A control method, control system, device, storage medium and vehicle for parking condition of a passenger vehicle

Abstract

A method, control system, equipment, storage medium, and vehicle for controlling parking conditions of a passenger vehicle are disclosed, belonging to the field of parking condition technology, which solves the problem of existing functional controllers being unable to coordinate control. The system includes an ECU module, a TCU module, an ESP module, a driving mode control module, and a vehicle control module; the ECU module controls the idle stop function; the TCU module controls the neutral gear control function; the ESP module controls the automatic parking and hill start assist functions; the driving mode control module sends vehicle driving status signals to the ECU module and the TCU module; the vehicle control module receives status signals from the ECU module, TCU module, ESP module, and driving mode control module, and issues control commands to the ECU module and TCU module.

Description

Technical Field

[0001] The present invention relates to the technical field of parking conditions, and in particular to a control method, a control system, a device, a storage medium and a car for a parking condition of a passenger car. Background Art

[0002] The current passenger car market is becoming increasingly competitive. From the handling of after-sales issues, it is not difficult to find that consumers are paying more and more attention to the comprehensive performance of vehicles during use, especially NVH performance, economy and driving performance. Parking is a common condition in the use of vehicles, especially in urban roads with traffic congestion. Therefore, parking conditions are also a part that needs to be focused on and studied during the research and development of vehicles.

[0003] As for the idle stop, neutral gear control, automatic parking and hill hold functions, these functions have basically become standard in passenger cars and are relatively mature.

[0004] The existing technologies for these performance improvement functions often rely on separate calibration of each controller. For example, the idle stop function is controlled by the ECU, and the neutral control function is controlled by the TCU. The activation conditions of the two functions conflict and restrict each other, resulting in the idle stop function being activated sometimes and the neutral control being activated sometimes due to different operations of the driver during parking conditions. Moreover, the function activation conditions are not associated with the vehicle driving mode, and the vehicle performance cannot be taken into account at the same time.

[0005] However, the existing technology has the defect that the control logic interaction between functions and the priority of function activation are not defined and processed.

[0006] In the prior art, patent document CN106195259A discloses "a method for controlling the neutral position of an automatic transmission", which detects the state of the automatic parking function when the automatic transmission control unit detects that the pressure of the brake master cylinder or the state of the brake pedal meets the conditions for the neutral position control function to exit from the activation state, and determines whether to exit the neutral position control function according to the state of the automatic parking function, so that the automatic parking function can be compatible with the neutral position control function, while reducing the fuel consumption of the whole vehicle and improving the NVH performance, it will also improve the driving comfort. Furthermore, by adding slope information to the activation conditions of the neutral position control function, the car cannot enter the neutral position control function at a large slope, which can effectively prevent the car from slipping and increase the safety performance of the whole vehicle. Patent document CN101994586A discloses "a control system for the idle start and stop of an automobile engine", which can accurately realize the control of the idle start and stop of the engine, reduce the fuel consumption of the engine when idling, and reduce the pollution to the atmosphere.

[0007] In summary, the existing functional controllers cannot achieve coordinated control. Summary of the invention

[0008] The present invention solves the problem that the existing functional controllers cannot perform coordinated control.

[0009] A control system for a parking condition of a passenger vehicle according to the present invention comprises an ECU module, a TCU module, an ESP module, a driving mode control module and a vehicle control module;

[0010] The ECU module controls the idle stop function;

[0011] The TCU module controls the neutral gear control function;

[0012] The ESP module controls the automatic parking and hill assist functions;

[0013] The driving mode control module sends a vehicle driving state signal to the ECU module and the TCU module;

[0014] The vehicle control module receives status signals from the ECU module, the TCU module, the ESP module and the driving mode control module, and issues control instructions to the ECU module and the TCU module.

[0015] A method for controlling a parking condition of a passenger vehicle according to the present invention is implemented by using the control system for the parking condition of a passenger vehicle according to the above method, and the method comprises:

[0016] When the driving mode control module controls the vehicle to be in the economic mode, the ECU module sends an idle stop request to the vehicle control module when the conditions are met. The vehicle control module determines whether the idle stop function meets a series of conditions. If so, the vehicle control module allows the ECU module to perform idle stop control;

[0017] If not, the vehicle control module prohibits the ECU module from performing idle stop control. Or when the idle stop function conditions are not met, the vehicle control module receives the neutral control request sent by the TCU module and determines whether the neutral control function meets the specified conditions. If so, the vehicle control module allows the neutral control function to be activated. If not, the vehicle control module prohibits the activation of the neutral control function.

