Vehicle starting control method and device, electronic equipment and vehicle

Abstract

The invention relates to a vehicle starting control method and device, electronic equipment and a vehicle. The vehicle starting control method comprises the steps that a vehicle is controlled to run in a rapid starting mode; calculating a first torque of an engine required to meet a vehicle starting condition in the rapid starting mode; when the brake release signal is received, the engine is controlled to output first torque, and meanwhile the clutch is controlled to be engaged to a first engagement process; under the condition that the brake loosening duration is smaller than the set starting duration and an accelerator opening signal is received, the vehicle is controlled to execute the rapid starting action; and under the condition that the accelerator opening signal is not received and the brake loosening duration is longer than or equal to the set starting duration, the vehicle is controlled to execute the automatic starting action. According to the vehicle starting control method, after the brake is released, the engine is controlled to output the first torque immediately, the clutch is controlled to be engaged immediately, the starting speed of the automatic transmission vehicle is effectively increased, and the automatic transmission vehicle can meet the application requirement for multi-scene rapid starting.

Description

Technical Field

[0001] The present application relates to the technical field of vehicle starting control, and in particular to a vehicle starting control method, a control device, an electronic device and a vehicle. Background Art

[0002] In daily vehicle use, there are scenarios where a vehicle needs to start quickly. For example, when some roads are congested or there is a traffic jam, or when encountering traffic lights, potholes, slopes, mountain roads, etc., there is a great demand for the vehicle to start quickly.

[0003] In the related technology, the starting of automatic transmission (AMT) vehicles is mainly for comfort, the clutch engages slowly, and when the driver steps on the accelerator, the transmission starts to control the engine, output torque, increase the speed, and the vehicle starts to move. The driver of a manual transmission vehicle can step on the clutch in advance, and the clutch, foot brake, and hand brake are operated simultaneously to achieve a quick start. Therefore, the starting speed of an automatic transmission vehicle is slower than that of a manual transmission vehicle, and cannot meet the application requirements of quick starting in multiple scenarios. Summary of the invention

[0004] Based on this, it is necessary to provide a vehicle starting control method, control device, electronic device and vehicle to address the problem that automatic transmission vehicles cannot meet the application requirements of quick starting in multiple scenarios.

[0005] In a first aspect, the present application provides a vehicle starting control method, comprising:

[0006] Control the vehicle to run in quick start mode;

[0007] Calculating a first torque of the engine required to meet a vehicle starting condition in a quick start mode;

[0008] When a brake release signal is received, the engine is controlled to output a first torque, and the clutch is controlled to engage to a first engagement process;

[0009] When the brake release time is less than the set start time and the throttle-on signal is received, the vehicle is controlled to perform a quick start action; when the throttle-on signal is not received and the brake release time is greater than or equal to the set start time, the vehicle is controlled to perform an automatic start action.

[0010] In some embodiments, the controlling the vehicle to perform a quick start action includes:

[0011] Get throttle opening information;

[0012] Calculating a second torque of the engine required to meet a vehicle quick start condition and a third torque of the engine corresponding to the throttle opening, wherein the second torque is greater than the first torque;

[0013] When the third torque is greater than the second torque, the engine is controlled to output the third torque and the clutch is controlled to engage to the second engagement process; when the third torque is less than or equal to the second torque, the engine is controlled to output the second torque and the clutch is controlled to engage to the second engagement process.

[0014] In some embodiments, the simultaneously controlling the clutch to engage to the second engagement process includes:

[0015] Get the instantaneous torque of the engine at the current moment;

[0016] According to the instantaneous torque of the engine at the current moment, the clutch engagement process size at the next moment after the set time interval is controlled;

[0017] When the clutch is not engaged in the second engagement process, the process returns to the step of obtaining the instantaneous torque of the engine at the current moment, until the clutch is engaged in the second engagement process.

[0018] In some embodiments, the first torque is set to 15% to 30% of the maximum reference torque of the engine, and the second torque is set to 30% to 40% of the maximum reference torque of the engine;

[0019] And / or, the first engagement process is set to 20% to 40% of the full engagement process of the clutch, and the second engagement process is set to 40% to 60% of the full engagement process of the clutch.

[0020] In some embodiments, the calculating of the first torque of the engine required to meet the vehicle starting condition in the quick start mode includes:

[0021] Obtain the vehicle's slope information, load information, and speed ratio information;

[0022] The first torque of the engine is calculated according to the slope information, load information and speed ratio information of the vehicle.

[0023] In some embodiments, before controlling the vehicle to run the fast start mode, the method further includes:

[0024] Determine that the vehicle is in a start-up preparation state and whether a quick start mode start signal has been received;

[0025] When a quick start mode start signal is received, the vehicle is controlled to run in the quick start mode; when no quick start mode start signal is received, the vehicle is controlled to run in the normal start mode.

[0026] In some embodiments, the quick start mode activation signal includes at least one of the following: a switch-on signal; a voice recognition signal; a gesture recognition signal; a brake opening greater than a preset opening signal.

[0027] In a second aspect, the present application provides a vehicle starting control device, the vehicle starting control device comprising:

[0028] A control module, used for controlling the vehicle to operate in a quick start mode;

[0029] A calculation module, used for calculating a first torque of the engine required to meet a vehicle starting condition in a quick start mode;

[0030] A receiving module, used for receiving a brake release signal and a throttle opening signal;

[0031] The control module is also used to control the engine to output a first torque when a brake release signal is received, and to control the clutch to engage to a first engagement process, and to control the vehicle to perform a quick start action when the brake release time is less than a set start time and a throttle opening signal is received, and to control the vehicle to perform an automatic start action when no throttle opening signal is received and the brake release time is greater than or equal to the set start time.

