be used as the waste heat source 25. Therefore, those skilled in the art can also select the waste heat source 25 according to actual needs.
[0044] Further, in the oil heating system of the engine according to the utility model, reference is made to Figure 2a In the vertical direction, the overflow oil passage 23 is located above the guide oil passage 24. With such a structure, the overflow oil passage 23 is arranged above the guide oil passage 24. When the outlet b of the heating oil passage 22 is connected with the inlet c of the overflow oil passage 23, the high-position return oil in the heating oil passage 22 is affected by the overflow oil passage 23 and partially stays below the heating oil passage 22, thereby improving the heating effect of the engine oil.
[0045] Furthermore, the top position of the overflow oil passage 23 is not higher than the position of the inlet a of the heating oil passage 22. Specifically, the top position of the overflow oil passage 23 is flush with the inlet a of the heating oil passage 22, or is lower than the inlet a of the heating oil passage 22. With such a structure, it is possible to prevent the engine oil from failing to flow to the guide oil passage 24 through the overflow oil passage 23.
[0046] Furthermore, in the oil heating system of the engine according to the utility model, the overflow oil passage 23 is in a "∩"-shaped structure or a "J"-shaped pipeline structure as a whole. Since the "∩"-shaped structure or the "J"-shaped pipeline structure has two pipelines arranged longitudinally and one pipeline arranged transversely and provided at the ends of the two longitudinal pipelines, the longitudinal pipeline connected to the heating oil passage 22 can allow the oil at the lower part of the heating oil passage 22 to stay, thereby improving the heating effect of the oil.
[0047] Further, in the oil heating system of the engine according to the utility model, reference is made to Figure 3, the resident oil circuit also includes a resident chamber 27. The resident chamber 27 includes an oil circuit inlet and two oil circuit outlets. Among them, the outlet b of the heating oil channel 22 is connected to the oil circuit inlet of the resident chamber 27; the inlet c and outlet e of the overflow oil channel 23 are both connected to the resident chamber 27 and are located on both sides of the oil circuit switching component 26; the inlet d and outlet f of the guide oil channel 24 are also connected to the resident chamber 27 and are located on both sides of the oil circuit switching component 26. In addition, the outlet e of the overflow oil channel 23 and the outlet f of the guide oil channel 24 are both connected to the oil pan 21 through the resident chamber 27. With such a structure, by setting the resident chamber 27, and making the engine oil passing through the overflow oil channel 23 and the guide oil channel 24 enter the other side of the oil circuit switching component 26 in the resident chamber 27 again before finally flowing back to the oil pan 21, the mechanical temperature control of the oil circuit switching component 26 can be achieved in conjunction with the wax-type temperature sensing element.
[0048] Further, in the oil heating system of the engine according to the utility model, reference is made to Figure 3 The heating oil passage 22 includes an oil collecting section and a heating section. The oil collecting section is located above the heating section in the vertical direction. The oil collecting section is used to collect the high-position return oil of the engine, and the heating section is arranged near the waste heat source 25 to directly heat the oil in the pipe. The inlet of the oil collecting section is connected to the high-position oil discharge port 20, and the outlet is connected to the inlet of the heating section. The outlet of the heating section is connected to the inlet of the resident chamber 27.
[0049] Furthermore, in the oil heating system of the engine according to the utility model, the heating section is a tubular structure that is vertically Z-shaped or spirally wrapped around the side of the waste heat source 25. With such a structure, the heating section is spirally wrapped around the side of the waste heat source 25, which increases the heat radiation area between the heating section and the waste heat source 25 and improves the heating effect of the oil.
[0050] Furthermore, in the oil heating system of the engine according to the utility model, in the vertical direction, the inlet of the heating section is higher than the position of the outlet of the heating section, and the direction of the heating section is continuously lowered from the inlet of the heating section to the outlet of the heating section to avoid the existence of a dead zone that may cause the oil to remain for a long time. The continuous lowering can be achieved by tilting the heating section, vertically setting it, etc.