[0018] Further, in one embodiment of the present invention, a series of conditions for the vehicle control module to determine whether the idle stop function is activated are brake pressure>a or AVH activation;

[0019] The braking pressure a is a variable parameter and is confirmed based on the vehicle field test performance.

[0020] Furthermore, in one embodiment of the present invention, the method further comprises:

[0021] When the driving mode control module controls the vehicle to be in comfort mode, if the external conditions of the neutral gear control function are met, the TCU module sends a neutral gear control request to the vehicle control module, and the vehicle control module determines whether the neutral gear control function meets the specified conditions. If so, the vehicle control module allows the neutral gear control function to be activated;

[0022] If not, the vehicle control module prohibits the activation of the neutral control function, or when the external conditions of the neutral control function are not met, the vehicle control module receives the idle stop request sent by the ECU module and determines whether the brake master cylinder pressure is greater than e. If so, the vehicle control module allows the ECU module to perform idle stop control, if not, the vehicle control module prohibits the ECU module from performing idle stop control;

[0023] The brake pressure e is a variable parameter and is confirmed based on the vehicle's field test performance.

[0024] Further, in one embodiment of the present invention, the vehicle control module determines whether the neutral control function satisfies the specified condition that AVH is activated or the brake pressure is greater than b and the slope is less than c or the brake pressure is greater than d and the HHC is activated;

[0025] The braking pressure b, braking pressure d and slope c are variable parameters and are confirmed based on the vehicle field test performance.

[0026] Furthermore, in one embodiment of the present invention, the method further comprises:

[0027] When the driving mode control module controls the vehicle to be in the sport mode, if the external conditions of the neutral gear control function are met, the TCU module sends a neutral gear control request, and the vehicle control module receives and determines whether the neutral gear control function meets the specified conditions. If so, the vehicle control module allows the neutral gear control function to be activated;

[0028] If not, the vehicle control module prohibits the activation of the neutral control function, or when the external conditions of the neutral control function are not met, the vehicle control module receives an idle stop request and prohibits the ECU module from performing idle stop control in the sports mode.

[0029] Further, in one embodiment of the present invention, the vehicle control module determines whether the neutral control function satisfies the specified conditions that the braking pressure is greater than f and the slope is less than g;

[0030] The braking pressure f and the slope g are variable parameters and are confirmed based on the vehicle's field test performance.

[0031] The automobile described in the present invention has a control system for the passenger car parking condition described in the above method arranged inside the automobile.

[0032] An electronic device described in the present invention comprises a processor, a communication interface, a memory and a communication bus, wherein the processor, the communication interface and the memory communicate with each other via the communication bus;

[0033] Memory, used to store computer programs;

[0034] The processor is used to implement any method step described in the above method when executing the program stored in the memory.

[0035] The present invention provides a computer-readable storage medium, wherein a computer program is stored in the computer-readable storage medium, and when the computer program is executed by a processor, any method step described in the above method is implemented.

[0036] The present invention solves the problem that the existing functional controllers cannot coordinate control. Specific beneficial effects include:

[0037] The control system of a passenger car parking condition described in the present invention, in the parking condition, the engine will enter the idle shutdown function when the conditions are met, which can improve fuel economy; the transmission will enter the neutral control function when the conditions are met, by disconnecting the clutch, cutting off the power transmission path, reducing the load when the engine is idling, reducing fuel consumption and reducing the roar of the engine when idling, and improving NVH performance; the ESP module can activate the automatic parking function or the hill holding function when the conditions are met, reducing the dependence of the parking condition on the foot brake, and improving the driving comfort of the driver, so that each functional controller achieves the effect of coordinated control. At the same time, the performance of the above modules is also very different depending on the driving mode of the transmission. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0039] Figure 1 It is an interactive relationship diagram between the vehicle control device and each controller described in a specific implementation method.

[0040] Figure 2 It is a control strategy diagram of the economic mode of the whole vehicle control device described in the specific implementation method.

