Control Method, Device, Equipment, and Computer-Readable Storage Medium

Abstract

Embodiments of the present application disclose a control method, device, equipment, and computer-readable storage medium. The method includes: detecting whether the current compression ratio of the engine is the same as the required compression ratio of the target working condition; if not, calculating a compression ratio switching parameter according to the vehicle working condition information, and detecting whether the compression ratio switching parameter meets a preset compression ratio switching condition; if it meets, quickly calculating the target oil parameter and target ignition angle required for the compression ratio switching process according to the compression ratio switching parameter; if the target oil parameter meets the preset oil control condition, controlling the oil output according to the target oil parameter, and performing ignition control according to the target ignition angle to complete the compression ratio switching process, improving the comprehensive fuel economy, power response, and emissions.

Description

Technical Field

[0001] The present application relates to the field of vehicles, and specifically relates to a control method, device, equipment, and computer-readable storage medium. Background Art

[0002] To improve engine efficiency, improve fuel economy, and increase the compression ratio is the most direct and effective method. However, this method also makes the engine knocking tendency stronger and the power output limited. Based on this, the scheme of using a low compression ratio in the high load region and a high compression ratio in the medium and low load regions has been continuously demonstrated. The hydraulically driven two-stage variable compression ratio technology, which is relatively cost-effective and has been studied and applied more, is relatively simple and reliable, taking into account both power performance and fuel economy.

[0003] In the two-stage compression ratio technology scheme, as the load increases, the knocking tendency gradually increases, the combustion phase gradually delays, and the fuel consumption improvement benefit obtained by the high compression ratio compared to the low compression ratio gradually decreases to zero and then becomes negative. The line formed by connecting the load points where the fuel consumption improvement benefit is zero at different engine speeds is the calibrated optimal compression ratio switching line. A low compression ratio is used for loads above the switching line, and a high compression ratio is used below the switching line. There are also sudden changes in the calibrated optimal ignition angles on both sides of the switching line. During the actual working process, the compression ratio switching process requires a certain amount of time, which is related to the compression ratio switching direction and the engine speed. The switching time at medium and low speeds increases significantly, which will cause the engine to sweep through a certain width of the operating condition area during the switching process, that is, the compression ratio switching theoretical line becomes an actual switching transition area. The longer the switching time, the larger the area of the transition area. To ensure operation safety, only a relatively conservative ignition angle can be used in this area, resulting in deteriorated combustion, which limits the improvement of fuel economy, power response, and emission optimization. Summary of the Invention

[0004] To solve the above technical problems, embodiments of the present application respectively provide a control method, device, equipment, and computer-readable storage medium to improve comprehensive fuel economy, power response, and emissions.

[0005] Other features and advantages of the present application will become apparent through the following detailed description, or be learned in part through the practice of the present application.

[0006] According to one aspect of the embodiments of the present application, a control method is provided, including: detecting whether the current compression ratio of the engine is the same as the required compression ratio of the target working condition; if not, calculating a compression ratio switching parameter according to the vehicle working condition information, and detecting whether the compression ratio switching parameter meets a preset compression ratio switching condition; if it meets, calculating a target oil parameter and a target ignition angle required for the compression ratio switching process according to the compression ratio switching parameter; if the target oil parameter meets a preset oil control condition, controlling the oil output according to the target oil parameter, and performing ignition control according to the target ignition angle to complete the compression ratio switching process.

[0007] According to one aspect of the embodiments of the present application, a control device is provided, including: a first detection module configured to detect whether the current compression ratio of the engine is the same as the required compression ratio of the target working condition; a second detection module configured to, if not, calculate a compression ratio switching parameter according to the vehicle working condition information, and detect whether the compression ratio switching parameter meets a preset compression ratio switching condition; a calculation module configured to, if it meets, calculate a target oil parameter and a target ignition angle required for the compression ratio switching process according to the compression ratio switching parameter; a first control module configured to, if the target oil parameter meets a preset oil control condition, control the oil output according to the target oil parameter, and perform ignition control according to the target ignition angle to complete the compression ratio switching process.

[0008] In another exemplary embodiment, the control device further includes: an acquisition module configured to acquire the vehicle working condition information; a required compression ratio calculation module configured to calculate the required compression ratio of the target working condition according to the vehicle working condition information.

[0009] In another exemplary embodiment, the required compression ratio calculation module includes: a calculation unit configured to calculate the target vehicle speed of the target working condition according to the vehicle working condition information; a first determination unit configured to determine the target engine speed and the target torque of the engine according to the target vehicle speed; a second determination unit configured to determine the required compression ratio of the target working condition according to the target engine speed and the target torque.