[0032] In a third aspect, the present application provides an electronic device, including a memory and a processor, wherein the memory stores a computer program, and when the processor executes the computer program, the following steps are implemented:

[0033] Control the vehicle to run in quick start mode;

[0034] Calculating a first torque of the engine required to meet a vehicle starting condition in a quick start mode;

[0035] When a brake release signal is received, the engine is controlled to output a first torque, and the clutch is controlled to engage to a first engagement process;

[0036] When the brake release time is less than the set start time and the throttle-on signal is received, the vehicle is controlled to perform a quick start action; when the throttle-on signal is not received and the brake release time is greater than or equal to the set start time, the vehicle is controlled to perform an automatic start action.

[0037] In a fourth aspect, the present application provides a vehicle, the vehicle comprising the electronic device as in the embodiment of the third aspect; or the vehicle comprising the vehicle starting control device as in the embodiment of the second aspect.

[0038] The vehicle start control method, control device, electronic device and vehicle set the quick start mode, after releasing the brake, control the engine to immediately output the first torque, and control the clutch to engage immediately, which can speed up the clutch engagement speed, save starting time, and thus improve the starting speed of the automatic transmission vehicle; and when the driver steps on the accelerator to intervene, the vehicle can start quickly, further speeding up the vehicle starting speed, which is conducive to achieving the effect that the starting speed of the automatic transmission vehicle can be comparable to that of the manual transmission vehicle. When the driver does not step on the accelerator to intervene, the vehicle can start automatically and the vehicle starts smoothly. In this way, the vehicle includes two starting stages, so that the automatic transmission vehicle can meet the application requirements of quick starting in multiple scenarios. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] FIG. 1 is a schematic flow chart of a vehicle starting control method in some embodiments of the present application.

[0040] FIG. 2 is a structural block diagram of a vehicle starting control device in some embodiments of the present application.

[0041] FIG. 3 is a schematic diagram of the internal structure of an electronic device in some embodiments of the present application. DETAILED DESCRIPTION

[0042] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0043] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application.

[0044] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, "plurality" means at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0045] As shown in FIG1 , an embodiment of the present application provides a vehicle starting control method. The vehicle starting control method comprises the following steps:

[0046] Step S100, controlling the vehicle to run in a quick start mode;

[0047] Step S200, calculating a first torque of the engine required to meet a vehicle starting condition in a quick start mode;

[0048] Step S300, when a brake release signal is received, controlling the engine to output a first torque and controlling the clutch to engage to a first engagement process;

[0049] Step S400, when the brake release time is less than the set start time and the throttle opening signal is received, the vehicle is controlled to perform a quick start action; when the throttle opening signal is not received and the brake release time is greater than or equal to the set start time, the vehicle is controlled to perform an automatic start action.

[0050] In this embodiment, the vehicle may be a vehicle provided with an AMT (Automated-Mechanical-Transmission). In order to improve the vehicle's starting ability and speed up the starting speed, the vehicle may be provided with a quick start mode, and the quick start mode may be applied in scenarios where the AMT vehicle needs to start quickly. In some embodiments, the vehicle may be provided with an automatic transmission control unit (Transmission Control Unit, TCU), and the vehicle may be controlled to run in a quick start mode by the TCU. The vehicle may also be provided with a vehicle control unit (VCU), and the vehicle may be controlled to run in a quick start mode by the VCU. After the vehicle runs in the quick start mode, the first torque of the engine required to meet the vehicle starting conditions in the quick start mode is first calculated. It can be understood that during the vehicle starting process, the power output by the engine needs to at least overcome the resistance of the current vehicle starting. For example, the first torque can be made to reach 20% of the maximum reference torque of the engine.

[0051] The process of the driver releasing the brake makes the vehicle about to move and releases the brake restriction condition. At this time, the initial conditions for the vehicle to start automatically and quickly are met. For example, the brake can be a foot brake. By using the release of the brake as a judgment condition, after the brake is released, the TCU immediately sends a control torque signal to control the engine to output the first torque, and the actual torque of the engine quickly follows, and the engine speed is quickly increased, thereby increasing the power of the engine. In other words, the output torque of the engine increases in a step-like manner. By controlling the engine torque and then increasing the engine speed, the rapid start based on the control of the engine torque request has better stability and responsiveness than controlling the engine idle signal (600 revolutions per minute), and is also better than directly controlling the engine speed signal. In some embodiments, in the process of controlling the engine to output the first torque, PID (Proportional-Integral-Derivative) regulation can be used to prevent the output torque of the engine from overshooting too much.

[0052] At the same time, during the vehicle starting process, the clutch is engaged, and the vehicle transmits the power output by the engine through the clutch. The clutch engagement process, that is, the clutch engagement depth, refers to the stroke that the clutch passes through when it moves from the disengaged position to the engaged position. After releasing the brake, the clutch is immediately controlled to engage to the first engagement process. Among them, the first engagement process refers to the clutch engagement process required to meet the vehicle starting conditions. For example, the first engagement process can reach 25% of the clutch's full engagement process. The clutch engagement process is affected by the engine power. Due to the step-wise increase in the engine power, the clutch can be quickly engaged to the first engagement process. In this way, by controlling the clutch to engage in advance, the clutch engagement speed can be accelerated, the clutch can be quickly engaged, and the torque can be quickly transmitted to the transmission, bridge, shaft, etc., so as to meet the vehicle's rapid starting power conditions, thereby accelerating the vehicle's starting speed.