[0051] It should be noted that since the engine's oil heating system uses gravity oil return, the heating section can be in a Z-shaped direction in the vertical direction, or in a spiral shape along the vertical axis, but it is necessary to avoid high and low directions in the horizontal direction (that is, the angle between the length extension direction of the heating section and the horizontal direction is too small), otherwise a dead zone will be created, causing the oil in the dead zone to be overheated, resulting in coking and even smoking and combustion.
[0052] Furthermore, in the oil heating system of the engine according to the utility model, a heating plate is fixedly arranged on the outer side of the pipe wall of the heating section. The heating plate can be any resistance heating plate. By arranging the heating plate, the heat radiation amount of the waste heat source 25 can be compensated under extreme working conditions, and the heating effect of the oil can be further improved.
[0053] Further, in a preferred embodiment according to the present invention, referring to Figure 3 The oil circuit switching component 26 is a temperature-controlled switch valve 28, which is arranged at the inlet d of the guide oil passage 24 and can be switched between an open state and a closed state. Figure 3 , when the temperature control switch valve 28 is in the closed state, the outlet b of the heating oil passage 22 is connected to the inlet c of the overflow oil passage 23. That is to say, when the engine is started from a cold state, the engine oil needs to be heated, and the temperature control switch valve 28 is set to the closed state. At this time, the heating oil passage 22 is connected to the overflow oil passage 23, and the high-position return oil of the engine will stay below the heating oil passage 22 and be continuously heated, and then return to the oil pan 21 through the overflow oil passage 23, mix with the rest of the engine oil, and circulate continuously to increase the engine oil temperature. And, refer to Figure 4 When the temperature control switch valve 28 is in the open state, the outlet b of the heating oil passage 22 is connected to the inlet d of the diversion oil passage 24. That is to say, when the engine oil temperature reaches a certain threshold, the engine oil does not need to be heated, and the temperature control switch valve 28 is set to the open state. At this time, the heating oil passage 22 is directly connected to the diversion oil passage 24, and no engine oil will stay in the heating oil passage 22, but directly return to the oil pan 21 through the residence chamber 27 and the diversion oil passage 24. Since the engine oil flows through the heating oil passage 22 for a short time, the engine oil temperature will not change significantly, and no coking will occur due to high temperature.
[0054] Further, refer to Figure 3In this embodiment, the temperature control switch valve 28 includes a valve body 29, a connecting rod member 30 and a compression spring 31. The valve body 29 and the connecting rod member 30 are arranged in the resident chamber 27, one end of the connecting rod member 30 is fixedly connected to the inner wall surface of one side of the resident chamber 27, and the other end is slidably connected to the valve body 29, and the other end of the valve body 29 is fixedly connected to the inner wall surface of the other side of the resident chamber 27 through the compression spring 31. In addition, a partition wall 32 adapted to the valve body 29 is also arranged in the resident chamber 27. In addition, the valve body 29 is a wax-type mechanical control valve. When the valve body 29 is a wax-type mechanical control valve, the resident chamber 27 also includes an additional temperature sensing inlet (not shown in the figure) and an oil return outlet (not shown in the figure). In addition, the temperature sensing inlet and the oil return outlet are both located on one side of the retention chamber 27 close to the valve body 29, so that the oil flowing from the temperature sensing inlet to the oil return outlet can continue to flow through the valve body 29, that is, the wax bag of the wax-type mechanical control valve, thereby realizing the opening or closing of the wax-type mechanical control valve. In addition, the outlet of the overflow oil channel 23 and the outlet of the guide oil channel 24 are both connected to the temperature sensing inlet; the oil return outlet is connected to the oil pan 21. The wax-type mechanical control valve can deform under high and low temperature conditions, and then can push the connecting rod member 30 to control the opening and closing of the valve to realize the switching of the open and closed state. When the oil needs to be heated, the wax-type mechanical control valve is in a low-temperature closed state; when the oil does not need to be heated, the wax-type mechanical control valve is in a high-temperature open state. By setting the valve body 29 as a wax-type mechanical control valve, the structural characteristics of the wax-type mechanical control valve itself can be used to realize the switching of the temperature control switch valve 28 between the open state and the closed state, without setting other valve control components, reducing the layout difficulty and improving the reliability of the system.