[0010] In another exemplary embodiment, the first detection module includes: a first detection unit configured to, if it is detected that the current compression ratio of the engine is the same as the required compression ratio of the target working condition, determine a first preset target oil parameter and a first preset target ignition angle according to the current compression ratio of the engine; a first control unit configured to control the oil output according to the first preset target oil parameter, and perform ignition control according to the first preset target ignition angle.

[0011] In another exemplary embodiment, the control device further includes: an engine oil parameter detection module configured to detect whether the target engine oil parameter meets the preset engine oil control condition; a second control module configured to, if the target engine oil parameter does not meet the preset engine oil control condition, control the engine oil output according to a second preset target engine oil parameter and perform ignition control according to a second preset target ignition angle to complete the switching of the required compression ratio.

[0012] In another exemplary embodiment, the control device further includes: a judgment module configured to determine whether the compression ratio switching process is successful according to the current knocking intensity; a failure module configured to, if not successful, determine a third preset target engine oil parameter and a third preset target ignition angle according to the current compression ratio of the engine; a third control module configured to control the engine oil output according to the third preset target engine oil parameter and perform ignition control according to the third preset target ignition angle.

[0013] In another exemplary embodiment, the judgment module includes: a judgment unit configured to detect whether the current knocking intensity exceeds a preset knocking intensity range; a failure unit configured to, if it exceeds, indicate that the compression ratio switching process fails; a success unit configured to, if it does not exceed, indicate that the compression ratio switching process is successful.

[0014] According to one aspect of the embodiments of the present application, an electronic device is provided, including: a controller; a memory for storing one or more programs, which, when executed by the controller, are configured to execute the above control method.

[0015] According to one aspect of the embodiments of the present application, a computer-readable storage medium is further provided, on which computer-readable instructions are stored, which, when executed by a processor of a computer, cause the computer to execute the above control method.

[0016] According to one aspect of the embodiments of the present application, a computer program product or a computer program is further provided, which includes computer instructions stored in a computer-readable storage medium. A processor of a computer device reads the computer instructions from the computer-readable storage medium, and the processor executes the computer instructions, so that the computer device executes the above control method.

[0017] In the technical solution provided by the embodiments of the present application, it is detected whether the current compression ratio of the engine is the same as the required compression ratio of the target working condition; if not, the compression ratio switching parameter is calculated according to the vehicle working condition information, and it is detected whether the compression ratio switching parameter meets the preset compression ratio switching condition; if it meets, the target oil parameter and the target ignition angle required for the compression ratio switching process are quickly calculated according to the compression ratio switching parameter; if the target oil parameter meets the preset oil control condition, the oil output is controlled according to the target oil parameter, and the ignition control is performed according to the target ignition angle to complete the compression ratio switching process, improving the comprehensive fuel economy, power response and emissions.

[0018] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the present application. Brief Description of the Drawings

[0019] The drawings here are incorporated into the specification and constitute a part of this specification, showing the embodiments consistent with the present application, and are used together with the specification to explain the principles of the present application. Obviously, the drawings in the following description are only some embodiments of the present application, and those of ordinary skill in the art can obtain other drawings according to these drawings without creative efforts. In the drawings:

[0020] Figure 1 is a schematic diagram of an implementation environment related to the present application;

[0021] Figure 2 is a flowchart of a control method shown in an exemplary embodiment of the present application;

[0022] Figure 3 is based on Figure 2 shown in the embodiment is a flowchart of another control method proposed;

[0023] Figure 4 is based on Figure 3 shown in the embodiment is a flowchart of another control method proposed;

[0024] Figure 5 is based on Figure 2 shown in the embodiment is a flowchart of another control method proposed;

[0025] Figure 6 is based on Figure 2 shown in the embodiment is a flowchart of another control method proposed;

[0026] Figure 7 is based on Figure 2 shown in the embodiment is a flowchart of another control method proposed;

[0027] Figure 8 is based onFigure 7 Flowchart of another control method proposed by the illustrated embodiment;

[0028] Figure 9 Schematic structural diagram of a control device shown in an exemplary embodiment of the present application;

[0029] Figure 10 Schematic structural diagram of a computer system of an electronic device shown in an exemplary embodiment of the present application. Detailed implementation manners

[0030] Here, an exemplary embodiment will be described in detail, and its examples are shown in the drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The implementation manners described in the following exemplary embodiments do not represent all implementation manners consistent with the present application. On the contrary, they are merely examples of devices and methods consistent with some aspects of the present application as detailed in the appended claims.

[0031] The block diagrams shown in the drawings are only functional entities and do not necessarily correspond to physically independent entities. That is, these functional entities can be implemented in software form, or implemented in one or more hardware modules or integrated circuits, or implemented in different networks and / or processor devices and / or microcontroller devices.

