A method, system and electronic equipment for matching a turbocharger with an engine

Abstract

The present invention provides a method, system, and electronic device for matching a turbocharger with an engine. The method comprises: writing a functional relationship of technical parameters related to the turbocharger and characteristic test data of the turbocharger's compressor and turbine into the engine's electronic control unit; the electronic control unit reads the test data of the turbocharger related to the functional relationship and obtains the test parameters of the turbocharger based on the test data and the functional relationship; and the electronic control unit outputs a comparison result between the test parameters and the characteristic test data for matching calibration between the turbocharger and the engine. This method is used to address the defects of the prior art in that matching calibration is labor-intensive, inefficient, and requires reliance on the work experience of engineers, thereby achieving efficient and convenient matching calibration between the turbocharger and the engine.

Description

Technical Field

[0001] The present invention relates to the technical field of turbocharger and engine matching development, and in particular to a turbocharger and engine matching method, system and electronic equipment. Background Art

[0002] A turbocharger (hereinafter referred to as a "supercharger") is actually an air compressor that increases the intake volume by compressing air. It uses the inertial force of the exhaust gas discharged by the engine to drive the turbine in the turbine chamber. The turbine in turn drives the coaxial impeller, which pressurizes the air sent from the air filter duct and pressurizes it into the cylinder. When the engine speed increases, the exhaust gas discharge speed and the turbine speed also increase synchronously. The impeller compresses more air into the cylinder. The increased air pressure and density can burn more fuel. Increasing the fuel amount and adjusting the engine speed accordingly can increase the engine's output power. It can be seen that the compressor and turbine are important performance components of the supercharger. Whether the compressor and turbine are well matched with the engine has a great impact on the matching performance and reliability of the supercharger and engine.

[0003] The current method for matching a supercharger to an engine is for the supercharger supplier to provide the supercharger to the engine development unit. The supercharger is then tested on an engine test bench to match the engine performance. The engine test data is then fed back to the supercharger supplier for analysis of the compressor and turbine characteristics. The two parties then communicate and evaluate whether the supercharger is properly matched and whether adjustments are needed. This process is repeated. After completing the calibration on plains, the engine is then tested at high altitudes to confirm the proper matching and whether adjustments are needed.

[0004] This matching calibration method requires repeated communication and parameter adjustments between engine developers and turbocharger engineers. This not only results in a large workload, but also slow response and improvement speed, resulting in low work efficiency. At the same time, it also requires a high level of experience from engineers. For new engineers with less experience, it is easy for the turbocharger and engine matching calibration to fail, thus wasting time and test resources. Summary of the Invention

[0005] The present invention provides a method, system and electronic equipment for matching a turbocharger and an engine, which are used to solve the defects of the existing technology, such as large workload, low efficiency and reliance on the work experience of engineers, and realize efficient and convenient matching calibration of turbochargers and engines.

[0006] The present invention provides a method for matching a turbocharger with an engine, comprising:

[0007] Writing functional relationships of relevant technical parameters of the supercharger and characteristic test data of the compressor and turbine of the supercharger into the electronic control unit of the engine;

[0008] The electronic control unit reads test data of the supercharger related to the functional relationship, and obtains test parameters of the supercharger according to the test data and the functional relationship;

[0009] The electronic control unit outputs a comparison result between the test parameters used for matching calibration of the supercharger and the engine and the characteristic test data.

[0010] According to the method for matching a turbocharger with an engine of the present invention, the turbocharger-related technical parameters specifically include multiple or all of the following:

[0011] Overall supercharger efficiency, and

[0012] Relevant technical parameters of the compressor of the supercharger: compression ratio, compressor adiabatic efficiency, compressor reduced flow rate, and compressor reduced speed;

[0013] The relevant technical parameters of the turbine of the supercharger are: turbine expansion ratio, turbine similar flow, turbine similar speed, and turbine effective efficiency.

[0014] According to the method for matching a turbocharger with an engine of the present invention, after writing the functional relationship of the turbocharger-related technical parameters and the characteristic test data of the turbocharger compressor and turbine into the engine electronic control unit, the method further includes:

[0015] The preset lower limit value of the compressor surge margin and the preset lower limit value of the compressor impeller plateau margin are written into the electronic control unit.

