Supercharger high-temperature early warning method, device and equipment and storage medium

Abstract

The invention discloses a supercharger high-temperature early warning method, device and equipment and a storage medium, relates to the technical field of vehicle control, and discloses a supercharger high-temperature early warning method which comprises the steps that the engine rotating speed and the supercharger compressor inlet temperature of a vehicle are obtained; the supercharger compressor efficiency is obtained based on the supercharger performance diagram according to the engine rotating speed; according to the supercharger compressor inlet temperature and the supercharger compressor efficiency, the supercharger compressor outlet temperature is obtained; when the outlet temperature of a compressor of the supercharger is higher than the highest temperature resistance of the material, high-temperature early warning of the supercharger is carried out; according to the method, the temperature of the supercharged engine is estimated according to the rotating speed of the engine under different conditions of the vehicle and the temperature at the inlet of the compressor of the supercharger, when the estimated temperature is higher than the highest temperature resistance of the supercharger or opponent material, high-temperature early warning is conducted, the high-temperature overheating risk can be found in time, potential damage or failure of parts is avoided, and the service life of the supercharged engine is prolonged. Abrasion can be reduced, the service life of the supercharger is prolonged, and the maintenance frequency and cost are reduced.

Description

Technical Field

[0001] The present application relates to the field of vehicle control technology, and in particular to a supercharger high temperature warning method, device, equipment and storage medium. Background Art

[0002] A turbocharger is actually an air compressor that uses the exhaust gas burned in the engine cylinder to drive the turbine, which then drives the coaxial impeller to compress the air sent by the air filter, pressurizing it into the cylinder, thereby meeting the engine's power and torque requirements.

[0003] The supercharger can pressurize the air, so the temperature of the supercharged air will be relatively high. During the development process, the high temperature of the supercharged gas caused the intercooler intake pipe (hose) of the counterpart to melt. After investigation, it was found that it was caused by leakage behind the intercooler pipe, but the working parameters of the supercharger were within the set parameter range, and no alarm was issued. In addition, there was no temperature monitoring of the supercharged gas. This also resulted in the inability to know in time if the temperature of the supercharged gas was too high, resulting in damage to the supercharger and / or the counterpart due to abnormal gas over-temperature.

[0004] The above contents are only used to assist in understanding the technical solution of the present application and do not constitute an admission that the above contents are prior art. Summary of the invention

[0005] The main purpose of the present application is to provide a supercharger high temperature warning method, device, equipment and storage medium, aiming to solve the technical problem that the temperature of the gas after boosting is too high, causing the supercharger and / or the opponent to be damaged due to abnormal gas over-temperature.

[0006] To achieve the above objectives, the present application proposes a supercharger high temperature early warning method, the supercharger high temperature early warning method comprising:

[0007] Obtain the vehicle's engine speed and supercharger compressor inlet temperature;

[0008] Obtaining a supercharger compressor efficiency according to the engine speed based on a supercharger performance map;

[0009] Obtaining a supercharger compressor outlet temperature according to the supercharger compressor inlet temperature and the supercharger compressor efficiency;

[0010] When the outlet temperature of the supercharger compressor is higher than the maximum temperature resistance of the material, a supercharger high temperature warning is issued.

[0011] In one embodiment, obtaining the compressor efficiency of the supercharger according to the engine speed based on the supercharger performance map includes:

[0012] Obtaining a current air flow and a boost pressure of the vehicle according to the engine speed;

[0013] Obtaining a current equivalent flow rate according to the current air flow rate, and obtaining a current boost ratio according to the boost pressure and the compressor inlet pressure;

[0014] The supercharger compressor efficiency is obtained based on the supercharger performance map, the current reduced flow rate and the current pressure ratio.

[0015] In one embodiment, obtaining the supercharger compressor outlet temperature according to the supercharger compressor inlet temperature and the supercharger compressor efficiency includes:

[0016] Obtaining a temperature adjustment value according to the supercharger compressor efficiency, the supercharger compressor inlet temperature, the current compression ratio, and the air adiabatic index;

[0017] The supercharger compressor outlet temperature is obtained according to the temperature parameter and the supercharger compressor inlet temperature.

[0018] In one embodiment, obtaining the temperature adjustment value according to the supercharger compressor efficiency, the supercharger compressor inlet temperature, the current compression ratio and the air adiabatic index includes:

[0019] Get the air adiabatic index;

[0020] Obtaining a reference temperature according to the air adiabatic index, the supercharger compressor inlet temperature and the current pressure ratio;

[0021] A temperature adjustment value is obtained according to the reference temperature and the supercharger compressor efficiency.

[0022] In one embodiment, when the outlet temperature of the supercharger compressor is higher than the maximum temperature resistance of the material, a supercharger high temperature warning is performed, including:

[0023] Obtain the highest temperature resistance of the supercharger material and the highest temperature resistance of the opponent material;

[0024] The maximum temperature resistance of the material is obtained according to the maximum temperature resistance of the supercharger material and the maximum temperature resistance of the counterpart material;

[0025] When the outlet temperature of the supercharger compressor is higher than the maximum temperature resistance of the material, a supercharger high temperature warning is issued according to the outlet temperature of the supercharger compressor and the maximum temperature resistance of the material.

