Lubricating system and vehicle

Abstract

The invention discloses a lubricating system and a vehicle. The lubricating system comprises an oil pan, a main oil duct, a high-voltage driving electronic pump, a third pressure sensor and a controller. The high-voltage driving electronic pump is respectively communicated with the oil pan and the main oil duct; the high-voltage driving electronic pump is used for providing lubricating oil in the oil pan to the main oil duct; the third pressure sensor is positioned in the main oil duct; the main oil duct is used for transmitting lubricating oil to each lubricating component; the controller is electrically connected with the high-voltage driving electronic pump and the third pressure sensor; the controller is used for determining the current set pressure value of the main oil duct according to the current rotating speed and the current torque of the engine; and according to a third pressure value obtained by the third pressure sensor and the current set pressure value, the required power of the high-voltage driving electronic pump is determined, and the high-voltage driving electronic pump is controlled to operate at the required power. According to the technical scheme, the lubricating effect of the lubricating system on the lubricating component can be improved, and then the operation reliability and stability of the engine are improved.

Description

Technical Field

[0001] The present invention relates to the field of automobile technology, and in particular to a lubrication system and a vehicle. Background Art

[0002] To ensure the normal operation of the engine, it is necessary to provide sufficient, clean, and temperature-appropriate lubricating oil to various engine parts, such as the main journal, connecting rod journal, timing chain, camshaft, etc. Driven by a mechanical pump, the lubricating oil circulates continuously inside the engine along a series of oil channels, consuming a certain amount of energy.

[0003] The prior art provides lubricating oil to the lubricating parts in the engine by setting a mechanical pump connected to the engine. However, since the power source of the mechanical pump is the engine, when the engine speed is slow, the pressure or flow provided by the mechanical pump to the lubricating parts is also small, which may cause insufficient lubrication of the parts in the engine, thereby causing dry grinding. Therefore, how to improve the lubrication reliability of the lubrication system and thus improve the operating stability of the engine has become a technical problem that needs to be solved urgently. Summary of the invention

[0004] The present invention provides a lubrication system and a vehicle, which can improve the lubrication effect of the lubrication system on lubricated parts, thereby improving the working reliability of the lubricated parts and the operating reliability and stability of the engine.

[0005] In a first aspect, the present invention provides a lubrication system, comprising: an oil pan, a main oil channel, a high voltage driven electronic pump, a third pressure sensor and a controller;

[0006] The high-voltage driven electronic pump is communicated with the oil pan and the main oil gallery respectively; the high-voltage driven electronic pump is used to supply the lubricating oil in the oil pan to the main oil gallery;

[0007] The third pressure sensor is located in the main oil passage; the main oil passage is used to transmit lubricating oil to various lubricating components;

[0008] The controller is electrically connected to the high-voltage driven electronic pump and the third pressure sensor; the controller is used to determine the current set pressure value of the main oil channel according to the current speed and current torque of the engine; determine the required power of the high-voltage driven electronic pump according to the third pressure value obtained by the third pressure sensor and the current set pressure value, and control the high-voltage driven electronic pump to operate at the required power.

[0009] Optionally, the controller is specifically configured as:

[0010] Based on a second mapping relationship between the rotational speed, the torque and the set pressure value of each lubricating component, according to the current rotational speed and the current torque, determine the current sub-set pressure value of each lubricating component;

[0011] The maximum value among the current sub-set pressure values ​​is used as the current set pressure value.

[0012] Optionally, the controller is specifically configured as:

[0013] Determining whether the absolute value of the difference between the third pressure value and the current set pressure value is greater than a second preset value;

[0014] If so, the operating power corresponding to the current set pressure value is determined as the current required power according to the third mapping relationship between the set pressure value and the operating power.

[0015] Optionally, the lubrication system further includes: a solenoid valve, a fourth pressure sensor, a piston cooling nozzle oil passage, and at least one piston cooling nozzle;

[0016] The solenoid valve is communicated with the main oil passage and the piston cooling nozzle oil passage respectively;

[0017] The piston cooling nozzle oil passage is used to transmit the lubricating oil to the piston cooling nozzle; the piston cooling nozzle is used to spray the lubricating oil to the piston; the lubricating component includes the piston;

[0018] The fourth pressure sensor is located in the piston cooling nozzle oil passage;

[0019] The controller is also electrically connected to the solenoid valve and the fourth pressure sensor, and is also used to determine the current required pressure value of the piston cooling nozzle oil channel according to the current speed and the current torque; and adjust the opening degree of the solenoid valve based on the PID algorithm according to the fourth pressure value obtained by the fourth pressure sensor and the current required pressure value.

[0020] Optionally, the controller is also used to control the high voltage driven electronic pump to operate when a pre-start signal of the engine is obtained.

[0021] Optionally, the controller is also electrically connected to the engine, and is also used to, when a pre-start signal of the engine is obtained, control the high voltage driven electronic pump to operate, and obtain the third pressure value obtained by the third pressure sensor in real time; if the absolute value of the difference between the third pressure value and the preset pressure value is less than the preset difference, the engine is controlled to start running.

[0022] Optionally, the controller is also used to control the high-voltage driven electronic pump to continue running when a braking signal or a shutdown signal of the engine is obtained until the engine stops running.

[0023] Optionally, the lubrication system further includes: an electric control valve, a cooler and a temperature sensor;

[0024] The electronically controlled valve comprises a liquid inlet, a first liquid outlet and a second liquid outlet; the liquid inlet is communicated with the high voltage driven electronic pump, the first liquid outlet is communicated with the inlet of the cooler, and the second liquid outlet is communicated with the main oil gallery; the electronically controlled valve is used to control the flow of lubricating oil entering the cooler and the flow of lubricating oil entering the main oil gallery;

[0025] The outlet of the cooler is in communication with the main oil channel;

[0026] The controller is also electrically connected to the temperature sensor and the electric control valve. The controller is also used to determine the required opening state of the electric control valve according to the current temperature signal obtained by the temperature sensor, and control the electric control valve to operate in the required opening state.

