Method and device for starting methanol range extender, vehicle and computer storage medium

Abstract

The application discloses a starting method and device of a methanol range extender, a vehicle and a computer storage medium. When a starting instruction for the methanol range extender is detected, the vehicle provided with the methanol range extender acquires water temperature data of a vehicle engine; the drag parameter of the vehicle generator is determined according to the water temperature data, and the rotation speed of the vehicle generator is controlled to be increased according to the drag parameter so as to increase the rotation speed of the vehicle engine; when the rotation speed of the vehicle engine is increased to a preset minimum rotation speed, the vehicle engine is controlled to be ignited by oil injection to start the methanol range extender. The technical scheme can adapt to the methanol fuel characteristics and the air intake port oil injection characteristics, ensure the normal starting of the methanol range extender, and take into account the fuel consumption, pollutant emission and NVH of the vehicle, thereby effectively improving the starting efficiency of the methanol range extender.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of vehicles, in particular to a starting method and device of a methanol range extender, a vehicle and a computer storage medium. BACKGROUND

[0002] Nowadays, the range extended vehicle has developed very quickly because it can solve the range anxiety of consumers and does not depend on charging facilities. Methanol fuel is also valued by major production and design manufacturers due to its clean energy advantage. Based on this background, the methanol range extender has emerged as the times require.

[0003] However, since the starting response speed of the methanol engine is lower than that of the gasoline range extender, and the engine speed needs to be quickly raised when the range extender starts to avoid the resonance zone causing the spline shaft of the motor to break, the methanol range extender adopts the starting strategy of the traditional gasoline range extender, which has poor starting performance and is prone to starting failure. Although the existing method of increasing the fuel injection amount and increasing the generator drag speed is used to control the starting of the methanol range extender, increasing the fuel injection amount will inevitably increase fuel consumption and pollutant emissions, and increasing the generator drag speed will cause the starting NVH (Noise, Vibration, Harshness) of the range extender to deteriorate.

[0004] In summary, the existing method of controlling the starting of the methanol range extender either increases fuel consumption and pollutant emissions or affects the starting NVH of the range extender, thereby resulting in low starting efficiency of the methanol range extender. SUMMARY

[0005] The main purpose of the present application is to provide a starting method and device of a methanol range extender, a vehicle and a computer storage medium, which aims to adapt to the characteristics of methanol fuel and the characteristics of intake port fuel injection to ensure the normal starting of the methanol range extender, and to take into account fuel consumption, pollutant emissions and the NVH of the vehicle, thereby effectively improving the starting efficiency of the methanol range extender.

[0006] To achieve the above-mentioned purpose, the present application provides a starting method of a methanol range extender, which is applied to a vehicle configured with a methanol range extender, and the starting method of the methanol range extender comprises:

[0007] When a starting instruction for the methanol range extender is detected, water temperature data of a vehicle engine is acquired;

[0008] The drag parameters of the vehicle generator are determined according to the water temperature data, and the vehicle generator is controlled to increase the speed according to the drag parameters to drag the vehicle engine to increase the speed;

[0009] controlling the vehicle engine to be ignited by fuel injection when the rotation speed of the vehicle engine is raised to a preset minimum rotation speed.

[0010] Optionally, the drag parameter comprises a target rotation speed of the vehicle engine, the target rotation speed being greater than the preset minimum rotation speed.

[0011] The step of determining the drag parameter of the vehicle engine according to the water temperature data comprises:

[0012] loading a software calibration model of the methanol range extender;

[0013] obtaining a generator drag target rotation speed corresponding to the water temperature data in the software calibration model, and determining the generator drag target rotation speed as the target rotation speed of the vehicle engine.

[0014] Optionally, the step of controlling the vehicle engine to raise the rotation speed according to the drag parameter comprises:

[0015] obtaining fault state information of the vehicle engine, and confirming whether to execute the start instruction according to the fault state information;

[0016] when it is confirmed to execute the start instruction, controlling the vehicle engine to raise the rotation speed to the target rotation speed.

[0017] Optionally, the drag parameter further comprises a maximum drag time of the vehicle engine, and the method further comprises:

[0018] obtaining a maximum drag time of the vehicle engine to maintain the target rotation speed corresponding to the water temperature data in the software calibration model;

[0019] when the rotation speed of the vehicle engine is raised to the target rotation speed, counting a first rotation speed maintenance time of the vehicle engine to maintain the target rotation speed;

[0020] if the first rotation speed maintenance time is less than or equal to the maximum drag time, and a time of the vehicle engine to maintain the idle speed is greater than a preset idle speed maintenance time threshold, it is determined that the methanol range extender is started successfully.

[0021] or,

[0022] if the first rotation speed maintenance time is greater than the maximum drag time, it is determined that the methanol range extender fails to start and the vehicle engine is controlled to end the drag of the vehicle engine.

[0023] Optionally, after the step of controlling the vehicle engine to be ignited by fuel injection to start the methanol range extender, the method further comprises:

[0024] acquiring a second rotation speed maintaining time of the vehicle engine maintaining idle speed;

[0025] if the second rotation speed maintaining time is greater than a preset idle speed maintaining time threshold, determining that the methanol range extender is successfully started.

[0026] Optionally, after the step of detecting whether the rotation speed of the vehicle engine is greater than or equal to the preset minimum rotation speed, the method further comprises:

[0027] if the rotation speed of the vehicle engine is less than idle speed or the second rotation speed maintaining time is less than or equal to the idle speed maintaining time threshold, controlling the vehicle engine to inject and ignite until the vehicle generator stops dragging the vehicle engine;

[0028] if the rotation speed of the vehicle engine is less than idle speed when the vehicle generator stops dragging the vehicle engine, determining that the methanol range extender fails to start and controlling the vehicle engine to stop injecting and igniting.

