Engine intake system control method, device and storage medium

Abstract

The present disclosure provides an engine intake system control method, device, computer program product, non-transitory computer-readable storage medium and electronic device. The method comprises: obtaining the air mass consumed by the cylinder; determining the air molar mass consumed by the cylinder according to the air mass consumed by the cylinder, the mass ratio of oxygen to air and the molecular weight of oxygen; and controlling the intake system of the engine based on the air molar mass consumed by the cylinder. The embodiments of the present disclosure are beneficial to realize accurate control of engine intake.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of engine electronic control, and more particularly to an engine intake system control method, device, computer program product, non-transitory computer readable storage medium, electronic device and engine electronic control unit. BACKGROUND

[0002] This section is intended to introduce the reader to some aspects of art that can be related to various aspects of the present disclosure that are described and / or claimed below. This section is believed to be helpful in providing the context of art to facilitate a better understanding of various aspects of the present disclosure. Accordingly, it should be understood that these statements are to be read in this light, and not as admissions of prior art.

[0003] Exhaust gas recirculation (EGR) refers to air entering the engine after combustion, through the exhaust gas recirculation valve, back into the engine combustion chamber again, mixed with fresh air again, and then continue to enter the engine for combustion. The purpose is to reduce the nitrogen oxides discharged from the engine tailpipe to meet the increasingly stringent nitrogen oxides emission requirements.

[0004] The power output of the engine is different under different working conditions, and the amount of nitrogen oxides produced is also different, so it is necessary to adjust the proportion of exhaust gas recirculation to adapt to different working states of the engine. In the prior art, the pressure and temperature at each point in the engine circuit are calculated based on the mass flow of gas, and the exhaust gas recirculation rate is controlled accordingly. The above method has the problem of low control accuracy of the exhaust gas recirculation rate.

[0005] Therefore, it is necessary to propose a new technical scheme to alleviate or solve the above at least one technical problem. SUMMARY

[0006] The purpose of the present disclosure is to provide an engine intake system control method, device, computer program product, non-transitory computer readable storage medium and electronic device to prevent the temperature upstream of the diesel particulate filter from being too high.

[0007] According to a first aspect of the present disclosure, an engine intake system control method is provided, comprising: obtaining the mass of air consumed by a cylinder; determining the molar amount of air consumed by the cylinder according to the mass of air consumed by the cylinder, the mass ratio of oxygen to air and the molecular weight of oxygen; and controlling the intake system of the engine based on the molar amount of air consumed by the cylinder.

[0008] According to a second aspect of the present disclosure, an engine intake system control device is provided, comprising: an air mass acquisition module configured to acquire air mass consumed by a cylinder; an air molar amount determination module configured to determine air molar amount consumed by the cylinder based on the air mass consumed by the cylinder, a mass ratio of oxygen to air, and a molecular weight of oxygen; and a first control module configured to control an intake system of an engine based on the air molar amount consumed by the cylinder.

[0009] According to a third aspect of the present disclosure, a computer program product is provided, comprising program code instructions to cause a computer to perform the method according to the first aspect of the present disclosure when the program product is executed by the computer.

[0010] According to a fourth aspect of the present disclosure, a non-transitory computer-readable storage medium storing computer instructions is provided, wherein the computer instructions are configured to cause a computer to perform the method according to the first aspect of the present disclosure.

[0011] According to a fifth aspect of the present disclosure, an electronic device is provided, comprising: a processor, a memory in electronic communication with the processor; and instructions stored in the memory and executable by the processor to cause the electronic device to perform the method according to the first aspect of the present disclosure.

[0012] According to a sixth aspect of the present disclosure, an engine electronic control unit is provided, comprising the device according to the second aspect of the present disclosure.

[0013] In the embodiments of the present disclosure, the intake system of the engine is controlled based on the air molar amount consumed by the cylinder, which can accurately determine the air composition and is beneficial to realize accurate control of the engine intake, relative to the intake control based on the mass of the gas.