[0026] In one embodiment, the supercharger high temperature warning is performed according to the supercharger compressor outlet temperature and the maximum temperature resistance of the material, including:

[0027] Obtaining a warning temperature threshold according to the maximum temperature resistance of the material, wherein the warning temperature threshold includes a first warning temperature threshold and a second warning temperature threshold;

[0028] When the outlet temperature of the supercharger compressor is less than or equal to the first warning temperature threshold, no high temperature warning is issued;

[0029] When the compressor outlet temperature of the supercharger is lower than the second warning temperature threshold and greater than or equal to the first warning temperature threshold, a high temperature fault lamp is turned on to issue a supercharger high temperature warning;

[0030] When the compressor outlet temperature of the supercharger is greater than the second warning temperature threshold, the current boost ratio of the supercharger is adjusted and the high temperature fault lamp is turned on to issue a high temperature warning for the supercharger.

[0031] In one embodiment, when the compressor outlet temperature of the supercharger is greater than the second warning temperature threshold, adjusting the current boost ratio of the supercharger and lighting a high temperature fault lamp to issue a supercharger high temperature warning includes:

[0032] When the compressor outlet temperature of the supercharger is greater than the second warning temperature threshold, obtaining a current boost ratio of the supercharger;

[0033] Obtaining a protection pressure ratio according to the current pressure increase ratio, and obtaining a target pressure increase ratio according to the protection pressure ratio;

[0034] The current boost ratio is adjusted to the target boost ratio and a high temperature fault lamp is turned on to issue a supercharger high temperature warning.

[0035] In addition, to achieve the above-mentioned purpose, the present application also proposes a supercharger high temperature warning device, the supercharger high temperature warning device comprising:

[0036] An acquisition module, used for acquiring an engine speed of a vehicle and a supercharger compressor inlet temperature;

[0037] The acquisition module is further used to obtain the compressor efficiency of the supercharger according to the engine speed based on the supercharger performance map;

[0038] A temperature calculation module, used for obtaining a supercharger compressor outlet temperature according to the supercharger compressor inlet temperature and the supercharger compressor efficiency;

[0039] The high temperature warning module is used to issue a high temperature warning for the supercharger when the outlet temperature of the supercharger compressor is higher than the maximum temperature resistance of the material.

[0040] In addition, to achieve the above-mentioned purpose, the present application also proposes a supercharger high temperature warning device, which includes: a memory, a processor, and a computer program stored in the memory and executable on the processor, and the computer program is configured to implement the steps of the supercharger high temperature warning method as described above.

[0041] In addition, to achieve the above-mentioned purpose, the present application also proposes a storage medium, which is a computer-readable storage medium, and a computer program is stored on the storage medium. When the computer program is executed by a processor, the steps of the supercharger high temperature warning method as described above are implemented.

[0042] In addition, to achieve the above-mentioned purpose, the present application also provides a computer program product, which includes a computer program. When the computer program is executed by a processor, the steps of the supercharger high temperature warning method as described above are implemented.

[0043] One or more technical solutions proposed in this application have at least the following technical effects:

[0044] The temperature of the engine after supercharging is estimated by the engine speed under different vehicle conditions and the temperature at the supercharger inlet. When the estimated temperature is higher than the maximum temperature resistance of the supercharger or the opponent material, a high temperature warning is issued. This can timely detect the risk of high temperature overheating and avoid potential component damage or failure, help reduce wear, extend the service life of the supercharger, and reduce maintenance frequency and costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0046] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0047] Figure 1 A schematic diagram of a process flow provided for the first embodiment of the supercharger high temperature warning method of the present application;

[0048] Figure 2 A supercharger performance diagram provided in Example 1 of the supercharger high temperature warning method of the present application;

[0049] Figure 3 A flow chart of the second embodiment of the supercharger high temperature warning method of the present application;

[0050] Figure 4 This is a schematic diagram of the module structure of the supercharger high temperature warning device according to an embodiment of the present application;

[0051] Figure 5 Schematic diagram of the equipment structure of the hardware operating environment involved in the supercharger high temperature warning method in the embodiment of the present application. DETAILED DESCRIPTION

[0052] It should be understood that the specific embodiments described herein are only used to explain the technical solutions of the present application and are not used to limit the present application.

[0053] In order to better understand the technical solution of the present application, a detailed description will be given below in conjunction with the accompanying drawings and specific implementation methods.

[0054] The main solution of the embodiment of the present application is: obtaining the engine speed and supercharger compressor inlet temperature of the vehicle; obtaining the supercharger compressor efficiency according to the engine speed based on the supercharger performance diagram; obtaining the supercharger compressor outlet temperature according to the supercharger compressor inlet temperature and the supercharger compressor efficiency; when the supercharger compressor outlet temperature is higher than the maximum temperature resistance of the material, a supercharger high temperature warning is issued.

[0055] In this embodiment, for the convenience of description, the following description is made by taking the identification of the supercharger high temperature warning device as the execution subject.

[0056] The prior art turbocharger is actually an air compressor that uses the exhaust gas burned in the engine cylinder to drive the turbine, which then drives the coaxial impeller to compress the air sent by the air filter, pressurizing it into the cylinder to meet the engine power and torque requirements.

[0057] The supercharger can pressurize the air, so the temperature of the supercharged air will be relatively high. During the development process, the high temperature of the supercharged gas caused the intercooler intake pipe (hose) of the counterpart to melt. After investigation, it was found that it was caused by leakage behind the intercooler pipe, but the working parameters of the supercharger were within the set parameter range, and no alarm was issued. In addition, there was no temperature monitoring of the supercharged gas. This also resulted in the inability to know in time if the temperature of the supercharged gas was too high, resulting in damage to the supercharger and / or the counterpart due to abnormal gas over-temperature.