[0029] Optionally, before the step of acquiring water temperature data of the vehicle engine when detecting a starting instruction for the methanol range extender, the method further comprises:

[0030] monitoring hard-wire signals and bus signals of the vehicle in real time;

[0031] generating a starting instruction for the methanol range extender when confirming to start the range extender according to the hard-wire signals and bus signals.

[0032] In addition, to achieve the above-mentioned purpose, the application further provides a starting device of a methanol range extender, which is applied to a vehicle configured with a methanol range extender, and comprises:

[0033] an acquiring module, configured to acquire water temperature data of a vehicle engine when detecting a starting instruction for the methanol range extender;

[0034] a dragging control module, configured to determine a dragging parameter of a vehicle generator according to the water temperature data, and control the vehicle generator to increase rotation speed to drag the vehicle engine to increase rotation speed according to the dragging parameter;

[0035] a starting module, configured to control the vehicle engine to inject and ignite to start the methanol range extender when the rotation speed of the vehicle engine increases to a preset minimum rotation speed.

[0036] Each functional module of the starting device of the methanol range extender can realize the steps of any one of the above-mentioned starting methods of the methanol range extender when running.

[0037] In addition, to achieve the above object, the application further provides a vehicle, comprising a memory, a processor, and a program of the starting method of the methanol range expander stored in the memory and executable on the processor, wherein the program of the starting method of the methanol range expander, when executed by the processor, can implement the steps of the starting method of the methanol range expander.

[0038] The application further provides a computer storage medium, wherein the computer storage medium stores a program of the starting method of the methanol range expander, and the program of the starting method of the methanol range expander, when executed by a processor, implements the steps of the starting method of the methanol range expander.

[0039] In addition, to achieve the above object, the application further provides a computer program product, comprising a computer program, wherein the computer program, when executed by a processor, implements the steps of the starting method of the methanol range expander.

[0040] The application provides a starting method of a methanol range expander, a device, a vehicle, and a computer storage medium. When a vehicle configured with the methanol range expander detects a starting instruction for the methanol range expander, the vehicle obtains water temperature data of an engine of the vehicle. The vehicle determines a drag parameter of a generator of the vehicle according to the water temperature data, and controls the generator to increase the speed to drag the engine to increase the speed according to the drag parameter. When the speed of the engine increases to a preset minimum speed, the vehicle controls the engine to inject fuel and ignite to start the methanol range expander.

[0041] Thus, the application determines a drag parameter of a generator of a vehicle to increase the speed to drag an engine of the vehicle according to water temperature data of the engine obtained by the vehicle, drags the engine to increase the speed based on the drag parameter, and then controls the engine to inject fuel and ignite to start a methanol range expander of the vehicle when the speed of the engine increases to a preset minimum speed (a minimum speed that exceeds a resonance zone causing the breakage of a spline shaft of the generator).

[0042] That is, compared with a conventional method of starting a methanol range expander, the technical solution of the application controls a generator of a vehicle to drag an engine of the vehicle according to the hydrological condition of the engine, thereby starting the methanol range expander, and realizes the premise of adapting to the characteristics of methanol fuel and the characteristics of intake port fuel injection to ensure the normal starting of the methanol range expander, while taking into account fuel consumption, pollutant emission, and NVH of the vehicle, thereby effectively improving the starting efficiency of the methanol range expander. BRIEF DESCRIPTION OF DRAWINGS

[0043] The accompanying drawings, which are incorporated into and form a part of the specification, illustrate one embodiment consistent with the application and, together with the description, serve to explain the principles of the application.

[0044] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the accompanying drawings needed to be used in the embodiments or prior art description will be briefly introduced as follows. Obviously, the drawings are only for the purpose of illustrating the embodiments of the present application, and for the person of ordinary skill in the art, other drawings can also be obtained without creative labor.

[0045] Figure 1 The flowchart of the first embodiment of the starting method of the methanol range extender of the present application;

[0046] Figure 2 The control architecture diagram of the methanol range extender related to an embodiment of the starting method of the methanol range extender of the present application;

[0047] Figure 3 The software calibration model MAP diagram (ignition control curve diagram) of the generator drag target speed, the longest drag time and the engine water temperature related to an embodiment of the starting method of the methanol range extender of the present application;

[0048] Figure 4 The starting control strategy diagram of the methanol range extender related to an embodiment of the starting method of the methanol range extender of the present application;

[0049] Figure 5 The structure diagram of the functional module related to an embodiment of the starting device of the methanol range extender of the present application;

[0050] Figure 6 The device structure diagram of the hardware running environment related to the vehicle in the embodiment scheme of the present application.

[0051] The purpose implementation, functional features and advantages of the present application will be further described with reference to the accompanying drawings in combination with the embodiments. DETAILED DESCRIPTION

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

[0053] It should be noted that nowadays, the range extender vehicle has developed very quickly based on its ability to solve the consumer's range anxiety and not dependent on charging facilities. Methanol fuel has also been valued by major production and design manufacturers due to its clean energy advantage. Based on this background, the methanol range extender has emerged.

[0054] However, since the starting response speed of the methanol engine is lower than that of the gasoline range extender, and the engine speed needs to be quickly raised when the range extender starts to avoid the resonance region causing the spline shaft of the motor to break, the methanol range extender adopts the starting strategy of the traditional gasoline range extender, which has poor starting performance and is prone to starting failure. Although the existing method increases the fuel injection amount and increases the generator drag speed to control the starting of the methanol range extender, increasing the fuel injection amount will inevitably increase fuel consumption and pollutant emissions, and increasing the generator drag speed will cause the starting NVH of the range extender to deteriorate.