[0014] It should be understood that the content described in this part is not intended to identify key or essential features of the claimed invention, nor is it intended to be used alone to determine the scope of the claimed invention. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure or the prior art, a brief introduction to the drawings needed to be used in the embodiments or prior art description will be given below. Obviously, the drawings in the following description are only some embodiments of the present disclosure, and those skilled in the art can also obtain other drawings according to these drawings without creative labor. In all the drawings, the same reference signs refer to similar but not necessarily identical elements.

[0016] Figure 1A schematic diagram showing an exemplary architecture of an engine intake system control method according to the present disclosure is shown;

[0017] Figure 2 A flowchart showing one embodiment of an engine intake system control method according to the present disclosure is shown;

[0018] Figure 3A A schematic diagram showing a calculation process of pre-vortex temperature of an engine intake system control method according to the present disclosure is shown;

[0019] Figure 3B A schematic diagram showing an EGR molar flow calculation process of an engine intake system control method according to the present disclosure is shown;

[0020] Figure 3C A schematic diagram showing an intake gas molar flow calculation process of an engine intake system control method according to the present disclosure is shown;

[0021] Figure 3D A schematic diagram showing a total gas molar flow calculation process of an engine intake system control method according to the present disclosure is shown;

[0022] Figure 3E A schematic diagram showing an EGR rate calculation process of an engine intake system control method according to the present disclosure is shown;

[0023] Figure 3F A schematic diagram showing a required intake air amount calculation process of an engine intake system control method according to the present disclosure is shown;

[0024] Figure 3G A schematic diagram showing an intake air amount control process of an engine intake system control method according to the present disclosure is shown;

[0025] Figure 4 An exemplary block diagram showing one embodiment of an engine intake system control apparatus according to the present disclosure is shown;

[0026] Figure 5 A schematic diagram showing an exemplary electronic device 500 that can be used to implement embodiments of the present disclosure is shown.

[0027] DETAILED DESCRIPTION

[0028] The present disclosure will be described more fully hereinafter with reference to the accompanying drawings. This disclosure may, however, be embodied in many alternate forms and should not be construed as limited to the embodiments set forth herein. Accordingly, while the disclosure is susceptible to various modifications and alternative forms, specific embodiments thereof are shown by way of example in the drawings and will be described herein in detail. It should be understood that such teachings are not to be limited to specific embodiments, but encompassed in the spirit and scope of the disclosure as defined by the claims.

[0029] It will be understood that, although the terms first, second, etc. can be used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another. For example, a first element could be termed a second element, and, similarly, a second element could be termed a first element, without departing from the teachings of the present disclosure.

[0030] Some examples are described herein with reference to block and / or flow diagrams in which each block represents circuits, modules or portions of code which include one or more executable instructions for implementing the specified logical functions. It should also be noted that in other implementations, the functions shown in the blocks can not occur in the order shown. For example, according to the functions involved, two blocks shown in succession can in fact be executed substantially concurrently or at other times, and sometimes the blocks can be executed in reverse order.

[0031] Reference herein to "embodiment according to" or "in an embodiment" means that a particular feature, structure or characteristic described in connection with an embodiment can be included in at least one implementation of the present disclosure. The phrases "according to" or "in an embodiment" appearing in various places in this document are not necessarily all referring to the same embodiment, nor are they necessarily mutually exclusive of other embodiments.

[0032] The following explains the terms related to the present disclosure:

[0033] EGR: Exhaust Gas Recirculation, exhaust gas recirculation;

[0034] NOx: Nitrogen oxides, nitrogen oxides;

[0035] BPS: Boost Pressure Sensor, intake pressure sensor (with temperature).