[0053] The brake release time refers to the length of time that has passed after the brake release signal is received. The set start time refers to the preset maximum start time of the vehicle in the quick start mode. In some embodiments, the set start time can be set in the range of 0.8 seconds to 1.2 seconds, that is, the maximum start time of the vehicle in the quick start mode ranges from 0.8 seconds to 1.2 seconds. For example, the set start time can be 1 second. At the same time, it is determined whether the driver presses the accelerator within the set start time after releasing the brake, that is, whether the accelerator opening signal is received, so as to determine whether the driver intends to further accelerate the start.

[0054] After releasing the brake in the quick start mode, the TCU records the brake release time and compares the brake release time with the set start time. If the vehicle has no throttle opening signal intervention, it means that the driver has no intention to further accelerate the start. In this case, the automatic start action is performed after the set start time is reached, so that the vehicle can drive on its own. If the driver steps on the accelerator before the set start time is reached, it means that the driver has the intention to further accelerate the start. In this case, the vehicle performs a quick start action after the throttle opening signal intervenes, which can obtain greater torque to meet the faster starting ability, and can achieve the "gas and go" state that the driver wants, so that the starting speed of the automatic transmission vehicle is not slower than the starting speed of the vehicle operated by an experienced manual transmission driver.

[0055] After the vehicle performs a quick start or an automatic start, the vehicle begins to move and the clutch continues to engage quickly. As the accelerator pedal continues to intervene, the engine output torque continues to increase and the vehicle speed gradually increases. When the transmission input shaft speed is synchronized with the engine output shaft speed, the clutch stops engaging. At this moment, the clutch is fully engaged and the vehicle start is complete.

[0056] The vehicle starting control method of the embodiment of the present application sets a quick start mode. After the brake is released, the engine is controlled to output the first torque immediately, and the clutch is controlled to engage immediately, which can speed up the clutch engagement speed, save starting time, and thus improve the starting speed of the automatic transmission vehicle; and when the driver steps on the accelerator to intervene, the vehicle can start quickly, further speeding up the vehicle starting speed, which is conducive to achieving the effect that the starting speed of the automatic transmission vehicle can be comparable to that of the manual transmission vehicle. When the driver does not step on the accelerator to intervene, the vehicle can start automatically and the vehicle starts smoothly. In this way, the vehicle includes two starting stages, so that the automatic transmission vehicle can meet the application requirements of fast starting in multiple scenarios.

[0057] In some embodiments, controlling the vehicle to perform a quick start action includes the following steps:

[0058] Step S410, obtaining throttle opening information;

[0059] Step S420, calculating a second torque of the engine required to meet the vehicle quick start condition and a third torque of the engine corresponding to the throttle opening, wherein the second torque is greater than the first torque;

[0060] Step S430, when the third torque is greater than the second torque, control the engine to output the third torque and control the clutch to engage to the second engagement process; when the third torque is less than or equal to the second torque, control the engine to output the second torque and control the clutch to engage to the second engagement process.

[0061] When the vehicle performs a quick start action, the second torque of the engine required to meet the vehicle quick start condition is first calculated. At the same time, the throttle opening information of the driver stepping on the accelerator is obtained, and the throttle opening information is the throttle opening size. After obtaining the throttle opening information, the third torque of the engine corresponding to the throttle opening is calculated. Among them, the engine can output a third torque of corresponding size in response to the throttle opening size, and the corresponding relationship between the third torque and the throttle opening size can be calibrated by experiment. After obtaining the third torque of the engine corresponding to the throttle opening, it is compared with the obtained second torque; if the driver steps on the accelerator deeply, so that the third torque is greater than the second torque, the engine outputs the third torque at this time; if the driver steps on the accelerator lightly, so that the third torque is less than or equal to the second torque, the engine outputs the second torque at this time. In other words, the second torque is the minimum value of the engine output torque when the vehicle performs a quick start action, that is, the second torque is used to meet the lower limit capacity of the vehicle's quick start. Since the second torque is greater than the first torque, the starting speed of the vehicle when performing the quick start action is greater than the starting speed of the vehicle when it starts automatically, thereby further accelerating the starting speed of the vehicle. For example, the second torque can reach 35% of the maximum reference torque of the engine.

[0062] During the process of the vehicle's quick start, the clutch is controlled to engage to the second engagement process, which is greater than the first engagement process. For example, the second engagement process can reach 45% of the clutch's full engagement process. In this way, a larger torque can be transmitted through the clutch, which speeds up the transmission of torque to the transmission, bridge, shaft, etc., so that the vehicle has the power conditions for quick start, and the vehicle's starting speed is further accelerated.

[0063] By setting the second torque to meet the lower limit of the vehicle's quick starting capability and comparing the third torque corresponding to the throttle opening with the second torque, the vehicle's quick starting capability after throttle intervention can be met, thereby further accelerating the vehicle's starting speed.