[0055] In summary, the existing method of controlling the starting of the methanol range extender either increases fuel consumption and pollutant emissions or affects the starting NVH of the range extender, thereby resulting in low starting efficiency of the methanol range extender.

[0056] Based on the above phenomenon, the present application provides a starting method of a methanol range extender. When a vehicle equipped with a methanol range extender detects a starting instruction for the methanol range extender, the vehicle obtains water temperature data of the vehicle engine. According to the water temperature data, the drag parameters of the vehicle generator are determined, and the vehicle generator is controlled to increase the speed according to the drag parameters to drag the vehicle engine to increase the speed. When the speed of the vehicle engine is increased to a preset minimum speed, the vehicle engine is controlled to inject fuel and ignite to start the methanol range extender.

[0057] In an embodiment of the starting method of the methanol range extender of the present application, the vehicle obtains the water temperature data of the vehicle engine to determine the drag parameters of the vehicle generator for controlling the vehicle generator to increase the speed to drag the vehicle engine, thereby dragging the vehicle engine to increase the speed based on the drag parameters, and then controlling the vehicle engine to inject fuel and ignite to start the vehicle methanol range extender when the speed of the vehicle engine is increased to a preset minimum speed (the minimum speed of the resonance region causing the spline shaft of the motor to break).

[0058] That is, compared with the traditional method of controlling the starting of the methanol range extender, the technical solution of the present application controls the vehicle generator to drag the vehicle engine according to the hydrological conditions of the vehicle engine, thereby controlling the starting of the methanol range extender, and achieving the premise of adapting to the characteristics of methanol fuel and the characteristics of intake port fuel injection to ensure the normal starting of the methanol range extender, while taking into account fuel consumption, pollutant emissions, and the NVH of the vehicle, thereby effectively improving the starting efficiency of the methanol range extender.

[0059] Based on the overall concept of the starting method of the methanol range extender of the present application, the first embodiment of the starting method of the methanol range extender of the present application is proposed.

[0060] Please refer to Figure 1 , Figure 1This is a flowchart illustrating the first embodiment of the start-up method for the methanol range extender of this application. It should be noted that although the logical order is shown in the flowchart, in some cases, the steps shown or described may be performed in a different order than that shown here.

[0061] Furthermore, in this embodiment, the executing entity of the methanol range extender starting method of this application can be the vehicle itself. Of course, the executing entity of the methanol range extender starting method of this application can also be a data processing terminal integrated into the vehicle or a terminal device connected to the vehicle. For ease of explanation and reading comprehension, the following text will use the vehicle as the executing entity to describe the first embodiment of the methanol range extender starting method of this application.

[0062] like Figure 1 As shown, in the first embodiment of the methanol range extender startup method of this application, the startup method specifically includes the following steps:

[0063] Step S10: When a start command for the methanol range extender is detected, the coolant temperature data of the vehicle engine is acquired.

[0064] In this embodiment, during real-time operation, the vehicle equipped with a methanol range extender continuously detects whether a start command for the methanol range extender is generated. When the vehicle detects the start command, it immediately obtains the engine coolant temperature data from the vehicle's internal CAN (Controller Area Network).

[0065] Step S20: Determine the driving parameters of the vehicle generator based on the water temperature data, and control the vehicle generator to increase its speed according to the driving parameters to drive the vehicle engine to increase its speed.

[0066] In this embodiment, after the vehicle obtains the water temperature data of the vehicle engine, it immediately loads a pre-set software calibration model to determine the drag parameters for controlling the vehicle generator to increase its speed to drive the vehicle engine based on the water temperature data. Furthermore, it controls the vehicle generator to increase its speed in a short period of time according to the drag parameters, thereby driving the vehicle engine to increase its speed.

[0067] Step S30: When the speed of the vehicle engine increases to a preset minimum speed, control the vehicle engine to inject fuel and ignite to start the methanol range extender.

[0068] In the embodiment, after the vehicle controls the vehicle generator to increase the rotating speed to drag the vehicle engine, the vehicle starts to detect the rotating speed of the vehicle engine, so that when the vehicle detects that the rotating speed of the vehicle engine has increased to the preset minimum rotating speed which is beyond the resonance zone causing the motor spline shaft to break, the vehicle immediately controls the vehicle engine to spray and ignite to start the methanol range extender.

[0069] It should be noted that in the embodiment, the preset minimum rotating speed can be set to 500 rpm. It should be understood that based on different design needs of actual applications, if different types of range extender products are used, the preset minimum rotating speed can of course be set to other different sizes of calibration. Therefore, the starting method of the methanol range extender of the present application is not limited to the specific size of the preset minimum rotating speed.

[0070] In the embodiment, the vehicle configured with the methanol range extender continuously detects whether a starting instruction for the methanol range extender is generated during real-time operation, so that when the vehicle detects the starting instruction, the vehicle immediately obtains the water temperature data of the vehicle engine from the internal CAN (Controller Area Network) network of the vehicle. After obtaining the water temperature data of the vehicle engine, the vehicle immediately loads a pre-set software calibration model to determine the drag parameter for the current control of the vehicle generator to increase the rotating speed to drag the vehicle engine according to the water temperature data, and further controls the vehicle generator to increase its rotating speed in a short time according to the drag parameter to drag the vehicle engine to increase the rotating speed. After the vehicle controls the vehicle generator to increase the rotating speed to drag the vehicle engine, the vehicle starts to detect the rotating speed of the vehicle engine, so that when the vehicle detects that the rotating speed of the vehicle engine has increased to the preset minimum rotating speed which is beyond the resonance zone causing the motor spline shaft to break, the vehicle immediately controls the vehicle engine to spray and ignite to start the methanol range extender.