[0027] Optionally, the controller is configured to:

[0028] Determining whether the current temperature signal is less than a first temperature setting value;

[0029] If so, it is determined that the required opening state is the first opening state, and the electrically controlled valve is controlled to operate in the required opening state; when the electrically controlled valve is in the first opening state, the opening of the second liquid outlet of the electrically controlled valve is 100%, and the opening of the first liquid outlet is 0%.

[0030] Optionally, the controller is configured as:

[0031] If the current temperature signal is greater than or equal to the first temperature setting value, determining whether the current temperature signal is less than or equal to a second temperature setting value; the first temperature setting value is less than the second temperature setting value;

[0032] If so, according to a first mapping relationship between the temperature signal and the set opening, the set opening corresponding to the current temperature signal is used as a first required opening of the first liquid outlet of the electric control valve;

[0033] According to the first required opening of the first liquid outlet, the second required opening of the second liquid outlet is determined, and the opening of the first liquid outlet of the electric control valve is controlled to be the first required opening, and the opening of the second liquid outlet is controlled to be the second required opening.

[0034] Optionally, the controller is further configured to:

[0035] If the current temperature signal is greater than the second temperature setting value, the required opening state is determined to be the second opening state, and the electric-controlled valve is controlled to operate in the required opening state; when the electric-controlled valve is in the second opening state, the opening of the second liquid outlet of the electric-controlled valve is 0%, and the opening of the first liquid outlet is 100%.

[0036] Optionally, the lubrication system further comprises: an electrically controlled valve, a cooler, a first pressure sensor located at the inlet of the cooler, and a second pressure sensor located at the outlet of the cooler;

[0037] The electronically controlled valve comprises a liquid inlet, a first liquid outlet, and a second liquid outlet; the liquid inlet is communicated with the high voltage driven electronic pump, the first liquid outlet is communicated with the inlet of the cooler, and the second liquid outlet is communicated with the main oil gallery; the electronically controlled valve is used to control the flow of lubricating oil entering the cooler and the flow of lubricating oil entering the main oil gallery; the outlet of the cooler is communicated with the main oil gallery;

[0038] The controller is also electrically connected to the first pressure sensor and the second pressure sensor, and is further used to control the opening state of the electronically controlled valve according to a first pressure value obtained by the first pressure sensor and a second pressure value obtained by the second pressure sensor.

[0039] Optionally, the controller is configured as:

[0040] taking the difference between the first pressure value and the second pressure value as a first pressure difference;

[0041] Determining whether the first pressure difference is greater than a first preset value;

[0042] If so, the electrically controlled valve is controlled to be in a first opening state; when the electrically controlled valve is in the first opening state, the opening of the second liquid outlet of the electrically controlled valve is 100%, and the opening of the first liquid outlet is 0%.

[0043] Optionally, the lubrication system further comprises: an alarm module;

[0044] The controller is also connected to the alarm module; the controller is also used to control the alarm module to sound an alarm when the first pressure difference is greater than the first preset value.

[0045] Optionally, the lubrication system further comprises: a power supply;

[0046] The power supply is electrically connected to the high voltage driven electronic pump; the driving voltage provided by the power supply to the high voltage driven electronic pump is U, 400V≤U≤800V.

[0047] In a second aspect, the present invention provides a vehicle, comprising the lubrication system described in the first aspect.

[0048] The technical solution provided by the present invention is to set a high-voltage driven electronic pump in the lubrication system so that during the normal operation of the engine, the controller can control the required power of the high-voltage driven electronic pump according to the current speed and current torque of the engine, so that when the high-voltage driven electronic pump operates at the required power, the lubricating oil provided by the high-voltage driven electronic pump to the main oil channel can meet the current lubrication needs of the lubricated parts, improve the lubrication effect, and thereby improve the working reliability of the lubricated parts, as well as the operating reliability and stability of the engine. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] Figure 1 A structural schematic diagram of a lubrication system provided by an embodiment of the present invention;

[0050] Figure 2 A schematic diagram of the structure of another lubrication system provided by an embodiment of the present invention;

[0051] Figure 3 A structural schematic diagram of another lubrication system provided by an embodiment of the present invention;

[0052] Figure 4 A structural schematic diagram of another lubrication system provided by an embodiment of the present invention;

[0053] Figure 5 A structural schematic diagram of a lubrication system provided by an embodiment of the present invention;

[0054] Figure 6 A schematic diagram of the structure of another lubrication system provided by an embodiment of the present invention;

[0055] The reference numerals are described as follows:

[0056] 10. Oil pan; 11. High voltage driven electronic pump; 12. Power supply; 20. Main oil channel; 21. Piston cooling nozzle oil channel; 31. Electric control valve; 32. Solenoid valve; 40. Cooler; 51. First pressure sensor; 52. First pressure sensor; 53. Third pressure sensor; 54. Fourth pressure sensor; 60. Controller; A1. Liquid inlet; B1. First liquid outlet; B2. Second liquid outlet; 70. Alarm module; 80. Lubrication component; 81. Piston cooling nozzle; 82. Piston; 90. Temperature sensor. DETAILED DESCRIPTION

[0057] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0058] Figure 1 A structural diagram of a lubrication system provided by an embodiment of the present invention is shown in FIG. Figure 1 As shown, the lubrication system includes an oil pan 10, a main oil gallery 20, a high voltage driven electronic pump 11, a third pressure sensor 53 and a controller 60. The high voltage driven electronic pump 11 is connected to the oil pan 10 and the main oil gallery 20 respectively. The high voltage driven electronic pump 11 is used to provide the lubricating oil in the oil pan 10 to the main oil gallery 20; the third pressure sensor 53 is located in the main oil gallery; the main oil gallery 20 is used to transmit the lubricating oil to each lubricating component 80; the controller 60 is electrically connected to the high voltage driven electronic pump 11 and the third pressure sensor 53; the controller 60 is used to determine the current set pressure value of the main oil gallery 20 according to the current speed and current torque of the engine; according to the third pressure value and the current set pressure value obtained by the third pressure sensor 53, determine the required power of the high voltage driven electronic pump 11, and control the high voltage driven electronic pump 11 to operate at the required power.