[0058] The present application provides a solution, which estimates the temperature of the engine after supercharging by using the engine speed under different vehicle conditions and the temperature at the supercharger inlet. When the estimated temperature is higher than the maximum temperature resistance of the supercharger or the opponent material, a high temperature warning is issued, which can timely detect the risk of high temperature overheating and avoid potential component damage or failure, help reduce wear, extend the service life of the supercharger, and reduce maintenance frequency and cost.

[0059] It can be seen from the above embodiments that the present application discloses a supercharger high temperature warning method, device, equipment and storage medium, which relates to the field of vehicle control technology, and discloses a supercharger high temperature warning method, including: obtaining the engine speed and supercharger compressor inlet temperature of the vehicle; obtaining the supercharger compressor efficiency according to the engine speed based on the supercharger performance diagram; obtaining the supercharger compressor outlet temperature according to the supercharger compressor inlet temperature and the supercharger compressor efficiency; when the supercharger compressor outlet temperature is higher than the maximum temperature resistance of the material, a supercharger high temperature warning is performed; this method estimates the temperature of the engine supercharger compressor outlet through the engine speed and the supercharger compressor inlet temperature under different conditions of the vehicle, and when the estimated temperature is higher than the maximum temperature resistance of the supercharger or the opponent material, a high temperature warning is performed, which can timely detect the risk of high temperature overheating, avoid potential component damage or failure, help reduce wear, extend the service life of the supercharger, and reduce maintenance frequency and cost.

[0060] It should be noted that the execution subject of this embodiment may be a computing service device with data processing, network communication and program running functions, such as a tablet computer, a personal computer, a mobile phone, etc., or an electronic device capable of realizing the above functions, a supercharger high temperature warning device, etc. The following takes the supercharger high temperature warning device as an example to illustrate this embodiment and the following embodiments.

[0061] Based on this, the embodiment of the present application provides a supercharger high temperature warning method, referring to Figure 1 , Figure 1 This is a flow chart of the first embodiment of the supercharger high temperature warning method of the present application.

[0062] In this embodiment, the supercharger high temperature warning method includes steps S10 to S40:

[0063] Step S10, obtaining the engine speed of the vehicle and the inlet temperature of the supercharger compressor.

[0064] It is understandable that the supercharger compressor inlet temperature may be the temperature monitored by a temperature sensor at the inlet of the engine supercharger; the sensor may generally be arranged on the intake pipe.

[0065] It should be understood that different operating conditions may occur during the driving of the vehicle. Under different operating conditions, the engine has corresponding different speeds, so that the supercharger has different working states.

[0066] Step S20, obtaining the compressor efficiency of the supercharger according to the engine speed based on the supercharger performance map.

[0067] It is understood that the supercharger performance diagram is a pre-drawn diagram that can describe the relationship between various performances of the vehicle supercharger. For specific supercharger performance diagrams, please refer to Figure 2In the figure, the horizontal axis is the equivalent flow rate, the vertical axis is the pressure increase ratio, and the dotted circle is the iso-high efficiency curve.

[0068] It should be understood that, according to the turbocharger, the horizontal coordinate is the reduced flow rate, and the vertical coordinate is the compression ratio, the iso-efficiency curve corresponding to the reduced flow rate and the compression ratio can be located, thereby determining the turbocharger compressor efficiency, that is, the efficiency of the turbocharger at the working point.

[0069] In a feasible implementation, step S20 may include steps A21 to A23:

[0070] Step A21, obtaining the current air flow and boost pressure of the vehicle according to the engine speed.

[0071] It is understandable that the supercharger speed can be obtained according to the engine speed, and the driving condition of the vehicle can be determined according to the supercharger speed, so that the air flow of the engine can be determined according to the driving condition of the vehicle.

[0072] It should be noted that air flow refers to the mass of air passing through the supercharger per unit time, reflecting the ability of the engine intake system to deliver air, and is crucial for evaluating the performance of the supercharger. Higher air flow means more air is compressed and passes through the engine, which generally results in higher engine output power.

[0073] It will be appreciated that the air flow rate may be measured directly by a mass flow sensor installed in the intake system, or it may be inferred using fuel consumption data combined with knowledge of the engine characteristics.

[0074] It should be noted that the boost pressure of the supercharger refers to the pressure at the exhaust port. In the case of a turbocharger or a supercharger, the boost pressure is achieved by compressing the air in order to increase the density of the engine's intake air, thereby increasing the engine's power output and torque.

[0075] It is understandable that the boost pressure is the compressor outlet pressure. The current boost ratio is obtained according to the boost pressure and the compressor inlet pressure.

[0076] Step A22, obtaining the current equivalent flow rate according to the current air flow rate, and obtaining the current boost ratio according to the boost pressure and the compressor inlet pressure.

[0077] It is understandable that the reduced flow rate can be a standardized flow index used on the supercharger performance diagram, which is used to compare the performance of different superchargers and is usually based on the air flow rate under standard conditions, that is, the air flow rate at standard atmospheric pressure (1 bar or 101.3 kPa) and standard temperature (25°C or 298K).

[0078] It should be noted that the equivalent flow rate is calculated by converting the actual air flow rate into an equivalent flow rate under standard conditions.

[0079] It should be noted that the current boost ratio is obtained by dividing the boost pressure by the compressor inlet pressure.

[0080] It is understandable that the pressure of the gas after supercharging is called the boost pressure, that is, the pressure at the outlet of the supercharger compressor.

[0081] Step A23, obtaining the compressor efficiency of the supercharger based on the supercharger performance map, the current equivalent flow rate and the current boost ratio.