[0071] In this way, compared with the conventional method of controlling the starting of the methanol range extender, the technical scheme of the present application controls the vehicle generator to drag the vehicle engine according to the water condition of the vehicle engine to control the starting of the methanol range extender, which realizes the premise of adapting to the characteristics of methanol fuel and the characteristics of intake port injection to ensure the normal starting of the methanol range extender, and takes into account the fuel consumption, pollutant emission and NVH of the vehicle, thereby effectively improving the starting efficiency of the methanol range extender.

[0072] Further, based on the first embodiment of the starting method of the methanol range extender of the present application, a second embodiment of the starting method of the methanol range extender of the present application is proposed.

[0073] In the embodiment, before the step S10, when the start instruction for the methanol range extender is detected, the method for starting the methanol range extender further comprises:

[0074] Real-time monitoring the hard-wire signals and bus signals of the vehicle;

[0075] When it is confirmed that the range extender needs to be started according to the hard-wire signals and bus signals, generating a start instruction for the methanol range extender.

[0076] In the embodiment, during the starting operation of the vehicle, the vehicle control unit configured by itself can monitor the hard-wire signals and bus signals of the vehicle in real time through the external public CAN network and / or the internal CAN network, and further confirm whether the range extender needs to be started at present based on the hard-wire signals and bus signals. Thus, when it is confirmed that the range extender needs to be started at present, the vehicle control unit generates a start instruction for the methanol range extender configured by the vehicle. Therefore, the vehicle can continue the process of the step S10 to acquire the water temperature data of the engine of the vehicle when the start instruction for the methanol range extender is detected, and perform the subsequent other steps to start the methanol range extender.

[0077] Exemplarily, as shown in Figure 2 The vehicle control unit (VCU) configured by the vehicle communicates with the battery management system (BMS) of the vehicle through the external public CAN network, and communicates with the engine management system (EMS) and the generator controller (GCU) of the vehicle through the internal CAN network. Thus, the vehicle control unit (VCU) can receive the bus signals such as the remaining power SOC, the remaining oil, the vehicle fault signal, the generator fault signal, the engine fault signal and / or the hard-wire signals such as the range extender start, uploaded on the external public CAN network and / or the internal CAN network, by the battery management system (BMS), the engine management system (EMS) and / or the generator controller (GCU). Further, the vehicle control unit (VCU) can determine whether the range extender needs to be started at present by the hard-wire signals and bus signals, and immediately generate a start instruction for the methanol range extender configured by the vehicle when it is determined that the range extender needs to be started at present.

[0078] It should be noted that in the present embodiment, the vehicle controller (VCU) of the vehicle can determine whether the range extender needs to be started based on the vehicle state represented by the bus signals such as the remaining SOC, the remaining fuel amount, the vehicle fault signal, the generator fault signal, the engine fault signal, and / or the hard-wired signals such as the range extender start. For example, the vehicle controller (VCU) can immediately determine that the range extender needs to be started when it receives the hard-wired signal of the range extender start triggered by the vehicle driver. Alternatively, the vehicle controller (VCU) can also determine that the range extender needs to be started when it receives the bus signals of the remaining SOC and the remaining fuel amount to determine that the current remaining SOC of the vehicle is low but the remaining fuel amount is relatively sufficient.

[0079] In the present embodiment, the vehicle can monitor the hard-wired signals and the bus signals of the vehicle in real time through the vehicle controller configured by the vehicle through the external public CAN network and / or the internal CAN network, and further determine whether the range extender needs to be started based on the hard-wired signals and the bus signals. In this way, when the vehicle determines that the range extender needs to be started, it immediately generates a start instruction for the methanol range extender configured by the vehicle. Thus, the vehicle can continue to perform the process of step S10 to obtain the water temperature data of the engine of the vehicle when the start instruction for the methanol range extender is detected, and perform subsequent other steps to start the methanol range extender.

[0080] In this way, compared with the existing method of increasing the methanol injection amount to start the methanol range extender, the technical solution of the present application only involves modifying the software control strategy of the vehicle controller, the generator controller, and the engine management system of the vehicle, so that the technical solution of the present application for starting the methanol range extender is easy to be applied to a platform.

[0081] Further, based on the first embodiment and / or the second embodiment of the starting method of the methanol range extender, a third embodiment of the starting method of the methanol range extender is proposed.

[0082] In the present embodiment, the drag parameter of the vehicle generator dragging the vehicle engine includes a target speed of the vehicle generator, wherein the target speed is greater than the preset minimum speed of the resonance zone that causes the motor spline shaft to break. Based on this, the step of determining the drag parameter of the vehicle generator according to the water temperature data in step S20 can include:

[0083] loading a software calibration model of the methanol range extender;

[0084] obtaining the corresponding generator drag target speed of the water temperature data in the software calibration model, and determining the generator drag target speed as the target speed of the vehicle generator.

[0085] In the embodiment, when the vehicle determines the drag parameter of the vehicle generator dragging the vehicle engine based on the water temperature data of the vehicle engine, the vehicle first loads a software calibration model previously set for controlling the starting of the vehicle methanol range extender, so that in the software calibration model, the water temperature data of the vehicle engine is used to obtain the corresponding generator drag target speed in the software calibration model, and then the generator drag target speed is determined as the target speed that the vehicle generator needs to reach to drag the vehicle engine to the target speed for increasing the speed of the vehicle engine.

[0086] For example, as shown in Figure 3 , the vehicle loads a software calibration model previously set for controlling the starting of the vehicle methanol range extender, so as to determine the generator drag target speed n corresponding to the water temperature data T in the model based on the current water temperature data of the vehicle engine, and determine the generator drag target speed n as the target speed that the vehicle generator needs to reach.

