Engine system, vehicle and control method

Abstract

The present application provides an engine system, a vehicle and a control method, which relate to the field of engine technology. The engine control system includes: a controller, an oil thermal management component, a body and an oil pan. The oil thermal management component includes a thermostat and a cooler. The first port of the cooler is connected to the oil pan, the second port is connected to the body, and the third port is connected to the body through the cooler. The first port and the second port constitute a first oil passage, and the first port and the third port constitute a second oil passage. The controller controls the opening and closing of the first oil passage and the second oil passage based on the first temperature and the second temperature. The first temperature is the oil temperature of the oil pan, and the second temperature is the temperature before the cooler cools the oil. The cooler can adjust the temperature of the oil, so the controller can control the opening and closing of the first oil passage and the second oil passage based on the first temperature and the second temperature, thereby controlling the oil delivery path to achieve the purpose of adjusting the oil temperature.

Description

Technical Field

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

[0002] Engine oil is known as the blood of the engine, and it plays the role of lubrication, cleaning, cooling, sealing, friction reduction, rust prevention, and corrosion prevention. During the operation of the engine, the engine oil temperature is high and the oil viscosity is low. It is not easy to form a sufficiently thick oil film on the friction surface, and the load-bearing capacity is poor, which will cause the parts to wear out due to insufficient lubrication. At the same time, too low oil viscosity will also cause poor sealing, leading to blowby and oil burning in the combustion chamber, which will lead to low engine power. Therefore, during the operation of the engine, keeping the oil temperature in the appropriate range is of great significance for giving full play to the energy efficiency of the engine, extending the service life of the engine and reducing energy consumption.

[0003] At present, engines usually use mechanical oil thermostats to cool the oil to control the oil temperature. Mechanical oil thermostats generally control the oil not to go to the oil cooler when the temperature is below 100°C, and water and oil do not exchange heat. When the temperature is above 100°C, the oil is controlled to go to the oil cooler and water is used to exchange heat and cool the oil. For some engines, such as natural gas engines and methanol engines, if a mechanical oil thermostat is used, the water temperature is higher than the oil temperature at startup, and the oil thermostat controls the oil not to go to the oil cooler, resulting in water being unable to heat the oil, slow oil heating, easy emulsification, and poor economy. If a mechanical oil thermostat is not used, the water temperature in the common operating area is 80 to 90 degrees Celsius, and the oil temperature is limited by the water temperature and cannot be further increased, which also leads to poor economy. Summary of the invention

[0004] In view of this, the present application provides an engine system and a control method, the scheme is as follows:

[0005] An engine system includes: a controller, an oil thermal management component, an engine body, and an oil pan;

[0006] The oil thermal management component includes a thermostat and a cooler, the thermostat having a first port, a second port and a third port, the first port being in communication with the oil pan, the second port being in communication with the engine body, and the third port being in communication with the engine body via the cooler; wherein the first port and the second port constitute a first oil delivery passage, the first port and the third port constitute a second oil delivery passage, the oil in the oil pan is delivered to the engine body through the first oil delivery passage, and the oil in the oil pan is also delivered to the engine body through the second oil delivery passage;

[0007] The controller controls the opening and closing of the first oil delivery passage and the second oil delivery passage based on a first temperature and a second temperature to control the oil delivery path and cause the oil temperature in the engine body to be within a preset range; wherein the first temperature is the oil temperature of the oil pan, and the second temperature is the temperature before the cooler cools the oil.

[0008] Optionally, it also includes:

[0009] a first temperature sensor, the first temperature sensor being disposed between the oil pan and the engine body and being used to obtain the first temperature;

[0010] A second temperature sensor is disposed on the cooler and is used to obtain the second temperature.

[0011] Optionally, the cooler comprises a circulation pipeline and a first working pump, the circulation pipeline has a cooling medium, and the first working pump is used to circulate the cooling medium;

[0012] The second temperature sensor is arranged in the circulation pipeline.