[0036] Figure 1 A schematic diagram showing an exemplary architecture of an engine intake system control method according to the present disclosure is shown. As Figure 1As shown, fresh air is sucked in and enters the cylinder through the throttle. In addition, a portion of the exhaust gas discharged from the cylinder reenters the cylinder through the EGR. Thus, the gas entering the cylinder can be divided into two parts, one from the throttle and the other from the EGR. By controlling the size and proportion of the flow of the above two parts of gas, the intake control of the engine can be achieved. Figure 1 In this embodiment, the turbine is shown as two parts, which are actually the same component.

[0037] In this disclosure, the intake control of the engine can include the control of the throttle and the control of the EGR. For example, the following factors can be considered for the intake control of the engine: in the starting and idling conditions, due to the low speed, the highest combustion temperature is low, the NOx emission is low, in order to ensure the smooth starting and stable operation of the engine, the EGR needs to be closed; at low speed and low load, the increase of the EGR rate will cause a significant decrease in power and the NOx emission is low at this time, a smaller EGR rate or the EGR needs to be closed at this time; at low speed and medium-high load, the NOx emission is large, the use of a larger EGR rate has little effect on the engine power, HC and CO emission, a larger EGR rate should be used at this time; at medium-high speed and small load, a larger EGR rate should be used to reduce the NOx emission; at medium-high speed and large load, in order to ensure that the engine has enough power output, a smaller EGR rate or the EGR needs to be closed at this time.

[0038] Figure 2 A flow chart of one embodiment of the method for controlling the intake system of the engine according to the disclosure is shown. The method in this embodiment can be implemented by Figure 5 the electronic device 500 shown.

[0039] As Figure 2 shown, the method 200 includes the following steps:

[0040] Step 210, obtaining the mass of air consumed by the cylinder.

[0041] In this embodiment, the mass of air consumed by the cylinder can be obtained by monitoring the sensor data.

[0042] Step 220, determining the molar amount of air consumed by the cylinder according to the mass of air consumed by the cylinder, the mass ratio of oxygen to air and the molecular weight of oxygen.

[0043] In this embodiment, the mass ratio of oxygen to air and the molecular weight of oxygen can be obtained in advance.

[0044] Step 230, controlling the intake system of the engine based on the molar amount of air consumed by the cylinder.

[0045] In an optional embodiment, the step 230 can further include the following steps: a step 231 of determining the oxygen molar quantity consumed by the cylinder based on the air molar quantity consumed by the cylinder; a step 232 of determining the turbine inlet exhaust temperature of the engine according to the fuel quantity consumed by the cylinder and the oxygen molar quantity consumed by the cylinder; and a step 233 of controlling the intake system of the engine based on the turbine inlet exhaust temperature of the engine. In this embodiment, the turbine inlet exhaust temperature can refer to the turbine inlet exhaust temperature of the engine.

[0046] In an optional embodiment, the step 233 can further include the following steps: a step 233a of determining the molar flow of the exhaust gas recirculation according to the turbine inlet and outlet temperature difference of the engine, the turbine outlet temperature, the turbine inlet pressure and the turbine inlet exhaust temperature of the engine; a step 233b of determining the exhaust gas recirculation rate according to the molar flow of the exhaust gas recirculation and the molar flow of the total gas entering the cylinder; and a step 233c of controlling the intake system of the engine based on the exhaust gas recirculation rate.

[0047] In an optional embodiment, the step 233c can be implemented in the following manner: feedback control of the opening of the exhaust gas recirculation according to the required exhaust gas recirculation rate and the actual exhaust gas recirculation rate.

[0048] In the prior art, the pressure and temperature at each point in the engine circuit are usually calculated based on the mass flow of the gas, and the exhaust gas recirculation rate is controlled accordingly. The above method has the problem of insufficient control accuracy of the exhaust gas recirculation rate. In the above embodiment, the intake system of the engine is controlled based on the air molar quantity consumed by the cylinder, which can accurately determine the air composition and is beneficial to the accurate control of the engine intake, compared with the intake control based on the mass of the gas.