[0087] Optionally, in a possible embodiment, the step of "controlling the vehicle generator to increase the speed according to the drag parameter" in the step S20 can include:

[0088] obtaining the fault state information of the vehicle generator, and determining whether to execute the starting instruction according to the fault state information;

[0089] when it is determined to execute the starting instruction, controlling the vehicle generator to increase the speed to the target speed.

[0090] In the embodiment, after the vehicle determines that the range extender needs to be started at the current time through the vehicle controller and generates the starting instruction for the methanol range extender, the vehicle further transmits the starting instruction to the generator controller of the vehicle through the vehicle controller, so that the vehicle can obtain the fault state information of the vehicle generator at the current time through the generator controller, and determine to execute the starting instruction transmitted by the vehicle controller when it is determined that the vehicle generator has no fault at the current time. Furthermore, the vehicle can control the vehicle generator to increase the speed of the vehicle generator to the target speed in a short time through the generator controller.

[0091] For example, as shown in Figure 4As shown, after the vehicle determines that the range extender needs to be started at present through the vehicle control unit (VCU) and generates a starting instruction for the methanol range extender, the vehicle further transmits the starting instruction to the generator controller (GCU) of the vehicle through the vehicle control unit (VCU). After receiving the starting instruction, the generator controller (GCU) immediately acquires the current fault state information of the vehicle generator (CISG) according to the communication between the generator controller (GCU) and the vehicle generator (CISG), and further determines whether to execute the starting instruction according to the fault state information. If yes, the generator controller (GCU) controls the vehicle generator (CISG) to rapidly increase the speed from 0 to the target speed n. Moreover, in the process of increasing the speed of the vehicle generator (CISG) to drag the vehicle engine (Engine), the vehicle generator (CISG) continuously monitors whether the target speed n is reached. If not, the speed continues to be rapidly increased. If yes, the generator controller (GCU) controls the vehicle generator (CISG) to maintain the speed at the target speed n.

[0092] Optionally, in a possible embodiment, the dragging parameter of the vehicle generator to drag the vehicle engine further includes a longest dragging time of the vehicle generator. Based on this, the starting method of the methanol range extender provided in the present application can further include:

[0093] acquiring the longest dragging time of the vehicle generator to maintain the target speed in the software calibration model corresponding to the water temperature data;

[0094] when the speed of the vehicle engine is increased to the target speed, counting a first speed maintenance time of the vehicle generator to maintain the target speed;

[0095] if the first speed maintenance time is greater than a preset idle speed maintenance time threshold and less than or equal to the longest dragging time, it is determined that the starting of the methanol range extender is successful;

[0096] or,

[0097] if the first speed maintenance time is greater than the longest dragging time, it is determined that the starting of the methanol range extender is failed and the vehicle generator is controlled to end the dragging of the vehicle engine.

[0098] In the present embodiment, when the software calibration model is loaded, the generator dragging target speed corresponding to the water temperature data of the vehicle engine is acquired in the software calibration model, and when it is determined that the vehicle generator needs to be controlled to reach the target speed to drag the vehicle engine to increase the speed, the longest dragging time of the vehicle generator to maintain the target speed corresponding to the water temperature data in the software calibration model is also acquired in the software calibration model synchronously or asynchronously.

[0099] Then, the vehicle starts to count a first speed maintaining time of the vehicle generator maintaining the self speed at the target speed as soon as the vehicle generator starts to increase the self speed to the target speed. After that, the vehicle detects the size between the first speed maintaining time and the longest drag time determined from the software calibration model, and detects the size between the first speed maintaining time and the preset idle speed maintaining time threshold.

[0100] In this way, when the vehicle detects that the first speed maintaining time is greater than the preset idle speed maintaining time threshold and the first speed maintaining time is less than or equal to the longest drag time, the vehicle determines that the current vehicle engine has completed the fuel injection ignition to successfully start the methanol range extender configured by the vehicle. Or, when the vehicle detects that the first speed maintaining time has been greater than the longest drag time, the vehicle determines that the current vehicle engine has not completed the fuel injection ignition, which leads to the failure of the methanol range extender of the vehicle, and then the vehicle controls the vehicle generator to end the dragging of the vehicle engine.

[0101] It should be noted that in the embodiment, the idle speed maintaining time threshold is a preset minimum maintaining time of the speed of the vehicle engine maintaining at idle speed (and above), which is used to represent the normal operation of the vehicle engine after completing the fuel injection ignition operation. In the embodiment, it is assumed that the idle speed maintaining time threshold is specifically 200 ms. It should be understood that the idle speed maintaining time threshold can of course be set to different sizes in different feasible embodiments based on different design needs of actual applications, and therefore the starting method of the methanol range extender of the present application is not limited to the specific size of the idle speed maintaining time threshold.

[0102] In addition, as shown in Figure 4 the vehicle controller also sends the starting instruction to the engine management system, so that the engine management system can control the vehicle engine to perform the fuel injection operation to start the methanol range extender configured by the vehicle as soon as it detects that the speed of the vehicle engine has increased to the preset minimum speed that exceeds the resonance zone during the process of the vehicle generator dragging the vehicle engine to increase the speed.

[0103] Exemplarily, as shown in Figure 4As shown, the vehicle maintains the first speed maintaining time of the vehicle generator (CISG) maintaining the target speed n by the generator controller (GCU) controlling the vehicle generator (CISG), and further determines whether the first speed maintaining time reaches the corresponding longest dragging time t of the current water temperature data of the vehicle engine in the software calibration model. Thus, if the first speed maintaining time is within the longest dragging time t, i.e., the first speed maintaining time is less than the longest dragging time t, and the current speed of the vehicle engine is not less than the idle speed (the specific size can be designed based on different actual application needs) and the maintaining time is greater than the idle speed maintaining time threshold 200 ms, the vehicle determines that the vehicle engine has completed the fuel injection ignition operation at present and successfully started the methanol range extender configured by the vehicle, and at the same time, the generator controller (GCU) controls the vehicle generator (CISG) to end the dragging of the vehicle engine. Otherwise, the vehicle determines that the start of the methanol range extender fails, and at the same time, the generator controller (GCU) controls the generator (CISG) to end the dragging of the vehicle engine.