[0041] Figure 3 It is a comfort mode control strategy diagram of the vehicle control device described in a specific implementation manner.

[0042] Figure 4 It is a motion mode control strategy diagram of the whole vehicle control device described in a specific implementation manner. DETAILED DESCRIPTION

[0043] The following will clearly and completely describe various embodiments of the present invention in conjunction with the accompanying drawings. The embodiments described with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0044] A control system for a parking condition of a passenger vehicle described in this embodiment includes an ECU module, a TCU module, an ESP module, a driving mode control module and a vehicle control module;

[0045] The ECU module controls the idle stop function;

[0046] The TCU module controls the neutral gear control function;

[0047] The ESP module controls the automatic parking and hill assist functions;

[0048] The driving mode control module sends a vehicle driving state signal to the ECU module and the TCU module;

[0049] The vehicle control module receives status signals from the ECU module, the TCU module, the ESP module and the driving mode control module, and issues control instructions to the ECU module and the TCU module.

[0050] A method for controlling a parking condition of a passenger vehicle described in this embodiment is implemented by using a control system for a parking condition of a passenger vehicle described in the above embodiment, and the method includes:

[0051] When the driving mode control module controls the vehicle to be in the economic mode, the ECU module sends an idle stop request to the vehicle control module when the conditions are met. The vehicle control module determines whether the idle stop function meets a series of conditions. If so, the vehicle control module allows the ECU module to perform idle stop control;

[0052] If not, the vehicle control module prohibits the ECU module from performing idle stop control. Or when the idle stop function conditions are not met, the vehicle control module receives the neutral control request sent by the TCU module and determines whether the neutral control function meets the specified conditions. If so, the vehicle control module allows the neutral control function to be activated. If not, the vehicle control module prohibits the activation of the neutral control function.

[0053] In this embodiment, the vehicle control module determines whether the idle stop function is activated under a series of conditions: brake pressure>a or AVH is activated;

[0054] The braking pressure a is a variable parameter and is confirmed based on the vehicle field test performance.

[0055] In this embodiment, the method further includes:

[0056] When the driving mode control module controls the vehicle to be in comfort mode, if the external conditions of the neutral gear control function are met, the TCU module sends a neutral gear control request to the vehicle control module, and the vehicle control module determines whether the neutral gear control function meets the specified conditions. If so, the vehicle control module allows the neutral gear control function to be activated;

[0057] If not, the vehicle control module prohibits the activation of the neutral control function, or when the external conditions of the neutral control function are not met, the vehicle control module receives the idle stop request sent by the ECU module and determines whether the brake master cylinder pressure is greater than e. If so, the vehicle control module allows the ECU module to perform idle stop control, if not, the vehicle control module prohibits the ECU module from performing idle stop control;

[0058] The brake pressure e is a variable parameter and is confirmed based on the vehicle's field test performance.

[0059] In this embodiment, the vehicle control module determines whether the neutral control function satisfies the specified conditions that AVH is activated or the brake pressure is greater than b and the slope is less than c or the brake pressure is greater than d and the HHC is activated;

[0060] The braking pressure b, braking pressure d and slope c are variable parameters and are confirmed based on the vehicle field test performance.

[0061] In this embodiment, the method further includes:

[0062] When the driving mode control module controls the vehicle to be in the sport mode, if the external conditions of the neutral gear control function are met, the TCU module sends a neutral gear control request, and the vehicle control module receives and determines whether the neutral gear control function meets the specified conditions. If so, the vehicle control module allows the neutral gear control function to be activated;

[0063] If not, the vehicle control module prohibits the activation of the neutral control function, or when the external conditions of the neutral control function are not met, the vehicle control module receives an idle stop request and prohibits the ECU module from performing idle stop control in the sports mode.

[0064] In this embodiment, the vehicle control module determines whether the neutral control function satisfies the specified conditions that the braking pressure is greater than f and the slope is less than g;

[0065] The braking pressure f and the slope g are variable parameters and are confirmed based on the vehicle's field test performance.

[0066] The present embodiment describes a car, in which the control system for the parking condition of the passenger car described in the above embodiment is arranged.

