Methods, systems, vehicles, equipment, and media for rapidly responding to torque requests.

Abstract

This application discloses a method, system, vehicle, device, and medium for rapidly responding to torque requests. The method for rapidly responding to torque requests includes: responding to a requested torque; determining whether the engine is operating under low load; if the engine is operating under low load, determining whether the required intake air volume corresponding to the requested torque is greater than the air volume corresponding to a fully open throttle without boost; if the required intake air volume corresponding to the requested torque is greater than the air volume corresponding to a fully open throttle without boost, determining whether the boost pressure corresponding to the requested torque is greater than a predetermined boost pressure; if so, deactivating the exhaust VVT control until the actual boost pressure meets the request, at which point the exhaust VVT control is activated. Using this application, the exhaust VVT can be controlled by determining the intake air volume and boost pressure, thereby rapidly increasing the intake air volume and thus increasing engine power output to quickly respond to torque requests.

Description

Technical Field

[0001] This application relates to the field of vehicle technology, and more particularly to a method, system, vehicle, device, and medium for rapidly responding to torque requests. Background Technology

[0002] For hybrid vehicles, which typically have two or more power sources, the coordinated operation between these power sources becomes crucial. The hybrid vehicle controller, as the core controller for overall vehicle control, needs to flexibly adjust the operating status of the power sources according to the vehicle's driving conditions. When the vehicle is traveling at low speeds, and the hybrid vehicle controller sends a rapid and large torque request to the engine management system, the engine management system needs to increase torque. If the torque reserve in the combustion chamber is insufficient, it will quickly compensate for the intake air volume through the air intake system. However, fully opening the throttle takes time and involves a delay. Devices in the intake manifold between the air mass flow meter and the throttle, such as the compressor and intercooler, will generate significant resistance to the intake air, thus reducing the engine's transient power response speed. Summary of the Invention

[0003] Therefore, it is necessary to provide a method, system, vehicle, device, and medium for rapidly responding to torque requests, which can control the exhaust VVT by judging the intake air volume and boost pressure, thereby rapidly increasing the intake air volume and thus increasing the engine power output to quickly respond to torque demands.

[0004] Firstly, a method for rapidly responding to torque requests is provided, including: Responding to torque demand requests; Determine if the engine is operating under low load conditions; If the engine is operating under low load, determine whether the required intake air volume corresponding to the required torque is greater than the air volume corresponding to the throttle being fully open but without boost. If the required intake volume corresponding to the required torque is greater than the volume corresponding to the throttle being fully open but without boost pressure, then it is determined whether the boost pressure corresponding to the required torque is greater than the predetermined boost pressure. If so, the exhaust VVT control will be deactivated until the actual boost pressure meets the requirements and the exhaust VVT control will be activated.

[0005] Furthermore, determining whether the engine is operating under low load includes: Determine whether the load on the engine is less than the predetermined load; Determine if the vehicle speed is lower than the predetermined speed; If the engine load is less than the predetermined load and the vehicle speed is less than the predetermined vehicle speed, then the engine is determined to be in a low-load operating condition.

[0006] Furthermore, before determining whether the boost pressure corresponding to the required torque is greater than the air volume corresponding to the throttle being fully open but without boost, the method further includes: Obtain the base boost pressure, wherein the base boost pressure is the pressure when the throttle is fully open but the boost condition has not been entered; The predetermined boost pressure is obtained based on the basic boost pressure and the first preset threshold.

[0007] Furthermore, the step of deactivating the exhaust VVT control until the actual boost pressure meets the requirement includes: This deactivates the exhaust VVT control. Determine whether the difference between the boost pressure corresponding to the required torque and the actual boost pressure is less than a second preset threshold. If so, determine that the actual boost pressure meets the requirements and activate the exhaust VVT control.

[0008] Furthermore, when determining that the required intake air volume corresponding to the required torque is greater than the air volume corresponding to when the throttle is fully open but no boost is applied, the method further includes: Open the bypass line until the pressure in the intake manifold is greater than the target pressure, then close the bypass line. One end of the bypass line is directly connected to the output of the air filter, and the other end of the bypass line is directly connected to the intake of the intake manifold.