[0064] In some embodiments, simultaneously controlling the clutch to engage to the second engagement process includes the following steps:

[0065] Step S431, obtaining the instantaneous torque of the engine at the current moment;

[0066] Step S432, controlling the clutch engagement process size at the next moment after a set time interval according to the instantaneous torque of the engine at the current moment;

[0067] Step S433, when the clutch is not engaged in the second engagement process, return to step S431 of obtaining the instantaneous torque of the engine at the current moment; until the clutch is engaged in the second engagement process.

[0068] During the clutch engagement process, the clutch engagement depends on the engine power, that is, there is a corresponding relationship between the clutch engagement process and the engine power. The engine power is determined by the actual torque of the engine, and the instantaneous power and instantaneous torque of the engine during the start-up process conform to the law of the engine external characteristic curve. In some embodiments, the torque output by the actual engine depends on the engine smoke limit curve. The engine smoke limit curve refers to the actual torque change curve output by the actual engine limited by smoke emissions. Among them, the engine smoke limit curve can be obtained through experiments. The corresponding relationship between the clutch engagement process and the engine torque can be calibrated by experiment, and then the clutch engagement process corresponding to the instantaneous torque of the engine can be determined by querying the corresponding relationship between the clutch engagement process and the engine torque.

[0069] The set time interval refers to the time interval between two adjacent engagement actions in the process of controlling the clutch to engage. It can be understood that the clutch engagement speed can be adjusted by adjusting the value of the set time interval. In some embodiments, the set time interval can be set to 0.03 seconds to 0.05 seconds, for example, the set time interval can be 0.05 seconds. In some embodiments, by adjusting the set time interval, the total engagement time of the clutch can be within a preset time range, for example, the clutch engagement speed is controlled to achieve 40-60% of the full engagement process within 1 second; this is conducive to speeding up the clutch engagement speed and further speeding up the vehicle starting speed.

[0070] When the clutch is ready to be controlled to engage at the current moment, the instantaneous torque of the engine at the current moment is obtained, for example, by collecting the instantaneous torque signal emitted by the engine.

[0071] In some embodiments, according to the instantaneous torque of the engine at the current moment, controlling the engagement process size of the clutch at the next moment after the set time interval may include the following steps: according to the corresponding relationship between the engagement process of the clutch and the torque of the engine, determining the target engagement process of the clutch corresponding to the instantaneous torque of the engine at the current moment. Comparing the current engagement process of the clutch with the target engagement process determined at the current moment; if the current engagement process is greater than or equal to the target engagement process determined at the current moment, it means that the power of the engine does not meet the requirements for further engagement of the clutch, and the engagement of the clutch is suspended at this time, waiting, so that the engagement process of the clutch remains unchanged until the next moment after the set time interval; if the current engagement process is less than the target engagement process determined at the current moment, it means that the power of the engine meets the requirements for further engagement of the clutch, and the clutch is controlled to continue to engage, so that the clutch is engaged to the target engagement process determined at the current moment, so that at the next moment after the set time interval, the engagement process of the clutch is equal to the target engagement process determined at the current moment; in this way, the engagement process size of the clutch at the next moment after the set time interval is controlled.

[0072] In some embodiments, according to the instantaneous torque of the engine at the current moment, controlling the engagement process size of the clutch at the next moment after the set time interval may include the following steps: according to the instantaneous torque of the engine at the current moment, predicting the instantaneous torque that the engine can reach at the next moment after the set time interval; then determining the expected engagement process of the clutch at the next moment according to the corresponding relationship between the engagement process of the clutch and the torque of the engine. Compare the current engagement process of the clutch with the expected engagement process of the clutch at the next moment; if the current engagement process is greater than or equal to the expected engagement process at the next moment, it means that the requirement for further engagement of the clutch is not met, and the engagement of the clutch is suspended at this time to wait; if the current engagement process is less than the expected engagement process at the next moment, it means that the clutch can be further engaged, and the clutch is controlled to engage to the expected engagement process at the next moment; in this way, the engagement process size of the clutch at the next moment after the set time interval is controlled. For example, if the instantaneous torque of the engine at the next moment is only 30% of the maximum reference torque of the engine, which does not meet the requirement for further engagement of the clutch, the engagement of the clutch is suspended and waited; until it is predicted that the instantaneous torque of the engine at the next moment rises to 35% or more, the clutch is controlled to continue to engage. For example, based on the engine smoke limit curve, the linear interpolation method can be used to predict the instantaneous torque that the engine can reach at the next moment after a set time interval according to the instantaneous torque of the engine at the current moment. By predicting the instantaneous torque of the engine at the next moment, the clutch can be controlled to engage in advance, which can further speed up the clutch engagement speed, achieve fast clutch engagement, and then speed up the transmission of torque to the transmission, bridge, shaft, etc., to meet the conditions for fast starting and transmission, and speed up the vehicle starting speed.

[0073] At the next moment after the set time interval, the above steps S431 to S432 are repeated until the clutch is engaged in the second engagement process.

[0074] By controlling the clutch engagement process at the next moment after a set time interval based on the instantaneous torque of the engine at the current moment, it is helpful to speed up the clutch engagement speed while taking into account the smoothness of the clutch engagement, which in turn helps to speed up the vehicle starting speed while taking into account the smoothness and stability of the vehicle starting.