[0013] Optionally, it also includes:

[0014] a first oil pipeline, one end of the first oil pipeline is connected to the oil pan, and the other end is connected to the first port, and the first temperature sensor is located in the first oil pipeline;

[0015] a second oil pipeline, one end of the second oil pipeline being connected to the second port and the other end being connected to the body;

[0016] a third oil pipeline, one end of which is connected to the third port, and the other end of which is connected to the engine body; wherein at least a portion of the third oil pipeline is located in the cooler, and the second temperature sensor is located between the first working pump and the third oil pipeline.

[0017] Optionally, it also includes:

[0018] a second working pump, the second working pump being arranged in the first oil delivery pipeline and being used for delivering the engine oil in the oil pan;

[0019] The first temperature sensor is located between the second working pump and the oil pan.

[0020] Optionally, the thermostat is an electronically controlled thermostat, which is communicatively connected to the controller.

[0021] A vehicle comprises the engine system described in any one of the above embodiments.

[0022] A control method is applied to an engine system, the engine system comprising a controller, an oil thermal management component, a body and an oil pan, the oil thermal management component comprising a thermostat and a cooler, the thermostat having a first port, a second port and a third port, the first port being in communication with the oil pan, the second port being in communication with the body, and the third port being in communication with the body via the cooler; wherein the first port and the second port constitute a first oil delivery passage, the first port and the third port constitute a second oil delivery passage, the oil in the oil pan is delivered to the body via the first oil delivery passage, and the oil in the oil pan is also delivered to the body via the second oil delivery passage; the control method comprises:

[0023] The controller controls the opening and closing of the first oil delivery passage and the second oil delivery passage based on a first temperature and a second temperature to control the oil delivery path and cause the oil temperature in the engine body to be within a preset range; wherein the first temperature is the oil temperature of the oil pan, and the second temperature is the temperature before the cooler cools the oil.

[0024] Optionally, the controller controls the opening and closing of the first oil delivery passage and the second oil delivery passage based on the first temperature and the second temperature, comprising:

[0025] acquiring the first temperature and the second temperature;

[0026] comparing the first temperature with a temperature limit value, the temperature limit value being an upper limit value of the oil pan oil temperature;

[0027] If the first temperature is less than the temperature limit, comparing the first temperature and the second temperature;

[0028] If the first temperature is greater than the second temperature, the controller controls the first oil delivery passage to open, and the oil in the oil pan is delivered to the engine body through the first oil delivery passage;

[0029] If the first temperature is lower than the second temperature, the controller controls the second oil delivery passage to open, and the engine oil in the oil pan is delivered to the engine body through the second oil delivery passage.

[0030] Optionally, the controller controls the opening and closing of the first oil delivery passage and the second oil delivery passage based on the first temperature and the second temperature, further comprising:

[0031] If the first temperature is greater than the temperature limit, the controller controls the second oil delivery passage to open, and the oil in the oil pan is delivered to the engine body through the second oil delivery passage.

[0032] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0033] The engine control system includes: a controller, an oil thermal management component, a body and an oil pan. The oil thermal management component includes a thermostat and a cooler, a first port of the cooler is connected to the oil pan, a second port is connected to the body, and a third port is connected to the body through the cooler, and the first port and the second port constitute a first oil delivery passage, and the first port and the third port constitute a second oil delivery passage. The controller controls the opening and closing of the first oil delivery passage and the second oil delivery passage based on the first temperature and the second temperature to control the delivery path of the oil.

[0034] The first temperature is the oil temperature of the oil pan, and the second temperature is the temperature before the cooler cools the oil. Since the cooler can adjust the temperature of the oil, the controller controls the on-off of the first oil delivery passage and the second oil delivery passage based on the first temperature and the second temperature, and then controls the oil delivery path, so as to achieve the purpose of adjusting the oil temperature, so as to keep the oil temperature of the engine body within a preset range, and effectively avoid the oil temperature being too high or too low, which affects the operation of the engine. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the related technologies, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0036] The structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with this technology. They are not used to limit the conditions under which this application can be implemented, and therefore have no substantive technical significance. Any structural modification, change in proportion or adjustment of size, without affecting the effects and purposes that can be achieved by this application, should still fall within the scope of the technical contents disclosed in this application.