[0009] Furthermore, the target pressure is determined based on standard atmospheric pressure.

[0010] Secondly, a system for rapidly responding to torque requests is provided, including: The response module is used to respond to torque requests. The operating condition acquisition module is used to determine whether the engine is operating under low load conditions. The air volume judgment module is used to determine whether the required intake air volume corresponding to the required torque is greater than the air volume corresponding to the throttle being fully open but without boost when the engine is operating under low load conditions. The comparison module is used to determine whether the boost pressure corresponding to the demand torque is the predetermined boost pressure when the demand intake volume corresponding to the demand torque is greater than the volume corresponding to the throttle valve being fully open but without boost pressure. The control module is used to deactivate the exhaust VVT control when the boost pressure corresponding to the required torque is greater than the predetermined boost pressure, until the exhaust VVT control is activated when the actual boost pressure meets the requirement.

[0011] Thirdly, a vehicle is provided, comprising: a system for rapidly responding to torque requests as described in the second aspect above.

[0012] Fourthly, a computer device is provided, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the processor executes the program, it implements the steps of the method for rapidly responding to torque requests as described in the first aspect and any possible implementation thereof.

[0013] Fifthly, a computer-readable storage medium is provided having a computer program stored thereon, which, when executed by a processor, implements the steps of the method for rapidly responding to torque requests as described in the first aspect and any possible implementation thereof.

[0014] In the embodiments of this application, the system first responds to the requested torque; then it determines whether the engine is operating under low load. If the engine is operating under low load, it determines whether the required intake air volume corresponding to the requested torque is greater than the air volume corresponding to when the throttle is fully open but no boost is applied. If the required intake air volume corresponding to the requested torque is greater than the air volume corresponding to when the throttle is fully open but no boost is applied, it determines whether the boost pressure corresponding to the requested torque is greater than the predetermined boost pressure. If so, the exhaust VVT control is deactivated until the actual boost pressure meets the requirement, at which point the exhaust VVT control is activated. Therefore, by judging the intake air volume and boost pressure, the exhaust VVT can be controlled, thereby rapidly increasing the intake air volume and thus increasing the engine power output to quickly respond to torque demands. Attached Figure Description

[0015] Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings: Figure 1 A flowchart illustrating a method for rapidly responding to torque requests provided in an embodiment of this application; Figure 2 This is an overall architecture diagram of the intake system provided in the embodiments of this application; Figure 3 A schematic diagram illustrating the execution of the method for rapidly responding to torque requests provided in an embodiment of this application; Figure 4 A structural block diagram of a system for rapidly responding to torque requests provided in an embodiment of this application; Figure 5 This is a structural block diagram of a computer device provided in an embodiment of this application. Detailed Implementation

[0016] The present application will now be described in further detail with reference to the embodiments and accompanying drawings. It should be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the application. Furthermore, it should be noted that, for ease of description, only the parts relevant to the application are shown in the accompanying drawings.

[0017] It should be noted that, unless otherwise specified, the embodiments and features of the embodiments in this application can be combined with each other. The present application will now be described in detail with reference to the accompanying drawings and embodiments.

[0018] The following describes in detail, with reference to the accompanying drawings, a method, system, vehicle, device, and medium for rapidly responding to torque requests according to embodiments of this application.

[0019] Figure 1 This is a flowchart of a method for quickly responding to torque requests according to an embodiment of this application. Figure 1 As shown, and in combination Figure 3 The method for quickly responding to torque requests according to embodiments of this application includes the following steps: S101: Responds to torque demand requests.

[0020] S102: Determine whether the engine is operating under low load conditions.

[0021] In one embodiment of this application, determining whether the engine is in a low-load operating condition includes: determining whether the engine load is less than a predetermined load; determining whether the vehicle speed is less than a predetermined vehicle speed; if the engine load is less than the predetermined load and the vehicle speed is less than the predetermined vehicle speed, then the engine is determined to be in a low-load operating condition.