[0082] Understandably, based on Figure 2 It can be clearly seen from the supercharger performance diagram that any point in the supercharger performance diagram can be located according to the reduced flow rate on the horizontal axis and the pressure ratio on the vertical axis.

[0083] It should be noted that the corresponding supercharger compressor efficiency can be determined in the supercharger performance map according to the current reduced flow rate and the current pressure ratio.

[0084] In this embodiment, the boost efficiency corresponding to the reduced flow rate and the boost ratio is located through the supercharger performance map, so that the post-boost temperature can be evaluated based on the boost efficiency, and a high temperature warning can be issued more accurately.

[0085] The above are only feasible implementations of step S20 provided in this embodiment, and this embodiment does not specifically limit the specific implementation of step S20.

[0086] Step S30, obtaining the supercharger compressor outlet temperature according to the supercharger compressor inlet temperature and the supercharger compressor efficiency.

[0087] It is understood that the supercharger compressor outlet temperature refers to the temperature of the air compressed by the turbocharger or supercharger when it leaves the supercharger.

[0088] In a feasible implementation, step S30 may include steps A31 to A32:

[0089] Step A31, obtaining a temperature adjustment value according to the supercharger compressor efficiency, the supercharger compressor inlet temperature, the current compression ratio and the air adiabatic index.

[0090] It is understood that the adiabatic index of air is an important thermodynamic parameter used to describe the behavior of air under adiabatic conditions (ie without heat exchange).

[0091] It should be understood that the temperature adjustment value may be an evaluation value of the effect of the supercharger on the gas temperature, and may be calculated based on the supercharger compressor efficiency, the supercharger compressor inlet temperature, the current pressure ratio, and the air adiabatic index.

[0092] It should be noted that the temperature adjustment value is obtained according to the supercharger compressor efficiency, the supercharger compressor inlet temperature, the current compression ratio and the air adiabatic index, including: obtaining the air adiabatic index; obtaining a reference temperature according to the air adiabatic index, the supercharger compressor inlet temperature and the current compression ratio; and obtaining the temperature adjustment value according to the reference temperature and the supercharger compressor efficiency.

[0093] Among them, in the specific implementation, Figure 2 Taking the operating point A in as an example, the reference temperature can refer to the following formula:

[0094]

[0095] Wherein, TA represents the compressor inlet temperature of the supercharger, πA represents the current compression ratio, C represents the reference temperature, K represents the air adiabatic index, k=1.4.

[0096] Furthermore, the temperature adjustment value can refer to the following formula:

[0097]

[0098] Where ηA represents the compressor efficiency of the supercharger, C 调 Indicates the temperature adjustment value.

[0099] Step A32, obtaining the supercharger compressor outlet temperature according to the temperature parameter and the supercharger compressor inlet temperature.

[0100] It should be noted that the supercharger compressor outlet temperature obtained according to the temperature parameter and the supercharger compressor inlet temperature can be obtained by adding the temperature parameter to the supercharger compressor inlet temperature. For details, refer to the following formula:

[0101] TB=C key+TA

[0102] It is understandable that the temperature unit in the calculation process is Kelvin. If it is compared with Celsius, the conversion of different temperature units is also involved.

[0103] In this embodiment, the turbocharger compressor outlet temperature is monitored in real time through the vehicle condition and the turbocharger inlet temperature, and the turbocharger outlet temperature under specific working conditions is accurately evaluated. By monitoring the turbocharger compressor outlet temperature, high temperature problems can be discovered early and measures can be taken, thereby extending the service life of the turbocharger and the counterpart.

[0104] The above are only feasible implementations of step S30 provided in this embodiment, and this embodiment does not specifically limit the specific implementation of step S30.

[0105] Step S40, when the outlet temperature of the supercharger compressor is higher than the maximum temperature resistance of the material, a supercharger high temperature warning is issued.

[0106] It should be noted that the maximum temperature resistance of the material may refer to the maximum temperature resistance of the supercharger material or the counterpart material.

[0107] It should be noted that the supercharger high temperature warning can be a voice prompt, a pop-up prompt in the vehicle display, or directly lighting up the vehicle's high temperature fault light for a prompt.

[0108] The present embodiment provides a supercharger high temperature warning method, which estimates the temperature of the engine after supercharging by using the engine speed under different vehicle conditions and the temperature at the supercharger inlet. When the estimated temperature is higher than the maximum temperature resistance of the supercharger or the opponent material, a high temperature warning is issued, which can timely detect the risk of high temperature overheating, avoid potential component damage or failure, help reduce wear, extend the service life of the supercharger, and reduce maintenance frequency and cost.

[0109] Based on the first embodiment of the present application, in the second embodiment of the present application, the same or similar contents as those in the above-mentioned embodiment 1 can be referred to the above introduction, and will not be repeated in the following. Figure 3 , step S40, the supercharger high temperature warning method further includes steps S41 to S43:

[0110] Step S41, obtaining the maximum temperature resistance of the supercharger material and the maximum temperature resistance of the opponent material.

[0111] It is understood that the supercharger material or turbocharger material is predetermined and can be consulted in a technical manual or specification sheet provided by the turbocharger manufacturer, which usually lists the materials of the supercharger blades and housing and the recommended maximum operating temperature.

[0112] It should be noted that the counterpart material usually refers to the parts adjacent to or in contact with the supercharger. Consult the technical manual or specification sheet of the component to understand the materials used and their maximum temperature resistance.

[0113] Step S42, obtaining the maximum temperature resistance of the material according to the maximum temperature resistance of the supercharger material and the maximum temperature resistance of the counterpart material.