[0059] Among them, the oil pan 10 is used to store lubricating oil such as engine oil, and the electronically controlled valve 31 includes a universal ball valve, etc. The current speed of the engine can be obtained through a speed sensor, and the current torque of the engine can be obtained through a crankshaft sensor, etc. The current speed of the engine indicates the number of rotations per minute of the crankshaft in the engine, reflecting the operating speed of components such as the piston or crankshaft in the engine. The current torque of the engine indicates the torque provided by the engine during operation, reflecting the load capacity of the engine within a certain range. The lubricating component 80 includes components that need to be lubricated, such as the main journal, main bearing, rocker shaft, and middle shaft.

[0060] Specifically, the lubricating component 80 is located in the engine (not shown in the figure). When the engine is in different speeds and different torque states, the working state of each lubricating component 80 is also different, and the pressure demand for the lubricating oil is also different. For example, when the engine speed and torque are large, the required lubricating oil pressure value is large. Therefore, according to the current speed and current torque of the engine, the current set pressure value corresponding to the current speed and current torque can be determined, and the degree of difference between the third pressure value and the current set pressure value can be compared to determine the required power of the high-voltage driven electronic pump 11, and when the high-voltage driven electronic pump 11 is controlled to operate at the required power, the lubricating oil pressure provided to the main oil channel 20 can meet the current lubricating oil pressure demand, improve the lubricating effect of the lubricating oil on the lubricated components, and thus improve the operating reliability and stability of the engine.

[0061] The technical solution of the present invention is to set a high-voltage driven electronic pump in the lubrication system so that during the normal operation of the engine, the controller can control the required power of the high-voltage driven electronic pump according to the current speed and current torque of the engine, so that when the high-voltage driven electronic pump operates at the required power, the lubricating oil provided by the high-voltage driven electronic pump to the main oil channel can meet the current lubrication needs of the lubricated parts, improve the lubrication effect, and thereby improve the operating reliability and stability of the engine.

[0062] Optional, reference Figure 1 The controller 60 is configured to: based on the second mapping relationship between the speed, torque and the set pressure value of each lubricating component, determine the current sub-set pressure value of each lubricating component 80 according to the current speed and the current torque, and use the maximum value of each current sub-set pressure value as the current set pressure value.

[0063] The second mapping relationship may be a correspondence table of rotational speed, torque and set pressure value, etc., which may be obtained through experiments or experience.

[0064] Specifically, when the second mapping relationship is a corresponding table of speed, torque and set pressure value, after obtaining the current speed and current torque, the set pressure value corresponding to the current speed and current torque can be directly looked up in the table, and the set pressure value can be determined as the current sub-set pressure value of the lubricating component. The second mapping relationship of each lubricating component may be the same or different, and the current sub-set pressure value of each lubricating component can be determined according to the second mapping relationship of each lubricating component. In order to ensure that the lubrication pressure of the lubricating oil in the main oil channel can meet the lubrication requirements of each lubricating component, the maximum value of each current sub-set pressure value can be used as the current set pressure value, so that after the controller 60 adjusts the opening of the electric control valve 31 according to the current set pressure value, the lubricating oil pressure in the main oil channel 20 can be close to the current set pressure value, thereby meeting the pressure requirements of each lubricating component for the lubricating oil, improving the lubrication effect of the lubrication system on each lubricating component under different working conditions, thereby improving the working safety of the lubricating component and extending the service life of the lubricating component.

[0065] Optional, continue to refer to Figure 1 The controller 60 is configured to determine whether the absolute value of the difference between the third pressure value and the current set pressure value is greater than the second preset value; if so, the operating power corresponding to the current set pressure value is determined as the current required power according to the third mapping relationship between the set pressure value and the operating power.

[0066] Among them, the second preset value can be a fixed value or a non-fixed value, and can be determined according to the actual lubrication demand. In an exemplary embodiment, the second set value can be 5KPa, or other values, which are not specifically limited here.

[0067] Specifically, if the absolute value of the difference between the third pressure value and the current set pressure value is less than or equal to the second preset value, it means that the difference between the third pressure value and the current set pressure value is small, and at this time, there is no need to adjust the operating power of the high-voltage driven electronic pump 11 to meet the lubrication demand of the lubricating component 80. If the absolute value of the difference between the third pressure value and the current set pressure value is greater than the second preset value, it means that the difference between the third pressure value and the current set pressure value is large, and it is necessary to adjust the operating power of the high-voltage driven electronic pump 11 so that the lubricating oil pressure transmitted to the main oil channel 20 by the high-voltage driven electronic pump 11 meets the lubricating oil pressure requirements of each lubricating component 80, thereby improving the lubrication effect of the lubrication system on the lubricating component 80.

[0068] Optional, Figure 2 A structural schematic diagram of another lubrication system provided by an embodiment of the present invention is shown in FIG. Figure 2 As shown, the lubrication system also includes a solenoid valve 32, a fourth pressure sensor 54, a piston cooling nozzle oil passage 21, and at least one piston cooling nozzle 81; the solenoid valve 32 is connected to the main oil passage 20 and the piston cooling nozzle oil passage 21 respectively; the piston cooling nozzle oil passage 21 is used to transmit the lubricating oil to the piston cooling nozzle 81; the piston cooling nozzle 81 is used to spray the lubricating oil to the piston 82. The lubricating component includes a piston 82. The fourth pressure sensor 54 is located in the piston cooling nozzle oil passage 21. The controller 60 is also electrically connected to the solenoid valve 32 and the fourth pressure sensor 54, and the controller 60 is also used to determine the current required pressure value of the piston cooling nozzle oil passage 21 according to the current speed and the current torque; according to the fourth pressure value obtained by the fourth pressure sensor 54 and the current required pressure value, the opening degree of the solenoid valve 32 is adjusted based on the PID algorithm.

