Engine starting control system, vehicle and hybrid tractor

Abstract

The invention provides an engine starting control system, a vehicle and a hybrid tractor, and relates to the technical field of vehicle control. A vehicle control unit is in communication connection with a motor controller, an engine controller and a battery management module; the motor controller is electrically connected with the generator; the engine controller is connected with the engine; the battery management module is in communication connection with the power battery; the vehicle control unit is used for controlling the motor to operate in a first working state in response to a vehicle starting signal so as to drag the engine; after the engine is started to run, monitoring the electric power characteristic of the motor; if the electric power characteristic of the motor is converted from the first electric power characteristic to the second electric power characteristic within the preset duration, it is judged that the engine is started successfully; and when it is judged that the engine is started successfully, the target rotating speed and / or the target torque of the engine are / is adjusted according to the vehicle state signal, so that accurate starting judgment and intelligent speed regulation are achieved, battery feed is avoided, and the optimal running state of the hybrid tractor is guaranteed.

Description

Technical Field

[0001] This invention relates to the field of vehicle control technology, and more specifically, to an engine start control system, a vehicle, and a hybrid tractor. Background Technology

[0002] Traditional tractors typically use a starter motor to start the diesel engine, which suffers from problems such as low starting torque, difficulty in cold starts, significant starting vibration, and the need for regular maintenance of the starter motor's carbon brushes. While hybrid technology offers a smoother and more powerful starting process by using a drive motor to start the engine, it also has the following drawbacks: During the engine starting process, the motor may misjudge a starting failure and prematurely terminate the process, affecting the success rate and user experience; or it may misjudge a successful start when the engine is not actually ignited, causing the motor to continue driving and consuming battery power, potentially leading to battery depletion. Furthermore, current technology does not consider how to intelligently adjust the engine's performance based on the vehicle's actual operating conditions after a successful start to achieve optimal fuel economy and power. Summary of the Invention

[0003] In view of this, the purpose of the present invention is to provide an engine start control system, a vehicle and a hybrid tractor, so as to achieve accurate and reliable judgment on whether the engine starts successfully, effectively avoid battery depletion, and intelligently adjust speed according to the vehicle status, so as to keep the hybrid tractor in the best operating state.

[0004] In a first aspect, this application provides an engine starting control system, including: a vehicle controller, a motor controller, an engine controller, a battery management module, and a power battery; wherein the vehicle controller is communicatively connected to the motor controller, the engine controller, and the battery management module respectively; The motor controller is electrically connected to the generator and is used to control the generator's operation; The engine controller communicates with the engine and is used to control the engine's fuel injection, air intake, and torque output. The battery management module communicates with the power battery and is used to manage the charging, discharging and status monitoring of the power battery. The vehicle controller, in response to a vehicle start signal, controls the motor to operate in a first operating state to drive the engine; wherein the first operating state is that the motor outputs positive torque; after the engine starts running, it monitors the electric power characteristics of the motor; if the electric power characteristics of the motor change from the first electric power characteristics to the second electric power characteristics within a preset time period, it determines that the engine has started successfully; wherein the first electric power characteristics are that the motor is in the first operating state and consumes electrical energy from the power battery, and the second electric power characteristics are that the motor is in the second operating state and outputs electrical energy; the second operating state is that the motor outputs negative torque; when the engine start is determined to be successful, it adjusts the target speed and / or target torque of the engine according to at least one vehicle status signal.

[0005] Optionally, the vehicle controller is also used for: The motor is controlled to enter the speed control mode and the engine is driven to the preset target starting speed. Once the engine reaches the target starting speed, the system controls the engine to inject fuel and ignite.

[0006] Optionally, the electric power characteristics of the motor are determined by the sign of the electric power output by the motor controller; wherein, the electric power characteristics include a first electric power characteristic and a second electric power characteristic. The first electric power characteristic is that the motor operates in the first quadrant, outputting positive torque and consuming electrical energy; the second electric power characteristic is that the motor operates in the fourth quadrant, outputting negative torque and consuming electrical energy.

[0007] Optionally, the vehicle status signal includes at least one of the following: power battery state of charge signal, air conditioning on signal, and hydraulic system working signal.

[0008] Optionally, the vehicle controller is also used for: In response to different vehicle status signals, the target speed of the engine is adjusted to the corresponding first preset speed, second preset speed or third preset speed, and the corresponding first torque request, second torque request or third torque request is sent.