[0104] In the embodiment, the technical scheme of the present application controls the methanol range extender starting dragging target speed and maintaining time according to the engine water temperature, without the need to additionally increase the methanol injection amount and improve the speed of the vehicle generator, so that the technical scheme of the present application can greatly reduce the fuel consumption and emission pollutants of the methanol range extender starting condition, cancel the particulate filter (GPF) in the aftertreatment system on the premise of reducing the noble metal content of the range extender aftertreatment system, and greatly reduce the cost of the range extender aftertreatment system; and can also improve the starting NVH performance of the methanol range extender and make it comparable to the market gasoline range extender.

[0105] Further, based on the first embodiment, the second embodiment and / or the third embodiment of the starting method of the methanol range extender, a fourth embodiment of the starting method of the methanol range extender is proposed.

[0106] In the embodiment, after the step of "controlling the vehicle engine fuel injection ignition" described above, the starting method of the methanol range extender can further include:

[0107] statistically maintaining the second speed maintaining time of the vehicle engine maintaining the idle speed;

[0108] If the second speed maintaining time is greater than the preset idle speed maintaining time threshold, it is determined that the methanol range extender is started successfully.

[0109] In the present embodiment, after the terminal device detects that the rotation speed of the vehicle engine has been raised to the preset minimum rotation speed that is over the resonance region, and controls the vehicle engine to perform the fuel injection ignition, the vehicle further detects a second rotation speed maintaining time during which the vehicle engine maintains the rotation speed at the idle speed (or above), and further detects whether the second rotation speed maintaining time is greater than the idle speed maintaining time threshold. Thus, when the vehicle detects that the second rotation speed maintaining time is greater than the idle speed maintaining time threshold, the vehicle determines that the methanol range extender has been successfully started at present.

[0110] Optionally, in a feasible embodiment, after the step of "controlling the vehicle engine to perform the fuel injection ignition", the methanol range extender starting method of the present application can further include:

[0111] If the rotation speed of the vehicle engine is less than the idle speed or the second rotation speed maintaining time is less than or equal to the idle speed maintaining time threshold, the vehicle engine is controlled to perform the fuel injection ignition until the vehicle generator stops dragging the vehicle engine;

[0112] If the rotation speed of the vehicle engine is less than the idle speed when the vehicle generator stops dragging the vehicle engine, it is determined that the methanol range extender starting fails and the vehicle engine is controlled to stop the fuel injection ignition.

[0113] In the present embodiment, after the terminal device detects that the rotation speed of the vehicle engine has been raised to the preset minimum rotation speed that is over the resonance region, and controls the vehicle engine to perform the fuel injection ignition, if the vehicle detects that the rotation speed of the vehicle engine is still less than the idle speed, or the second rotation speed maintaining time during which the vehicle engine maintains the rotation speed at the idle speed (or above) is less than or equal to the idle speed maintaining time threshold, the vehicle determines that the operation of controlling the vehicle engine to perform the fuel injection ignition has not successfully started the methanol range extender, and thus the vehicle continues to control the vehicle engine to perform the fuel injection ignition operation for the methanol range extender starting again or multiple times in the process of continuing to drag the vehicle engine by the vehicle generator to maintain the rotation speed of the vehicle engine at the preset minimum rotation speed.

[0114] Otherwise, when the vehicle generator stops dragging the vehicle engine because the rotation speed of the vehicle generator has maintained for the longest dragging time in the software calibration model, if the vehicle detects that the rotation speed of the vehicle engine is still less than the idle speed at this time, the vehicle determines that the methanol range extender starting has failed at present, and the vehicle will simultaneously control the vehicle engine to stop the fuel injection ignition operation.

[0115] In addition, the present application also provides a methanol range extender starting device, which comprises Figure 5As shown, the starting device of the methanol range extender in the application is applied to a vehicle configured with the methanol range extender. The starting device of the methanol range extender in the application comprises:

[0116] The acquisition module 10 is configured to acquire water temperature data of the vehicle engine when a starting instruction for the methanol range extender is detected;

[0117] The drag control module 20 is configured to determine a drag parameter of the vehicle generator according to the water temperature data, and control the vehicle generator to increase the speed to drag the vehicle engine to increase the speed according to the drag parameter;

[0118] The starting module 30 is configured to control the vehicle engine to spray and ignite when the speed of the vehicle engine is increased to a preset minimum speed, so as to start the methanol range extender.

[0119] Optionally, the drag parameter comprises a target speed of the vehicle generator, and the target speed is greater than the preset minimum speed;

[0120] The drag control module 20 comprises:

[0121] The model loading unit is configured to load a software calibration model of the methanol range extender;

[0122] The first parameter determination unit is configured to acquire a generator drag target speed corresponding to the water temperature data in the software calibration model, and determine the generator drag target speed as the target speed of the vehicle generator.

[0123] Optionally, the drag control module 20 further comprises:

[0124] The fault detection unit is configured to acquire fault state information of the vehicle generator, and confirm whether to execute the starting instruction according to the fault state information;

[0125] The drag unit is configured to control the vehicle generator to increase the speed to the target speed when it is confirmed to execute the starting instruction.