[0069] Specifically, when the engine is in different speeds and different torque states, the working state of the piston 82 is also different, and the pressure requirements for the lubricating oil are also different. For example, when the engine speed and torque are relatively large, the temperature generated by the piston 82 when it is working is relatively high, and the required lubricating oil pressure value is relatively large. Therefore, according to the current speed and current torque of the engine, the current required pressure value corresponding to the current speed and current torque in the piston cooling nozzle oil channel 21 can be determined, and the difference between the fourth pressure value and the current required pressure value can be compared. Based on the PID algorithm, the opening degree of the solenoid valve 32 is adjusted, so that after the opening degree of the solenoid valve 32 is adjusted, the fourth pressure value in the piston cooling nozzle oil channel 21 is close to the current required pressure value, or equal to the current required pressure value, so as to meet the lubrication effect of the piston cooling nozzle 81 on the piston 82 and improve the working stability of the piston 82.

[0070] Optionally, the controller 60 is further configured to control the high voltage to drive the electronic pump 11 to operate when a pre-start signal of the engine is obtained.

[0071] The controller 60 may obtain a pre-start signal through a pre-start sensor, the pre-start sensor includes a start button, etc. The pre-start signal indicates that the engine is about to run, but the current speed is zero.

[0072] Specifically, when the controller 60 receives the pre-start signal of the engine, it can control the high-voltage driven electronic pump 11 to run at a preset power within a preset time, so as to provide lubricating oil to the main oil channel 20 in advance, and then lubricate the lubricating components in advance. When the engine is running subsequently, it can prevent the lubricating components from being unlubricated in time, causing problems such as abnormal engine operation, thereby improving the operating reliability of the engine.

[0073] It is understandable that the preset time and the preset power can be set according to actual needs. For example, the preset time is 1s, the preset power is 1KW, and the preset power corresponds to the operating power of the high-voltage driven electronic pump 11 corresponding to the engine under idle conditions. Alternatively, the preset time can be determined according to the third pressure value in the main oil channel 20. In an optional embodiment, the controller 60 is also electrically connected to the engine (not shown in the figure), and the controller is also used to obtain the third pressure value obtained by the third pressure sensor 53 in real time after controlling the high-voltage driven electronic pump 11 to run when the pre-start signal of the engine is obtained; if the absolute value of the difference between the third pressure value and the preset pressure value is less than the preset difference, the engine is controlled to start running.

[0074] The preset pressure may be in the range of 100 KPa to 150 KPa, and the preset difference may be in the range of 0 KPa to 30 KPa. In an exemplary embodiment, the preset pressure may be 100 KPa, and the preset difference may be 10 KPa.

[0075] Specifically, the controller 60 can obtain the third pressure value in the main oil channel 20 through the third pressure sensor 53. The controller 60 stores a preset pressure (which can correspond to the current set pressure value corresponding to the engine under the idle condition). When the difference between the third pressure value and the preset pressure value is less than the preset difference, it means that the third pressure value is close to or equal to the preset pressure. At this time, the lubricating oil in the main oil channel 20 can lubricate the lubricating parts well. After the controller 60 controls the engine to start running, it can ensure the lubrication effect of the engine and avoid abnormal operation of the engine due to untimely lubrication. When the engine is running normally, the operating power of the high-voltage drive electronic pump 11 is adjusted according to the current speed and current torque of the engine to ensure the lubrication reliability of the engine during the entire operation process.

[0076] Optional, continue to refer to Figure 1The controller 60 is also used to control the high voltage driven electronic pump 11 to continue running when a brake signal or a shutdown signal of the engine is obtained, until the engine stops running.

[0077] The controller 60 can obtain a brake signal through a brake sensor and obtain a stop signal through the triggering state of the stop button. Both the brake signal and the stop signal indicate that the engine is about to stop running.

[0078] Specifically, when the controller 60 receives a brake signal or a shutdown signal from the engine, the high-voltage driven electronic pump 11 can be controlled to continue running according to the current speed and current torque of the engine, so as to continue to supply lubricating oil to the main oil channel 20, thereby lubricating the lubricated parts, ensuring that the lubricated parts can still be lubricated before the engine stops running, avoiding the situation where the lubrication system can no longer continue to supply lubricating oil to the lubricated parts before the engine speed reaches zero, thereby causing dry grinding of the lubricated parts, etc., thereby improving the working reliability of the lubricated parts.

[0079] Optional, Figure 3 A structural diagram of another lubrication system provided by an embodiment of the present invention is shown in FIG. Figure 3 As shown, the lubrication system also includes an electric control valve 31, a cooler 40, and a temperature sensor 90. The electric control valve 31 includes a liquid inlet A1, a first liquid outlet B1, and a second liquid outlet B2; the liquid inlet A1 is connected to the high voltage driven electronic pump 11, the first liquid outlet B1 is connected to the inlet of the cooler 40, and the second liquid outlet B2 is connected to the main oil gallery 20; the electric control valve 31 is used to control the flow of lubricating oil entering the cooler 40, and the flow of lubricating oil entering the main oil gallery 20. The outlet of the cooler 40 is connected to the main oil gallery 20. The controller 60 is also electrically connected to the temperature sensor 90 and the electric control valve 31. The controller is also used to determine the required opening state of the electric control valve 31 according to the current temperature signal obtained by the temperature sensor 90, and control the electric control valve 31 to work in the required opening state.

[0080] The temperature sensor 90 includes a thermistor or a thermocouple, etc., and can be configured according to actual needs, which is not specifically limited here.

[0081] Specifically, the temperature sensor 90 is used to detect the current temperature signal of the lubricating oil in the main oil gallery 20. The controller 60 determines the required opening state of the electric control valve 31 based on the internal processing logic and the current temperature signal, so that when the electric control valve 31 is controlled to work at the required opening state, the temperature of the lubricating oil in the main oil gallery 20 can meet the lubrication requirements of various lubricating components, thereby improving the lubrication effect of the lubrication system on the lubricating components.