[0037] Figure 1 A schematic diagram of the structure of an engine system provided in this application;

[0038] Figure 2 A structural schematic diagram of another engine system provided for this application;

[0039] Figure 3 A flow chart of a control method provided for this application;

[0040] Figure 4 A flow chart of another control method provided for this application. DETAILED DESCRIPTION

[0041] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the embodiments in the present application. Obviously, the described embodiments are only embodiments of one area of ​​the present application, not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0042] In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, the present application is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0043] As described in the background technology section, the related art uses a mechanical oil thermostat to control the oil temperature. However, due to the working characteristics of the mechanical oil thermostat, the oil utilization rate is low and the economy is poor.

[0044] Based on the above, the present application provides an engine system, such as Figure 1 As shown, Figure 1 This is a structural schematic diagram of an engine system provided in the present application, the engine system comprises: a controller 100, an oil thermal management component 200, a body 300 and an oil pan 400. The controller 100 may be an electronic control unit (ECU).

[0045] The oil thermal management assembly 200 includes a thermostat 210 and a cooler 220. The thermostat 210 has a first port 211, a second port 212, and a third port 213. The first port 211 is in communication with the oil pan 400, the second port 212 is in communication with the engine body 300, and the third port 213 is in communication with the engine body 300 through the cooler 220. The first port 211 and the second port 212 constitute a first oil delivery passage, and the first port 211 and the third port 213 constitute a third oil delivery passage. The oil in the oil pan 400 is transported to the engine body 300 through the first oil delivery passage, and the oil in the oil pan 400 is also transported to the engine body 300 through the second oil delivery passage.

[0046] The controller 100 controls the opening and closing of the first oil delivery passage and the second oil delivery passage based on the first temperature and the second temperature, that is, the controller 100 controls the first oil delivery passage to be opened and the second oil delivery passage to be disconnected based on the first temperature and the second temperature, and the oil in the oil pan 400 is delivered to the engine body 300 through the first oil delivery passage, or the controller 100 controls the first oil delivery passage to be disconnected and the second oil delivery passage to be opened based on the first temperature and the second temperature, and the oil in the oil pan 400 is delivered to the engine body 300 through the second oil delivery passage, or the controller 100 controls the first oil delivery passage and the second oil delivery passage to be opened based on the first temperature and the second temperature, and the oil in the oil pan 400 is delivered to the engine body 300 through the first oil delivery passage and the second oil delivery passage at the same time. That is to say, the controller 100 can control the delivery path of the oil based on the first temperature and the second temperature.

[0047] Among them, the first temperature is the oil temperature of the oil pan 400, and the second temperature is the temperature before the cooler 220 cools the oil. Specifically, the second temperature is the temperature of the cooling medium before the cooler 220 cools the oil. Since the cooler 220 can adjust the temperature of the oil, the controller 100 controls the on-off of the first oil delivery passage and the second oil delivery passage based on the first temperature and the second temperature, and then controls the delivery path of the oil, which can achieve the purpose of adjusting the oil temperature, and make the oil temperature of the body 300 within the preset range, effectively avoiding the oil temperature being too high or too low, which affects the operation of the engine. It should be noted that the above preset range can be determined according to the situation of the engine system itself, and this application does not limit this.

[0048] Based on the foregoing embodiments, in one embodiment of the present application, Figure 1 As shown, the engine system also includes:

[0049] The first temperature sensor 501 is disposed between the oil pan 400 and the engine body 300 and is in communication connection with the controller 100 for acquiring a first temperature.

[0050] The second temperature sensor 502 is disposed in the cooler 220 and is in communication with the controller 100 for acquiring a second temperature.

[0051] The controller 100 can control the first temperature sensor 501 and the second temperature sensor 502 to obtain the first temperature and the second temperature at a certain frequency, so that the first temperature and the second temperature can be obtained in real time, and then the oil temperature can be adjusted in real time based on the first temperature and the second temperature, and the oil temperature can be adjusted more accurately.