[0032] The flowcharts shown in the drawings are only exemplary descriptions and do not necessarily include all contents and operations / steps, nor do they necessarily need to be executed in the described order. For example, some operations / steps can be decomposed, and some operations / steps can be combined or partially combined. Therefore, the actual execution order may change according to the actual situation.

[0033] In the present application, "a plurality of" means two or more. "And / or" describes the association relationship of associated objects and indicates that three relationships can exist. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. The character " / " generally represents an "or" relationship between the associated objects before and after.

[0034] First, please refer to Figure 1 , Figure 1 is a schematic diagram of an implementation environment related to the present application. This implementation environment includes a vehicle 100 and a controller 200. The vehicle 100 and the controller 200 communicate with each other through a wired or wireless network. The controller 200 can be placed in the vehicle 100 as shown in Figure 1 , or can be independent of the vehicle 100. The present application does not limit the specific position of the controller 200.

[0035] The controller 200 can obtain the operating condition information of the vehicle 100, including engine operating condition information, etc., such as vehicle speed, engine operating state, current compression ratio, compression ratio abnormality judgment flag bit, engine speed, engine load, accelerator pedal position, engine water temperature, oil temperature, target oil pressure, measured oil pressure, variable oil pump operating state, variable oil pump control signal, oil supply valve state, oil supply valve control signal, compression ratio switching state bit, ambient temperature and pressure, engine intake air temperature and pressure, intake air volume, engine front oxygen, GPF pressure, GPF inlet temperature, and battery power supply state, etc.

[0036] Exemplarily, the controller 200 detects whether the current compression ratio of the engine is the same as the required compression ratio of the target operating condition; if not, the compression ratio switching parameter is calculated according to the vehicle operating condition information, and it is detected whether the compression ratio switching parameter meets the preset compression ratio switching condition; if it meets, the target oil parameter and target ignition angle required for the compression ratio switching process are calculated according to the compression ratio switching parameter; if the target oil parameter meets the preset oil control condition, the oil output is controlled according to the target oil parameter, and ignition control is performed according to the target ignition angle to complete the compression ratio switching process.

[0037] Among them, the controller 200 can be an independent physical server, or a server cluster or distributed system composed of multiple physical servers. Multiple servers can form a blockchain, and the server is a node on the blockchain. The controller 200 can also be a cloud server that provides basic cloud computing services such as cloud services, cloud databases, cloud computing, cloud functions, cloud storage, network services, cloud communications, middleware services, domain name services, security services, CDN (Content Delivery Network), and big data and artificial intelligence platforms. This is not restricted here either.

[0038] Please refer to Figure 2 , Figure 2 is a flowchart of a control method shown in an exemplary embodiment of the present application. This method can be specifically executed by the controller 200 in the Figure 1 shown implementation environment. Of course, this method can also be applied to other implementation environments and be executed by server devices in other implementation environments. This embodiment does not restrict this. As Figure 2 shown, this method at least includes S210 to S240, which are introduced in detail as follows:

[0039] S210: Detect whether the current compression ratio of the engine is the same as the required compression ratio of the target operating condition.

[0040] The current compression ratio of the engine is calculated according to the operating condition information of the current vehicle, and the required compression ratio of the target operating condition can be further calculated according to the operating condition information of the current vehicle.

[0041] Exemplarily, by determining whether to cross the optimal switching line of high and low compression ratio calibration, it is confirmed whether the compression ratio needs to be switched. If the required compression ratio of the target working condition is inconsistent with the current compression ratio, and the working condition during the acceleration and deceleration process needs to cross the optimal switching line of compression ratio calibration, it is confirmed that there is a need for compression ratio switching.

[0042] S220: If they are different, calculate the compression ratio switching parameters according to the vehicle working condition information, and detect whether the compression ratio switching parameters meet the preset compression ratio switching conditions.

[0043] If they are different, further judge the preset compression ratio switching conditions. Exemplarily, confirm whether the intake air temperature and pressure, water temperature, intake air volume, fuel injection, air-fuel ratio, exhaust temperature, and exhaust pressure of the engine are normal, and whether the oil pressure, oil temperature, oil pump, and oil supply valve state are normal.

[0044] S230: If they are met, calculate the target oil parameters and target ignition angle required for the compression ratio switching process according to the compression ratio switching parameters.

[0045] If the preset compression ratio switching conditions are met and the compression ratio switching function is activated, calculate the duration required for compression ratio switching according to the optimization mode, the start time point of compression ratio switching, and the end time point of compression ratio switching; further calculate the oil pressure and ignition angle required for compression ratio switching according to the optimization mode.

[0046] S240: If the target oil parameters meet the preset oil control conditions, control the oil output according to the target oil parameters and perform ignition control according to the target ignition angle to complete the compression ratio switching process.