[0055] In other embodiments of the utility model, a temperature sensor 33 is further provided in the resident chamber 27 near the outlet b of the heating oil passage 22, the valve body 29 is an electronic control valve, and the temperature sensor 33 is connected to the electronic control unit 34, and the electronic control unit 34 is connected to the valve body 29. The electronic temperature control valve obtains the oil temperature at the outlet b of the heating oil passage 22 in real time, and transmits the oil temperature data to the electronic control unit 34 in real time. The electronic control unit 34 is pre-set with an oil temperature threshold. When the oil temperature data collected by the temperature sensor 33 reaches the oil temperature threshold, it means that the oil does not need to be heated at this time, and the electronic control unit 34 controls the electronic control valve to be in an open state. In this state, the oil flows to the heating oil passage 22 and the guide oil passage 24 through the high-position oil discharge port 20 and then directly flows into the oil pan 21. When the oil temperature data collected by the temperature sensor 33 does not reach the oil temperature threshold, it means that the oil needs to be heated at this time, and the electronic control unit 34 controls the electronic control valve to be in a closed state. At this time, the oil flows to the overflow oil passage 23 through the high-position oil drain port 20 and the heating oil passage 22, and then reaches the oil pan 21. The valve body 29 is set as an electronic control valve, and its state changes according to the data collected by the temperature sensor 33, with high control accuracy.
[0056] Further, in another preferred embodiment according to the present invention, referring to Figure 2b , the oil circuit switching component 26 is a temperature-controlled three-way valve, which includes an oil inlet and two oil outlets. Among them, one oil inlet of the temperature-controlled three-way valve is connected to the outlet b of the heating oil channel 22, one of the two oil outlets is connected to the inlet c of the overflow oil channel 23, and the other is connected to the inlet d of the guide oil channel 24. In addition, the temperature-controlled three-way valve can be switched between the states in which one oil inlet is connected to the two oil outlets, so that the outlet b of the heating oil channel 22 is connected to the inlet c of the overflow oil channel 23, or to the inlet d of the guide oil channel 24. The oil circuit switching component 26 is set as a temperature-controlled three-way valve, which has a simple structure and a small size, and reduces the difficulty of arranging the resident oil circuit.
[0057] Embodiment 2:
[0058] 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.
[0059] Furthermore, in the engine provided in this embodiment, a retention oil passage as described in the above embodiment 1 is provided between the high-position oil drain port of the engine and the oil pan.
[0060] 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 threshold, the engine oil can flow quickly to the oil pan to prevent the engine oil from coking. In addition, the engine waste heat source is used to directly heat the engine oil, and no additional electric heating components are required, which effectively reduces the cost and improves the heating efficiency and effect of the engine oil.
[0061] Embodiment 3:
[0062] 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 1 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 the need to set up additional electric heating components, which effectively reduces costs and improves the heating efficiency and effect of the oil.
[0063] 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: include: A resident oil passage, the resident oil passage communicating with the high-position oil drain port of the engine and the oil pan, and comprising a heating oil passage, an overflow oil passage, and a guide oil passage; in The inlet of the heating oil passage is communicated with the high-position oil drain port, the outlet of the heating oil passage is communicated with the inlet of the overflow oil passage or the inlet of the guide oil passage, and the outlet of the overflow oil passage and the outlet of the guide oil passage are both communicated with the oil pan; wherein A waste heat source of the engine is arranged around the heating oil passage; and The outlet of the heating oil passage is further provided with an oil passage switching component, and the oil passage switching component can switch the outlet of the heating oil passage to be connected with the inlet of the overflow oil passage, or to be connected with the inlet of the guide oil passage.
2. The engine oil heating system of claim 1, characterized in that: In the vertical direction, the overflow oil passage is located above the guide oil passage; the top position of the overflow oil passage is not higher than the position of the inlet of the heating oil passage; and The overflow oil passage is in a "∩"-shaped structure or a "J"-shaped pipeline structure as a whole.