[0016] According to the turbocharger and engine matching method of the present invention, writing the preset lower limit value of the compressor surge margin and the preset lower limit value of the compressor impeller plateau margin into the electronic control unit specifically includes:

[0017] Writing a preset first lower limit value and a preset second lower limit value of the compressor surge margin; and a preset first lower limit value and a preset second lower limit value of the compressor impeller plateau margin into the electronic control unit respectively; the preset first lower limit value of the compressor surge margin is greater than the preset second lower limit value; the preset first lower limit value of the compressor impeller plateau margin is greater than the preset second lower limit value;

[0018] The preset first lower limit value of the compressor surge margin represents the lower limit of the supercharger surge margin; the preset second lower limit value of the compressor surge margin represents the lower limit of the supercharger surge;

[0019] The preset first lower limit value of the compressor impeller plateau margin represents the lower limit of the supercharger compressor impeller plateau margin; the preset second lower limit value of the compressor impeller plateau margin represents the upper limit of the supercharger compressor impeller speed.

[0020] According to the turbocharger and engine matching method of the present invention, the electronic control unit reads the test data of the supercharger related to the functional relationship, and obtains the test parameters of the supercharger according to the test data and the functional relationship, which specifically includes:

[0021] The electronic control unit reads the compressor operating intake similar flow rate of the supercharger and the actual operating speed of the compressor impeller;

[0022] Obtaining the compressor surge margin according to the surge flow of the compressor corresponding to the characteristic test data of the compressor and the turbine at a similar intake flow rate of the compressor and a same pressure ratio;

[0023] The compressor impeller plateau margin is obtained according to the actual operating speed of the compressor impeller and the corresponding maximum allowable operating speed of the compressor impeller in the characteristic test data of the compressor and the turbine.

[0024] According to the turbocharger and engine matching method of the present invention, the comparison result between the test parameters output by the electronic control unit for matching calibration between the turbocharger and the engine and the characteristic test data specifically includes:

[0025] During plain calibration, when the compressor surge margin is lower than a preset first lower limit value of the compressor surge margin, or the compressor impeller plateau margin is lower than a preset first lower limit value of the compressor impeller plateau margin, the electronic control unit outputs a first warning message for prompting an engine parameter adjustment;

[0026] During plateau calibration, when the compressor surge margin is lower than a preset second lower limit value of the compressor surge margin, or the compressor impeller plateau margin is lower than the preset second lower limit value of the compressor impeller plateau margin, the electronic control unit outputs a second warning message for prompting an engine parameter adjustment;

[0027] When the compressor surge margin and the compressor impeller plateau margin both meet preset lower limit requirements and when the total efficiency of the supercharger is lower than a preset efficiency threshold, the electronic control unit outputs a third warning message for prompting an engine parameter adjustment.

[0028] According to the turbocharger and engine matching method of the present invention, after writing the compressor and turbine characteristic test data provided by the turbocharger manufacturer into the engine electronic control unit, the method further includes:

[0029] constructing the supercharger characteristic map according to the characteristic test data of the supercharger;

[0030] After obtaining the test parameters of the supercharger through the test data and the functional relationship, the method further includes:

[0031] The test parameters are marked on the supercharger characteristic diagram.

[0032] The present invention also provides a turbocharger and engine matching system, comprising:

[0033] A writing module, used to write the functional relationship of the supercharger-related technical parameters and the characteristic test data of the supercharger compressor and turbine into the electronic control unit of the engine;

[0034] a reading and calculating module, configured for the electronic control unit to read test data of the supercharger related to the functional relationship, and obtain test parameters of the supercharger through the test data and the functional relationship;

[0035] A comparison module is configured to output, by the electronic control unit, a comparison result between the test parameters used for matching calibration of the supercharger and the engine and the characteristic test data.

[0036] The present invention also provides an electronic device comprising a memory, a processor and a computer program stored in the memory and executable on the processor, wherein when the processor executes the program, the steps of any of the above-described methods for matching a turbocharger with an engine are implemented.

[0037] The present invention also provides a computer storage medium, characterized in that a computer program is stored thereon, and when the computer program is executed, the steps of any of the above-mentioned methods for matching a turbocharger with an engine are implemented.