[0052] Based on the above embodiments, in one embodiment of the present application, Figure 2 As shown, Figure 2This is a structural schematic diagram of an engine system provided by the present application. The cooler 220 includes a circulation pipe 221 and a first working pump 222. The cooling medium of the cooler 220 is stored in the circulation pipe 221. The first working pump 222 is used to circulate the cooling medium stored in the circulation pipe 221 to achieve the purpose of cooling the engine oil. Among them, the second temperature sensor 502 is arranged in the circulation pipe 221, specifically arranged at the initial position of the circulation of the cooling medium, for example, along the circulation direction of the cooling medium, and the second temperature sensor is arranged on the rear side of the first working pump 222.

[0053] Based on the foregoing embodiments, in one embodiment of the present application, Figure 2 As shown, the engine system also includes:

[0054] The first oil pipeline 601 has one end connected to the oil pan 400 and the other end connected to the first port 211, that is, the first port 211 of the thermostat 210 is connected to the oil pan 400 through the first oil pipeline 601, and the oil in the oil pan 400 is transported to the thermostat 210 through the first oil pipeline 601. The first temperature sensor 501 is disposed in the first oil pipeline 601, and then the first temperature sensor 501 can obtain the oil temperature of the oil pan 400, that is, the first temperature sensor 501 can obtain the first temperature.

[0055] The second oil pipeline 602 has one end connected to the second port 212 and the other end connected to the engine body 300, that is, the second port 212 of the thermostat 210 is connected to the engine body 300 through the second oil pipeline 602, and the oil transported to the thermostat 210 through the first oil pipeline 601 can be transported to the engine body through the first oil passage and the second oil pipeline 602 in sequence.

[0056] The third oil pipeline 603 has one end connected to the third port and the other end connected to the engine body 300, that is, the third port 213 of the thermostat 210 is connected to the engine body 300 through the third oil pipeline 603, and the oil delivered to the thermostat 210 through the first oil pipeline 601 can be delivered to the engine body through the second oil passage and the third oil pipeline 603 in sequence. In addition, at least part of the third oil pipeline 603 is located in the cooler 220, specifically, the area where the third oil pipeline 603 is located at least partially overlaps with the area where the circulation pipeline 221 is located, so that the cooler 220 can adjust the temperature of the oil delivered to the engine body 300.

[0057] It should be noted that the second temperature sensor 502 is arranged between the first working pump 222 and the third oil pipeline 603. Specifically, if the overlapping area of ​​the third oil pipeline 603 and the circulation pipeline 221 is the cooling area, the second temperature sensor 502 is arranged between the first working pump 222 and the above-mentioned cooling area.

[0058] Based on the foregoing embodiments, in one embodiment of the present application, Figure 2 As shown, the engine system also includes:

[0059] The second working pump 604 is disposed in the first oil pipeline 601 and is used to transport the engine oil in the oil pan 400 so that the engine oil in the oil pan 400 can be transported to the thermostat and then transported to the engine body 300 through the first oil passage and the second oil passage.

[0060] Based on the above embodiments, in one embodiment of the present application, the thermostat 210 is an electronically controlled thermostat, which is connected to the controller 100 in communication, so that the controller 100 can control the switch of the second port 212 and the third port 213 based on the first temperature and the second temperature, thereby controlling the oil delivery path. Compared with the traditional mechanical thermostat, the electronically controlled thermostat regulates the oil delivery path by the oil temperature and the temperature of the cooling medium, effectively avoiding the limitation of the cooling medium temperature on the oil temperature, helping to improve the utilization efficiency of the oil, and thus being more economical.

[0061] Based on the engine system described in any of the above embodiments, the present application also provides a vehicle, which includes the engine system described in any of the above embodiments.