[0082] It is understandable that the control logic of the controller 60 for determining the required opening state of the electric control valve 31 according to the current temperature signal can be set according to actual needs. Figure 3 The controller 60 is configured to: determine whether the current temperature signal is less than the first temperature setting value; if so, determine that the required opening state is the first opening state, and control the electronically controlled valve 31 to work in the required opening state.

[0083] When the electric control valve 31 is in the first opening state, the opening of the second liquid outlet B2 of the electric control valve 31 is 100%, and the opening of the first liquid outlet B1 is 0%. The first temperature setting value may be a fixed value or a non-fixed value, and may be determined according to actual lubrication requirements. In an exemplary embodiment, the first temperature setting value may be 100°C.

[0084] Specifically, if the controller 60 compares the current temperature signal with the first temperature setting value and determines that the current temperature signal is less than the first temperature setting value, it means that the current temperature signal is low. At this time, there is no need to cool the lubricating fluid to prevent the lubricating oil temperature from being too low, which will cause the lubricating oil viscosity to increase, making the oil film formed by the lubricating oil on the lubricating component uneven, causing the lubricating component to vibrate, and increasing the friction and wear of the lubricating component. The lubricating component 80 will generate heat during operation. When the lubricating oil passes through the lubricating component 80, it will take away some of the heat. Therefore, the temperature of the lubricating oil after passing through the lubricating component 80 will increase to a certain extent, and the temperature of the lubricating oil in the oil pan 10 is relatively high. Therefore, when the current temperature signal is less than the first temperature setting value, the electronically controlled valve 31 is controlled to be in the first opening state, so that the lubricating oil provided to the electronically controlled valve 31 by the high-voltage driven electronic pump 11 is all transmitted to the main oil channel 20 through the second liquid outlet B2. The temperature of the lubricating oil in the oil pan 10 is relatively high, so that after the lubricating oil in the oil pan 10 is transmitted to the main oil channel 20 through the electronically controlled valve 31, the temperature of the lubricating oil in the main oil channel 20 can rise rapidly, thereby reducing the friction work generated by the lubricating components due to the low temperature of the lubricating oil, improving the lubrication effect, and reducing the power consumption of the cooler 40.

[0085] Optional, continue to refer to Figure 3 , the controller 60 is configured as follows: if the current temperature signal is greater than or equal to the first temperature setting value, then determine whether the current temperature signal is less than or equal to the second temperature setting value; if so, then according to a first mapping relationship between the temperature signal and the set opening, use the set opening corresponding to the current temperature signal as the first required opening of the first liquid outlet B1 of the electric control valve 31; according to the first required opening of the first liquid outlet B1, determine the second required opening of the second liquid outlet B2, and control the opening of the first liquid outlet B1 of the electric control valve 31 to be the first required opening, and the opening of the second liquid outlet B2 to be the second required opening.

[0086] The first temperature setting value is less than the second temperature setting value. The second temperature setting value may be a fixed value or a non-fixed value, and may be determined according to actual lubrication requirements. In an exemplary embodiment, the second temperature setting value may be 105°C, or other values, which are not specifically limited here. The first mapping relationship may be a graph of the temperature signal and the set opening or a corresponding table of the temperature signal and the set opening, which may be obtained through experiments or experience.

[0087] Specifically, if the controller 60 compares the current temperature signal with the first temperature setting value and the second temperature setting value, and determines that the current temperature signal is greater than or equal to the first temperature setting value, and less than or equal to the second temperature setting value, it means that the temperature of the lubricating oil is in a moderate state, that is, the temperature of the lubricating oil is not too high or too low. At this time, the opening of the first liquid outlet B1 and the second liquid outlet B2 can be adjusted according to the current temperature signal to keep the temperature of the lubricating oil in the main oil channel 20 at the current state to prevent the lubricating oil temperature from being too high or too low and affecting the lubrication effect.

[0088] Among them, according to the current temperature signal, the control logic for adjusting the opening of the first liquid outlet B1 and the second liquid outlet B2 is as follows: when the first mapping relationship is a curve chart of the temperature signal and the set opening, after obtaining the current temperature signal, the curve chart of the temperature signal and the set opening can be directly compared to determine the set opening on the curve chart corresponding to the current temperature signal as the first required opening. Alternatively, when the first mapping relationship is a corresponding table of the temperature signal and the set opening, after obtaining the current temperature signal, the table can be directly looked up to obtain the set opening corresponding to the current temperature signal, and the set opening is determined as the first required opening. The first required opening is determined as the opening of the first liquid outlet B1, and then the second required opening of the second liquid outlet B2 is determined based on the first required opening of the first liquid outlet B1.

[0089] It should be noted that the sum of the opening of the second liquid outlet B2 and the opening of the first liquid outlet B1 is 100%, or the sum of the opening of the first liquid outlet B2 and the opening of the first liquid outlet B1 is 0%. When the lubrication system supplies lubricating oil to the lubricating component, the sum of the opening of the second liquid outlet B2 and the opening of the first liquid outlet B1 in the electric control valve 31 is 100%; when the lubrication system stops supplying lubricating oil to the lubricating component, the sum of the opening of the first liquid outlet B2 and the opening of the first liquid outlet B1 in the electric control valve 31 is 0%.