[0047] The target oil parameters include oil pressure, oil temperature, remaining space of oil storage, etc.

[0048] Exemplarily, if the target oil parameters meet the preset oil control conditions, start the compression ratio switching process at the start time point of compression ratio switching, control the output of the required oil pressure through the variable oil pump and the oil supply valve, output the required ignition angle through the ignition angle control model, and monitor the intake air temperature and pressure, exhaust temperature and pressure, air-fuel ratio, intake air volume, knock signal, and control situation of the engine in real time during the switching process, confirm whether the combustion is abnormal, confirm whether the compression ratio switching matches the change requirements of the working condition, use the deviation amount as the adjustment amount for subsequent cycles for correction, and perform ignition angle and load protection adjustments according to the fault level.

[0049] In this embodiment, it is detected whether the current compression ratio of the engine is the same as the required compression ratio of the target working condition; if not, a compression ratio switching parameter is calculated according to the vehicle working condition information, and it is detected whether the compression ratio switching parameter meets the preset compression ratio switching condition; if it meets, the target oil parameter and the target ignition angle required for the compression ratio switching process are quickly calculated according to the compression ratio switching parameter; if the target oil parameter meets the preset oil control condition, the oil output is controlled according to the target oil parameter, and the ignition control is performed according to the target ignition angle to complete the compression ratio switching process, accurately calculate the time point of the compression ratio switching and the required oil pressure and ignition angle control, realize the rapid response of the compression ratio switching process, maintain the accurate control of the optimal ignition angle in the area near the compression ratio switching line, and improve the comprehensive fuel economy, power response and emission optimization.

[0050] In another exemplary embodiment of the present application, the source of the required compression ratio of the target working condition is further described. For details, please refer to Figure 3 , Figure 3 which is based on Figure 2 shown in the embodiment, and is a flowchart of another control method. This method further includes S310 to S320 before S210 shown in Figure 2 shown below, and the details are as follows:

[0051] S310: Obtain vehicle working condition information.

[0052] Exemplarily, obtain the vehicle speed, engine speed, throttle pedal position, intake air temperature and pressure, intake air volume, current compression ratio, variable oil pump state, control signal, oil supply valve state, control signal, oil temperature and pressure, ignition angle, and knock control signal in the vehicle working condition information.

[0053] S320: Calculate the required compression ratio of the target working condition according to the vehicle working condition information.

[0054] Exemplarily, according to the vehicle working condition information, the change rate of the throttle pedal, the engine speed and load under the target working condition can be calculated, and the area swept by the engine from the current working condition to the target working condition and the required duration of the working condition change are calculated, so as to calculate the required compression ratio of the target working condition.

[0055] This embodiment shows that the controller 200 can obtain real-time vehicle working condition information from the vehicle 100 and quickly calculate the required compression ratio of the target working condition according to the vehicle working condition information.

[0056] In another exemplary embodiment of the present application, the calculation process of the required compression ratio of the target working condition is further described. For details, please refer to Figure 4 , Figure 4 which is based on Figure 3 shown in the embodiment, and is a flowchart of another control method. This method is as followsFigure 3 The S320 shown also includes S410 to S430, which are introduced in detail below:

[0057] S410: Calculate the target vehicle speed of the target working condition based on the vehicle working condition information.

[0058] Calculate the magnitude of the target vehicle speed based on the initial position and change rate of the accelerator pedal.

[0059] S420: Determine the target engine speed and target torque based on the target vehicle speed.

[0060] Based on the vehicle speed and gear information, obtain the target engine speed and torque. According to the relationship between the target engine speed, load, target compression ratio, and ignition angle calibrated by the engine, as well as the area that needs to be swept through due to the change of the engine working condition, determine the required compression ratio for the target working condition.

[0061] S430: Determine the required compression ratio for the target working condition based on the target speed and target torque.

[0062] Based on the target speed and target torque, the relationship with the target compression ratio and ignition angle, and the area that needs to be swept through due to the change of the engine working condition, determine the required compression ratio for the target working condition. Further determine whether it will cross the optimal switching line between the high and low compression ratio calibrations to confirm whether a compression ratio switch is required.

[0063] In this embodiment, the power demand of the driver is estimated through the change rate of the vehicle engine speed and load. According to the change demand of the working condition, the operating state of the engine, the compression ratio, and the operating state of its control system, the compression ratio of the target working condition is quickly calculated, so as to compare the current compression ratio of the engine with the required compression ratio of the target working condition, and quickly and accurately determine whether a compression ratio switch is required.