[0049] In an optional embodiment, the method 200 can further include the following steps: determining the intake demand of the throttle according to the set intake quantity and the actual intake quantity; determining the required throttle flow area according to the intake demand of the throttle, the upstream pressure of the throttle, the intake temperature and the measurement of the intake pressure sensor; and controlling the intake system of the engine according to the required throttle flow area. The set intake quantity is related to the working condition. The intake quantity of different working conditions can be set by observing the gas emission, turbine inlet exhaust temperature and other parameters of the engine bench and through calibration.

[0050] In an optional embodiment, the step of controlling the intake system of the engine according to the required throttle flow area can further include the following step: feedback control of the opening of the throttle according to the required throttle flow area and the actual throttle flow area.

[0051] In the existing mode, the throttle is usually controlled based on the pressure of BPS only, and the dynamic response speed of the mode is slow. In the above embodiment, the required throttle flow area is calculated according to the intake demand, the upstream pressure of the throttle, the intake temperature and the measurement value of the intake pressure sensor, and the throttle opening is controlled based on the above, so that higher dynamic response speed can be obtained, and the robustness of emission can be considered.

[0052] Figure 3A A schematic diagram of the calculation process of the pre-turbine exhaust temperature of the engine intake system control method according to the present disclosure is shown. As shown in Figure 3A , the pre-turbine exhaust temperature can be calculated in the following way: the molar amount of oxygen converted from the theoretical consumed fresh intake amount is calculated according to the amount of fuel ASMod_qFIInjCmb participating in combustion, and the heat capacity of the gas after combustion is calculated by Figure 3A formula, and the remaining heat is calculated according to the fuel amount ASMod_qFIInjCmb, the combustion heat value of diesel, and the heat required for engine work ASMod_wTechnicalWrk by Figure 3A formula, and the temperature difference ASMod_tDiffEGMean is obtained by dividing the remaining heat by the heat capacity, and the pre-turbine exhaust temperature is calculated according to the in-cylinder temperature and the intake temperature by Figure 3A formula.

[0053] Figure 3B A schematic diagram of the EGR molar flow calculation process of the engine intake system control method according to the present disclosure is shown. As shown in Figure 3B , the EGR molar flow can be calculated in the following way: the molar flow of the EGR model ASMod_dmolEGRDsMod is obtained according to the EGR nozzle model (Klau-ron equation principle) according to the supercharger upstream pressure ASMod_pTrbUs, the EGR upstream pressure ASMod_pEGRUs, the pre-turbine exhaust temperature ASMod_tExhMnfDs, and the intake boost pressure ADSIG_BPS_pOutVal; and then the measured EGR molar amount ASMod_dmolEGRDsMes is obtained by Figure 3B formula according to the total intake amount ASMod_dmolIntMnfDsMes of the suction cylinder calculated by the intake temperature pressure sensor and the fresh intake amount ASMod_dmolTV converted by the air flow meter, and the final EGR molar amount ASMod_dmolEGRDs is obtained by weighting the strategic EGR molar amount and the model EGR molar amount.

[0054] Figure 3C A schematic diagram of the intake gas molar flow calculation process of the engine intake system control method according to the present disclosure is shown. As shown in Figure 3CAs shown, the intake gas molar flow can be calculated as follows: according to the temperature upstream of the throttle ASMod_tAirIntakeAbs, the upstream pressure of the throttle ASMod_TVUsP_pVal, and the volume of the intake pipeline, the mass flow of the intake pipeline loss ASMod_dmIndVol is obtained, the air flow meter FSIG_AFS_dmAirSens is subtracted by the intake amount of the intake pipeline loss, the intake mass flow through the throttle is obtained, and according to the intake mass flow, the molar mass of the intake is converted to obtain the gas molar flow of the intake.