[0022] S103: If the engine is operating under low load, determine whether the required intake air volume corresponding to the required torque is greater than the air volume corresponding to the throttle being fully open but not pressurized.

[0023] S104: If the required intake volume corresponding to the required torque is greater than the air volume corresponding to the throttle being fully open but without boost pressure, then determine whether the boost pressure corresponding to the required torque is greater than the predetermined boost pressure.

[0024] In one embodiment of this application, when it is determined that the required intake volume corresponding to the required torque is greater than the volume corresponding to the air volume when the throttle is fully open but no boost is applied, the method further includes: opening the bypass line until the pressure in the intake manifold is greater than the target pressure, and then closing the bypass line. One end of the bypass line is directly connected to the output end of the air filter, and the other end of the bypass line is directly connected to the intake end of the intake manifold.

[0025] In one embodiment of this application, the target pressure is determined based on standard atmospheric pressure.

[0026] Specifically, such as Figure 2 As shown, a pressure threshold is set. When the pressure in the intake manifold rises above the standard atmospheric pressure minus the pressure threshold, it is considered that the pressure in the intake manifold is close to atmospheric pressure. At this time, the throttle valve is fully open, but to enter an enhanced operating condition, the bypass line can be closed. In a specific example, the pressure threshold can be set to 100, but it can also be set according to actual needs.

[0027] In one embodiment of this application, before determining whether the boost pressure corresponding to the demand torque is greater than the predetermined boost pressure if the demand intake volume corresponding to the demand torque is greater than the volume corresponding to the throttle being fully open but not boosted, the method further includes: obtaining a base boost pressure, wherein the base boost pressure is the pressure when the throttle is fully open but not boosted; and obtaining the predetermined boost pressure based on the base boost pressure and a first preset threshold.

[0028] Specifically, the predetermined boost pressure = base boost pressure + first preset threshold. In a specific example, the first preset threshold can be set to 500, or it can be set according to actual needs.

[0029] S105: If so, the exhaust VVT control is deactivated until the actual boost pressure meets the requirements and the exhaust VVT control is activated.

[0030] In one embodiment of this application, the step of deactivating the exhaust VVT control until the actual boost pressure meets the requirement includes: deactivating the exhaust VVT control; determining whether the difference between the boost pressure corresponding to the required torque and the actual boost pressure is less than a second preset threshold; if so, determining that the actual boost pressure meets the requirement and activating the exhaust VVT control.

[0031] In a specific example, the second preset threshold can be set to 100, or it can be set according to actual needs.

[0032] According to the method for quickly responding to torque requests in this application embodiment, the method first responds to the required torque request; then it determines whether the engine is operating under low load; if the engine is operating under low load, it determines whether the required intake air volume corresponding to the required torque is greater than the air volume corresponding to when the throttle is fully open but no boost; if the required intake air volume corresponding to the required torque is greater than the air volume corresponding to when the throttle is fully open but no boost, it determines whether the boost pressure corresponding to the required torque is greater than a predetermined boost pressure; if so, the exhaust VVT control is deactivated until the actual boost pressure meets the requirement, at which point the exhaust VVT control is activated. Therefore, by judging the intake air volume and boost pressure, the exhaust VVT can be controlled, thereby quickly increasing the intake air volume and thus increasing the engine power output to quickly respond to torque requests.

[0033] Figure 4 This is a structural block diagram of a system for rapidly responding to torque requests according to an embodiment of this application. Figure 4 As shown, the system for rapidly responding to torque requests according to an embodiment of this application includes: a response module 410, a working condition acquisition module 420, an air volume judgment module 430, a comparison module 440, and a control module 450, wherein: Response module 410 is used to respond to torque demand requests; The operating condition acquisition module 420 is used to determine whether the engine is operating under low load conditions. The air volume judgment module 430 is used to determine whether the required intake air volume corresponding to the required torque is greater than the air volume corresponding to the throttle valve being fully open but without boost when the engine is operating under low load conditions. Comparison module 440 is used to determine whether the boost pressure corresponding to the demand torque is the predetermined boost pressure when the demand intake volume corresponding to the demand torque is greater than the volume corresponding to the throttle valve being fully open but without boost pressure. The control module 450 is used to deactivate the exhaust VVT control when the boost pressure corresponding to the required torque is greater than the predetermined boost pressure, until the exhaust VVT control is activated when the actual boost pressure meets the requirement.