[0062] At the same time, based on the engine system described in any of the above embodiments, the present application also provides a control method, which is applied to the engine system, such as Figure 1 As shown, the engine system includes: a controller 100, an oil thermal management component 200, a body 300 and an oil pan 400. The oil thermal management component 200 includes a thermostat 210 and a cooler 220. The thermostat 210 has a first port 211, a second port 212 and a third port 213. The first port 211 is connected to the oil pan 400, the second port 212 is connected to the body 300, and the third port 213 is connected to the body 300 through the cooler 220. The first port 211 and the second port 212 constitute a first oil transfer passage, and the first port 211 and the third port 213 constitute a third oil transfer passage. The oil in the oil pan 400 is transported to the body 300 through the first oil transfer passage, and the oil in the oil pan 400 is also transmitted to the body 300 through the second oil transfer passage. Based on the above, Figure 3 As shown, Figure 3A flow chart of a control method provided in this application, the control method comprising:

[0063] S1: The controller 100 controls the opening and closing of the first oil delivery passage and the second oil delivery passage based on the first temperature and the second temperature to control the delivery path of the engine oil. Specifically, the controller 100 controls the first oil delivery passage to be opened and the second oil delivery passage to be disconnected based on the first temperature and the second temperature, and the engine oil in the oil pan 400 is delivered to the engine body 300 through the first oil delivery passage, or the controller 100 controls the first oil delivery passage to be disconnected and the second oil delivery passage to be opened based on the first temperature and the second temperature, and the engine oil in the oil pan 400 is delivered to the engine body 300 through the second oil delivery passage, or the controller 100 controls the first oil delivery passage to be opened and the second oil delivery passage to be opened based on the first temperature and the second temperature, and the engine oil in the oil pan 400 is delivered to the engine body 300 through the first oil delivery passage and the second oil delivery passage at the same time. That is to say, the controller 100 can control the delivery path of the engine oil based on the first temperature and the second temperature to make the engine oil temperature in the engine body 300 within a preset range. It should be noted that the above preset range can be set according to the situation of the engine system itself, and this application does not limit this.

[0064] The first temperature is the oil temperature of the oil pan 400 , and the second temperature is the temperature before the cooler 220 cools the oil. Specifically, the second temperature is the temperature of the cooling medium before the cooler 220 cools the oil.

[0065] Based on the above, since the first temperature is the oil temperature of the oil pan 400, and the second temperature is the temperature before the cooler 220 cools the oil, and the cooler 220 can adjust the temperature of the oil, the controller 100 controls the on-off of the first oil delivery passage and the second oil delivery passage based on the first temperature and the second temperature, and then controls the delivery path of the oil, so as to achieve the purpose of adjusting the oil temperature, and make the oil temperature of the engine body 300 within the preset range, so as to effectively avoid the oil temperature being too high or too low, which affects the operation of the engine.

[0066] Based on the above embodiments, in one embodiment of the present application, for step S1, the controller 100 controls the on / off of the first oil delivery passage and the second oil delivery passage based on the first temperature and the second temperature, including:

[0067] Get the first temperature and the second temperature.

[0068] The first temperature is compared with a temperature limit value, which is an upper limit value of the temperature of the oil in the oil pan 400 .

[0069] If the first temperature is less than the temperature limit, that is, the oil temperature of the oil pan 400 is lower than the maximum oil temperature that the engine can withstand, the first temperature is compared with the second temperature, that is, the oil temperature of the oil pan 400 and the temperature of the cooler 200 before the oil is cooled.

[0070] If the first temperature is greater than the second temperature, that is, the oil temperature of the oil pan 400 is greater than the temperature of the cooling medium of the cooler 220, the controller 100 controls the first oil delivery path to be opened, and the oil in the oil pan 400 is delivered to the engine body 300 through the first oil delivery path, that is, at this time, the oil in the oil pan 400 does not pass through the cooling path, but is directly delivered to the engine body 300. It should be noted that the oil temperature in the oil pan 400 is greater than the temperature of the cooling medium of the cooler 220, but less than the upper limit of the oil temperature, so it does not need to be cooled. If the oil is delivered to the engine body 300 through the cooling path at this time, the engine energy efficiency may be affected due to the decrease in the oil temperature. Therefore, when the first temperature is greater than the second temperature, but less than the temperature limit, the controller controls the first oil delivery path of the thermostat 210 to be opened, the second oil delivery path to be closed, and the oil is directly delivered to the engine body 300 through the first oil delivery path.