[0055] Figure 3D A schematic diagram of the total gas molar flow calculation process of the suction cylinder of the engine intake system control method according to the present disclosure is shown. As shown in the figure, Figure 3D As shown, the total gas molar flow of the suction cylinder can be calculated as follows: according to the temperature before the turbine ASMod_tExhMnfDs, the cooling water temperature ADSIG_CT_tClnt, the temperature after the EGR mixing point ASMod_tTempIntMnfUs, and the molar flow of the EGR, the temperature after the intake mixing point of T2 is calculated

[0056] ASMod_tAbsTempIntMnfDs, and according to the intake boost pressure ADSIG_BPS_pOutVal and the input parameters of the engine displacement, the total gas molar flow of the suction cylinder is obtained by the Kalibrong equation.

[0057] Figure 3E A schematic diagram of the EGR rate calculation process of the engine intake system control method according to the present disclosure is shown. As shown in the figure, Figure 3E As shown, the EGR rate can be calculated as follows: according to the molar flow of the EGR ASMod_dmolEGRDs divided by the total molar flow of the intake

[0058] ASMod_dmolIntMnfDs, the model EGR rate ASMod_rEGRIntMnfDs is obtained, the required EGR rate is calibrated according to the emission generated by the actual operating condition of the engine and the temperature before the turbine and other parameter information, the required EGR rate is limited by the throttle pressure ratio limit AirCtl_rEGRRatioDesMaxByAirDem and the minimum EGR rate set by the calibrated water temperature, to obtain the final required EGR rate AirCtl_rEGRRatioDesVal, and the required EGR rate and the actual model EGR rate are calculated by PID to control the actual output of the EGR valve.

[0059] Figure 3F A schematic diagram of the required intake amount calculation process of the engine intake system control method according to the present disclosure is shown. As shown in the figure,Figure 3F As shown, the required intake air volume can be calculated as follows: Based on the actual emissions and turbine inlet temperature under various operating conditions of the engine test bench, the required fresh intake air volume AirCtl_mDesValUnLim is set. Then, the minimum intake air volume is limited by the calibrated air-fuel ratio EngTrq_SmkLim_rLmbdDes. Finally, the intake air volume setting AirCtl_dmAirDem is obtained by setting the pressure ratio ASMod_TVUsP_rPRatio2AirEstm to prevent turbocharger surge.

[0060] Figure 3G A schematic diagram of the intake air volume control process according to the engine intake system control method of this disclosure is shown. Figure 3G As shown, intake air volume control can be performed as follows: Based on the set fresh intake air volume AirCtl_dmAirDem, boost pressure ADSIG_BPS_pOutVal, upstream intake temperature ASMod_tTempIntMnfUs, and upstream throttle pressure ASMod_TVUsP_pVal, the required flow area AirCtl_arTVAirDemRaw is calculated using the throttle nozzle inverse model (Clapeyron equation principle). Based on the required throttle molar flow rate AirCtl_dmolAirDem and the required throttle flow area, the required throttle opening is obtained by referring to the calibrated table MAP_ASMod_arTVAOpenEff.

[0061] Figure 4 An exemplary block diagram of an engine intake system control device according to an embodiment of the present disclosure is shown. Figure 4 As shown, the device 400 includes: an air mass acquisition module 410 for acquiring the air mass consumed by the cylinder; an air molar quantity determination module 420 for determining the air molar quantity consumed by the cylinder based on the air mass consumed by the cylinder, the mass ratio of oxygen to air, and the molecular weight of oxygen; and a first control module 430 for controlling the engine's intake system based on the air molar quantity consumed by the cylinder.

[0062] It should be understood that Figure 4 The various modules of the device 400 shown can be connected to the reference. Figure 2 The steps in method 200 described correspond to each other. Therefore, the operations, features, and advantages described above for method 200 also apply to apparatus 400 and its included modules. For the sake of brevity, some operations, features, and advantages will not be repeated here.

[0063] In an optional embodiment, the first control module 430 is further configured to determine the oxygen molar quantity consumed by the cylinder based on the air molar quantity consumed by the cylinder, determine the turbine front exhaust temperature of the engine according to the fuel quantity consumed by the cylinder and the oxygen molar quantity consumed by the cylinder, and control the intake system of the engine based on the turbine front exhaust temperature of the engine.