[0038] The present invention provides a method, system and electronic equipment for matching a turbocharger with an engine. The method presets a functional relationship between technical parameters related to the turbocharger and characteristic test data of the turbocharger in an electronic control unit of the engine; reads test data of the turbocharger related to the functional relationship according to the electronic control unit, and obtains test parameters of the turbocharger through the test data and the functional relationship; finally, the electronic control unit outputs a comparison result between the test parameters and the characteristic test data for matching calibration of the turbocharger and the engine, thereby realizing matching analysis of the turbocharger and the engine using the comparison result, facilitating engine developers to calibrate and optimize the matching of the turbocharger and the engine, reducing the workload of engine developers, and improving work efficiency. In addition, the turbocharger and the engine are matched and calibrated from two dimensions, namely, the compressor and the turbine, effectively improving the development success rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0040] Figure 1 This is one of the flow diagrams of a method for matching a turbocharger and an engine provided by the present invention;

[0041] Figure 2 This is the second flow chart of a method for matching a turbocharger and an engine provided by the present invention;

[0042] Figure 3 This is a structural schematic diagram of a turbocharger and engine matching system provided by the present invention;

[0043] Figure 4 It is a structural schematic diagram of the electronic device provided by the present invention. DETAILED DESCRIPTION

[0044] To make the objectives, technical solutions, and advantages of the present invention more clear, the technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0045] The following combination Figure 1 and Figure 2A method for matching a turbocharger and an engine according to the present invention is described.

[0046] like Figure 1 As shown, the method for matching a turbocharger with an engine includes the following steps:

[0047] 101. Write the functional relationship of the supercharger-related technical parameters and the characteristic test data of the supercharger compressor and turbine into the electronic control unit of the engine.

[0048] It should be noted that the data recorded in the engine's electronic control unit are direct data obtained from the compressor outlet, air inlet, turbine inlet, etc. during the test of the supercharger and engine, and these data cannot be directly applied to the matching calibration of the supercharger and the engine. Instead, it is necessary to calculate the characteristic test data of the supercharger provided by the supercharger manufacturer based on these data. By writing a functional relationship related to the technical parameters of the supercharger into the engine's electronic control unit, the electronic control unit can obtain the characteristic test data of the supercharger provided by the supercharger manufacturer from the data recorded during the test of the engine and supercharger, which facilitates the subsequent matching calibration of the supercharger and the engine.

[0049] On the other hand, the superchargers will undergo rigorous testing before leaving the factory to ensure the quality of the superchargers leaving the factory. The compressor and turbine characteristic test data of the supercharger, such as the compressor's pressure ratio, the turbine expansion ratio of the turbine, the turbine efficiency, etc., are data that must be tested before the supercharger leaves the factory.

[0050] 102. The electronic control unit reads test data of the supercharger related to the functional relationship, and obtains test parameters of the supercharger through the test data and the functional relationship.

[0051] 103. The electronic control unit outputs a comparison result between the test parameters used for matching calibration between the supercharger and the engine and the characteristic test data.

[0052] It should be noted that the test data of the supercharger read by the electronic control unit and the functional relationship are the test parameters of the supercharger, that is, the measured parameters during the matching and calibration process of the supercharger and the engine, while the characteristic test data of the supercharger preset in the electronic control unit of the engine are the theoretical operating data of the supercharger obtained by the supercharger manufacturer. Therefore, based on the comparison results between the measured parameters and the theoretical operating data, the electronic control unit can enable engineers to calibrate the matching of the supercharger and the engine. Through intuitive comparison of data, the requirement for engineers to have rich work experience is avoided, the development success rate is improved, and feedback and communication with the supercharger manufacturer are avoided, thereby effectively improving work efficiency.

[0053] Furthermore, different functional relationships related to the technical parameters of the supercharger's compressor and turbine, as well as the compressor and turbine characteristic test data provided by the supercharger manufacturer, can be written into the engine's electronic control unit to meet different matching calibration requirements.

[0054] During the calibration process of engine and turbocharger matching, the parameters currently considered are mainly the compression ratio and reduced flow rate. However, there is a large amount of characteristic test data for turbochargers. Matching calibration based on multiple characteristic test data is more beneficial to improving the matching degree between engine and turbocharger, thereby improving engine reliability.