[0064] In another exemplary embodiment of the present application, it is introduced how to further perform subsequent control steps if it is detected that the current compression ratio of the engine is the same as the required compression ratio of the target working condition. For details, please refer to Figure 5 , Figure 5 is based on Figure 2 The flowchart of another control method proposed by the shown embodiment. This method includes S510 to S520 in S210 as shown in Figure 2 The S210 shown is introduced in detail below:

[0065] S510: If it is detected that the current compression ratio of the engine is the same as the required compression ratio of the target working condition, then determine the first preset target oil parameter and the first preset target ignition angle based on the current compression ratio of the engine.

[0066] If the current compression ratio of the engine is the same as the required compression ratio for the target operating condition, there is no need to perform compression ratio switching. The compression ratio switching function remains off, and a fault signal is output. Then, the current compression ratio can be used as the required compression ratio, and the calibrated first preset target oil parameter and the first preset target ignition angle can be obtained based on the current compression ratio.

[0067] S520: Control the oil output according to the first preset target oil parameter, and perform ignition control according to the first preset target ignition angle.

[0068] In some cases, the first preset target oil parameter can be equivalent to the target oil parameter; similarly, in some cases, the first preset target ignition angle can be equivalent to the target ignition angle, and the present application does not limit this.

[0069] This embodiment specifically illustrates that if there is no need for compression ratio switching, the oil output is controlled according to the first preset target oil parameter, and ignition control is performed according to the first preset target ignition angle to improve the comprehensive fuel economy, power response, and emissions.

[0070] In another exemplary embodiment of the present application, the importance of the step of detecting whether the target oil parameter meets the preset oil control condition is illustrated. For details, please refer to Figure 6 , Figure 6 which is Figure 2 a flowchart of another control method proposed based on the Figure 2 illustrated embodiment. After S230 as shown in

[0071]

[0072]

[0073]

[0074] S620: If the target oil parameter does not meet the preset oil control condition, control the oil output according to the second preset target oil parameter, and perform ignition control according to the second preset target ignition angle to complete the switching of the required compression ratio.

[0074] Exemplarily, when the oil pressure condition does not meet the requirement for compression ratio switching in the optimization mode, the oil pressure and ignition angle calibration values in the safety mode are output, that is, the second preset target oil parameter and the second preset target ignition angle in this embodiment, to complete the compression ratio switching.

[0075] This embodiment does not limit the relationship between the second preset target engine oil parameters, the first preset target engine oil parameters, and the target engine oil parameters. In some cases, the three may be equal, or two of them may be equal, and this application does not limit this; similarly, this application does not limit the relationship between the second preset target ignition angle, the first preset target ignition angle, and the target ignition angle. Similarly, the corresponding relationship between the following third preset target engine oil parameters and the third preset target ignition angle is not limited either.

[0076] In another exemplary embodiment of the present application, it further illustrates how to determine whether the compression ratio switching process is successful. For details, please refer to Figure 7 , Figure 7 which is based on Figure 2 shown in the embodiment and is a flowchart of another control method. This method further includes S710 to S730, which are introduced in detail below:

[0077] S710: Determine whether the compression ratio switching process is successful according to the current knocking intensity.

[0078] S720: If not successful, determine the third preset target engine oil parameters and the third preset target ignition angle according to the current compression ratio of the engine.

[0079] S730: Control the engine oil output according to the third preset target engine oil parameters, and perform ignition control according to the third preset target ignition angle.

[0080] An exemplary description of this embodiment is as follows: When the compression ratio switching process is completed, determine whether the compression ratio switching is successful according to the knocking intensity, and determine whether the engine operating state is normal. When the compression ratio switching is determined to be a failure, maintain the engine oil pressure and ignition angle required for the compression ratio before switching, that is, the third preset target engine oil parameters and the third preset target ignition angle in this embodiment, and further perform load reduction and shutdown processing according to the fault level. After the compression ratio switching process is completed, enter the demand judgment for the next compression ratio switching.

[0081] This embodiment can output different fault codes according to the severity level of combustion anomalies and perform fault protection according to different control strategies of adjusting the ignition angle, appropriately enriching the mixture, reducing the load operation, limp-home, and emergency shutdown respectively.

[0082] Please refer to Figure 8 , Figure 8 which is based on Figure 7 shown in the embodiment and is a flowchart of another control method.

[0083] This method includes S810 to S830 in S710 as shown in Figure 7 shown below, which are introduced in detail below:

[0084] S810: Detect whether the current knocking intensity exceeds the preset knocking intensity range.

[0085] S820: If it exceeds, it indicates that the compression ratio switching process fails.

[0086] S830: If it does not exceed, it indicates that the compression ratio switching process is successful.

[0087] Exemplarily, the preset knock intensity range is [100 units, 500 units]. If the current knock intensity is 200 units, that is, the current knock intensity is within the preset knock intensity range, it indicates that the compression ratio switching process is successful; if the current knock intensity is 80 units, that is, the current knock intensity exceeds the preset knock intensity range, it indicates that the compression ratio switching process fails.