[0064] In an optional embodiment, the first control module 430 is further configured to determine the EGR molar flow according to the turbine front and rear temperature difference, the turbine rear temperature, the turbine front pressure and the turbine front exhaust temperature of the engine, determine the EGR rate according to the EGR molar flow and the molar flow of all gases entering the cylinder, and control the intake system of the engine based on the EGR rate.

[0065] In an optional embodiment, the first control module 430 is further configured to perform feedback control on the EGR opening according to the required EGR rate and the actual EGR rate.

[0066] In an optional embodiment, the device 400 further comprises an intake demand quantity determination unit configured to determine the intake demand quantity of the throttle valve according to the set intake quantity and the actual intake quantity, a throttle valve flow area determination unit configured to determine the required throttle valve flow area according to the intake demand quantity of the throttle valve, the upstream pressure of the throttle valve, the intake temperature and the measurement of the intake pressure sensor, and a second control unit configured to control the intake system of the engine according to the required throttle valve flow area.

[0067] In an optional embodiment, the second control unit is further configured to perform feedback control on the throttle valve opening according to the required throttle valve flow area and the actual throttle valve flow area.

[0068] Embodiments of the present disclosure also provide an engine electronic control unit comprising the device 400 described above.

[0069] Figure 5 A schematic block diagram of an example electronic device 500 that can be used to implement embodiments of the present disclosure is shown. Referring to FIG. 5, the electronic device 500 includes a processor 510, a memory 520, a storage 530, an input device 540, a display 550, and a communication interface 560. Figure 5An example of a hardware device that can be employed in aspects of the present disclosure will now be described with reference to FIG. 5, which is a structural block diagram of an electronic device 500 that can serve as a server or a client of the present disclosure. The electronic device is intended to represent various forms of digital computers, such as laptops, desktops, tablets, personal digital assistants, servers, blade servers, mainframes, and other appropriate computers. The electronic device can also represent various forms of mobile devices, such as personal digital assistants, cellular telephones, smartphones, wearable devices, and other similar computing devices. The components shown in FIG. 5, their connections and relationships, and their functions, are meant to be examples only, and are not meant to limit implementations of the present disclosure described and / or claimed in this document. As those skilled in the relevant art will readily appreciate, computers are generally capable of implementing various aspects of the present disclosure, depending on their Figure 5 As shown, the electronic device 500 includes a computing unit 501 that can perform various appropriate actions and processes in accordance with a computer program stored in a read-only memory (ROM) 502 or a computer program loaded from a storage unit 508 into a random access memory (RAM) 503. Various programs and data required for the operation of the device 500 can also be stored in the RAM 503. The computing unit 501, the ROM 502, and the RAM 503 are connected to each other through a bus 504. An input / output (I / O) interface 505 is also connected to the bus 504. Various components in the device 500 are connected to the I / O interface 505, including an input unit 506, such as a keyboard, a mouse, etc.; an output unit 507, such as various types of displays, speakers, etc.; the storage unit 508, such as a magnetic disk, an optical disk, etc.; and a communication unit 509, such as a network card, a modem, a wireless communication transceiver, etc. The communication unit 509 allows the device 500 to exchange information / data with other devices through a computer network, such as the Internet, and / or various telecommunication networks.

[0070] The computing unit 501 can be various general and / or special purpose processing components with processing and computing capabilities. Some examples of the computing unit 501 include, but are not limited to, a central processing unit (CPU), a graphics processing unit (GPU), various specialized artificial intelligence (AI) computing chips, various computing units running machine learning model algorithms, a digital signal processor (DSP), and any appropriate processor, controller, microcontroller, etc. The computing unit 501 performs various methods and processes described above, such as the engine intake system control method. For example, in some embodiments, the engine intake system control method can be implemented as a computer software program tangibly embodied in a machine-readable medium, such as the storage unit 508. In some embodiments, part or all of the computer program can be loaded and / or installed onto the apparatus 500 via the ROM 502 and / or the communication unit 509. When the computer program is loaded onto the RAM 503 and executed by the computing unit 501, one or more steps of the engine intake system control method described above can be performed. Alternatively, in other embodiments, the computing unit 501 can be configured to perform the engine intake system control method by any other appropriate means, such as by means of firmware.