[0034] The system for rapidly responding to torque requests according to embodiments of this application first responds to the requested torque; then it determines whether the engine is operating under low load; if the engine is operating under low load, it determines whether the required intake air volume corresponding to the requested torque is greater than the air volume corresponding to when the throttle is fully open but no boost; if the required intake air volume corresponding to the requested torque is greater than the air volume corresponding to when the throttle is fully open but no boost, it determines whether the boost pressure corresponding to the requested torque is greater than a predetermined boost pressure; if so, the exhaust VVT control is deactivated until the actual boost pressure meets the requirement, at which point the exhaust VVT control is activated. Thus, by determining the intake air volume and boost pressure, the exhaust VVT can be controlled, thereby rapidly increasing the intake air volume and increasing engine power output to quickly respond to torque demands.

[0035] Specific limitations regarding the system for rapidly responding to torque requests can be found in the limitations of the method for rapidly responding to torque requests described above, and will not be repeated here. Each module of the aforementioned system for rapidly responding to torque requests can be implemented entirely or partially through software, hardware, or a combination thereof. These modules can be embedded in or independent of the processor in a computer device in hardware form, or stored in the memory of the computer device in software form, so that the processor can call and execute the operations corresponding to each module.

[0036] In one embodiment, a vehicle is provided, comprising: a system for rapidly responding to torque requests according to any of the above embodiments. The vehicle first responds to a demand torque request; then determines whether the engine is operating under low load; if the engine is operating under low load, it determines whether the demand intake air volume corresponding to the demand torque is greater than the air volume corresponding to when the throttle is fully open but no boost; if the demand intake air volume corresponding to the demand torque is greater than the air volume corresponding to when the throttle is fully open but no boost, it determines whether the boost pressure corresponding to the demand torque is greater than a predetermined boost pressure; if so, the exhaust VVT control is deactivated until the actual boost pressure meets the demand, at which point the exhaust VVT control is activated. Thus, by determining the intake air volume and boost pressure, the exhaust VVT can be controlled, thereby rapidly increasing the intake air volume and increasing engine power output to quickly respond to torque demands.

[0037] Furthermore, other components and functions of the vehicle according to the embodiments of this application are known to those skilled in the art and will not be described in detail here.

[0038] In one embodiment, a computer device is provided. Figure 5 This is a structural block diagram of the computer device provided in the embodiments of this application, with reference to... Figure 5The computer device includes a memory and a processor. The memory stores a computer program, and the processor executes the computer program to implement the aforementioned method embodiment for quickly responding to torque requests. For example, it executes: responding to a demand torque request; Determine if the engine is operating under low load conditions; If the engine is operating under low load, determine whether the required intake air volume corresponding to the required torque is greater than the air volume corresponding to the throttle being fully open but without boost. If the required intake volume corresponding to the required torque is greater than the volume corresponding to the throttle being fully open but without boost pressure, then it is determined whether the boost pressure corresponding to the required torque is greater than the predetermined boost pressure. If so, the exhaust VVT control will be deactivated until the actual boost pressure meets the requirements and the exhaust VVT control will be activated.

[0039] This application also provides a computer-readable storage medium storing a computer program, which, when executed by a processor, implements the aforementioned method embodiment for rapidly responding to torque requests. For example, it executes: responding to a demand torque request; Determine if the engine is operating under low load conditions; If the engine is operating under low load, determine whether the required intake air volume corresponding to the required torque is greater than the air volume corresponding to the throttle being fully open but without boost. If the required intake volume corresponding to the required torque is greater than the volume corresponding to the throttle being fully open but without boost pressure, then it is determined whether the boost pressure corresponding to the required torque is greater than the predetermined boost pressure. If so, the exhaust VVT control will be deactivated until the actual boost pressure meets the requirements and the exhaust VVT control will be activated.