[0114] It should be noted that the outlet temperature of the supercharger compressor can contact the supercharger and also the counterpart. If a high temperature warning is performed, it is necessary to consider the impact of the high temperature on the material of the supercharger itself and the impact of the high temperature on the counterpart material at the connection of the supercharger.

[0115] It should be noted that the maximum temperature resistance of the material can be obtained by comparing the maximum temperature resistance of the supercharger material with the maximum temperature resistance of the opponent material, and taking the lower temperature of the two as the maximum temperature resistance of the material. In simple terms, the lower temperature of the two is taken as the maximum temperature resistance of the material.

[0116] In the specific implementation, the maximum temperature resistance is determined according to the properties of the compressor material and the counterpart material, which are recorded as TC and TD respectively. Take T0 = min{TC, TD}, then T0 is the maximum temperature that the gas can reach after pressurization. Once T0 is exceeded, the compressor or counterpart will overheat and exceed the use limit.

[0117] Step S43, when the outlet temperature of the supercharger compressor is higher than the maximum temperature resistance of the material, a supercharger high temperature warning is issued according to the outlet temperature of the supercharger compressor and the maximum temperature resistance of the material.

[0118] It is understandable that the outlet temperature of the supercharger compressor is higher than the maximum temperature resistance of the material, which is a prerequisite for high temperature warning. The high temperature warning strategy is specifically determined by the relationship between the outlet temperature of the supercharger compressor and the maximum temperature resistance of the material.

[0119] In a feasible implementation manner, the supercharger high temperature warning according to the supercharger compressor outlet temperature and the maximum temperature resistance of the material in step S43 may include steps A431 to A434:

[0120] Step A431, obtaining a warning temperature threshold according to the maximum temperature resistance of the material, wherein the warning temperature threshold includes a first warning temperature threshold and a second warning temperature threshold.

[0121] It is understandable that the warning temperature threshold can be used to determine the high temperature level of the turbocharger compressor outlet temperature, and can provide differentiated warnings for general high temperature and ultra-high temperature in a more targeted manner.

[0122] It should be noted that the first warning temperature threshold may be 0.95 times the maximum temperature resistance of the material, and the second warning temperature threshold may be 0.98 times the maximum temperature resistance of the material. Both may be adjusted according to actual needs, which is not limited in this embodiment.

[0123] It should be emphasized that the second warning temperature threshold is greater than the first warning temperature threshold, and the operating conditions of the second warning temperature threshold are more severe than those of the first warning temperature threshold. Therefore, the measure taken at the first warning temperature threshold is early warning, and the second warning temperature threshold is to force a reduction in the pressure ratio to protect the supercharger.

[0124] Step A432: when the outlet temperature of the supercharger compressor is less than or equal to the first warning temperature threshold, no high temperature warning is issued.

[0125] It is understandable that when the supercharger compressor outlet temperature is less than or equal to the first warning temperature threshold, it can be understood that the supercharger compressor outlet temperature is still within the temperature that the supercharger material and the opponent material can withstand, and no high temperature warning is required.

[0126] Step A433, when the outlet temperature of the supercharger compressor is less than the second warning temperature threshold and greater than or equal to the first warning temperature threshold, the high temperature fault lamp is turned on to issue a supercharger high temperature warning.

[0127] It can be understood that when the supercharger compressor outlet temperature is less than the second warning temperature threshold and greater than the first warning temperature threshold, it can be understood that the supercharger compressor outlet temperature is greater than 0.95 times the maximum temperature of the material and less than or equal to 0.98 times the maximum temperature resistance of the material.

[0128] It should be noted that lighting up the high-temperature fault light to issue a high-temperature warning for the supercharger can be to light up the high-temperature fault warning on the vehicle side to complete the high-temperature warning, or it can be to light up the high-temperature fault light and then issue a high-temperature pop-up window or high-temperature voice warning on the vehicle or user terminal.

[0129] Step A434, when the compressor outlet temperature of the supercharger is greater than the second warning temperature threshold, adjust the current boost ratio of the supercharger and light up the high temperature fault lamp to issue a supercharger high temperature warning.

[0130] It should be noted that when the outlet temperature of the supercharger compressor is greater than the second warning temperature threshold, the current boost ratio of the supercharger is adjusted and the high-temperature fault light is turned on to issue a supercharger high-temperature warning, including: when the outlet temperature of the supercharger compressor is greater than the second warning temperature threshold, the current boost ratio of the supercharger is obtained; a protection pressure ratio is obtained according to the current boost ratio, and a target boost ratio is obtained according to the protection pressure ratio; the current boost ratio is adjusted to the target boost ratio and the high-temperature fault light is turned on to issue a supercharger high-temperature warning.

[0131] It is understandable that the protection pressure ratio obtained according to the current pressure increase ratio may be a preset pressure ratio table for high temperature adjustment set in advance according to each pressure increase ratio. For details, please refer to the following Table 1:

[0132] Table 1

[0133]

[0134] Alternatively, a fixed ratio may be set as the protection pressure ratio according to the current pressure increase ratio, for example, 90% of the current pressure increase ratio may be set as the protection pressure ratio.

[0135] It should be noted that the target boost ratio may be 0.95-0.98 times the protection pressure ratio, may be randomly set based on this ratio, or may be any fixed ratio within this ratio, and may be adjusted according to actual conditions, which is not limited in this embodiment.