[0071] The various illustrative logics, logical blocks, modules, circuits and algorithm processes described in connection with the aspects disclosed herein can be implemented as electronic hardware, computer software, or combinations of both. The interchangeability of hardware and software has been described generally, in terms of functionality, and illustrated in the various illustrative components, blocks, modules, circuits and processes described above. Whether such functionality is implemented in hardware or software depends on the particular application and design constraints imposed on the overall system.

[0072] The hardware and data processing apparatus used to implement the various illustrative logics, logical blocks, modules and circuits described in connection with the aspects disclosed herein can be implemented or performed with a general purpose single- or multi-chip processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof designed to perform the functions described herein. A general purpose processor can be a microprocessor, or any conventional processor, controller, microcontroller, or state machine. A processor can also be implemented as a combination of computing devices, such as a combination of a DSP and a microprocessor, a plurality of microprocessors, one or more microprocessors in conjunction with a DSP core, or any other such configuration. In some aspects, particular processes and methods can be performed by an electrical circuit.

[0073] In one or more aspects, the functions described can be implemented in hardware, digital electronic circuitry, computer software, firmware, including the structures disclosed in this specification and their structural equivalents, or in any combination thereof. Aspects of the subject matter described in this specification also can be implemented as one or more computer programs, i.e., one or more modules of computer program instructions, encoded on a computer storage medium for execution by, or to control the operation of, data processing apparatus.

[0074] If implemented in software, the functions can be stored on or transmitted over as one or more instructions or code on a computer-readable medium. The processes of a method disclosed herein can be implemented as software modules, which include instructions that are executed by a processor. Computer-readable media include both computer storage media and communication media including any medium that facilitates transfer of a computer program from one place to another. Storage media can be any available media that can be accessed by a computer. By way of example, and not limitation, such computer-readable media can comprise RAM, ROM, EEPROM, CD-ROM or other optical disk storage, magnetic disk storage or other magnetic storage devices, or any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer. Also, any connection is properly termed a computer-readable medium. Disk and disc, as used herein, includes compact discs (CDs), laser discs, optical discs, digital versatile discs (DVDs), floppy disks and blu-ray discs where disks usually reproduce data magnetically, while discs reproduce data optically with lasers. Combinations of the above should also be included within the scope of computer-readable media. Additionally, the operations of a method or algorithm can reside as one or any combination or set of codes and instructions on a machine readable medium and computer-readable medium, which can be incorporated in a computer program product.

[0075] Various embodiments in the present disclosure are described in a correlative manner, and the same or similar parts among various embodiments can be referred to each other. Each embodiment focuses on the difference from other embodiments. In particular, for the device embodiments, the equipment embodiments, the computer readable storage medium embodiments, and the computer program product embodiments, since they are basically similar to the method embodiments, the description is relatively simple, and the relevant parts can be referred to the part of the method embodiments.

Claims

1. A method for controlling an engine intake system, comprising: Obtain the mass of air consumed by the cylinder; The molar amount of air consumed by the cylinder is determined based on the mass of air consumed by the cylinder, the mass ratio of oxygen to air, and the molecular weight of oxygen. The engine's intake system is controlled based on the amount of air consumed by the cylinder. The control of the engine's intake system based on the molar amount of air consumed by the cylinder includes: Based on the amount of air consumed by the cylinder, determine the amount of oxygen consumed by the cylinder. The engine's turbine exhaust temperature is determined based on the amount of fuel consumed by the cylinder and the amount of oxygen consumed by the cylinder. The engine's intake system is controlled based on the engine's turbine exhaust temperature. The control of the engine's intake system based on the engine's turbine exhaust temperature includes: The molar flow rate of exhaust gas recirculation is determined based on the turbine front-to-back temperature difference, turbine back-end temperature, turbine front pressure, and turbine front exhaust temperature of the engine. The exhaust gas recirculation rate is determined based on the molar flow rate of the exhaust gas recirculation and the molar flow rate of all gas entering the cylinder. The intake system of the engine is controlled based on the exhaust gas recirculation rate.