[0075] In some embodiments, calculating the first torque of the engine required to meet the vehicle starting condition in the fast start mode includes the following steps:

[0076] Step S210, obtaining the slope information, load information and speed ratio information of the vehicle;

[0077] Step S220, calculate the first torque of the engine according to the slope information, load information and speed ratio information of the vehicle. The vehicle can be provided with a variety of detection devices, and the whole vehicle status information of the current vehicle is collected through the various detection devices. The whole vehicle status information of the vehicle may include but is not limited to the slope information, load information, speed ratio information, etc. of the vehicle. The various detection devices can be connected to the TCU for communication, so that the TCU can obtain the slope information, load information and speed ratio information of the vehicle. Among them, the slope information of the vehicle refers to the slope information of the location of the vehicle, for example, the slope of the vehicle on flat ground is 0. The load information of the vehicle refers to the load condition of the vehicle, for example, it can be divided into no load, light load and heavy load according to the load condition of the vehicle. The speed ratio information of the vehicle refers to the gear position information of the transmission of the vehicle, for example, the vehicle is in first gear, second gear, third gear, etc.

[0078] According to the vehicle's slope information, load information and speed ratio information, the vehicle resistance encountered when the vehicle starts can be calculated, and then the vehicle power required when the vehicle starts in the quick start mode can be calculated comprehensively, and then the first torque of the engine can be calculated based on the vehicle power required when the vehicle starts in the quick start mode. In this way, the first torque of the engine is calculated and determined according to the vehicle's whole vehicle state to ensure that during the vehicle starting process, the power output by the engine can overcome the vehicle starting resistance and meet the vehicle starting power conditions.

[0079] In some embodiments, the first torque is set to 15% to 30% of the maximum reference torque of the engine.

[0080] The maximum reference torque of the engine conforms to the law of the engine external characteristic curve. The maximum reference torque of the engine can be obtained by querying the engine external characteristic curve, or by obtaining the maximum reference torque signal sent by the engine control unit to determine the maximum reference torque of the engine. The corresponding relationship between the engine speed and torque conforms to the law of the engine external characteristic curve. In the starting stage, the higher the engine speed, the greater the engine torque. For example, the first torque can reach 20% of the maximum reference torque of the engine. In some embodiments, the engine speed range corresponding to the first torque can be 1000 revolutions per minute (r / min) to 1500 revolutions per minute.

[0081] By setting the first torque to be greater than or equal to 15% of the maximum reference torque of the engine, the lower limit of the vehicle starting power condition in the fast start mode can be met, and the condition of early clutch engagement can be met, the clutch engagement time can be reduced, and the vehicle starting speed can be effectively improved. At the same time, by setting the first torque to be less than or equal to 30% of the maximum reference torque of the engine, the engine speed is prevented from being too high when starting, and the vehicle inertia is prevented from being too large and causing safety hazards. In this way, by setting the lower limit and upper limit of the first torque of the engine, it is beneficial to improve the vehicle starting speed while taking into account the vehicle starting safety. In some embodiments, the corresponding relationship between the slope information, load information and speed ratio information of the vehicle and the lower limit and upper limit of the first torque of the engine can be predetermined. For example, the corresponding relationship between the slope information, load information and speed ratio information of the vehicle and the lower limit and upper limit of the first torque of the engine can be calibrated by experiment. In this way, after obtaining the actual slope information, load information and speed ratio information of the vehicle, the actual first torque of the engine can be calculated according to the corresponding relationship between the slope information, load information and speed ratio information of the vehicle and the lower limit and upper limit of the first torque of the engine.

[0082] Taking the lower limit of the first torque as 16% of the maximum reference torque of the engine and the upper limit of the first torque as 30% of the maximum reference torque of the engine as an example, the first torque of the engine is calculated according to the slope information, load information and speed ratio information of the vehicle, which may specifically include the following steps:

[0083] The initial value M0 of the first torque is calculated according to the vehicle load information. For example, according to test calibration, the initial value M0 of the first torque when the vehicle is unloaded is 20% of the maximum reference torque of the engine, and the initial value M0 of the first torque when the vehicle is fully loaded is 30% of the maximum reference torque of the engine. When the vehicle is in other load conditions, the initial value M0 of the first torque can be calculated by a linear interpolation method.

[0084] The slope coefficient a of the first torque is calculated according to the slope information of the vehicle. For example, according to test calibration, the slope coefficient a of the first torque is 0.9 when the vehicle is on flat ground, the slope coefficient a of the first torque is 1 when the vehicle is on a 5% slope, and the slope coefficient a of the first torque can be calculated by a linear interpolation method when the vehicle is on other slopes.

[0085] The speed ratio coefficient n of the first torque is calculated according to the speed ratio information of the vehicle. For example, according to test calibration, the speed ratio coefficient n of the first torque is 0.9 when the vehicle starts in the first gear, the speed ratio coefficient n of the first torque is 0.95 when the vehicle starts in the second gear, and the speed ratio coefficient n of the first torque is 1 when the vehicle starts in the third gear. When the vehicle starts in other speed ratios, the speed ratio coefficient n of the first torque can be calculated by a linear interpolation method.

[0086] The comprehensive calculation of the first torque M1 of the engine satisfies: M1=a×b×M0.

[0087] In some embodiments, the set time interval may be calculated based on the slope information, load information, and speed ratio information of the vehicle. By calculating the set time interval, the clutch engagement speed is comprehensively calculated.