[0136] It should be noted that in order to reduce the temperature of the gas after supercharging, the compressor inlet temperature, compression ratio and efficiency are three key parameters: the compressor inlet temperature is closely related to the ambient intake temperature, the efficiency will affect the entire system, and the compression ratio affects the power of the vehicle (that is, it forces the engine torque to be limited). In general, adjusting the compression ratio is the best. Similarly, taking the gas temperature after supercharging as T0, the maximum compression ratio that does not exceed the temperature under the corresponding working condition can be calculated as a protection strategy under this working condition.

[0137] In specific implementation, the high temperature warning according to the outlet temperature of the supercharger compressor can be summarized based on Table 1 as follows: for any operating condition, at any speed n, when T2n≤0.95T0, the post-compression temperature is normal and no measures are taken; when 0.95T0<T2n≤0.98T0, the post-compression temperature is close to the limit value, a post-compression temperature high temperature warning is performed, and the post-compression temperature high temperature fault light is turned on; when 0.98T0<T2n, the post-compression temperature exceeds the warning value, the ECU forces the pressure ratio to be reduced to the corresponding π0n or below (to (0.95-0.98)π0n for best), and the supercharger and the receiving device are forcibly protected.

[0138] In this embodiment, by comparing the size relationship between the compressor outlet temperature of the supercharger and the maximum temperature resistance of the material, corresponding protective measures can be taken according to the temperature of the supercharger to avoid damage to parts.

[0139] The above is only a feasible implementation method of "performing a supercharger high temperature warning according to the supercharger compressor outlet temperature and the maximum temperature resistance of the material" in step S43 provided in this embodiment. This embodiment does not specifically limit the specific implementation method of step S43.

[0140] The present embodiment provides a supercharger high temperature warning method, which divides the high temperature warning into a variety of different situations by real-time monitoring of the supercharger compressor outlet temperature and comparing it with the maximum temperature resistance of the material. Different high temperature warning methods are given for different situations, which can provide more intuitive and accurate feedback to the user on the temperature status of the supercharger, detect overheating risks in time, and avoid potential component damage or failure.

[0141] It should be noted that the above examples are only used to understand the present application and do not constitute a limitation on the supercharger high temperature warning method of the present application. More simple transformations based on this technical concept are all within the protection scope of the present application.

[0142] This application also provides a supercharger high temperature warning device, please refer to Figure 4 , the supercharger high temperature warning device comprises:

[0143] An acquisition module 10 is used to acquire the engine speed of the vehicle and the inlet temperature of the supercharger compressor;

[0144] The acquisition module 10 is further used to obtain the compressor efficiency of the supercharger according to the engine speed based on the supercharger performance map;

[0145] A temperature calculation module 20, configured to obtain a supercharger compressor outlet temperature according to the supercharger compressor inlet temperature and the supercharger compressor efficiency;

[0146] The high temperature warning module 30 is used to issue a high temperature warning for the supercharger when the outlet temperature of the supercharger compressor is higher than the maximum temperature resistance of the material.

[0147] The supercharger high temperature warning device provided by the present application adopts the supercharger high temperature warning method in the above embodiment, which can solve the technical problem that the temperature of the gas after supercharging is too high, causing the supercharger and / or the counterpart to be damaged due to abnormal gas over-temperature. Compared with the prior art, the beneficial effects of the supercharger high temperature warning device provided by the present application are the same as the beneficial effects of the supercharger high temperature warning method provided by the above embodiment, and the other technical features of the supercharger high temperature warning device are the same as the features disclosed in the above embodiment method, which will not be repeated here.

[0148] The present application provides a supercharger high temperature warning device, the supercharger high temperature warning device includes: at least one processor; and a memory connected to the at least one processor in communication; wherein the memory stores instructions that can be executed by the at least one processor, and the instructions are executed by the at least one processor so that the at least one processor can execute the supercharger high temperature warning method in the above-mentioned embodiment one.

[0149] Reference below Figure 5 , which shows a schematic diagram of the structure of a supercharger high temperature warning device suitable for implementing the embodiment of the present application. The supercharger high temperature warning device in the embodiment of the present application may include but is not limited to mobile terminals such as mobile phones, laptop computers, digital broadcast receivers, PDAs (Personal Digital Assistants), PADs (Portable Application Descriptions), PMPs (Portable Media Players), vehicle-mounted terminals (such as vehicle-mounted navigation terminals), etc., and fixed terminals such as digital TVs, desktop computers, etc. Figure 5The supercharger high temperature warning device shown is only an example and should not bring any limitation to the functions and scope of use of the embodiments of the present application.

[0150] like Figure 5 As shown, the supercharger high temperature warning device may include a processing device 1001 (such as a central processing unit, a graphics processor, etc.), which can perform various appropriate actions and processes according to a program stored in a read-only memory (ROM: Read Only Memory) 1002 or a program loaded from a storage device 1003 to a random access memory (RAM: Random Access Memory) 1004. In RAM1004, various programs and data required for the operation of the supercharger high temperature warning device are also stored. The processing device 1001, ROM1002 and RAM1004 are connected to each other through a bus 1005. An input / output (I / O) interface 1006 is also connected to the bus. Typically, the following systems can be connected to the I / O interface 1006: input devices 1007 including, for example, a touch screen, a touchpad, a keyboard, a mouse, an image sensor, a microphone, an accelerometer, a gyroscope, etc.; output devices 1008 including, for example, a liquid crystal display (LCD), a speaker, a vibrator, etc.; storage devices 1003 including, for example, a magnetic tape, a hard disk, etc.; and communication devices 1009. The communication device 1009 can allow the supercharger high temperature warning device to communicate wirelessly or wired with other devices to exchange data. Although the figure shows a supercharger high temperature warning device with various systems, it should be understood that it is not required to implement or have all the systems shown. More or fewer systems may be implemented or have alternatively.