2. The method according to claim 1, wherein, Based on the exhaust gas recirculation rate, the intake system of the engine is controlled, including: Feedback control is applied to the opening degree of exhaust gas recirculation based on the required exhaust gas recirculation rate and the actual exhaust gas recirculation rate.

3. The method according to claim 1, wherein, The method further includes: Determine the throttle's intake demand based on the set intake volume and the actual intake volume. The required throttle body flow area is determined based on the throttle body's intake air demand, upstream pressure, intake air temperature, and the measurement values ​​of the intake pressure sensor. The intake system of the engine is controlled according to the required throttle valve flow area.

4. The method according to claim 3, wherein, Based on the required throttle valve flow area, the intake system of the engine is controlled, including: Based on the required throttle body flow area and the actual throttle body flow area, the throttle opening is controlled by feedback.

5. An engine intake system control device, comprising: An air quality acquisition module is used to acquire the air quality consumed by the cylinder. An air molar quantity determination module is used to determine the air molar quantity consumed by the cylinder based on the mass of air consumed by the cylinder, the mass ratio of oxygen to air, and the molecular weight of oxygen. The first control module is used to control the engine's intake system based on the amount of air moles consumed by the cylinder. The first control module is also used for: Based on the amount of air consumed by the cylinder, determine the amount of oxygen consumed by the cylinder. The engine's turbine exhaust temperature is determined based on the amount of fuel consumed by the cylinder and the amount of oxygen consumed by the cylinder. The engine's intake system is controlled based on the engine's turbine exhaust temperature. The first control module is also used for: The molar flow rate of exhaust gas recirculation is determined based on the turbine front-to-back temperature difference, turbine back-end temperature, turbine front pressure, and turbine front exhaust temperature of the engine. The exhaust gas recirculation rate is determined based on the molar flow rate of the exhaust gas recirculation and the molar flow rate of all gas entering the cylinder. The intake system of the engine is controlled based on the exhaust gas recirculation rate.

6. The apparatus according to claim 5, wherein, The first control module is also used for: Feedback control is applied to the opening degree of exhaust gas recirculation based on the required exhaust gas recirculation rate and the actual exhaust gas recirculation rate.

7. The apparatus according to claim 5, wherein, The device further includes: The intake demand determination unit is used to determine the intake demand of the throttle valve based on the set intake volume and the actual intake volume. The throttle valve flow area determination unit is used to determine the required throttle valve flow area based on the intake air demand of the throttle valve, the upstream pressure of the throttle valve, the intake air temperature, and the measurement value of the intake air pressure sensor. The second control unit is used to control the intake system of the engine according to the required throttle valve flow area.

8. The apparatus according to claim 7, wherein, The second control unit is also used for: Based on the required throttle body flow area and the actual throttle body flow area, the throttle opening is controlled by feedback.

9. A computer program product comprising program code instructions that, when executed by a computer, cause the computer to perform the method of any one of claims 1-4.

10. A non-transitory computer-readable storage medium storing computer instructions, wherein, The computer instructions are used to cause the computer to perform the method according to any one of claims 1-4.

11. An electronic device, comprising: processor, A memory that communicates electronically with the processor; as well as Instructions, which are stored in the memory and can be executed by the processor, to cause the electronic device to perform the method according to any one of claims 1-4.

12. An engine electronic control unit, comprising the device according to any one of claims 5-8.

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