[0055] Based on this, in one embodiment of the present invention, the supercharger-related technical parameters include multiple or all of the following:

[0056] Overall supercharger efficiency, and

[0057] Relevant technical parameters of the compressor of the supercharger: compression ratio, compressor adiabatic efficiency, compressor reduced flow rate, and compressor reduced speed;

[0058] The relevant technical parameters of the turbine of the supercharger are: turbine expansion ratio, turbine similar flow, turbine similar speed, and turbine effective efficiency.

[0059] It should be noted that based on the different performance requirements for various aspects of the engine, characteristic test data for matching and calibrating the supercharger and engine can be flexibly selected, and the supercharger and engine can be matched and calibrated from two dimensions: the compressor and the turbine, effectively improving the development success rate.

[0060] Furthermore, the functional relationship involved in the above embodiment is specifically:

[0061] Pressure ratio in, is the total pressure of the gas at the compressor outlet, is the total inlet gas pressure.

[0062] Turbine expansion ratio in, is the total pressure of the turbine inlet gas, and P2 is the static pressure of the outlet gas.

[0063] Compressor adiabatic efficiency (compressor efficiency for short) It is the ratio of the adiabatic temperature rise of the gas at the inlet and outlet of the compressor to the actual temperature rise when the gas is compressed to a certain pressure ratio. It is defined as the ratio of the adiabatic compression work to the actual compression work when the gas is compressed to a certain pressure ratio. is the total temperature of the gas at the compressor inlet, in K; is the total temperature of the gas at the compressor outlet, in K; K is the air adiabatic index.

[0064] Compressor reduced flow Among them, G c is the measured flow rate of the compressor, in kg / s; where 298 is the Kelvin temperature T = 25 + 273.

[0065] Compressor reduced speed Where n is the actual speed of the supercharger, in r / min.

[0066] Turbine similar flow Among them, G T is the measured flow rate of the turbine, in kg / s; is the total temperature of the gas at the turbine inlet, in K.

[0067] Turbine similar speed

[0068] Turbine effective efficiency (abbreviated as turbine efficiency) Among them, K T is the gas adiabatic index; R is the air gas constant, the unit is J / kg·K; R T is the gas constant of the fuel gas, the unit is J / kg·K, R T =287.4J / kg·K.

[0069] Turbocharger total efficiency η TC =η c η T .

[0070] It is understandable that when the surge margin and plateau margin of the supercharger are insufficient, the supercharger plateau calibration will fail, and then the supercharger plateau failure and insufficient plateau capacity will occur.

[0071] Based on this, in another embodiment of the present invention, a preset lower limit value of the compressor surge margin and a preset lower limit value of the compressor impeller plateau margin are also written into the electronic control unit.

[0072] It should be noted that by writing the preset lower limit value of the compressor surge margin and the preset lower limit value of the compressor impeller plateau margin into the electronic control unit, the supercharger surge margin and plateau margin can be taken into account in the matching calibration of the engine and supercharger, thereby preventing the failure of the supercharger plateau calibration due to insufficient supercharger surge margin and plateau margin, wasting a lot of time and test resources, etc., and after matching calibration, the possibility of supercharger plateau failure is reduced, and the reliability and plateau capability of the engine are improved.

[0073] It is understandable that the matching calibration of the turbocharger and the engine needs to be completed after the plain calibration, and then the matching calibration of the engine and supercharger in the high altitude area is carried out.

[0074] Based on this, in another embodiment of the present invention, the preset first lower limit value and the preset second lower limit value of the compressor surge margin; and the preset first lower limit value and the preset second lower limit value of the compressor impeller plateau margin are respectively written into the electronic control unit;

[0075] The preset first lower limit value of the compressor surge margin represents the lower limit of the supercharger surge margin; the preset second lower limit value of the compressor surge margin represents the lower limit of the supercharger surge;

[0076] The preset first lower limit value of the compressor impeller plateau margin represents the lower limit of the supercharger compressor impeller plateau margin; the preset second lower limit value of the compressor impeller plateau margin represents the upper limit of the supercharger compressor impeller speed.

[0077] It should be noted that when the turbocharger compressor surge margin is lower than the preset first lower limit value A, it indicates that the surge margin is insufficient; when it is lower than the preset second lower limit value B, it indicates that the turbocharger compressor is surging. When the turbocharger compressor impeller plateau margin is lower than the preset first lower limit value C, it indicates that the turbocharger compressor impeller plateau margin is insufficient; when it is lower than the preset second lower limit value D, it indicates that the turbocharger compressor impeller is overspeeding.