[0088] Taking the minimum time interval as 0.03 seconds and the maximum time interval as 0.05 seconds as an example, the time interval t may be calculated based on the slope information, load information and speed ratio information of the vehicle, and may specifically include the following steps:

[0089] The initial value t0 of the set time interval is calculated based on the vehicle's speed ratio information. For example, according to test calibration, the initial value t0 of the set time interval when the vehicle starts in the first gear is 0.035 seconds, the initial value t0 of the set time interval when the vehicle starts in the second gear is 0.044 seconds, and the initial value t0 of the set time interval when the vehicle starts in the third gear is 0.05 seconds. When the vehicle starts in other speed ratios, the initial value t0 of the set time interval can be calculated using a linear interpolation method.

[0090] The load factor g of the set time interval is calculated based on the vehicle load information. For example, according to test calibration, the load factor g of the set time interval is 0.95 when the vehicle is unloaded, and the load factor g of the set time interval is 1 when the vehicle is fully loaded. When the vehicle is in other load conditions, the load factor g of the set time interval can be calculated using a linear interpolation method.

[0091] The slope coefficient c of the set time interval is calculated based on the slope information of the vehicle. For example, according to the test calibration, the slope coefficient c of the set time interval is 0.95 when the vehicle is on flat ground, the slope coefficient c of the set time interval is 1 when the vehicle is on a 5% slope, and the slope coefficient c of the set time interval can be calculated by linear interpolation method when the vehicle is on other slopes.

[0092] The comprehensive calculation of the set time interval t when the clutch is engaged satisfies: t=g×c×t0.

[0093] In some embodiments, the second torque is set to 30% to 40% of the maximum reference torque of the engine.

[0094] By setting the second torque to be greater than or equal to 30% of the maximum reference torque of the engine, the lower limit of the power condition for the vehicle to perform a quick start action in the quick start mode can be met, effectively improving the vehicle's starting speed. At the same time, by setting the second torque to be less than or equal to 40% of the maximum reference torque of the engine, the engine speed is prevented from being too high during starting, and the vehicle inertia is prevented from being too large, which may cause safety hazards. In this way, by setting the lower and upper limits of the second torque of the engine, it is beneficial to further improve the vehicle's starting speed while taking into account the vehicle's starting safety.

[0095] The calculation method of the second torque may be the same as the calculation method of the first torque, which will not be described in detail herein.

[0096] In some embodiments, the first engagement range is set to 20% to 40% of the full engagement range of the clutch.

[0097] For example, the first engagement process can reach 25% of the full engagement process of the clutch. By setting the first engagement process to be greater than or equal to 20% of the full engagement process of the clutch, the starting torque can be transmitted to the transmission, bridge, shaft, etc. faster, which is conducive to accelerating the starting speed of the vehicle. At the same time, by setting the first engagement process to be less than or equal to 40% of the full engagement process of the clutch, it is possible to avoid the situation where the vehicle starts with a setback, shaking or even stalling due to excessive clutch engagement process, while taking into account the smoothness and stability of the vehicle start.

[0098] In some embodiments, the second engagement range is set to 40% to 60% of the full engagement range of the clutch.

[0099] For example, the second engagement process can reach 50% of the full engagement process of the clutch. By setting the second engagement process to be greater than or equal to 40% of the full engagement process of the clutch, the starting torque can be further accelerated to the transmission, bridge, shaft, etc., thereby further accelerating the vehicle starting speed. At the same time, by setting the second engagement process to be less than or equal to 60% of the full engagement process of the clutch, it is helpful to reduce the situation of vehicle starting frustration, shaking or even flameout caused by excessive clutch engagement process, while taking into account the smoothness and stability of the vehicle starting.

[0100] In some embodiments, before controlling the vehicle to run the fast start mode, the following steps are also included:

[0101] Step S110, determining that the vehicle is in a start preparation state, and determining whether a quick start mode start signal is received;

[0102] Step S120, when a quick start mode start signal is received, the vehicle is controlled to run in the quick start mode; when no quick start mode start signal is received, the vehicle is controlled to run in the normal start mode.

[0103] After starting the vehicle, the preparatory actions before the vehicle starts may include the following actions: releasing the handbrake; stepping on the footbrake; engaging the gear. The vehicle's starting mode depends on the driver's intention and operation. To determine whether the driver has a quick start intention, the quick start mode can be triggered according to the quick start mode start signal released by the driver's operation.

[0104] If the quick start mode activation signal is not received, it means that the driver has no intention of quick start, and the vehicle is running in normal start mode. In normal start mode, after the driver completes the preparatory actions such as releasing the handbrake, stepping on the footbrake, and engaging the gear, the vehicle is ready to start and waits for the driver's operation.

[0105] If the quick start mode start signal is received, it means that the driver wants to start quickly. The vehicle receives the quick start mode start signal and switches to quick start mode. The vehicle starts to start automatically, and when the driver steps on the accelerator to intervene, the vehicle will start quickly.

[0106] In some embodiments, the quick start mode activation signal includes at least one of the following: a switch-on signal; a voice recognition signal; a gesture recognition signal; a brake opening greater than a preset opening signal.

[0107] If the driver wants to start quickly, the quick start mode can be triggered by different triggering methods. Among them, the quick start mode can be triggered by a switch signal, and the vehicle can be provided with a trigger switch, such as a hard-wired switch, a button switch, etc. The quick start mode start signal can also be triggered by stepping on the brake pedal so that the brake opening is greater than the preset opening. For example, the preset opening can be 90% of the maximum brake opening. When the brake pedal is opened to the bottom, the quick start mode start signal is triggered. Wake-up functions such as voice recognition and gesture recognition can also be used to switch the quick start mode through voice and gesture recognition. The vehicle control unit (VCU) of the vehicle can receive these signals and convert them to the automatic transmission control unit (TCU), thereby controlling the vehicle to run the quick start mode.