[0067] An electronic device described in this embodiment includes a processor, a communication interface, a memory and a communication bus, wherein the processor, the communication interface and the memory communicate with each other via the communication bus;

[0068] Memory, used to store computer programs;

[0069] The processor is used to implement any of the method steps described in the above implementation mode when executing the program stored in the memory.

[0070] A computer-readable storage medium described in this embodiment stores a computer program, and when the computer program is executed by a processor, any method step described in the above embodiment is implemented.

[0071] This embodiment provides a practical implementation method based on a control system for a passenger car parking condition described in the present invention:

[0072] The idle stop function is originally completely controlled by the ECU, which determines whether the engine enters and exits the stop state in the parking condition by judging whether a series of external conditions are met. These conditions include battery voltage, air conditioning status, automatic parking status and brake master cylinder pressure.

[0073] The neutral control function is originally completely controlled by the TCU, which determines whether the transmission enters and exits the neutral state in the parking condition by judging whether a series of external conditions are met. These conditions include transmission oil temperature, vehicle slope, automatic parking state and brake master cylinder pressure.

[0074] Both automatic parking and hill assist are controlled by the ESP module. The driver decides whether to turn on automatic parking by pressing a switch button, and hill assist is turned on based on whether the road slope meets the conditions when parking. These two functions interact with the logic of idle stop and neutral control, and have a great impact on performance.

[0075] Driving mode controllers are increasingly being installed on passenger cars. They can send the driver's requirements for the vehicle's driving status to the vehicle's related controllers, especially the ECU and TCU, so that the vehicle can exhibit different performance in different driving modes.

[0076] The vehicle control device interacts with the above controllers. It receives status signals from each controller and sends control instructions to the ECU and TCU. The specific interaction relationship between the controllers is as follows: Figure 1 shown.

[0077] This embodiment provides a practical embodiment based on a control method for a parking condition of a passenger vehicle according to the present invention:

[0078] The ECU and TCU of vehicles using the vehicle control device still need to judge whether to enter the idle stop and neutral control function according to the original strategy. The judgment conditions no longer include the input conditions of the vehicle control device, such as driving mode, brake master cylinder pressure and slope. When the conditions are met, a request to enter is sent to the vehicle control device, and the permission or prohibition command of the vehicle control device is received to finally decide whether to enter the idle stop and neutral control function. Whether to allow idle stop and neutral control depends on the status signal sent by the driving mode controller, ESP and the internal logic of the vehicle control device. According to the vehicle driving mode, the specific control method is as follows:

[0079] 1) When the driving mode is in economic mode, fuel saving is the first goal of the vehicle. The control strategy of the vehicle control device parking condition requires a greater probability of entering the idle stop condition. The instantaneous fuel consumption when entering the idle stop is zero. If the idle stop condition is not met, the second choice is to enter the neutral control function, which can reduce the engine load in the parking condition and achieve a certain fuel saving effect. Specific control methods are as follows Figure 2 As shown:

[0080] 2) When the driving mode is in comfort mode, the comfort of the driver and passengers is the first goal. It is necessary to ensure the normal operation of the vehicle accessories and the electrical load requirements of the vehicle controllers. The vehicle vibration caused by frequent idling and starting is not conducive to the comfort requirements of the whole vehicle. The whole vehicle control device is more inclined to enter the neutral control function in the parking condition. The specific control method is as follows Figure 3 As shown:

[0081] 3) When the driving mode is in sports mode, power response and control are the first goals. It is necessary to ensure a quick start when the driver steps on the accelerator in the parking condition. If the parking condition enters the idle stop, it takes a certain amount of time to start again, which seriously affects the starting speed. There is also a slight power transmission delay when the neutral control is exited, so its activation timing can be appropriately limited. Specific control methods are as follows: Figure 4 As shown:

[0082] For other driving modes of the vehicle, corresponding control logic can be designed in the vehicle control device according to the characteristics of the mode to coordinate the activation of the idle stop and neutral control functions.

[0083] The above is a detailed introduction to a control method, control system and vehicle for a parking condition of a passenger car proposed in the present invention. Specific examples are used in this article to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method of the present invention and its core idea. At the same time, for those skilled in the art, according to the idea of ​​the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as a limitation on the present invention.