[0009] Optionally, the vehicle controller is also used for: If the motor's power characteristic remains at the first power characteristic until the preset time expires, the engine is deemed to have failed to start.

[0010] Optionally, the vehicle controller is also used for: Control the motor to stop running; After a preset interval, the motor is restarted to run in the first working state to perform a restart operation.

[0011] Optionally, the vehicle controller is also used for: The number of times the engine failed to start; If the number of engine start failures has not reached the set threshold, a restart operation will be performed. If the number of engine start failures reaches the set threshold, the start-up process ends and start-up fault information is output.

[0012] Secondly, this application provides a vehicle including the aforementioned engine start control system.

[0013] Thirdly, this application provides a hybrid tractor, including the aforementioned engine start control system.

[0014] This invention provides an engine start control system, a vehicle, and a hybrid tractor. The system is communicatively connected to a motor controller, an engine controller, and a battery management module via a vehicle controller. The motor controller is electrically connected to a generator; the engine controller is connected to the engine; and the battery management module is communicatively connected to a power battery. Upon receiving a vehicle start signal, the vehicle controller controls the motor to operate in a first working state to drive the engine. After the engine starts, the system monitors the motor's power characteristics. If, within a preset time period, the motor's power characteristics change from the first power characteristic to the second power characteristic, the engine start is considered successful. Upon successful engine start, the system adjusts the engine's target speed and / or target torque based on vehicle status signals to achieve accurate and reliable judgment of engine start success, effectively preventing battery depletion. It also performs intelligent speed adjustment based on vehicle status to maintain the hybrid tractor in optimal operating condition.

[0015] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 A schematic diagram of the structure of an engine start control system provided in an embodiment of the present invention is shown; Figure 2 A schematic diagram of the electrical power characteristics of the motor provided in an embodiment of the present invention is shown; Figure 3 An interactive flowchart of a control method for an engine start control system provided in an embodiment of the present invention is shown; Figure 4A schematic diagram of the structure of an electronic device provided in an embodiment of the present invention is shown. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0019] To facilitate a better understanding of this application by those skilled in the art, the technical terms used in this application will be briefly introduced below.

[0020] The engine control unit (ECU) is used to control the engine's fuel injection, air intake, and operating status in order to output target torque and speed. The generator control unit (GCU) is a bidirectional power supply device for rectifier and inverter. When installed on a tractor, it can realize inverter discharge and rectifier charging, and control the generator to switch between four-quadrant operating states. The Battery Management System (BMS) is used to manage the charging and discharging of the power battery, monitor its temperature, and detect its insulation, and to send battery status information to the vehicle controller. The power battery (BAT) serves as the vehicle's energy storage unit, used for charging and discharging. The generator, as a power input and conversion unit, is controlled by a motor controller. In this application, during the startup phase, the motor controller drives the generator to operate as a motor (working in the first quadrant) and drag the engine. After successful startup, the engine, in turn, drives the generator to operate as a generator (working in the fourth quadrant) to charge the power battery. The real-time speed and power signals of the generator are fed back to the motor controller through a measuring device to form a closed-loop control.

[0021] The engine, as a power output unit, is driven by a generator during the startup phase and outputs mechanical power after startup.

[0022] The Vehicle Control Unit (VCU) is used to collect, monitor, and process vehicle input signals, such as key start signals, air conditioning start signals, and hydraulic operation signals. It combines these signals with the status of the battery management module, motor controller, and engine controller to execute control strategies. Specifically, the control strategies include: controlling the generator via the motor controller to drive the engine to the target speed, then instructing the engine controller to control fuel injection and ignition; switching to generator mode after successful engine start; adjusting engine speed and torque based on battery charge and load requirements; and triggering power limiting or shutdown protection if the engine fails to start a preset number of times.

[0023] After introducing the technical terms used in this application, the technical solution provided in this application will be described in detail below.

[0024] This application provides an engine start control system, see below. Figure 1 As shown, the engine start control system provided in this application embodiment includes: a vehicle controller 110, a motor controller 130, an engine controller 120, a battery management module 140, and a power battery 150; wherein, the vehicle controller 110 is communicatively connected to the motor controller 130, the engine controller 120, and the battery management module 140 respectively; the motor controller 130 is electrically connected to the generator 160 and is used to control the operation of the generator 160; the engine controller 120 is connected to the engine 170 and is used to control the fuel injection, air intake, and torque output of the engine 170; the battery management module 140 is communicatively connected to the power battery 150 and is used to manage the charging and discharging and status monitoring of the power battery 150.