[0108] It should be understood that, although the various steps in the flowcharts involved in the above-mentioned embodiments are displayed in sequence according to the indication of the arrows, these steps are not necessarily executed in sequence according to the order indicated by the arrows. Unless there is a clear explanation in this article, the execution of these steps does not have a strict order restriction, and these steps can be executed in other orders. Moreover, at least a part of the steps in the flowcharts involved in the above-mentioned embodiments can include multiple steps or multiple stages, and these steps or stages are not necessarily executed at the same time, but can be executed at different times, and the execution order of these steps or stages is not necessarily to be carried out in sequence, but can be executed in turn or alternately with other steps or at least a part of the steps or stages in other steps.

[0109] Based on the same inventive concept, the embodiment of the present application also provides a vehicle start control device for implementing the vehicle start control method involved above. The implementation scheme for solving the problem provided by the device is similar to the implementation scheme recorded in the above method, so the specific limitations in one or more vehicle start control device embodiments provided below can refer to the limitations of the vehicle start control method above, and will not be repeated here.

[0110] As shown in FIG2 , an embodiment of the present application provides a vehicle starting control device, including a control module, a calculation module and a receiving module. The control module is used to control the vehicle to run a quick start mode. The receiving module is used to receive a brake release signal and a throttle opening signal. The calculation module is used to calculate the first torque of the engine required to meet the vehicle starting condition in the quick start mode. The control module is also used to control the engine to output the first torque when receiving the brake release signal, and control the clutch to engage to the first engagement process at the same time, and control the vehicle to perform a quick start action when the brake release time is less than the set start time and the throttle opening signal is received, and control the vehicle to perform an automatic start action when the throttle opening signal is not received and the brake release time is greater than or equal to the set start time.

[0111] In some embodiments, the vehicle starting control device further includes an acquisition module. The acquisition module is used to acquire throttle opening information. The calculation module is also used to calculate the second torque output by the engine required for the vehicle to start quickly, and the third torque output by the engine corresponding to the throttle opening, wherein the second torque is greater than the first torque. The control module is also used to control the engine to output the third torque when the third torque is greater than the second torque, and control the clutch to engage to full engagement; when the third torque is less than or equal to the second torque, control the engine to output the second torque, and control the clutch to engage to full engagement.

[0112] Each module in the above vehicle starting control device can be implemented in whole or in part by software, hardware or a combination thereof. Each module can be embedded in or independent of a processor in an electronic device in the form of hardware, or can be stored in a memory in the electronic device in the form of software, so that the processor can call and execute operations corresponding to each module.

[0113] The embodiment of the present application also provides an electronic device, which may be a terminal, and its internal structure diagram may be shown in FIG3. The electronic device may include a processor, a memory, an input / output interface, a communication interface, a display unit, and an input device. Among them, the processor, the memory, and the input / output interface are connected through a system bus, and the communication interface, the display unit, and the input device are connected to the system bus through the input / output interface. Among them, the processor of the electronic device is used to provide computing and control capabilities. The memory of the electronic device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the operation of the operating system and the computer program in the non-volatile storage medium. The input / output interface of the electronic device is used to exchange information between the processor and the external device. The communication interface of the electronic device is used to communicate with an external terminal in a wired or wireless manner, and the wireless manner can be implemented through WIFI, a mobile cellular network, NFC (near field communication) or other technologies. When the computer program is executed by the processor, a vehicle start control method is implemented. The display unit of the electronic device is used to form a visually visible picture, which may be a display screen, a projection device, or a virtual reality imaging device. The display screen can be a liquid crystal display screen or an electronic ink display screen, and the input device of the electronic device can be a touch layer covering the display screen, or a button, trackball or touchpad set on the electronic device casing, or an external keyboard, touchpad or mouse.

[0114] Those skilled in the art will understand that the structure shown in FIG. 3 is merely a block diagram of a partial structure related to the scheme of the present application, and does not constitute a limitation on the electronic device to which the scheme of the present application is applied. The specific electronic device may include more or fewer components than shown in the figure, or combine certain components, or have a different arrangement of components.

[0115] An embodiment of the present application provides an electronic device, including a memory and a processor, wherein the memory stores a computer program, and when the processor executes the computer program, the following steps are implemented:

[0116] Step S100, controlling the vehicle to run in a quick start mode;

[0117] Step S200, calculating a first torque of the engine required to meet a vehicle starting condition in a quick start mode;

[0118] Step S300, when a brake release signal is received, controlling the engine to output a first torque and controlling the clutch to engage to a first engagement process;

[0119] Step S400, when the brake release time is less than the set start time and the throttle opening signal is received, the vehicle is controlled to perform a quick start action; when the throttle opening signal is not received and the brake release time is greater than or equal to the set start time, the vehicle is controlled to perform an automatic start action.

[0120] In some embodiments, the electronic device may be a vehicle control unit (VCU) or a transmission control unit (TCU) of the vehicle.

[0121] In some embodiments, when the processor executes the computer program, the processor further implements the following steps:

[0122] Step S410, obtaining throttle opening information;

[0123] Step S420, calculating a second torque of the engine required to meet the vehicle quick start condition and a third torque of the engine corresponding to the throttle opening, wherein the second torque is greater than the first torque;

[0124] Step S430, when the third torque is greater than the second torque, control the engine to output the third torque and control the clutch to engage to the second engagement process; when the third torque is less than or equal to the second torque, control the engine to output the second torque and control the clutch to engage to the second engagement process.