[0071] If the first temperature is lower than the second temperature, that is, the oil temperature of the oil pan 400 is lower than the temperature of the cooling medium of the cooler 220, this situation usually occurs in the initial stage of engine startup, when the oil temperature is relatively low and the oil needs to be heated. Therefore, in this case, the controller 100 can control the second oil delivery passage of the thermostat 210 to open and the first oil delivery passage to close, and the oil in the oil pan 400 is transmitted through the second oil delivery passage to be heated by the cooling medium of the cooler 220 and then transmitted to the engine body 300, which effectively solves the problem of low oil temperature in the initial stage of engine startup and helps to improve the energy efficiency of the engine.

[0072] Based on the above embodiments, in one embodiment of the present application, for step S1, the controller 100 controls the on / off of the first oil delivery passage and the second oil delivery passage based on the first temperature and the second temperature, further comprising:

[0073] If the first temperature is greater than the above temperature limit, the controller 100 can also control the second oil supply passage to open, and the oil in the oil pan 400 is transported to the engine body 300 through the second oil supply passage to cool the oil, effectively avoiding excessive oil temperature and ensuring engine performance.

[0074] Based on the above embodiments, in one embodiment of the present application, for step S1, the controller 100 controls the on / off of the first oil delivery passage and the second oil delivery passage based on the first temperature and the second temperature, further comprising:

[0075] If the first temperature is lower than the second temperature, that is, the oil temperature of the oil pan 400 is lower than the temperature of the cooling medium of the cooler 220, the controller 100 can also control the first oil passage and the second oil passage of the thermostat 210 to be opened, and the oil in the oil pan 400 is simultaneously delivered to the engine body through the first oil passage and the second oil passage. Since the oil temperature will also rise after the engine is started, the oil can also be heated by the cooler 220 and the temperature rise of the engine itself at the initial stage of the engine start, which can effectively solve the problem of low oil temperature at the initial stage of the engine start and help improve the energy efficiency of the engine.

[0076] A control method improved by the present application is described in detail below through a flow chart.

[0077] Specifically, Figure 4 As shown, the controller 100 controls the first temperature sensor 501 and the second temperature sensor 502 to continuously obtain the first temperature T1 and the second temperature T2, and compares the first temperature T1 with the temperature limit T. If the first temperature T1 is less than the temperature limit T, the first temperature T1 and the second temperature T2 are compared. If the first temperature T1 is greater than the second temperature T2, that is, the first temperature T1 is less than the temperature limit T and greater than the second temperature T2, the controller 100 controls the first oil passage of the thermostat 210 to open and the second oil passage to close, and the oil in the oil pan 400 is directly transported to the engine body through the first oil passage, and will not be cooled by the cooler. If the first temperature T1 is less than the second temperature T2, it means that the engine is in the initial stage of starting and the oil temperature is low. The controller 100 controls the second oil passage of the thermostat 210 to open and the first oil passage to close, and the oil in the oil pan 400 is transported to the engine body 300 after being deheated by the cooling medium in the cooler 220 through the second oil passage, which can effectively solve the problem of low oil temperature in the initial stage of engine starting.

[0078] In addition, if the first temperature T1 is compared with the temperature limit T, when the first temperature T1 is greater than the temperature limit T, it means that the oil temperature is too high and has exceeded the upper limit of the engine, and the oil needs to be cooled. At this time, the controller 100 can control the second oil passage of the thermostat 210 to open and the first oil passage to close, and the oil in the oil pan 400 is cooled by the cooler 220 through the second oil passage and then transported to the engine body 300, effectively avoiding the problem of excessive oil temperature during the operation of the engine.