[0025] In one optional embodiment, the vehicle controller 110 is configured to control the motor to operate in a first operating state in response to a vehicle start signal, so as to drive the engine; wherein, the first operating state is that the motor outputs positive torque; after the engine starts running, the electric power characteristics of the motor are monitored; if the electric power characteristics of the motor change from the first electric power characteristics to the second electric power characteristics within a preset time period, the engine is determined to have started successfully; wherein, the first electric power characteristics are that the motor is in the first operating state and consumes the power battery's electrical energy, and the second electric power characteristics are that the motor is in the second operating state and outputs electrical energy; the second operating state is that the motor outputs negative torque; when the engine is determined to have started successfully, the target speed and / or target torque of the engine are adjusted according to at least one vehicle status signal.

[0026] Furthermore, the vehicle controller is also used to: control the motor to enter the speed control mode and drag the engine to the preset target starting speed; and control the engine to inject fuel and ignite after receiving the engine reaching the target starting speed.

[0027] In this embodiment, when the driver activates the key to start the vehicle, if the vehicle controller detects that the key start signal has been triggered and the motor controller, engine controller, and battery management module are all in normal condition, the vehicle controller executes the engine start control process. Specifically, the start control process is as follows: the vehicle controller sends a control command to the motor controller, causing the motor to enter a speed control mode, and sends a preset target start speed to the motor controller. The target start speed can be set to a value within the range of 800 rpm to 1200 rpm. Based on the received target start speed, the motor controller controls the motor to operate in a first working state. At this time, the motor works as a motor, outputting positive torque, consuming the power battery's energy, and driving the engine crankshaft to rotate through the transmission mechanism, causing the engine speed to smoothly rise to the target start speed. After the engine speed reaches the target start speed, the vehicle controller sends a fuel injection and ignition command to the engine controller, or the engine controller automatically executes fuel injection and ignition operations according to preset conditions, causing the engine to begin outputting power torque. After the engine is started, the electric power characteristics of the motor are monitored. If the electric power characteristics of the motor change from the first electric power characteristic to the second electric power characteristic within a preset time T1 (e.g., 3 seconds), the engine is determined to have started successfully. When the engine is determined to have started successfully, the target speed and / or target torque of the engine are adjusted according to at least one vehicle status signal. If the electric power characteristics of the motor remain at the first electric power characteristic at the end of the preset time, the engine is determined to have started unsuccessfully. This is to confirm whether the engine has started successfully by monitoring the changes in the state of the motor and to optimize the vehicle operation strategy accordingly.

[0028] In one optional embodiment, the electric power characteristics of the motor are determined by the sign of the electric power output by the motor controller; wherein, the electric power characteristics include a first electric power characteristic and a second electric power characteristic, the first electric power characteristic is that the motor operates in the first quadrant, outputting positive torque and consuming electrical energy; the second electric power characteristic is that the motor operates in the fourth quadrant, outputting negative torque and consuming electrical energy.

[0029] In the embodiments of this application, such as Figure 2 As shown, the first power characteristic corresponds to the motor operating in the first quadrant. At this time, the motor is in the first working state, running with positive torque and consuming electrical energy, and the power output by the motor controller is positive. The second power characteristic corresponds to the motor operating in the fourth quadrant. At this time, the motor is in the second working state, running with negative torque and consuming electrical energy, and the power output by the motor controller is negative.

[0030] In one optional embodiment, the vehicle status signal includes at least one of the following: a power battery state of charge signal, an air conditioning activation signal, and a hydraulic system operation signal. In this application, the vehicle controller is further configured to: adjust the target engine speed to a corresponding first preset speed, a second preset speed, or a third preset speed in response to different vehicle status signals, and send a corresponding first torque request, a second torque request, or a third torque request.

[0031] In this embodiment of the application, after the engine starts successfully, the vehicle controller dynamically adjusts the target speed and / or target torque of the engine based on at least one vehicle status signal monitored in real time, so as to make the hybrid tractor power system work in an efficient and reasonable state, meet the needs of different working conditions and optimize the energy management of the whole vehicle.