[0151] In particular, according to the embodiments disclosed in the present application, the process described above with reference to the flowchart can be implemented as a computer software program. For example, the embodiments disclosed in the present application include a computer program product, which includes a computer program carried on a computer-readable medium, and the computer program includes a program code for executing the method shown in the flowchart. In such an embodiment, the computer program can be downloaded and installed from a network through a communication device, or installed from a storage device 1003, or installed from a ROM 1002. When the computer program is executed by the processing device 1001, the above-mentioned functions defined in the method of the embodiment disclosed in the present application are executed.

[0152] The supercharger high temperature warning device provided by the present application adopts the supercharger high temperature warning method in the above embodiment, which can solve the technical problem that the temperature of the gas after supercharging is too high, causing the supercharger and / or the counterpart to be damaged due to abnormal gas over-temperature. Compared with the prior art, the beneficial effects of the supercharger high temperature warning device provided by the present application are the same as the beneficial effects of the supercharger high temperature warning method provided by the above embodiment, and the other technical features of the supercharger high temperature warning device are the same as the features disclosed in the method of the previous embodiment, which will not be repeated here.

[0153] It should be understood that the various parts disclosed in this application can be implemented by hardware, software, firmware or a combination thereof. In the description of the above embodiments, specific features, structures, materials or characteristics can be combined in any one or more embodiments or examples in a suitable manner.

[0154] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

[0155] The present application provides a computer-readable storage medium having computer-readable program instructions (ie, computer programs) stored thereon, and the computer-readable program instructions are used to execute the supercharger high temperature warning method in the above-mentioned embodiment.

[0156] The computer-readable storage medium provided in the present application may be, for example, a USB flash drive, but is not limited to electrical, magnetic, optical, electromagnetic, infrared, or semiconductor systems, systems or devices, or any combination of the above. More specific examples of computer-readable storage media may include, but are not limited to: an electrical connection with one or more wires, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the above. In this embodiment, the computer-readable storage medium may be any tangible medium containing or storing a program that can be used by or in combination with an instruction execution system, system or device. The program code contained on the computer-readable storage medium may be transmitted using any appropriate medium, including but not limited to: wires, optical cables, RF (Radio Frequency), etc., or any suitable combination of the above.

[0157] The computer-readable storage medium may be included in the supercharger high temperature warning device; or may exist independently without being assembled into the supercharger high temperature warning device.

[0158] The computer-readable storage medium carries one or more programs. When the one or more programs are executed by the supercharger high temperature warning device, the supercharger high temperature warning device: obtains the engine speed and supercharger compressor inlet temperature of the vehicle; obtains the supercharger compressor efficiency according to the engine speed based on the supercharger performance diagram; obtains the supercharger compressor outlet temperature according to the supercharger compressor inlet temperature and the supercharger compressor efficiency; and issues a supercharger high temperature warning when the supercharger compressor outlet temperature is higher than the maximum temperature resistance of the material.

[0159] Computer program code for performing the operations of the present application may be written in one or more programming languages ​​or a combination thereof, including object-oriented programming languages ​​such as Java, Smalltalk, C++, and conventional procedural programming languages ​​such as "C" or similar programming languages. The program code may be executed entirely on the user's computer, partially on the user's computer, as a separate software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In the case of a remote computer, the remote computer may be connected to the user's computer through any type of network, including a local area network (LAN) or a wide area network (WAN), or may be connected to an external computer (e.g., via the Internet using an Internet service provider).

[0160] The flow chart and block diagram in the accompanying drawings illustrate the possible architecture, function and operation of the system, method and computer program product according to various embodiments of the present application. In this regard, each square box in the flow chart or block diagram can represent a module, a program segment or a part of a code, and the module, the program segment or a part of the code contains one or more executable instructions for realizing the specified logical function. It should also be noted that in some alternative implementations, the functions marked in the square box can also occur in a sequence different from that marked in the accompanying drawings. For example, two square boxes represented in succession can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, depending on the functions involved. It should also be noted that each square box in the block diagram and / or flow chart, and the combination of the square boxes in the block diagram and / or flow chart can be implemented with a dedicated hardware-based system that performs a specified function or operation, or can be implemented with a combination of dedicated hardware and computer instructions.

[0161] The modules involved in the embodiments described in this application may be implemented by software or hardware, wherein the name of the module does not constitute a limitation on the unit itself in some cases.

[0162] The readable storage medium provided by the present application is a computer-readable storage medium, which stores computer-readable program instructions (i.e., computer programs) for executing the above-mentioned supercharger high temperature warning method, and can solve the technical problem that the temperature of the gas after supercharging is too high, causing the supercharger and / or the counterpart to be damaged due to abnormal gas overtemperature. Compared with the prior art, the beneficial effects of the computer-readable storage medium provided by the present application are the same as the beneficial effects of the supercharger high temperature warning method provided by the above-mentioned embodiment, and will not be repeated here.

[0163] The present application also provides a computer program product, including a computer program, wherein when the computer program is executed by a processor, the steps of the supercharger high temperature warning method as described above are implemented.

[0164] The computer program product provided by the present application can solve the technical problem that the temperature of the gas after supercharging is too high, causing the supercharger and / or the counterpart to be damaged due to abnormal gas over-temperature. Compared with the prior art, the beneficial effects of the computer program product provided by the present application are the same as those of the supercharger high temperature warning method provided by the above embodiment, and will not be elaborated here.