[0125] Those skilled in the art can understand that all or part of the processes in the above-mentioned embodiment methods can be completed by instructing the relevant hardware through a computer program, and the computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, any reference to the memory, database or other medium used in the embodiments provided in this application can include at least one of non-volatile and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical memory, high-density embedded non-volatile memory, resistive random access memory (ReRAM), magnetoresistive random access memory (MRAM), ferroelectric random access memory (FRAM), phase change memory (PCM), graphene memory, etc. Volatile memory can include random access memory (RAM) or external cache memory, etc. As an illustration and not limitation, RAM can be in various forms, such as static random access memory (SRAM) or dynamic random access memory (DRAM). The database involved in each embodiment provided in this application may include at least one of a relational database and a non-relational database. Non-relational databases may include distributed databases based on blockchains, etc., but are not limited to this. The processor involved in each embodiment provided in this application may be a general-purpose processor, a central processing unit, a graphics processor, a digital signal processor, a programmable logic device, a data processing logic device based on quantum computing, etc., but are not limited to this.

[0126] Based on the same inventive concept, the embodiment of the present application also provides a vehicle, the vehicle includes the electronic device provided by the above embodiment; or the vehicle includes the vehicle start control device provided by the above embodiment. In this way, the vehicle can implement the vehicle start control method involved above. The implementation scheme for solving the problem provided by the vehicle is similar to the implementation scheme recorded in the above method, so it has the same technical effect as the vehicle start control method above, and will not be repeated here.

[0127] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0128] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. A vehicle starting control method, characterized in that: include: Control the vehicle to run in quick start mode; Calculating a first torque of the engine required to meet a vehicle starting condition in a quick start mode; When a brake release signal is received, the engine is controlled to output a first torque, and the clutch is controlled to engage to a first engagement process; When the brake release time is less than the set start time and the throttle-on signal is received, the vehicle is controlled to perform a quick start action; when the throttle-on signal is not received and the brake release time is greater than or equal to the set start time, the vehicle is controlled to perform an automatic start action.

2. The vehicle starting control method according to claim 1, characterized in that: The controlling the vehicle to perform a quick start action includes: Get throttle opening information; Calculating a second torque of the engine required to meet a vehicle quick start condition and a third torque of the engine corresponding to the throttle opening, wherein the second torque is greater than the first torque; When the third torque is greater than the second torque, the engine is controlled to output the third torque and the clutch is controlled to engage to the second engagement process; when the third torque is less than or equal to the second torque, the engine is controlled to output the second torque and the clutch is controlled to engage to the second engagement process.

3. The vehicle starting control method according to claim 2, characterized in that: The simultaneously controlling the clutch to engage to the second engagement process includes: Get the instantaneous torque of the engine at the current moment; According to the instantaneous torque of the engine at the current moment, the clutch engagement process size at the next moment after the set time interval is controlled; When the clutch is not engaged in the second engagement process, the process returns to the step of obtaining the instantaneous torque of the engine at the current moment, until the clutch is engaged in the second engagement process.

4. The vehicle starting control method according to claim 2, characterized in that: The first torque is set to 15% to 30% of the maximum reference torque of the engine, and the second torque is set to 30% to 40% of the maximum reference torque of the engine; And / or, the first engagement process is set to 20% to 40% of the full engagement process of the clutch, and the second engagement process is set to 40% to 60% of the full engagement process of the clutch.

5. The vehicle starting control method according to claim 1, characterized in that: The calculating of the first torque of the engine required to meet the vehicle starting condition in the quick starting mode includes: Obtain the vehicle's slope information, load information, and speed ratio information; The first torque of the engine is calculated according to the slope information, load information and speed ratio information of the vehicle.

6. The vehicle starting control method according to any one of claims 1 to 5, characterized in that: Before controlling the vehicle to run the quick start mode, the method further includes: Determine that the vehicle is in a start-up preparation state and whether a quick start mode start signal has been received; When a quick start mode start signal is received, the vehicle is controlled to run in the quick start mode; when no quick start mode start signal is received, the vehicle is controlled to run in the normal start mode.

7. The vehicle starting control method according to claim 6, characterized in that: The quick start mode activation signal includes at least one of the following: a switch-on signal; a voice recognition signal; a gesture recognition signal; and a brake opening greater than a preset opening signal.

8. A vehicle starting control device, characterized in that: The vehicle launch control device includes: A control module, used for controlling the vehicle to operate in a quick start mode; A calculation module, used for calculating a first torque of the engine required to meet a vehicle starting condition in a quick start mode; A receiving module, used for receiving a brake release signal and a throttle opening signal; The control module is also used to control the engine to output a first torque when a brake release signal is received, and to control the clutch to engage to a first engagement process, and to control the vehicle to perform a quick start action when the brake release time is less than a set start time and a throttle opening signal is received, and to control the vehicle to perform an automatic start action when no throttle opening signal is received and the brake release time is greater than or equal to the set start time.

9. An electronic device comprising a memory and a processor, wherein the memory stores a computer program, wherein: When the processor executes the computer program, the steps of the method according to any one of claims 1 to 7 are implemented.

10. A vehicle, characterized in that: The vehicle includes the electronic device according to claim 9; or the vehicle includes the vehicle starting control device according to claim 8.

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