[0078] Specifically, A should be greater than B, and C should be greater than D. After experimental testing, the value of A can be 10%, the value of B can be 0% or 1%, the value of C can be 12%, and the value of D can be 0% or 1%.

[0079] In another embodiment of the present invention, a method for calculating the compressor surge margin and the compressor impeller plateau margin is specifically described, including:

[0080] The electronic control unit reads the compressor operating intake similar flow rate of the supercharger and the actual operating speed of the compressor impeller;

[0081] Obtaining the compressor surge margin according to the surge flow of the compressor corresponding to the characteristic test data of the compressor and the turbine at a similar intake flow rate of the compressor and a same pressure ratio;

[0082] The compressor impeller plateau margin is obtained according to the actual operating speed of the compressor impeller and the corresponding maximum allowable operating speed of the compressor impeller in the characteristic test data of the compressor and the turbine.

[0083] It should be noted that the calculation formula for the surge margin of the turbocharger compressor is:

[0084]

[0085]

[0086] Among them, the maximum allowable operating speed of the impeller is obtained from the characteristic test data provided by the turbocharger manufacturer.

[0087] In another embodiment of the present invention, it is further specifically described that during plain calibration, when the compressor surge margin is lower than a preset first lower limit value of the compressor surge margin, or the compressor impeller plateau margin is lower than a preset first lower limit value of the compressor impeller plateau margin, the electronic control unit outputs a first warning message for prompting to adjust engine parameters;

[0088] During plateau calibration, when the compressor surge margin is lower than a preset second lower limit value of the compressor surge margin, or the compressor impeller plateau margin is lower than the preset second lower limit value of the compressor impeller plateau margin, the electronic control unit outputs a second warning message for prompting an engine parameter adjustment;

[0089] When the compressor surge margin and the compressor impeller plateau margin both meet preset lower limit requirements and when the total efficiency of the supercharger is lower than a preset efficiency threshold, the electronic control unit outputs a third warning message for prompting an engine parameter adjustment.

[0090] It should be noted that by issuing alarms for the supercharger compressor surge margin, compressor impeller plateau margin, and supercharger overall efficiency, engine calibration personnel can be prompted to adjust engine parameters in a timely manner to prevent insufficient supercharger surge margin or surge, insufficient compressor impeller plateau margin or overspeed, and low supercharger overall efficiency.

[0091] It is understandable that the icon-based display is easier to observe, that is, more intuitive, than simple comparison of data.

[0092] Based on this, in another embodiment of the present invention, the supercharger characteristic diagram is constructed according to the characteristic test data of the supercharger, and after the supercharger characteristic diagram is constructed, the test parameters can be marked on the supercharger characteristic diagram.

[0093] It should be noted that by marking the test parameters on the characteristic diagram constructed from the supercharger's characteristic test data, the gap between theoretical data and actual test data can be intuitively seen, which makes it easier for engineers to calibrate the matching of the engine and supercharger, further reducing the engineers' workload and improving work efficiency.

[0094] When the turbocharger and engine matching method of the present invention is used to develop the matching between the turbocharger and the engine, the overall workflow is as follows: Figure 2 Shown are:

[0095] 201. Writing the functional relationship of the supercharger-related technical parameters described in the above embodiment into the engine electronic control unit;

[0096] 202. Writing the turbocharger compressor surge margin, turbocharger plateau margin threshold, and turbocharger compressor and turbine characteristic test data into the engine electronic control unit, and editing the compressor and turbine characteristic test data to generate compressor and turbine characteristic maps;

[0097] 203. Read the relevant test data required in the supercharger technical parameter function relationship in the engine electronic control unit;

[0098] 204. The electronic control unit calculates the supercharger technical parameters such as the pressure ratio, expansion ratio, compressor surge margin, plateau margin, etc. based on the test data and functional relationship;

[0099] 205. The electronic control unit reads the supercharger technical parameters such as the pressure ratio, expansion ratio, compressor surge margin, plateau margin, etc. from the supercharger compressor and turbine characteristic diagram based on the calculated supercharger technical parameters such as the pressure ratio, expansion ratio, etc., and displays them in real time on the characteristic diagram;

[0100] 206. When the surge margin or plateau margin is lower than the set lower limit, the turbocharger compressor surge margin and the compressor impeller plateau margin will be alarmed to prompt the engine calibration personnel to adjust the engine parameters in time to prevent the turbocharger surge margin from being insufficient or surging, and the compressor impeller plateau margin from being insufficient or overspeeding.