[0165] The above descriptions are only some embodiments of the present application, and are not intended to limit the patent scope of the present application. All equivalent structural changes made using the contents of the present application specification and drawings under the technical concept of the present application, or direct / indirect applications in other related technical fields are included in the patent protection scope of the present application.

Claims

1. A supercharger high temperature early warning method, characterized in that: The supercharger high temperature early warning method comprises: Obtain the vehicle's engine speed and supercharger compressor inlet temperature; Obtaining a supercharger compressor efficiency according to the engine speed based on a supercharger performance map; Obtaining a supercharger compressor outlet temperature according to the supercharger compressor inlet temperature and the supercharger compressor efficiency; When the outlet temperature of the supercharger compressor is higher than the maximum temperature resistance of the material, a supercharger high temperature warning is issued.

2. The supercharger high temperature early warning method according to claim 1, characterized in that: The obtaining the compressor efficiency of the supercharger according to the engine speed based on the supercharger performance map includes: Obtaining a current air flow and a boost pressure of the vehicle according to the engine speed; Obtaining a current equivalent flow rate according to the current air flow rate, and obtaining a current boost ratio according to the boost pressure and the compressor inlet pressure; The supercharger compressor efficiency is obtained based on the supercharger performance map, the current reduced flow rate and the current pressure ratio.

3. The supercharger high temperature early warning method according to claim 2, characterized in that: The step of obtaining the supercharger compressor outlet temperature according to the supercharger compressor inlet temperature and the supercharger compressor efficiency comprises: Obtaining a temperature adjustment value according to the supercharger compressor efficiency, the supercharger compressor inlet temperature, the current compression ratio, and the air adiabatic index; The supercharger compressor outlet temperature is obtained according to the temperature parameter and the supercharger compressor inlet temperature.

4. The supercharger high temperature early warning method according to claim 3, characterized in that: The obtaining of the temperature adjustment value according to the supercharger compressor efficiency, the supercharger compressor inlet temperature, the current compression ratio and the air adiabatic index includes: Get the air adiabatic index; Obtaining a reference temperature according to the air adiabatic index, the supercharger compressor inlet temperature and the current pressure ratio; A temperature adjustment value is obtained according to the reference temperature and the supercharger compressor efficiency.

5. The supercharger high temperature early warning method according to claim 1, characterized in that: When the outlet temperature of the supercharger compressor is higher than the maximum temperature resistance of the material, a supercharger high temperature warning is performed, including: Obtain the highest temperature resistance of the supercharger material and the highest temperature resistance of the opponent material; The maximum temperature resistance of the material is obtained according to the maximum temperature resistance of the supercharger material and the maximum temperature resistance of the counterpart material; When the outlet temperature of the supercharger compressor is higher than the maximum temperature resistance of the material, a supercharger high temperature warning is issued according to the outlet temperature of the supercharger compressor and the maximum temperature resistance of the material.

6. The supercharger high temperature early warning method according to claim 5, characterized in that: The supercharger high temperature warning is performed according to the supercharger compressor outlet temperature and the maximum temperature resistance of the material, including: Obtaining a warning temperature threshold according to the maximum temperature resistance of the material, wherein the warning temperature threshold includes a first warning temperature threshold and a second warning temperature threshold; When the outlet temperature of the supercharger compressor is less than or equal to the first warning temperature threshold, no high temperature warning is issued; When the compressor outlet temperature of the supercharger is lower than the second warning temperature threshold and greater than or equal to the first warning temperature threshold, a high temperature fault lamp is turned on to issue a supercharger high temperature warning; When the compressor outlet temperature of the supercharger is greater than the second warning temperature threshold, the current boost ratio of the supercharger is adjusted and the high temperature fault lamp is turned on to issue a high temperature warning for the supercharger.

7. The supercharger high temperature early warning method according to claim 6, characterized in that: When the compressor outlet temperature of the supercharger is greater than the second warning temperature threshold, adjusting the current boost ratio of the supercharger and lighting up the high temperature fault lamp to issue a supercharger high temperature warning, includes: When the compressor outlet temperature of the supercharger is greater than the second warning temperature threshold, obtaining a current boost ratio of the supercharger; Obtaining a protection pressure ratio according to the current pressure increase ratio, and obtaining a target pressure increase ratio according to the protection pressure ratio; The current boost ratio is adjusted to the target boost ratio and a high temperature fault lamp is turned on to issue a supercharger high temperature warning.

8. A supercharger high temperature warning device, characterized in that: The supercharger high temperature early warning device comprises: An acquisition module, used for acquiring an engine speed of a vehicle and a supercharger compressor inlet temperature; The acquisition module is further used to obtain the compressor efficiency of the supercharger according to the engine speed based on the supercharger performance map; A temperature calculation module, used for obtaining a supercharger compressor outlet temperature according to the supercharger compressor inlet temperature and the supercharger compressor efficiency; The high temperature warning module is used to issue a high temperature warning for the supercharger when the outlet temperature of the supercharger compressor is higher than the maximum temperature resistance of the material.

9. A supercharger high temperature warning device, characterized in that: The device comprises: a memory, a processor, and a supercharger high temperature warning program stored in the memory and executable on the processor, wherein the supercharger high temperature warning program is configured to implement the supercharger high temperature warning method according to any one of claims 1 to 7.

10. A storage medium, characterized in that: The storage medium stores a supercharger high temperature warning program, and when the supercharger high temperature warning program is executed by the processor, the supercharger high temperature warning method according to any one of claims 1 to 7 is implemented.

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