[0032] In this application, the vehicle controller pre-stores target speed values ​​and torque request values ​​corresponding to different vehicle status signals, and performs corresponding adjustments based on the detected signal combinations, as follows: If the vehicle controller detects that the power reported by the battery management module is in a discharge state (or the state of charge of the power battery is lower than the preset threshold), and there is no high-power accessory load, in order to maintain the battery power, the vehicle controller increases the engine target speed to the first preset speed n1 and sends the first torque request t1 to the engine controller, so that the engine works in the high-efficiency range that can simultaneously drive the vehicle and charge the battery. At this time, the system is in the power holding mode. If the vehicle controller detects that the power reported by the battery management module is in a charging state (or the power battery has a low state of charge and there is an active charging demand), it increases the engine target speed to the second preset speed n2 and sends a second torque request t2 to the engine controller to increase the power generation and quickly replenish the battery power. At this time, the system is in charging priority mode. If the vehicle controller detects that the air conditioning is turned on, in order to compensate for the power consumption of the air conditioning compressor, the vehicle controller will increase the engine target speed to the third preset speed n3 and send the third torque request t3 to the engine controller to ensure the vehicle's power and cooling performance. At this time, the system is in the air conditioning load mode. If the vehicle controller detects that the hydraulic system working signal is valid, in order to meet the hydraulic power requirements, the vehicle controller will increase the engine target speed to the fourth preset speed n4 and send the fourth torque request t4 to the engine controller. At this time, the system is in hydraulic load mode.

[0033] Furthermore, when the engine operating conditions need to be adjusted simultaneously based on multiple signals, the vehicle controller follows the speed priority principle, that is, it compares the target speeds n1, n2, n3, and n4 corresponding to each signal, selects the one with the highest value as the final target speed for execution, and sends the corresponding torque request to ensure that the system can meet the most stringent load conditions.

[0034] In an optional embodiment, the vehicle controller is further configured to: determine that the engine start failure occurs if the electric power characteristic of the motor remains at the first electric power characteristic at the end of a preset time period; control the motor to stop running; after a preset interval, control the motor to run again in the first working state to perform a restart operation; receive the number of engine start failures; if the number of engine start failures is determined to be less than a set threshold, perform a restart operation; if the number of engine start failures is determined to be greater than the set threshold, end the start process and output start fault information.

[0035] In a specific embodiment, the vehicle controller continuously monitors the electrical power characteristics of the motor reported by the motor controller and determines the startup result based on preset logic. Specifically, the preset logic determines the startup result as follows: If, within a preset time T1 (e.g., 3 seconds), the vehicle controller detects that the motor's electrical power characteristic changes from the first electrical power characteristic (positive power) to the second electrical power characteristic (negative power), and the motor remains at the second electrical power characteristic, then the vehicle controller determines that the engine has started successfully. If the motor's power characteristic remains at the first power characteristic (i.e., the power is always positive) at the end of the preset time T1, the vehicle controller determines that the engine start has failed and executes the fault handling procedure; the fault handling procedure is as follows: The vehicle controller controls the motor controller to stop the motor from running, thus aborting the current startup process; The vehicle controller records this startup failure and accumulates the number of startup failures; The vehicle controller determines whether the cumulative number of failed starts has reached the system's preset threshold N (e.g., N=3). If the threshold N has not been reached, the start control process is automatically re-executed after waiting for a preset interval T2 (e.g., 10 seconds) to restart. If the threshold N is reached or exceeded, the vehicle controller determines that the start has failed, terminates the entire start process, and outputs start fault information through the instrument panel or on-board diagnostic system to prompt the driver or maintenance personnel to perform maintenance. The start control system will no longer attempt to start automatically and requires manual reset before the start process can be executed again.