Claims

1. A control system for a passenger car parking condition, characterized in that: The system includes an ECU module, a TCU module, an ESP module, a driving mode control module and a vehicle control module; The ECU module controls the idle stop function; The TCU module controls the neutral control function; The ESP module controls the automatic parking and hill assist functions; The driving mode control module controls the vehicle to be in an economy mode, a comfort mode, and a sports mode; The driving mode control module sends a vehicle driving state signal to the ECU module and the TCU module; The vehicle control module receives status signals from the ECU module, the TCU module, the ESP module and the driving mode control module, and issues control instructions to the ECU module and the TCU module.

2. A method for controlling a parking condition of a passenger vehicle, characterized in that: The method is implemented by using a control system for a passenger vehicle parking condition as claimed in claim 1, and the method comprises: When the driving mode control module controls the vehicle to be in the economic mode, the ECU module sends an idle stop request to the vehicle control module when the conditions are met. The vehicle control module determines whether the idle stop function meets a series of conditions. If so, the vehicle control module allows the ECU module to perform idle stop control; If not, the vehicle control module prohibits the ECU module from performing idle shutdown control. The vehicle control module receives the neutral control request sent by the TCU module and determines whether the neutral control function meets the specified conditions. If so, the vehicle control module allows the neutral control function to be activated. If not, the vehicle control module prohibits the activation of the neutral control function.

3. A method for controlling a parking condition of a passenger vehicle according to claim 2, characterized in that: The vehicle control module determines whether the idle stop function is activated under a series of conditions: brake pressure > a or AVH is activated; The braking pressure a is a variable parameter and is confirmed based on the vehicle field test performance.

4. A method for controlling a parking condition of a passenger vehicle according to claim 2, characterized in that: The method further comprises: When the driving mode control module controls the vehicle to be in comfort mode, if the external conditions of the neutral gear control function are met, the TCU module sends a neutral gear control request to the vehicle control module, and the vehicle control module determines whether the neutral gear control function meets the specified conditions. If so, the vehicle control module allows the neutral gear control function to be activated; If not, the vehicle control module prohibits the activation of the neutral control function, or when the external conditions of the neutral control function are not met, the vehicle control module receives the idle stop request sent by the ECU module and determines whether the brake master cylinder pressure is greater than e. If so, the vehicle control module allows the ECU module to perform idle stop control, if not, the vehicle control module prohibits the ECU module from performing idle stop control; The brake pressure e is a variable parameter and is confirmed based on the vehicle's field test performance.

5. A method for controlling a parking condition of a passenger vehicle according to claim 2 or 4, characterized in that: The vehicle control module determines whether the neutral control function satisfies the specified conditions that AVH is activated or the brake pressure is greater than b and the slope is less than c or the brake pressure is greater than d and HHC is activated; The braking pressure b, braking pressure d and slope c are variable parameters and are confirmed based on the vehicle field test performance.

6. A method for controlling a parking condition of a passenger vehicle according to claim 2, characterized in that: The method further comprises: When the driving mode control module controls the vehicle to be in the sport mode, if the external conditions of the neutral gear control function are met, the TCU module sends a neutral gear control request, and the vehicle control module receives and determines whether the neutral gear control function meets the specified conditions. If so, the vehicle control module allows the neutral gear control function to be activated; If not, the vehicle control module prohibits the activation of the neutral control function, or when the external conditions of the neutral control function are not met, the vehicle control module receives an idle stop request and prohibits the ECU module from performing idle stop control in the sports mode.

7. A method for controlling a parking condition of a passenger vehicle according to claim 6, characterized in that: The vehicle control module determines whether the neutral control function meets the specified conditions that the braking pressure is greater than f and the slope is less than g; The braking pressure f and the slope g are variable parameters and are confirmed based on the vehicle's field test performance.

8. A car, characterized in that: The interior of the automobile is provided with a control system for the parking condition of a passenger vehicle as claimed in claim 1.

9. An electronic device, characterized in that: It includes a processor, a communication interface, a memory and a communication bus, wherein the processor, the communication interface and the memory communicate with each other through the communication bus; Memory, used to store computer programs; A processor, for implementing the method steps described in any one of claims 2-7 when executing a program stored in a memory.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the method steps described in any one of claims 2 to 7 are implemented.

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