[0101] The method facilitates engineers to match and calibrate the engine and supercharger based on the characteristic diagram and actual technical parameters obtained during the matching calibration process, facilitates engine developers to calibrate and optimize the matching of the supercharger and the engine, reduces the workload of engine developers, and improves work efficiency and development success rate. At the same time, it prevents the failure of supercharger plateau calibration due to insufficient supercharger surge margin and plateau margin, which wastes a lot of time and test resources. After matching calibration, the probability of supercharger failure in plateau is reduced, and the reliability and plateau capability of the engine are improved.

[0102] It should also be noted that the method described in the present invention is not only applicable to turbochargers, but also to other types of superchargers and impeller machines, such as electric superchargers, hydrogen fuel compressors, gas turbines, etc., which will not be elaborated here.

[0103] A matching system of a turbocharger and an engine provided by the present invention is described below. The matching system of a turbocharger and an engine described below and the matching method of a turbocharger and an engine described above can refer to each other.

[0104] like Figure 3 As shown, the present invention provides a turbocharger and engine matching system, including: a writing module 310, a reading and calculating module 320 and a comparing module 330; wherein,

[0105] The writing module 310 is used to write the functional relationship of the supercharger related technical parameters and the characteristic test data of the supercharger compressor and turbine into the electronic control unit of the engine;

[0106] The reading and calculating module 320 is used by the electronic control unit to read the test data of the supercharger related to the functional relationship, and obtain the test parameters of the supercharger through the test data and the functional relationship;

[0107] The comparison module 330 is configured to enable the electronic control unit to output a comparison result between the test parameters used for matching calibration between the supercharger and the engine and the characteristic test data.

[0108] It should be noted that the present invention provides a turbocharger and engine matching system, which presets a functional relationship between the supercharger's relevant technical parameters and the characteristic test data of the supercharger provided by the supercharger manufacturer in the engine's electronic control unit; based on the test data of the supercharger related to the functional relationship read by the electronic control unit, the test parameters of the supercharger can be obtained through the test data and the functional relationship; finally, the electronic control unit outputs a comparison result between the test parameters and the characteristic test data for matching calibration of the supercharger and the engine, which enables engineers to match and calibrate the supercharger and the engine based on the comparison result, facilitates engine developers to calibrate and optimize the matching of the supercharger and the engine, reduces the workload of engine developers, and improves work efficiency.

[0109] The turbocharger and engine matching system of the present invention is used in the turbocharger and engine matching methods of the aforementioned embodiments. Therefore, the descriptions and definitions of the turbocharger and engine matching methods in the aforementioned embodiments can be used to understand the various execution modules in the embodiments of the present invention.

[0110] Figure 4 An example of a physical structure diagram of an electronic device is shown below. Figure 4As shown, the electronic device may include: a processor 410, a communication interface 420, a memory 430, and a communication bus 440, wherein the processor 410, the communication interface 420, and the memory 430 communicate with each other via the communication bus 440. The processor 410 may call the logic instructions in the memory 430 to execute a method for matching a turbocharger with an engine, comprising: writing a functional relationship of technical parameters related to the turbocharger and characteristic test data of the turbocharger compressor and turbine into the electronic control unit of the engine; the electronic control unit reading the test data of the turbocharger related to the functional relationship and obtaining the test parameters of the turbocharger based on the test data and the functional relationship; and the electronic control unit outputting a comparison result between the test parameters and the characteristic test data for matching and calibrating the turbocharger with the engine.

[0111] In addition, the logic instructions in the above-mentioned memory 430 can be implemented in the form of a software functional unit and can be stored in a computer-readable storage medium when sold or used as an independent product. Based on this understanding, the technical solution of the present invention, or the part that contributes to the prior art, or the part of the technical solution, can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes several instructions for enabling a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present invention. The aforementioned storage medium includes: various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.