[0126] Optionally, the drag parameter further comprises a longest drag time of the vehicle engine;

[0127] The drag control module 20 is further configured to acquire a longest drag time of the vehicle generator maintaining the target rotating speed corresponding to the water temperature data in the software calibration model; acquire a first rotating speed maintaining time of the vehicle generator maintaining the target rotating speed when the rotating speed of the vehicle engine is raised to the target rotating speed; if the first rotating speed maintaining time is less than or equal to the longest drag time, and a time of the vehicle engine maintaining the idle speed is greater than a preset idle speed maintaining time threshold, determine that the methanol range extender is started successfully; or if the first rotating speed maintaining time is greater than the longest drag time, determine that the methanol range extender is started unsuccessfully and control the vehicle generator to end the dragging of the vehicle engine.

[0128] Optionally, the drag control module 20 is further configured to acquire a second rotating speed maintaining time of the vehicle engine maintaining the idle speed; and if the second rotating speed maintaining time is greater than the preset idle speed maintaining time threshold, determine that the methanol range extender is started successfully.

[0129] Optionally, the drag control module 20 is further configured to, if the rotating speed of the vehicle engine is less than the idle speed or the second rotating speed maintaining time is less than or equal to the idle speed maintaining time threshold, control the vehicle engine to inject and ignite until the vehicle generator ends the dragging of the vehicle engine.

[0130] If the rotating speed of the vehicle engine is less than the idle speed when the vehicle generator ends the dragging of the vehicle engine, it is determined that the methanol range extender is started unsuccessfully and the vehicle engine is controlled to stop injecting and igniting.

[0131] Optionally, the methanol range extender starting device provided in the application further comprises:

[0132] A starting judgment module is configured to monitor the hard-wire signal and the bus signal of the vehicle in real time; and generate a starting instruction for the methanol range extender when it is confirmed to start the range extender according to the hard-wire signal and the bus signal.

[0133] The specific implementation of the methanol range extender starting device provided in the application is basically the same as that of the above-mentioned methanol range extender starting method, and will not be described here.

[0134] In addition, the embodiments of the application also provide a vehicle as mentioned in any of the above-mentioned embodiments.

[0135] Reference Figure 6 , Figure 6 is a device structure schematic diagram of a hardware running environment involved in the vehicle mentioned in the embodiments of the application.

[0136] As Figure 6As shown, the vehicle can include a processor 1001, such as a CPU, a memory 1005, and a communication bus 1002. The communication bus 1002 is used to realize the connection communication between the processor 1001 and the memory 1005. The memory 1005 can be a high-speed RAM memory, or a stable memory (non-volatile memory), such as a disk memory. The memory 1005 can also be a storage device independent of the aforementioned processor 1001.

[0137] Optionally, the vehicle further includes a methanol range extender, a vehicle control unit (VCU), a battery management system (BMS), an engine management system (EMS), and a generator controller (GCU). The vehicle control unit (VCU) communicates with the battery management system (BMS) and the like through an external public CAN, and communicates with the engine management system (EMS) and the generator controller (GCU) through an internal CAN. In addition, the vehicle can also include a body controller BCM, an ECU, a rectangular user interface, a network interface, a camera, an RF (Radio Frequency, RF) circuit, a sensor, an audio circuit, a WiFi module, and the like. The rectangular user interface can include a display screen (Display) and an input sub-module such as a keyboard (Keyboard). Optionally, the rectangular user interface can also include a standard wired interface and a wireless interface. The network interface can optionally include a standard wired interface and a wireless interface (such as a WI-FI interface). The vehicle is also connected to a remote service platform TSP through a T-BOX.

[0138] Those skilled in the art can understand that Figure 6 The structure shown in the figure does not constitute a limitation on the vehicle. Based on different design needs of actual applications, among different feasible embodiments, the vehicle can of course include more or fewer components than the figure, or combine certain components, or different component arrangements.

[0139] As Figure 4 As shown, the memory 1005 as a storage medium can include an operating system, a network communication module, and a methanol range extender startup program. The operating system is a program that manages and controls the hardware and software resources based on the vehicle, supports the startup program of the methanol range extender, and runs other software and / or programs. The network communication module is used to realize the communication between the components in the memory 1005, and the communication between other hardware and software in the methanol range extender startup device.

[0140] In Figure 6 As shown in the vehicle, the processor 1001 is used to execute the methanol range extender startup program stored in the memory 1005, to realize the steps of the methanol range extender startup method described in any of the embodiments.

[0141] The specific embodiments of the vehicle of the present application are basically the same as the above-mentioned embodiments of the starting method of the methanol range extender, and thus will not be described herein.

[0142] In addition, the embodiments of the present application further provide a computer storage medium, and the computer storage medium stores one or more programs, and the one or more programs are further executable by one or more processors to implement the steps of the above-mentioned starting method of the methanol range extender.

[0143] The specific embodiments of the computer storage medium of the present application are basically the same as the above-mentioned embodiments of the starting method of the methanol range extender, and thus will not be described herein.

[0144] In addition, the present application further provides a computer program product, including a computer program, which is executed by a processor to implement the steps of the above-mentioned starting method of the methanol range extender.

[0145] The specific embodiments of the computer program product of the present application are basically the same as the above-mentioned embodiments of the starting method of the methanol range extender, and thus will not be described herein.

[0146] It should be noted that, in this document, the terms "comprising", "including", or any other variant thereof are intended to cover non-exclusive inclusion, so that processes, methods, articles, or devices including a series of elements not only include those elements, but also include other elements not explicitly listed, or further include inherent elements of such processes, methods, articles, or devices. Without more limitations, the element defined by the statement "including a" does not exclude the presence of additional identical elements in the process, method, article, or device including the element.

[0147] The serial numbers of the above-mentioned embodiments of the present application are only for description, and do not represent the advantages or disadvantages of the embodiments.