3. The engine oil heating system of claim 2, characterized in that: The resident oil circuit also includes a resident chamber; and The resident chamber includes an oil circuit inlet and two oil circuit outlets; wherein The outlet of the heating oil passage is in communication with the oil passage inlet of the residence chamber; The inlet of the overflow oil passage and the inlet of the guide oil passage are respectively communicated with the two oil passage outlets of the retention chamber.
4. The engine oil heating system according to any one of claims 1 to 3, characterized in that: The oil circuit switching component is a temperature-controlled switch valve, which is arranged at the entrance of the guide oil channel and can be switched between an open state and a closed state; wherein When the temperature-controlled switch valve is in the closed state, the outlet of the heating oil passage is connected to the inlet of the overflow oil passage; and when the temperature-controlled switch valve is in the open state, the outlet of the heating oil passage is connected to the inlet of the guide oil passage.
5. The engine oil heating system of claim 4, characterized in that: The temperature-controlled switch valve comprises a valve body, a connecting rod component and a compression spring; wherein The valve body and the connecting rod member are arranged in the retention chamber of the retention oil circuit, one end of the connecting rod member is fixedly connected to the inner wall surface of one side of the retention chamber, and the other end is slidably connected to the valve body, and the other end of the valve body is fixedly connected to the inner wall surface of the other side of the retention chamber through the compression spring; The retention chamber is also provided with a partition wall adapted to the valve body; wherein The valve body is a wax-type mechanical control valve; or A temperature sensor is also provided in the retention chamber near the outlet of the heating oil channel. The valve body is an electronically controlled valve, and the temperature sensor is connected to an electronic control unit, which is connected to the valve body.
6. The engine oil heating system of claim 5, characterized in that: When the valve body is the wax-type mechanical control valve, the resident chamber further includes a temperature sensing inlet and an oil return outlet; and The temperature sensing inlet and the oil return outlet are both located on a side of the retention chamber close to the valve body, so that the oil flowing from the temperature sensing inlet to the oil return outlet can continuously flow through the valve body and realize the opening or closing of the wax type mechanical control valve; and The outlet of the overflow oil passage and the outlet of the guide oil passage are both connected to the temperature sensing inlet; The oil return outlet is communicated with the oil pan.
7. The engine oil heating system according to any one of claims 1 to 3, characterized in that: The oil circuit switching component is a temperature-controlled three-way valve, which includes an oil inlet and two oil outlets; The one oil inlet of the temperature control three-way valve is communicated with the outlet of the heating oil passage, one of the two oil outlets is communicated with the inlet of the overflow oil passage, and the other is communicated with the inlet of the guide oil passage; and The temperature-controlled three-way valve can be switched between states in which the one oil inlet is connected to the two oil outlets, so that the outlet of the heating oil passage is connected to the inlet of the overflow oil passage or the inlet of the guide oil passage.
8. The engine oil heating system according to any one of claims 1 to 3, characterized in that: The high-position oil drain port is an oil outlet of a high-position lubricating component corresponding to the upper portion of the engine; and The high-position oil outlet includes: an oil outlet of a supercharger of the engine, and at least one of an oil outlet of a phase modulator, a camshaft, and a hydraulic tappet corresponding to an upper portion of the engine; and The waste heat source is the catalyst assembly of the engine or the exhaust pipe of the engine; The heating oil channel comprises an oil collecting section and a heating section, wherein the oil collecting section is located above the heating section in the vertical direction; The inlet of the oil collecting section is communicated with the high-position oil discharge port, and the outlet is communicated with the inlet of the heating section, and the outlet of the heating section is communicated with the inlet of the resident chamber of the resident oil circuit; and The heating section surrounds the tubular structure on the periphery of the waste heat source; and In the vertical direction, the inlet of the heating section is higher than the position of the outlet of the heating section, and the direction of the heating section continuously decreases from the inlet of the heating section to the outlet of the heating section; and A heating plate is also fixedly arranged on the outer side of the tube wall of the heating section.
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.