[0112] On the other hand, the present invention also provides a computer program product, which includes a computer program stored on a non-transitory computer-readable storage medium, and the computer program includes program instructions. When the program instructions are executed by a computer, the computer can execute a method for matching a turbocharger with an engine provided by the above methods, including: writing a functional relationship of technical parameters related to the supercharger and characteristic test data of the supercharger compressor and turbine into an electronic control unit of the engine; the electronic control unit reads test data of the supercharger related to the functional relationship, and obtains test parameters of the supercharger through the test data and the functional relationship; and the electronic control unit outputs a comparison result of the test parameters used for matching calibration of the supercharger and the engine with the characteristic test data.

[0113] On the other hand, the present invention also provides a non-transitory computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements a method for matching a turbocharger with an engine, comprising: writing a functional relationship of technical parameters related to the turbocharger and characteristic test data of the turbocharger compressor and turbine into an electronic control unit of the engine; the electronic control unit reads test data of the turbocharger related to the functional relationship, and obtains test parameters of the turbocharger through the test data and the functional relationship; and the electronic control unit outputs a comparison result of the test parameters used for matching calibration of the turbocharger and the engine with the characteristic test data.

[0114] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, i.e., they may be located in one location or distributed across multiple network units. Some or all of the modules may be selected based on actual needs to achieve the objectives of the present embodiment. Persons of ordinary skill in the art will be able to understand and implement the present invention without inventive effort.

[0115] Through the description of the above embodiments, those skilled in the art can clearly understand that each embodiment can be implemented by means of software plus a necessary general hardware platform, or of course, by hardware. Based on this understanding, the essence of the above technical solution or the part that contributes to the existing technology can be embodied in the form of a software product. The computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, a magnetic disk, an optical disk, etc., and includes a number of instructions for enabling a computer device (which can be a personal computer, a server, or a network device, etc.) to execute the methods described in each embodiment or certain parts of the embodiments.

[0116] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A method for matching a turbocharger with an engine, characterized in that: include: Writing functional relationships of relevant technical parameters of the supercharger and characteristic test data of the compressor and turbine of the supercharger into the electronic control unit of the engine; The electronic control unit reads test data of the supercharger related to the functional relationship, and obtains test parameters of the supercharger according to the test data and the functional relationship; The electronic control unit outputs a comparison result between the test parameters used for matching calibration between the supercharger and the engine and the characteristic test data; The comparison result between the test parameters output by the electronic control unit for matching calibration between the supercharger and the engine and the characteristic test data specifically includes: During plain calibration, when the compressor surge margin is lower than a preset first lower limit value of the compressor surge margin, or the compressor impeller plateau margin is lower than a preset first lower limit value of the compressor impeller plateau margin, the electronic control unit outputs a first warning message for prompting an engine parameter adjustment; During plateau calibration, when the compressor surge margin is lower than a preset second lower limit value of the compressor surge margin, or the compressor impeller plateau margin is lower than the preset second lower limit value of the compressor impeller plateau margin, the electronic control unit outputs a second warning message for prompting an engine parameter adjustment; When both the compressor surge margin and the compressor impeller plateau margin meet the preset lower limit requirements, when the total efficiency of the supercharger is lower than the preset efficiency threshold, the electronic control unit outputs a third warning information for reminding to adjust the engine parameters; the preset first lower limit value of the compressor surge margin is greater than the preset second lower limit value; the preset first lower limit value of the compressor impeller plateau margin is greater than the preset second lower limit value; wherein, the preset first lower limit value of the compressor surge margin represents the lower limit of the supercharger surge margin; the preset second lower limit value of the compressor surge margin represents the lower limit of the supercharger surge; the preset first lower limit value of the compressor impeller plateau margin represents the lower limit of the supercharger compressor impeller plateau margin; the preset second lower limit value of the compressor impeller plateau margin represents the upper limit of the supercharger compressor impeller speed.

2. The method for matching a turbocharger and an engine according to claim 1, characterized in that: The relevant technical parameters of the supercharger specifically include multiple or all of the following: The total efficiency of the supercharger, and the relevant technical parameters of the compressor of the supercharger: compression ratio, compressor adiabatic efficiency, compressor reduced flow rate, and compressor reduced speed; The relevant technical parameters of the turbine of the supercharger are: turbine expansion ratio, turbine similar flow, turbine similar speed, and turbine effective efficiency.