[0090] For example, the first temperature setting value is 100°C, the second temperature setting value is 105°C, and the current temperature signal is 101°C. At this time, the first required opening determined according to the first mapping relationship is 10%, that is, the opening of the first liquid outlet B1 is 10%. Then, according to the opening of the first liquid outlet B1 of 10%, the opening of the second liquid outlet B2 is determined to be 90%. When the current temperature signal is 101°C, the current temperature signal is close to the first temperature setting value of 100°C. If the electric control valve 31 continues to operate at the current opening, the temperature of the lubricating oil in the main oil channel 20 may be less than 100°C. Therefore, it is necessary to reduce the flow of the lubricating fluid flowing through the cooler 40 to increase the temperature of the lubricating oil in the main oil channel, that is, to control the opening of the first liquid outlet B1 to be smaller and the opening of the second liquid outlet B2 to be larger, so that the temperature of the lubricating oil in the main oil channel 20 is moderately maintained in the required temperature range, thereby improving the lubrication effect on the lubricated parts.

[0091] Optional, continue to refer to Figure 3 The controller 60 is further configured to: if the current temperature signal is greater than the second temperature setting value, determine that the required opening state is the second opening state, and control the electronically controlled valve 31 to operate in the required opening state.

[0092] When the electric control valve 31 is in the second opening state, the opening degree of the second liquid outlet B2 of the electric control valve 31 is 0%, and the opening degree of the first liquid outlet B1 is 100%.

[0093] Specifically, if the controller 60 compares the current temperature signal with the first temperature setting value and the second temperature setting value, and determines that the current temperature signal is greater than the second temperature setting value, it means that the current temperature signal is relatively high. If the temperature of the lubricating oil is too high, the viscosity of the lubricating oil will be reduced, and the aging rate of the lubricating oil will be accelerated. When lubricating the lubricating parts, the oil film formed on the lubricating parts will be unstable, which will increase the running resistance of the lubricating parts and cause problems such as vibration or dry film of the lubricating parts. Therefore, in order to avoid problems such as abnormal operation of the lubricating parts caused by the excessive temperature of the lubricating oil in the main oil channel 20, the electric control valve 31 can be controlled to operate in the second opening state, so that the lubricating oil provided to the electric control valve 31 by the oil pan 10 is all transmitted to the cooler 40 through the first liquid outlet B2. The cooler 40 cools the lubricating oil and then transmits it to the main oil channel 20 to increase the temperature drop rate of the lubricating oil and improve the operating safety of the lubricating parts.

[0094] Optional, Figure 4 A structural diagram of another lubrication system provided by an embodiment of the present invention is shown in FIG. Figure 4As shown, the lubrication system further includes an electric control valve 31, a cooler 40, a first pressure sensor 51 located at the inlet of the cooler 40, and a second pressure sensor 52 located at the outlet of the cooler 40. The electric control valve 31 includes a liquid inlet A1, a first liquid outlet B1, and a second liquid outlet B2; the liquid inlet A1 is connected to the high voltage driven electronic pump 11, the first liquid outlet B1 is connected to the inlet of the cooler 40, and the second liquid outlet B2 is connected to the main oil gallery 20; the electric control valve 31 is used to control the flow of lubricating oil entering the cooler 40, and the flow of lubricating oil entering the main oil gallery 20. The outlet of the cooler 40 is connected to the main oil gallery 20. The controller 60 is also electrically connected to the first pressure sensor 51, the second pressure sensor 52, and the electric control valve 31. The controller 60 is also used to control the opening state of the electric control valve 31 according to the first pressure value obtained by the first pressure sensor 51 and the second pressure value obtained by the second pressure sensor 52.

[0095] The first pressure sensor 51 and the second pressure sensor 52 are devices or apparatuses that can sense pressure signals and convert pressure signals into electrical signals according to certain rules. The first pressure sensor 51 and the second pressure sensor 52 include piezoelectric pressure sensors, ceramic pressure sensors, capacitive pressure sensors, inductive pressure sensors, etc., and can be set according to actual needs. The cooler 40 is a device that accelerates the heat dissipation of the lubricating oil and keeps the lubricating oil at a lower temperature.

[0096] Specifically, the opening of the first liquid outlet B1 in the electric control valve 31 determines the flow rate of the lubricating oil through the first liquid outlet B1, and the opening of the second liquid outlet B2 determines the flow rate of the lubricating oil through the second liquid outlet B2. The lubricating oil flowing out of the first liquid outlet B1 enters the cooler 40, and is output to the main oil channel 20 after being cooled by the cooler 40. A first pressure sensor 51 is set at the inlet of the cooler 40, and a second pressure sensor 52 is set at the outlet of the cooler 40, so as to obtain a first pressure value before the lubricating oil enters the cooler 40 through the first pressure sensor 51, and obtain a second pressure value of the lubricating oil output by the cooler 40 through the second pressure sensor 52. The controller 60 compares the first pressure value and the second pressure value to determine the current working state of the cooler 40, and then controls the opening of the electric control valve 31 according to the current working state of the cooler 40. For example, the first pressure value is much greater than the second pressure value, indicating that most of the lubricating oil at the inlet of the cooler 40 does not pass through the cooler 40 to reach the outlet of the cooler 40, indicating that the cooler 40 is blocked or has other problems. At this time, the controller 60 can control the opening state of the electric control valve 31 so that the lubricating oil flowing through the electric control valve 31 only flows out from the second liquid outlet B2 and cannot be transmitted to the cooler 40 through the first liquid outlet B1. In this way, when the controller 60 determines that the cooler 40 is abnormal based on the first pressure value and the second pressure value, the opening of the electric control valve 31 can be adjusted to ensure the pressure stability of the lubricating oil in the main oil channel 20 and improve the lubrication reliability and stability of the lubrication system.

[0097] It should be noted that the reference Figure 4 One end of each lubricating component 80 is connected to the main oil channel 20, and the other end of each lubricating component 80 is connected to the oil pan 10. After the lubricating oil provided by the main oil channel 20 lubricates the lubricating component 80, it can flow into the oil pan 10 for recycling, thereby improving energy utilization.

[0098] In an alternative embodiment, reference Figure 4 The controller 60 is configured to: take the difference between the first pressure value and the second pressure value as the first pressure difference; determine whether the first pressure difference is greater than a first preset value; if so, control the electronically controlled valve 31 to be in a first opening state.