[0088] In this embodiment, the knock intensity is further associated with the success or failure of compression ratio switching. By detecting whether the current knock intensity exceeds the preset knock intensity range, it is determined whether the compression ratio switching process fails. If the compression ratio switching process fails, that is, a compression ratio switching fault occurs, the ignition angle and oil pressure required to maintain the compression ratio before switching are maintained, and the load is reduced and the engine is shut down according to the fault level. After the compression ratio switching process ends, the demand judgment for the next compression ratio switching is entered.

[0089] On the other hand, the present application also provides a control device, as Figure 9 shown, Figure 9 is a schematic structural diagram of the control device shown in an exemplary embodiment of the present application. Among them, the control device includes:

[0090] The first detection module 910 is configured to detect whether the current compression ratio of the engine is the same as the required compression ratio of the target working condition.

[0091] The second detection module 930 is configured to, if they are different, calculate the compression ratio switching parameter according to the vehicle working condition information, and detect whether the compression ratio switching parameter meets the preset compression ratio switching condition.

[0092] The calculation module 950 is configured to, if it is satisfied, calculate the target oil parameter and target ignition angle required for the compression ratio switching process according to the compression ratio switching parameter.

[0093] The first control module 970 is configured to, if the target oil parameter meets the preset oil control condition, control the oil output according to the target oil parameter, and perform ignition control according to the target ignition angle to complete the compression ratio switching process.

[0094] In another exemplary embodiment, the control device further includes:

[0095] The acquisition module is configured to acquire the vehicle working condition information.

[0096] A demand compression ratio calculation module, configured to calculate a demand compression ratio of a target operating condition according to vehicle operating condition information.

[0097] In another exemplary embodiment, the demand compression ratio calculation module includes:

[0098] A calculation unit, configured to calculate a target vehicle speed of a target operating condition according to vehicle operating condition information.

[0099] A first determination unit, configured to determine a target engine speed and a target torque of the engine according to the target vehicle speed.

[0100] A second determination unit, configured to determine a demand compression ratio of the target operating condition according to the target engine speed and the target torque.

[0101] In another exemplary embodiment, the first detection module 910 includes:

[0102] A first detection unit, configured to, if it is detected that the current compression ratio of the engine is the same as the demand compression ratio of the target operating condition, determine a first preset target oil parameter and a first preset target ignition angle according to the current compression ratio of the engine.

[0103] A first control unit, configured to control the oil output according to the first preset target oil parameter, and perform ignition control according to the first preset target ignition angle.

[0104] In another exemplary embodiment, the control device further includes:

[0105] An oil parameter detection module, configured to detect whether a target oil parameter meets a preset oil control condition.

[0106] A second control module, configured to, if the target oil parameter does not meet the preset oil control condition, control the oil output according to a second preset target oil parameter, and perform ignition control according to a second preset target ignition angle, so as to complete the switching of the demand compression ratio.

[0107] In another exemplary embodiment, the control device further includes:

[0108] A judgment module, configured to determine whether the compression ratio switching process is successful according to the current knocking intensity.

[0109] A failure module, configured to, if it is not successful, determine a third preset target oil parameter and a third preset target ignition angle according to the current compression ratio of the engine.

[0110] A third control module, configured to control the oil output according to the third preset target oil parameter, and perform ignition control according to the third preset target ignition angle.

[0111] In another exemplary embodiment, the judgment module includes:

[0112] A determination unit, configured to detect whether a current knock intensity exceeds a preset knock intensity range.

[0113] A failure unit, configured to indicate that the compression ratio switching process fails if the intensity exceeds the range.

[0114] A success unit, configured to indicate that the compression ratio switching process is successful if the intensity does not exceed the range.

[0115] It should be noted that the control device provided in the above embodiment and the control method provided in the foregoing embodiment belong to the same concept. The specific manners in which each module and unit perform operations have been described in detail in the method embodiment, and will not be elaborated herein.

[0116] Another aspect of the present application further provides an electronic device, including: a controller; a memory, configured to store one or more programs, which, when executed by the controller, are used to execute the above control method.

[0117] Please refer to Figure 10 , Figure 10 which is a schematic structural diagram of a computer system of an electronic device shown in an exemplary embodiment of the present application, and shows a schematic structural diagram of a computer system of an electronic device suitable for implementing the embodiment of the present application.

[0118] It should be noted that Figure 10 the computer system 1000 of the electronic device shown is only an example, and should not impose any limitation on the functions and usage scope of the embodiment of the present application.