[0036] The engine starting control method provided in this application smoothly drags the engine to the target speed by controlling the motor with a large torque and precise speed control mode before injecting fuel and igniting. This effectively overcomes the problems of small starting torque, starting vibration, and difficulty in cold starting of traditional starters, making the starting process smoother and faster. By monitoring the positive and negative changes in the electrical power of the motor controller, i.e., the transition of the motor's operating quadrant from the first quadrant to the fourth quadrant, the system can sensitively and accurately identify the engine's transition from being dragged to being actively driven, thereby achieving accurate judgment of the starting result and avoiding misjudgments that may be caused by relying solely on speed or time. In the event of a starting failure, the system can promptly stop the motor dragging and record the number of failures. It performs a limited number of automatic retries; if the retries still fail after multiple attempts, the startup process is locked and a warning is issued. These protection mechanisms effectively prevent excessive discharge of the power battery caused by invalid continuous dragging, protect high-voltage key components, and improve the safety and robustness of the entire vehicle system. After the engine starts successfully, the vehicle controller can intelligently adjust the target speed and / or torque of the engine based on the power battery's state of charge, real-time vehicle status signals such as the air conditioning and hydraulic system, to ensure that the engine always operates in the high-efficiency range. This allows the hybrid tractor to achieve superior power, fuel economy, and functional performance (such as cooling and hydraulic output) under various loads and operating conditions, thereby keeping the entire machine in its optimal working state. Based on the same inventive concept, embodiments of the present invention also provide a control method suitable for an engine starting control system, see below. Figure 3 As shown in the figure, the interaction flow of the control method for an engine starting control system provided in this embodiment of the invention is as follows: Step 310: After the vehicle is powered on, the vehicle controller is awakened, the start control system enters standby mode, and each controller completes power-on self-test. Step 320: The vehicle controller detects the current status of the motor controller, engine controller and battery management module. If any of them are abnormal, the vehicle controller will prevent the start and record the fault. If all are normal, the start control system will prepare to receive the start signal. Step 330: The vehicle controller continuously monitors the key start signal. If a signal trigger is detected, proceed to step 340; otherwise, remain on standby. Step 340: When the motor controller, engine controller, and battery management module are in normal condition and the key start signal is triggered, the vehicle controller executes the following instructions: It sends an instruction to the motor controller to control the motor controller to enter the speed control mode and sends the preset target start speed; it sends an instruction to the engine controller to enable the engine controller to enter the start mode and prepare to execute fuel injection and intake control; and the generator starts to drive the engine under the control of the motor controller until the engine speed reaches the target start speed. After the speed reaches the target, the motor controller controls the fuel injection and ignition, and the engine starts to output torque. Step 350: The vehicle controller monitors the motor operating status and power characteristics reported by the motor controller and starts a preset timer T1. During the initial towing phase, the motor operates in the first quadrant (positive steering, positive torque), the motor controller power is positive, and it consumes power battery energy. If the engine torque exceeds the motor driving torque, the motor switches to being driven by the engine and operates in the fourth quadrant (positive steering, negative torque). The motor controller power changes from positive to negative, stops consuming power, and starts generating electricity. After time T1, the vehicle controller determines the starting result based on the motor operating quadrant: if the motor is operating in the fourth quadrant, proceed to S360; if it is still operating in the first quadrant, proceed to S370. Step 360: The vehicle controller determines that the engine has started successfully, and the process enters S380 to perform adaptive adjustment of operating conditions. Step 370: The vehicle controller determines that the start-up has failed and immediately controls the motor controller to stop driving. The vehicle controller records the number of failures. If the maximum number of retries set by the system has not been reached, the controller returns to S340 to try to start again after waiting for a preset time interval. If the maximum number of retries is reached within one power-on cycle and the start-up still fails, the vehicle controller ends the start-up process and outputs the start-up fault information. Step 380: After successful engine start, the vehicle controller adjusts the engine target speed and torque based on real-time vehicle status signals. Specifically, if the vehicle controller detects that the battery management module reports a discharge state (or the power battery's state of charge is below a preset threshold), and there is no high-power accessory load, to maintain battery charge, the vehicle controller increases the engine target speed to a first preset speed n1 and sends a first torque request t1 to the engine controller, allowing the engine to operate in a high-efficiency range that can simultaneously drive the vehicle and charge the battery. At this time, the system is in charge-holding mode. If the vehicle controller detects that the battery management module reports a charging state (or the power battery's state of charge is low and there is an active charging requirement), it increases the engine target speed... When the engine reaches the second preset speed n2, it sends a second torque request t2 to the engine controller to increase power generation and quickly replenish battery charge. At this time, the system is in charging priority mode. If the vehicle controller detects that the air conditioning is on, in order to compensate for the power consumption of the air conditioning compressor, the vehicle controller increases the engine target speed to the third preset speed n3 and sends a third torque request t3 to the engine controller to ensure the vehicle's power and cooling performance. At this time, the system is in air conditioning load mode. If the vehicle controller detects that the hydraulic system is working, in order to meet the hydraulic power requirements, the vehicle controller increases the engine target speed to the fourth preset speed n4 and sends a fourth torque request t4 to the engine controller. At this time, the system is in hydraulic load mode.