[0099] Among them, when the electric control valve 31 is in the first opening state, the opening of the second liquid outlet B2 of the electric control valve 31 is 100%, and the opening of the first liquid outlet B1 is 0%. The first preset value can be set according to the type of lubricating oil and the first pressure value. Exemplarily, the lubricating oil is engine oil, the first pressure value is 200KPa, and the first preset value is 50KPa. In an optional embodiment, the first preset value is proportional to the first pressure value, that is, the larger the first pressure value, the larger the first preset value, and it can also be other, which is not specifically limited here.

[0100] Specifically, the first pressure difference indicates the degree of difference between the first pressure value and the second pressure value. The larger the first pressure difference, the larger the degree of difference between the first pressure value and the second pressure value. In the process of cooling the lubricating oil by the cooler 40, the lubricating oil pressure may fluctuate due to the change of the lubricating oil temperature. However, if the first pressure difference is greater than the first preset value, it indicates that the cooler 40 is blocked or other abnormal conditions occur. The lubricating oil pressure entering the main oil channel 20 through the cooler 40 is low, resulting in the lubricating oil pressure in the main oil channel 20 not meeting the actual lubrication demand. At this time, the electric control valve 31 can be controlled to be in the first opening state, so that the lubricating oil transmitted from the oil pan 20 to the electric control valve 31 can enter the main oil channel 20 through the second liquid outlet B2, ensuring that the lubricating oil pressure in the main oil channel 20 can meet the actual lubrication demand and improve the lubrication reliability of the lubrication system.

[0101] It should be noted that when the first pressure difference is less than or equal to the first preset value, it means that the pressure difference between the lubricating oil before and after being cooled by the cooler 40 is small, and the first pressure difference satisfies the slight pressure fluctuation generated when the cooler 40 cools the lubricating oil. At this time, the electric control valve 31 can be controlled to maintain the current opening for operation.

[0102] Optional, Figure 5 A structural diagram of a lubrication system provided by an embodiment of the present invention is shown in FIG. Figure 5 As shown, the lubrication system further includes an alarm module 70; the controller 60 is also connected to the alarm module 70; the controller 60 is also used to control the alarm module 70 to alarm when the first pressure difference is greater than a first preset value.

[0103] The alarm module 70 includes a buzzer and the like, and can be configured according to actual needs.

[0104] Specifically, when the controller 60 calculates the difference between the first pressure value and the second pressure value and determines that the first pressure difference is greater than the first preset value, it indicates that the cooler 40 has an abnormal condition such as blockage. At this time, the alarm module 70 can be controlled to sound an alarm, thereby reminding the staff to repair or replace the cooler 40, so that the lubricating oil in the lubrication system can be cooled in time, thereby improving the lubricating effect of the lubricating oil in the lubrication system.

[0105] Optional, Figure 6 A structural diagram of a lubrication system provided by an embodiment of the present invention is shown in FIG. Figure 6 As shown, the lubrication system also includes a power supply 12; the power supply 12 is electrically connected to the high-voltage driven electronic pump 11; the driving voltage provided by the power supply 12 to the high-voltage driven electronic pump 11 is U, 400V≤U≤800V.

[0106] The power supply 12 includes power supply equipment such as a power distributor.

[0107] Specifically, by providing the power supply 12 with a driving voltage of 400V to 800V to the high voltage driven electronic pump 11, the output power of the high voltage driven electronic pump 11 can be increased, and the high voltage driven electronic pump 11 has a stronger ability to deliver lubricating oil.

[0108] In another optional embodiment, the controller 60 may also be electrically connected to the power supply 12 to regulate the driving voltage provided by the power supply 12 to the high-voltage driven electronic pump 11. The higher the driving voltage of the high-voltage driven electronic pump 11, the greater the working power of the high-voltage driven electronic pump, and the stronger the transmission capacity of the high-voltage driven electronic pump 11 for liquid. The controller 60 may adjust the driving voltage provided by the power supply 12 to the high-voltage driven electronic pump 11 according to the difference between the third pressure value and the current set pressure value, and then adjust the operating power of the high-voltage driven electronic pump 11, thereby improving the power adjustment accuracy of the high-voltage driven electronic pump 11, and then improving the reliability of the pressure adjustment of the lubricating oil.

[0109] Based on the same inventive concept, an embodiment of the present invention provides a vehicle, including a lubrication system provided by any embodiment of the present invention. Therefore, the vehicle has the technical features of the lubrication system provided by the embodiment of the present invention and can achieve the beneficial effects of the lubrication system provided by the embodiment of the present invention. The similarities can be referred to the above description of the lubrication system provided by the embodiment of the present invention, which will not be repeated here.

[0110] Note that the above are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments, combinations and substitutions can be made by those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in more detail through the above embodiments, the present invention is not limited to the above embodiments, and may include more other equivalent embodiments without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A lubrication system, characterized in that: include: Oil pan, main oil gallery, high voltage driven electronic pump, third pressure sensor and controller; The high-voltage driven electronic pump is communicated with the oil pan and the main oil gallery respectively; the high-voltage driven electronic pump is used to supply the lubricating oil in the oil pan to the main oil gallery; The third pressure sensor is located in the main oil passage; the main oil passage is used to transmit the lubricating oil to each lubricating component; The controller is electrically connected to the high voltage driven electronic pump and the third pressure sensor; The controller is used to determine the current set pressure value of the main oil channel according to the current speed and current torque of the engine; determine the required power of the high-voltage driven electronic pump according to the third pressure value obtained by the third pressure sensor and the current set pressure value, and control the high-voltage driven electronic pump to operate at the required power.

2. The lubrication system according to claim 1, characterized in that: The controller is specifically configured as follows: Based on a second mapping relationship between the rotational speed, the torque and the set pressure value of each lubricating component, according to the current rotational speed and the current torque, determine the current sub-set pressure value of each lubricating component; The maximum value among the current sub-set pressure values ​​is used as the current set pressure value.