[0079] It should be noted that during the opening of the first oil pipeline and / or the second oil pipeline, the controller 100 will also control the first temperature sensor 501 and the second temperature sensor 502 to continuously obtain the first temperature and the second temperature, so as to make real-time adjustments to the oil pipeline according to the obtained first temperature and second temperature.

[0080] As can be seen from the above, for the mechanical thermostat, the engine system and control method provided by the present application are provided with a first temperature sensor and a second temperature sensor at corresponding positions to obtain the oil temperature of the oil pan and the cooling medium temperature of the cooler (such as the temperature of the cooling water) respectively. Based on the oil temperature and the temperature of the cooling medium, the controller controls the on-off of the oil delivery passage of the electronically controlled thermostat, thereby controlling the delivery path of the oil. Specifically, when the oil temperature is lower than the water temperature at the initial start of the engine, the electronically controlled thermostat controls the oil to pass through the cooler, and the cooling water heats the oil, quickly warms up the engine, slows down the emulsification of the oil, and improves the economy; when the oil temperature gradually rises to a temperature higher than the water temperature and less than the temperature limit, the electronically controlled thermostat controls the oil to enter the engine body directly without passing through the cooler, so that the oil temperature can be further increased without being limited by the water temperature, and the economy is improved; and when the oil temperature exceeds the temperature limit, the electronically controlled thermostat controls the oil to pass through the cooler, and the water cools the oil to ensure reliability.

[0081] In summary, the present application provides an engine system and a control method, the engine control system comprising: the engine control system comprising: a controller, an oil thermal management component, a body and an oil pan. The oil thermal management component comprises a thermostat and a cooler, the first port of the cooler is connected to the oil pan, the second port is connected to the body, the third port is connected to the body through the cooler, and the first port and the second port constitute a first oil delivery passage, and the first port and the third port constitute a second oil delivery passage. The controller controls the opening and closing of the first oil delivery passage and the second oil delivery passage based on the first temperature and the second temperature to control the delivery path of the oil.

[0082] The first temperature is the oil temperature of the oil pan, and the second temperature is the temperature before the cooler cools the oil. Since the cooler can adjust the temperature of the oil, the controller controls the on-off of the first oil delivery passage and the second oil delivery passage based on the first temperature and the second temperature, and then controls the oil delivery path, so as to achieve the purpose of adjusting the oil temperature, so as to keep the oil temperature of the engine body within a preset range, and effectively avoid the oil temperature being too high or too low, which affects the operation of the engine.

[0083] In this specification, each embodiment is described in a progressive, parallel, or progressive and parallel manner. Each embodiment focuses on the differences from other embodiments, and the same or similar areas between the embodiments can be referred to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the method area description.

[0084] It should be noted that in the description of the present application, it should be understood that the terms "upper", "lower", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, which are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. When a component is considered to be "connected" to another component, it may be directly connected to the other component or there may be a centrally arranged component at the same time.

[0085] It should also be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "comprises", "comprising" or any other variants thereof are intended to cover non-exclusive inclusion, so that an article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such article or device. In the absence of further restrictions, the elements defined by the sentence "comprising a ..." do not exclude the existence of other identical elements in the article or device including the above elements.

[0086] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An engine system, characterized in that: include: controller, oil thermal management components, engine block and oil pan; The oil thermal management component includes a thermostat and a cooler, the thermostat having a first port, a second port and a third port, the first port being in communication with the oil pan, the second port being in communication with the engine body, and the third port being in communication with the engine body via the cooler; wherein the first port and the second port constitute a first oil delivery passage, the first port and the third port constitute a second oil delivery passage, the oil in the oil pan is delivered to the engine body through the first oil delivery passage, and the oil in the oil pan is also delivered to the engine body through the second oil delivery passage; The controller controls the opening and closing of the first oil delivery passage and the second oil delivery passage based on a first temperature and a second temperature to control the delivery path of the engine oil and make the engine oil temperature in the engine body within a preset range, wherein the first temperature is the engine oil temperature of the oil pan, and the second temperature is the temperature before the cooler cools the engine oil; The controller obtains the first temperature and the second temperature, compares the first temperature with a temperature limit, and the temperature limit is an upper limit of the oil temperature in the oil pan; if the first temperature is less than the temperature limit, compares the first temperature with the second temperature; if the first temperature is greater than the second temperature, the controller controls the first oil passage to be opened, and the oil in the oil pan is transported to the engine body through the first oil passage; if the first temperature is less than the second temperature, the controller controls the second oil passage to be opened, and the oil in the oil pan is transported to the engine body through the second oil passage.