3. The method for matching a turbocharger with an engine according to claim 2, wherein: After writing the functional relationship of the supercharger-related technical parameters and the characteristic test data of the supercharger compressor and turbine into the electronic control unit of the engine, the method further includes: The preset lower limit value of the compressor surge margin and the preset lower limit value of the compressor impeller plateau margin are written into the electronic control unit.

4. The method for matching a turbocharger with an engine according to claim 3, characterized in that: Writing the preset lower limit value of the compressor surge margin and the preset lower limit value of the compressor impeller plateau margin into the electronic control unit specifically includes: The preset first lower limit value and the preset second lower limit value of the compressor surge margin; and the preset first lower limit value and the preset second lower limit value of the compressor impeller plateau margin are written into the electronic control unit respectively.

5. The method for matching a turbocharger with an engine according to claim 4, characterized in that: The electronic control unit reads test data of the supercharger related to the functional relationship, and obtains test parameters of the supercharger according to the test data and the functional relationship, specifically including: The electronic control unit reads the compressor operating intake similar flow rate of the supercharger and the actual operating speed of the compressor impeller; Obtaining the compressor surge margin according to the surge flow of the compressor corresponding to the characteristic test data of the compressor and the turbine at a similar intake flow rate of the compressor and a same pressure ratio; The compressor impeller plateau margin is obtained according to the actual operating speed of the compressor impeller and the corresponding maximum allowable operating speed of the compressor impeller in the characteristic test data of the compressor and the turbine.

6. The method for matching a turbocharger with an engine according to claim 1, characterized in that: After writing the characteristic test data of the supercharger into the electronic control unit of the engine, the method further includes: constructing the supercharger characteristic map according to the characteristic test data of the supercharger; After obtaining the test parameters of the supercharger through the test data and the functional relationship, the method further includes: The test parameters are marked on the supercharger characteristic diagram.

7. A turbocharger and engine matching system, characterized in that: include: A writing module, used to write the functional relationship of the supercharger-related technical parameters and the characteristic test data of the supercharger compressor and turbine into the electronic control unit of the engine; a reading and calculating module, configured for the electronic control unit to read test data of the supercharger related to the functional relationship, and obtain test parameters of the supercharger through the test data and the functional relationship; A comparison module, for outputting by the electronic control unit a comparison result of the test parameters for matching calibration of the supercharger and the engine with the characteristic test data; the comparison result of the test parameters for matching calibration of the supercharger and the engine with the characteristic test data output by the electronic control unit specifically includes: in plain calibration, when the compressor surge margin is lower than the preset first lower limit value of the compressor surge margin, or the compressor impeller plateau margin is lower than the preset first lower limit value of the compressor impeller plateau margin, the electronic control unit outputs a first warning message for prompting to adjust the engine parameters; in plateau calibration, when the compressor surge margin is lower than the preset second lower limit value of the compressor surge margin, or the compressor impeller plateau margin is lower than the preset second lower limit value of the compressor impeller plateau margin, the electronic control unit outputs a warning message for prompting to adjust the engine parameters. a second warning message for reminding to adjust the engine parameters; when the compressor surge margin and the compressor impeller plateau margin both meet the preset lower limit requirements, and when the total efficiency of the supercharger is lower than the preset efficiency threshold, the electronic control unit outputs a third warning message for reminding to adjust the engine parameters; the preset first lower limit value of the compressor surge margin is greater than the preset second lower limit value; the preset first lower limit value of the compressor impeller plateau margin is greater than the preset second lower limit value; wherein, the preset first lower limit value of the compressor surge margin represents the lower limit of the supercharger surge margin; the preset second lower limit value of the compressor surge margin represents the lower limit of the supercharger surge; the preset first lower limit value of the compressor impeller plateau margin represents the lower limit of the supercharger compressor impeller plateau margin; the preset second lower limit value of the compressor impeller plateau margin represents the upper limit of the supercharger compressor impeller speed.

8. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein: When the processor executes the program, the steps of the method for matching a turbocharger with an engine according to any one of claims 1 to 6 are implemented.

9. A computer storage medium, characterized in that A computer program is stored thereon, and when the computer program is executed, the steps of the method for matching a turbocharger with an engine as claimed in any one of claims 1 to 6 are implemented.

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