3. The lubrication system according to claim 1, characterized in that: The controller is specifically configured as follows: Determining whether the absolute value of the difference between the third pressure value and the current set pressure value is greater than a second preset value; If so, the operating power corresponding to the current set pressure value is determined as the current required power according to the third mapping relationship between the set pressure value and the operating power.

4. The lubrication system according to claim 1, characterized in that: Also includes: a solenoid valve, a fourth pressure sensor, a piston cooling nozzle oil passage, and at least one piston cooling nozzle; The solenoid valve is communicated with the main oil passage and the piston cooling nozzle oil passage respectively; The piston cooling nozzle oil passage is used to transmit the lubricating oil to the piston cooling nozzle; The piston cooling nozzle is used to spray the lubricating oil onto the piston; the lubricating component includes the piston; The fourth pressure sensor is located in the piston cooling nozzle oil passage; The controller is also electrically connected to the solenoid valve and the fourth pressure sensor, and is also used to determine the current required pressure value of the piston cooling nozzle oil channel according to the current speed and the current torque; and adjust the opening degree of the solenoid valve based on the PID algorithm according to the fourth pressure value obtained by the fourth pressure sensor and the current required pressure value.

5. The lubrication system according to claim 1, characterized in that: The controller is also used to control the high voltage driven electronic pump to operate when a pre-start signal of the engine is obtained.

6. The lubrication system according to claim 5, characterized in that: The controller is also electrically connected to the engine. The controller is also used to control the high voltage driven electronic pump to run when a pre-start signal of the engine is obtained, and to obtain the third pressure value obtained by the third pressure sensor in real time; if the absolute value of the difference between the third pressure value and the preset pressure value is less than the preset difference, the engine is controlled to start running.

7. The lubrication system according to claim 1, characterized in that: The controller is also used to control the high voltage driven electronic pump to continue running when a brake signal or a stop signal of the engine is obtained, until the engine stops running.

8. The lubrication system according to claim 1, characterized in that: Also includes: Electronically controlled valves, coolers and temperature sensors; The electronically controlled valve comprises a liquid inlet, a first liquid outlet and a second liquid outlet; the liquid inlet is communicated with the high voltage driven electronic pump, the first liquid outlet is communicated with the inlet of the cooler, and the second liquid outlet is communicated with the main oil gallery; the electronically controlled valve is used to control the flow of lubricating oil entering the cooler and the flow of lubricating oil entering the main oil gallery; The outlet of the cooler is in communication with the main oil channel; The controller is also electrically connected to the temperature sensor and the electric control valve. The controller is also used to determine the required opening state of the electric control valve according to the current temperature signal obtained by the temperature sensor, and control the electric control valve to operate in the required opening state.

9. The lubrication system according to claim 8, characterized in that: The controller is configured to: Determining whether the current temperature signal is less than a first temperature setting value; If so, it is determined that the required opening state is the first opening state, and the electrically controlled valve is controlled to operate in the required opening state; when the electrically controlled valve is in the first opening state, the opening of the second liquid outlet of the electrically controlled valve is 100%, and the opening of the first liquid outlet is 0%.

10. The lubrication system according to claim 9, characterized in that: The controller is configured to: If the current temperature signal is greater than or equal to the first temperature setting value, determining whether the current temperature signal is less than or equal to a second temperature setting value; the first temperature setting value is less than the second temperature setting value; If so, according to a first mapping relationship between the temperature signal and the set opening, the set opening corresponding to the current temperature signal is used as a first required opening of the first liquid outlet of the electric control valve; According to the first required opening of the first liquid outlet, the second required opening of the second liquid outlet is determined, and the opening of the first liquid outlet of the electric control valve is controlled to be the first required opening, and the opening of the second liquid outlet is controlled to be the second required opening.

11. The lubrication system according to claim 10, characterized in that: The controller is also configured to: If the current temperature signal is greater than the second temperature setting value, the required opening state is determined to be the second opening state, and the electric-controlled valve is controlled to operate in the required opening state; when the electric-controlled valve is in the second opening state, the opening of the second liquid outlet of the electric-controlled valve is 0%, and the opening of the first liquid outlet is 100%.

12. The lubrication system according to claim 1, characterized in that: Also includes: An electrically controlled valve, a cooler, a first pressure sensor located at the inlet of the cooler, and a second pressure sensor located at the outlet of the cooler; The electronically controlled valve comprises a liquid inlet, a first liquid outlet, and a second liquid outlet; the liquid inlet is communicated with the high voltage driven electronic pump, the first liquid outlet is communicated with the inlet of the cooler, and the second liquid outlet is communicated with the main oil gallery; the electronically controlled valve is used to control the flow of lubricating oil entering the cooler and the flow of lubricating oil entering the main oil gallery; the outlet of the cooler is communicated with the main oil gallery; The controller is also electrically connected to the first pressure sensor and the second pressure sensor, and is further used to control the opening state of the electronically controlled valve according to a first pressure value obtained by the first pressure sensor and a second pressure value obtained by the second pressure sensor.

13. The lubrication system according to claim 12, characterized in that: The controller is configured to: taking the difference between the first pressure value and the second pressure value as a first pressure difference; Determining whether the first pressure difference is greater than a first preset value; If so, the electrically controlled valve is controlled to be in a first opening state; when the electrically controlled valve is in the first opening state, the opening of the second liquid outlet of the electrically controlled valve is 100%, and the opening of the first liquid outlet is 0%.

14. The lubrication system according to claim 13, characterized in that Also includes: Alarm module; The controller is also connected to the alarm module; the controller is also used to control the alarm module to sound an alarm when the first pressure difference is greater than the first preset value.

15. The lubrication system according to claim 1, characterized in that Also includes: Power supply; The power supply is electrically connected to the high voltage driven electronic pump; The power supply provides a driving voltage U to the high voltage driven electronic pump, 400V≤U≤800V.

16. A vehicle, characterized in that: A lubrication system comprising any one of claims 1-15.

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