[0119] As Figure 10 shown, the computer system 1000 includes a central processing unit (CPU) 1001, which can perform various appropriate actions and processes according to a program stored in a read-only memory (ROM) 1002 or a program loaded from a storage section 1008 into a random access memory (RAM) 1003, such as executing the method in the above embodiment. In the RAM 1003, various programs and data required for system operation are also stored. The CPU 1001, the ROM 1002, and the RAM 1003 are connected to each other through a bus 1004. An input / output (I / O) interface 1005 is also connected to the bus 1004.

[0120] The following components are connected to the I / O interface 1005: an input section 1006 including a keyboard, a mouse, etc.; an output section 1007 including a cathode ray tube (CRT), a liquid crystal display (LCD), etc. and a speaker, etc.; a storage section 1008 including a hard disk, etc.; and a communication section 1009 including a network interface card such as a LAN (Local Area Network) card, a modem, etc. The communication section 1009 performs communication processing via a network such as the Internet. A drive 1010 is also connected to the I / O interface 1005 as required. A removable medium 1011, such as a magnetic disk, an optical disk, a magneto-optical disk, a semiconductor memory, etc., is mounted on the drive 1010 as required so that a computer program read therefrom is installed into the storage section 1008 as required.

[0121] Specifically, according to an embodiment of the present application, the processes described above with reference to the flowcharts can be implemented as computer software programs. For example, an embodiment of the present application includes a computer program product that includes a computer program carried on a computer-readable medium, and the computer program includes a computer program for executing the method shown in the flowchart. In such an embodiment, the computer program can be downloaded and installed from a network via the communication section 1009, and / or installed from the removable medium 1011. When the computer program is executed by a central processing unit (CPU) 1001, various functions defined in the system of the present application are executed.

[0122] It should be noted that the computer-readable medium shown in the embodiments of the present application can be a computer-readable signal medium, a computer-readable storage medium, or any combination of the two. A computer-readable storage medium can be, for example, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination of the above. More specific examples of the computer-readable storage medium 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), a flash memory, an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the above. In the present application, the computer-readable storage medium can be any tangible medium that contains or stores a program, and this program can be used by or in combination with an instruction execution system, apparatus, or device. In the present application, a computer-readable signal medium can include a data signal propagated in a baseband or as part of a carrier wave, in which a computer-readable computer program is carried. Such a propagated data signal can take various forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination of the above. A computer-readable signal medium can also be any computer-readable medium other than a computer-readable storage medium, and this computer-readable medium can send, propagate, or transmit a program for use by or in combination with an instruction execution system, apparatus, or device. The computer program contained on the computer-readable medium can be transmitted by any appropriate medium, including but not limited to: wireless, wired, etc., or any suitable combination of the above.

[0123] The flowcharts and block diagrams in the accompanying drawings illustrate the possible architectures, functions, and operations of systems, methods, and computer program products according to various embodiments of the present application. Among them, each block in the flowchart or block diagram can represent a module, a program segment, or a part of the code, and the above module, program segment, or part of the code contains one or more executable instructions for implementing the specified logical function. It should also be noted that in some alternative implementations, the functions marked in the blocks may occur in an order different from that marked in the accompanying drawings. For example, two consecutive blocks shown may actually be executed substantially in parallel, and they may sometimes be executed in the reverse order, depending on the functions involved. It should also be noted that each block in the block diagram or flowchart, and the combination of blocks in the block diagram or flowchart, can be implemented by a dedicated hardware-based system for performing the specified functions or operations, or can be implemented by a combination of dedicated hardware and computer instructions.

[0124] The units involved in the embodiments of this application can be implemented in software or in hardware, and the described units can also be provided in a processor. Among them, the names of these units do not, in some cases, constitute a limitation on the units themselves.

[0125] Another aspect of this application also provides a computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, the foregoing control method is implemented. The computer-readable storage medium may be included in the electronic device described in the foregoing embodiments, or may exist alone without being assembled into the electronic device.

[0126] Another aspect of this application also provides a computer program product or a computer program. The computer program product or the computer program includes computer instructions, and the computer instructions are stored in a computer-readable storage medium. A processor of a computer device reads the computer instructions from the computer-readable storage medium, and the processor executes the computer instructions, so that the computer device executes the control methods provided in the foregoing various embodiments.

[0127] According to one aspect of the embodiments of this application, a computer system is also provided, including a central processing unit (CPU), which can perform various appropriate actions and processes according to a program stored in a read-only memory (ROM) or a program loaded from a storage section into a random access memory (RAM), such as executing the method in the foregoing embodiments. In the RAM, various programs and data required for system operations are also stored. The CPU, ROM, and RAM are connected to each other via a bus. An input / output (I / O) interface is also connected to the bus.