2. The engine system according to claim 1, characterized in that: Also includes: a first temperature sensor, the first temperature sensor being disposed between the oil pan and the engine body and being used to obtain the first temperature; A second temperature sensor is disposed on the cooler and is used to obtain the second temperature.

3. The engine system according to claim 2, characterized in that: The cooler comprises a circulation pipeline and a first working pump, wherein the circulation pipeline has a cooling medium, and the first working pump is used to circulate the cooling medium; The second temperature sensor is arranged in the circulation pipeline.

4. The engine system according to claim 3, characterized in that: Also includes: a first oil pipeline, one end of the first oil pipeline is connected to the oil pan, and the other end is connected to the first port, and the first temperature sensor is located in the first oil pipeline; a second oil pipeline, one end of the second oil pipeline being connected to the second port and the other end being connected to the body; a third oil pipeline, one end of which is connected to the third port, and the other end of which is connected to the engine body; wherein at least a portion of the third oil pipeline is located in the cooler, and the second temperature sensor is located between the first working pump and the third oil pipeline.

5. The engine system according to claim 4, characterized in that: Also includes: a second working pump, the second working pump being arranged in the first oil delivery pipeline and being used for delivering the engine oil in the oil pan; The first temperature sensor is located between the second working pump and the oil pan.

6. The engine system according to claim 1, characterized in that: The thermostat is an electronically controlled thermostat and is in communication with the controller.

7. A vehicle, characterized in that: An engine system comprising any one of claims 1-6.

8. A control method, characterized in that: Applied to an engine system, the engine system includes a controller, an oil thermal management component, a body and an oil pan, the oil thermal management component includes a thermostat and a cooler, the thermostat has a first port, a second port and a third port, the first port is communicated with the oil pan, the second port is communicated with the body, and the third port is communicated with the body through the cooler; wherein the first port and the second port constitute a first oil delivery passage, the first port and the third port constitute a second oil delivery passage, the oil in the oil pan is delivered to the body through the first oil delivery passage, and the oil in the oil pan is also delivered to the body through the second oil delivery passage; the control method includes: The controller controls the opening and closing of the first oil delivery passage and the second oil delivery passage based on a first temperature and a second temperature to control the delivery path of the engine oil, so as to make the engine oil temperature in the engine body within a preset range; wherein the first temperature is the engine oil temperature of the oil pan, and the second temperature is the temperature before the cooler cools the engine oil; The controller controls the opening and closing of the first oil delivery passage and the second oil delivery passage based on the first temperature and the second temperature, including: acquiring the first temperature and the second temperature; comparing the first temperature with a temperature limit value, the temperature limit value being an upper limit value of the oil pan oil temperature; If the first temperature is less than the temperature limit, comparing the first temperature and the second temperature; If the first temperature is greater than the second temperature, the controller controls the first oil delivery passage to open, and the oil in the oil pan is delivered to the engine body through the first oil delivery passage; If the first temperature is lower than the second temperature, the controller controls the second oil delivery passage to open, and the engine oil in the oil pan is delivered to the engine body through the second oil delivery passage.

9. The control method according to claim 8, characterized in that: The controller controls the opening and closing of the first oil delivery passage and the second oil delivery passage based on the first temperature and the second temperature, and further includes: If the first temperature is greater than the temperature limit, the controller controls the second oil delivery passage to open, and the oil in the oil pan is delivered to the engine body through the second oil delivery passage.

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