[0148] From the above description of the embodiments, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of software plus a necessary general hardware platform, and of course, they can also be implemented by hardware, but in many cases, the former is a better embodiment. Based on such understanding, the technical solutions of the present application can be embodied in the form of a software product, which is stored in a storage medium (such as a ROM / RAM, a magnetic disk, or an optical disk), and includes a plurality of instructions for causing a terminal device (which can be a vehicle-mounted computer, a smart phone, a computer, or a server) to execute the methods described in the various embodiments of the present application.

[0149] The above merely preferred embodiments of the present application and are not intended to limit the patent scope of the present application, any equivalent structure or equivalent process transformation made by using the content of the present application specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A method of starting a methanol range extender, characterized by, The starting method of the methanol range extender is applied to a vehicle provided with the methanol range extender, and the starting method of the methanol range extender comprises the following steps: Real-time monitoring of hard-wire signals and bus signals of the vehicle; the bus signals include a remaining power amount SOC, a remaining oil amount, a vehicle fault signal, a generator fault signal and an engine fault signal; the hard-wire signals include a methanol range extender starting signal; When it is confirmed to start the range extender according to the hard-wire signals and the bus signals, a starting instruction for the methanol range extender is generated; When the starting instruction for the methanol range extender is detected, water temperature data of the vehicle engine is acquired; According to the water temperature data, a drag parameter of the vehicle generator is determined, and the vehicle generator is controlled to increase the speed according to the drag parameter to drag the vehicle engine to increase the speed; When the speed of the vehicle engine is increased to a preset minimum speed that is higher than a resonance zone causing a motor spline shaft to break, the vehicle engine is controlled to spray oil and ignite to start the methanol range extender; The drag parameter includes a target speed of the vehicle generator, and the step of determining the drag parameter of the vehicle generator according to the water temperature data comprises the following steps: Loading a software calibration model of the methanol range extender; Acquiring a generator drag target speed corresponding to the water temperature data in the software calibration model, and determining the generator drag target speed as the target speed of the vehicle generator, wherein the target speed is greater than the preset minimum speed; After the step of controlling the vehicle engine to spray oil and ignite to start the methanol range extender, the method further comprises the following steps: Counting a second speed maintenance time during which the vehicle engine maintains an idle speed; If the second speed maintenance time is greater than a preset idle speed maintenance time threshold, it is determined that the methanol range extender is started successfully; If the speed of the vehicle engine is less than the idle speed or the second speed maintenance time is less than or equal to the idle speed maintenance time threshold, the engine is controlled to spray oil and ignite again or multiple times to start the methanol range extender in the process of continuously dragging the vehicle engine by the vehicle generator to maintain the speed of the vehicle engine at the preset minimum speed; If the speed of the vehicle engine is less than the idle speed when the vehicle generator ends the dragging of the vehicle engine, it is determined that the methanol range extender fails to start and the vehicle engine is controlled to stop spraying oil and igniting.

2. The method of starting a methanol range extender of claim 1, wherein, The step of controlling the vehicle generator to increase the speed according to the drag parameter comprises the following steps: Acquiring fault state information of the vehicle generator, and determining whether to execute the starting instruction according to the fault state information; When it is determined to execute the starting instruction, the speed of the vehicle generator is controlled to increase to the target speed.

3. The method of starting a methanol range extender of claim 2, wherein, The drag parameter further includes a longest drag time of the vehicle engine, and the method further comprises the following steps: Acquiring a longest drag time of the vehicle generator to maintain the target speed corresponding to the water temperature data in the software calibration model; When the speed of the vehicle engine is increased to the target speed, a first speed maintenance time during which the vehicle generator maintains the target speed is counted; If the first rotation speed maintaining time is less than or equal to the longest dragging time, and the time for which the vehicle engine maintains idle speed is greater than a preset idle speed maintaining time threshold, it is determined that the methanol range extender is successfully started. Or, If the first rotation speed maintaining time is greater than the longest dragging time, it is determined that the methanol range extender fails to start, and the vehicle generator is controlled to end dragging the vehicle engine.

4. A starting device for a methanol range extender, characterized in that The starting device of the methanol range extender is applied to a vehicle configured with a methanol range extender, and is used to implement the method according to any one of claims 1-3. The starting device of the methanol range extender comprises: The acquisition module is configured to acquire water temperature data of the vehicle engine when a starting instruction for the methanol range extender is detected. The dragging control module is configured to determine a dragging parameter of the vehicle generator according to the water temperature data, and control the vehicle generator to increase rotation speed to drag the vehicle engine to increase rotation speed according to the dragging parameter. The starting module is configured to control the vehicle engine to inject and ignite fuel to start the methanol range extender when the rotation speed of the vehicle engine is increased to a preset minimum rotation speed that is greater than a resonance zone causing motor spline shaft fracture. The dragging control module is further configured to load a software calibration model of the methanol range extender, acquire a generator dragging target rotation speed corresponding to the water temperature data in the software calibration model, and determine the generator dragging target rotation speed as the target rotation speed of the vehicle generator. The acquisition module is further configured to monitor hard-wire signals and bus signals of the vehicle in real time.

5. A vehicle characterized by comprising: The vehicle comprises a memory, a processor, and a program stored in the memory and used to implement the starting method of the methanol range extender. The memory is used to store the program used to implement the starting method of the methanol range extender. The processor is used to execute the program used to implement the starting method of the methanol range extender to implement the steps of the starting method of the methanol range extender according to any one of claims 1-3.

6. A computer storage medium, characterized in that, The computer storage medium stores the program used to implement the starting method of the methanol range extender, and the program is executed by the processor to implement the steps of the starting method of the methanol range extender according to any one of claims 1-3.

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