[0128] The following components are connected to the I / O interface: an input section including a keyboard, a mouse, etc.; an output section including a cathode ray tube (CRT), a liquid crystal display (LCD), etc. and a speaker, etc.; a storage section including a hard disk, etc.; and a communication section including a network interface card such as a LAN (Local Area Network) card, a modem, etc. The communication section performs communication processing via a network such as the Internet. A drive is also connected to the I / O interface as required. A removable medium, such as a magnetic disk, an optical disc, a magneto-optical disc, a semiconductor memory, etc., is installed on the drive as required, so that a computer program read from it can be installed into the storage section as required.

[0129] The above content is only a preferred exemplary embodiment of the present application and is not intended to limit the implementation of the present application. Those of ordinary skill in the art can easily make corresponding adaptations or modifications according to the main concept and spirit of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope required by the claims.

Claims

1. A vehicle control method, characterized in that, Including: Detect whether the current compression ratio of the engine is the same as the required compression ratio of the target working condition; If they are different, calculate a compression ratio switching parameter according to the vehicle working condition information, and detect whether the compression ratio switching parameter meets a preset compression ratio switching condition; If it meets the condition, calculate a target oil parameter and a target ignition angle required for the compression ratio switching process according to the compression ratio switching parameter; If the target oil parameter meets a preset oil control condition, control the oil output according to the target oil parameter, and perform ignition control according to the target ignition angle to complete the compression ratio switching process; Determine whether the compression ratio switching process is successful according to the current knocking intensity; If it is not successful, determine a third preset target oil parameter and a third preset target ignition angle according to the current compression ratio of the engine; Control the oil output according to the third preset target oil parameter, perform ignition control according to the third preset target ignition angle, and perform load reduction and shutdown processing according to the fault level.

2. The method according to claim 1, characterized in that, Before detecting whether the current compression ratio of the engine is the same as the required compression ratio of the target working condition, the method further includes: Obtain the vehicle working condition information; Calculate the required compression ratio of the target working condition according to the vehicle working condition information.

3. The method according to claim 2, characterized in that, The calculating the required compression ratio of the target working condition according to the vehicle working condition information includes: Calculate the target vehicle speed of the target working condition according to the vehicle working condition information; Determine the target engine speed and target torque according to the target vehicle speed; Determine the required compression ratio of the target working condition according to the target engine speed and target torque.

4. The method according to claim 1, wherein The detecting whether the current compression ratio of the engine is the same as the required compression ratio of the target working condition includes: If it is detected that the current compression ratio of the engine is the same as the required compression ratio of the target working condition, determine a first preset target oil parameter and a first preset target ignition angle according to the current compression ratio of the engine; Control the oil output according to the first preset target oil parameter, and perform ignition control according to the first preset target ignition angle.

5. The method according to claim 1, characterized in that, After calculating the target oil parameter and the target ignition angle required for the compression ratio switching process according to the compression ratio switching parameter, the method further includes: Detect whether the target oil parameter meets the preset oil control condition; If the target oil parameter does not meet the preset oil control condition, control the oil output according to a second preset target oil parameter, and perform ignition control according to a second preset target ignition angle to complete the switching of the required compression ratio.

6. The method according to claim 1, characterized in that, The determining whether the compression ratio switching process is successful according to the knocking intensity includes: Detect whether the current knocking intensity exceeds a preset knocking intensity range; If it exceeds, it indicates that the compression ratio switching process fails; If it does not exceed, it indicates that the compression ratio switching process is successful.

7. A vehicle control device, characterized in that, Including: A first detection module configured to detect whether the current compression ratio of the engine is the same as the required compression ratio of the target working condition; A second detection module configured to, if they are different, calculate a compression ratio switching parameter according to the vehicle working condition information, and detect whether the compression ratio switching parameter meets a preset compression ratio switching condition; A calculation module, configured to calculate target engine oil parameters and a target ignition angle required for a compression ratio switching process according to the compression ratio switching parameter if a condition is satisfied; A first control module, configured to control engine oil output according to the target engine oil parameters and perform ignition control according to the target ignition angle if the target engine oil parameters meet a preset engine oil control condition, so as to complete the compression ratio switching process; A judgment module, configured to determine whether the compression ratio switching process is successful according to the current knocking intensity; A failure module, configured to determine third preset target engine oil parameters and a third preset target ignition angle according to the current compression ratio of the engine if the process is not successful; A third control module, configured to control engine oil output according to the third preset target engine oil parameters, perform ignition control according to the third preset target ignition angle, and perform load reduction and shutdown processing according to a fault level.

8. An electronic device, characterized in that, including: A controller; A memory, configured to store one or more programs, which, when executed by the controller, cause the controller to implement the control method according to any one of claims 1 to 6.

9. A computer-readable storage medium, characterized in that, Computer-readable instructions are stored thereon, which, when executed by a processor of a computer, cause the computer to execute the control method according to any one of claims 1 to 6.

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