[0040] Those skilled in the art will understand that all or part of the processes in the methods of the above embodiments can be implemented by a computer program instructing related hardware. The computer program can be stored in a non-volatile computer-readable storage medium, and when executed, it can include the processes of the embodiments of the methods described above. Any references to memory, storage, databases, or other media 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, or optical storage, etc. Volatile memory can include random access memory (RAM) or external cache memory. By way of illustration and not limitation, RAM can be in various forms, such as static random access memory (SRAM) or dynamic random access memory (DRAM), etc.

[0041] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above 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.

[0042] The above embodiments merely illustrate several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A method for rapidly responding to torque requests, characterized in that, include: Responding to torque demand requests; Determine if the engine is operating under low load conditions; If the engine is operating under low load, determine whether the required intake air volume corresponding to the required torque is greater than the air volume corresponding to the throttle being fully open but without boost. If the required intake volume corresponding to the required torque is greater than the volume corresponding to the throttle being fully open but without boost pressure, then it is determined whether the boost pressure corresponding to the required torque is greater than the predetermined boost pressure. If so, the exhaust VVT control will be deactivated until the actual boost pressure meets the requirements and the exhaust VVT control will be activated.

2. The method for rapidly responding to torque requests according to claim 1, characterized in that, The determination of whether the engine is operating under low load includes: Determine whether the load on the engine is less than the predetermined load; Determine if the vehicle speed is lower than the predetermined speed; If the engine load is less than the predetermined load and the vehicle speed is less than the predetermined vehicle speed, then the engine is determined to be in a low-load operating condition.

3. The method for rapidly responding to torque requests according to claim 1, characterized in that, Before determining whether the boost pressure corresponding to the required torque is greater than the air volume when the throttle is fully open but no boost is applied, the method further includes: Obtain the base boost pressure, wherein the base boost pressure is the pressure when the throttle is fully open but the boost condition has not been entered; The predetermined boost pressure is obtained based on the basic boost pressure and the first preset threshold.

4. The method for rapidly responding to torque requests according to claim 1, characterized in that, The process of deactivating the exhaust VVT control until the actual boost pressure meets the requirements includes: This deactivates the exhaust VVT control. Determine whether the difference between the boost pressure corresponding to the required torque and the actual boost pressure is less than a second preset threshold. If so, determine that the actual boost pressure meets the requirements and activate the exhaust VVT control.

5. The method for rapidly responding to torque requests according to claim 1, characterized in that, When determining that the required intake air volume corresponding to the required torque is greater than the air volume corresponding to when the throttle is fully open but no boost is applied, the following is also included: Open the bypass line until the pressure in the intake manifold is greater than the target pressure, then close the bypass line. One end of the bypass line is directly connected to the output of the air filter, and the other end of the bypass line is directly connected to the intake of the intake manifold.

6. The method for rapidly responding to torque requests according to claim 5, characterized in that, The target pressure is determined based on standard atmospheric pressure.

7. A system for rapidly responding to torque requests, characterized in that, include: The response module is used to respond to torque requests. The operating condition acquisition module is used to determine whether the engine is operating under low load conditions. The air volume judgment module is used to determine whether the required intake air volume corresponding to the required torque is greater than the air volume corresponding to the throttle being fully open but without boost when the engine is operating under low load conditions. The comparison module is used to determine whether the boost pressure corresponding to the demand torque is the predetermined boost pressure when the demand intake volume corresponding to the demand torque is greater than the volume corresponding to the throttle valve being fully open but without boost pressure. The control module is used to deactivate the exhaust VVT control when the boost pressure corresponding to the required torque is greater than the predetermined boost pressure, until the exhaust VVT control is activated when the actual boost pressure meets the requirement.

8. A vehicle, characterized in that, include: The system for rapidly responding to torque requests as described in claim 7.

9. A computer device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that, When the processor executes the program, it implements the method for rapidly responding to torque requests as described in any one of claims 1-6.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by a processor, it implements the method for rapidly responding to torque requests according to any one of claims 1-6.

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