[0037] This application provides a vehicle including the aforementioned engine start control system.

[0038] This application provides a hybrid tractor, including the engine start control system described above.

[0039] After introducing the engine start control system, vehicle, and hybrid tractor provided in the embodiments of this application, the electronic equipment provided in the embodiments of this application will be briefly introduced next.

[0040] See Figure 4 As shown, the electronic device 500 provided in this application embodiment includes at least a processor 501, a memory 502, and a computer program stored in the memory 502 and executable on the processor 501. When the processor 501 executes the computer program, it implements the control method for the engine start control system provided in this application embodiment.

[0041] The electronic device 500 provided in this application embodiment may further include a bus 503 connecting different components (including processor 501 and memory 502). The bus 503 represents one or more types of bus structures, including memory bus, peripheral bus, local area bus, etc.

[0042] Memory 502 may include a readable storage medium in the form of volatile memory, such as random access memory (RAM) 5021 and / or cache memory 5022, and may further include read-only memory (ROM) 5023. Memory 502 may also include a program tool 5025 having a set (at least one) of program modules 5024, including but not limited to an operating subsystem, one or more application programs, other program modules, and program data, each or some combination of these examples may include an implementation of a network environment.

[0043] Processor 501 can be a single processing element or a collective term for multiple processing elements. For example, processor 501 can be a central processing unit (CPU), or one or more integrated circuits configured to implement the control method for an engine starting control system provided in the embodiments of this application. Specifically, processor 501 can be a general-purpose processor, including but not limited to CPUs, application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc.

[0044] Electronic device 500 can communicate with one or more external devices 504 (e.g., keyboard, remote control, etc.), and also with one or more devices that enable a user to interact with electronic device 500 (e.g., mobile phone, computer, etc.), and / or with devices that enable electronic device 500 to communicate with one or more other electronic devices 500 (e.g., router, modem, etc.). This communication can be performed through input / output (I / O) interface 505. Furthermore, electronic device 500 can also communicate with one or more networks (e.g., local area network (LAN), wide area network (WAN), and / or public networks, such as the Internet) through network adapter 506. Figure 4 As shown, network adapter 506 communicates with other modules of electronic device 500 via bus 503. It should be understood that, although... Figure 4 As not shown, other hardware and / or software modules may be used in conjunction with the electronic device 500, including but not limited to microcode, device drivers, redundant processors, external disk drive arrays, Redundant Arrays of Independent Disks (RAID) subsystems, tape drives, and data backup storage subsystems.

[0045] It should be noted that, Figure 4 The electronic device 500 shown is merely an example and should not impose any limitations on the functionality and scope of use of the embodiments of this application.

[0046] The computer-readable storage medium provided in the embodiments of this application is described below. The computer-readable storage medium provided in the embodiments of this application stores computer instructions, which, when executed by a processor, implement the control method for an engine starting control system provided in the embodiments of this application. Specifically, the computer instructions can be built into or installed in a processor, so that the processor can implement the control method for an engine starting control system provided in the embodiments of this application by executing the built-in or installed computer instructions.

[0047] In addition, the control method for engine start control systems provided in this application embodiment can also be implemented as a computer program product, which includes program code. The program code implements the control method for engine start control systems provided in this application embodiment when it is run on a processor.

[0048] The computer program product provided in this application embodiment may employ one or more computer-readable storage media, which may be, but is not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any suitable combination thereof. Specifically, more specific examples (a non-exhaustive list) of computer-readable storage media include electrical connections with one or more wires, portable disks, hard disks, RAM, ROM, erasable programmable read-only memory (EPROM), optical fibers, portable compact disc read-only memory (CD-ROM), optical storage devices, magnetic storage devices, or any suitable combination thereof.

[0049] The computer program product provided in this application embodiment can be a CD-ROM and include program code, and can also run on electronic devices such as computers. However, the computer program product provided in this application embodiment is not limited thereto. In this application embodiment, the computer-readable storage medium can be any tangible medium that contains or stores program code, which can be used by or in conjunction with an instruction execution system, device, or apparatus.

[0050] It should be noted that although several units or sub-units of the device have been mentioned in the detailed description above, this division is merely exemplary and not mandatory. In fact, according to embodiments of this application, the features and functions of two or more units described above can be embodied in one unit. Conversely, the features and functions of one unit described above can be further divided and embodied by multiple units.

[0051] Furthermore, although the operations of the method of this application are described in a specific order in the accompanying drawings, this does not require or imply that these operations must be performed in that specific order, or that all the operations shown must be performed to achieve the desired result. Additionally or alternatively, certain steps may be omitted, multiple steps may be combined into one step, and / or one step may be broken down into multiple steps.

[0052] Although preferred embodiments of this application have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of this application.

[0053] Obviously, those skilled in the art can make various modifications and variations to the embodiments of this application without departing from the spirit and scope of the embodiments of this application. Therefore, if these modifications and variations to the embodiments of this application fall within the scope of the claims of this application and their equivalents, this application also intends to include these modifications and variations.

Claims

1. An engine start control system characterized by comprising: The vehicle control system comprises: a vehicle controller, a motor controller, an engine controller, a battery management module and a power battery; wherein the vehicle controller is in communication connection with the motor controller, the engine controller and the battery management module respectively; the motor controller is electrically connected with a generator for controlling the operation of the generator; the engine controller is in communication connection with an engine for controlling the fuel injection, air intake and torque output of the engine; the battery management module is in communication connection with the power battery for managing the charging and discharging and state monitoring of the power battery; the vehicle controller is configured to control the motor to run in a first working state to drag the engine in response to a vehicle start signal; wherein the first working state is that the motor outputs positive rotation positive torque; after the engine starts to run, the electric power characteristics of the motor are monitored; if the electric power characteristics of the motor change from a first electric power characteristic to a second electric power characteristic within a preset time length, it is determined that the engine starts successfully; wherein the first electric power characteristic is that the motor is in the first working state and consumes the electric energy of the power battery, and the second electric power characteristic is that the motor is in a second working state and outputs electric energy; the second working state is that the motor outputs positive rotation negative torque; when it is determined that the engine starts successfully, the target speed and / or target torque of the engine are adjusted according to at least one vehicle state signal.

2. The engine start control system according to claim 1, characterized by, The vehicle controller is further configured to: control the motor to enter a speed control mode and drag the engine to a preset target start speed; after receiving that the engine reaches the target start speed, control the engine to inject fuel and ignite.

3. The engine start control system according to claim 1 or 2, characterized by, The electric power characteristics of the motor are determined by the positive and negative of the electric power output by the motor controller; wherein the electric power characteristics include a first electric power characteristic and a second electric power characteristic, the first electric power characteristic is that the motor works in a first quadrant to output positive rotation positive torque and consume electric energy, and the second electric power characteristic is that the motor works in a fourth quadrant to output positive rotation negative torque and output electric energy.

4. The engine start control system of claim 1, wherein The vehicle state signal includes at least one of a power battery state of charge signal, an air conditioner on signal and a hydraulic system working signal.

5. The engine start control system of claim 4, wherein The vehicle controller is further configured to: in response to different vehicle state signals, adjust the target speed of the engine to a corresponding first preset speed, second preset speed or third preset speed respectively, and send a corresponding first torque request, second torque request or third torque request.

6. The engine start control system of claim 1, wherein The vehicle controller is further configured to: if the electric power characteristics of the motor are always in the first electric power characteristics at the end of the preset time length, it is determined that the engine fails to start.

7. The engine start control system of claim 6, wherein The vehicle controller is further configured to: control the motor to stop running; after a preset interval setting time, control the motor to run in the first working state again to perform a restart operation.

8. The engine start control system of claim 7, wherein The vehicle controller is further configured to: receive the number of times that the engine fails to start; if it is determined that the number of times that the engine fails to start does not reach a set number threshold, perform the restart operation; If it is determined that the number of engine start failures reaches a set number threshold, the start procedure is ended and a start failure message is output.

9. A vehicle characterized by comprising: An engine start control system as claimed in any one of claims 1 to 8.

10. A hybrid tractor, characterized by An engine start control system as claimed in any one of claims 1 to 8.

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