CN109241593B

CN109241593B - Pressure determination method and device of triton system and storage medium

Info

Publication number: CN109241593B
Application number: CN201810963936.2A
Authority: CN
Inventors: 万方方; 徐亚飞; 周君
Original assignee: Chery Automobile Co Ltd
Current assignee: Chery Automobile Co Ltd
Priority date: 2018-08-16
Filing date: 2018-08-16
Publication date: 2023-04-07
Anticipated expiration: 2038-08-16
Also published as: CN109241593A

Abstract

The invention discloses a pressure determination method and device of a crank system and a storage medium, and belongs to the technical field of engines. The method comprises the following steps: determining a gas flow model of the contained gas in a model of a triton system of the automobile; obtaining attribute parameters of the gas in the gas flow model; determining a pressure profile of the gas in the gas flow model based on the gas flow model and the property parameters of the gas. The method and the device can determine the gas flow model for containing the gas in the model of the triton system and determine the pressure distribution condition of the gas in the gas flow model according to the gas flow model and the attribute parameters of the gas, so that the quality of the design of the triton system can be measured according to the pressure distribution condition of the gas subsequently, and the design efficiency of the triton system is improved.

Description

Pressure determination method and device of triton system and storage medium

Technical Field

The invention relates to the technical field of engines, in particular to a method and a device for determining pressure of a crank system and a storage medium.

Background

A PCV system (Positive Crankcase Ventilation, short for a crank system) of an automobile is an important system for maintaining normal operation of an engine. In the running process of an automobile engine, waste gas combusted in a cylinder can enter a crankcase from a gap between a piston and the piston ring, a gap between the piston ring and a cylinder sleeve, a valve oil seal, a valve guide pipe and the like, and a crank system can guide the waste gas in the crankcase into a combustion chamber of the engine for combustion so as to prevent the waste gas between the piston and the cylinder wall from escaping into the atmosphere to cause environmental pollution. However, after the exhaust gas enters the crankcase, the pressure in the crankcase may rise for a long time, which causes partial failure of the engine seal, and causes exhaust gas leakage, thereby polluting the environment. At the same time, the resistance to piston descent will increase, thereby affecting the power output of the engine. Therefore, in order to avoid polluting the environment and also to avoid affecting the power output of the engine, it is necessary to determine the pressure profile of the crank system during the design of the automotive engine.

At present, after a triton system is designed, whether the designed triton system meets design requirements or not is tested, and the design of the triton system is modified when the design requirements are not met. However, when the starter system is designed in such a way, repeated tests are needed, which not only wastes time, labor and money, but also causes difficulty in determining the pressure distribution condition inside the starter system because the flowing condition of waste gas inside the starter system is difficult to determine in the test process, thereby reducing the efficiency of starter system design.

Disclosure of Invention

The embodiment of the invention provides a method and a device for determining pressure of a triton system and a storage medium, which are used for solving the problem of low design efficiency of the triton system in the related art. The technical scheme is as follows:

in a first aspect, a pressure determination method for a crank system is provided, the method including:

determining a gas flow model of the contained gas in a model of a crank system of the automobile;

obtaining attribute parameters of the gas in the gas flow model;

determining a pressure profile of the gas in the gas flow model based on the gas flow model and the property parameters of the gas.

Optionally, the crank system model comprises a valve chamber cover model;

the method for determining the gas flow model of the gas contained in the automobile crank system model comprises the following steps:

pre-processing the valve chamber cover model;

carrying out surface mesh division on the inner wall of the valve chamber cover model after pretreatment to obtain a plurality of surface meshes;

optimizing the plurality of surface grids;

generating a three-dimensional gas flow model associated with the valve chamber cover model based on the optimized plurality of surface meshes and three-dimensional mesh parameters.

Optionally, the optimizing the multiple surface grids includes:

determining an included angle between two adjacent edges in each of the plurality of face grids;

and when the included angle is not matched with the detection included angle, the included angle is adjusted to be the detection included angle so as to complete the optimization of the plurality of surface grids.

Optionally, the model of the triton system is a triton pipeline model;

acquiring construction information of the triton pipeline model;

and generating a one-dimensional gas flow model related to the curved pipeline model based on the construction information.

Optionally, the determining a pressure distribution of the gas in the gas flow model based on the gas flow model and the property parameters of the gas comprises:

and determining the pressure distribution condition of the gas in the three-dimensional gas flow model based on a three-dimensional gas flow model and a three-dimensional calculation model, and determining the pressure distribution condition of the gas in the one-dimensional gas flow model based on a one-dimensional gas flow model and a one-dimensional calculation model.

Optionally, after determining the pressure distribution of the gas in the gas flow model based on the gas flow model and the property parameters of the gas, the method further comprises:

determining an outlet pressure at a gas outlet in the three-dimensional gas flow model and an inlet pressure at a gas inlet in the one-dimensional gas flow model;

and when the outlet pressure is different from the inlet pressure, determining that the building of the automobile crank system model fails.

In a second aspect, a pressure determination device of a crank system is provided, the device comprising:

the device comprises a first determination module, a second determination module and a control module, wherein the first determination module is used for determining a gas flow model of contained gas in a triton system model of an automobile;

an obtaining module, configured to obtain attribute parameters of the gas in the gas flow model;

a second determination module for determining a pressure distribution of the gas in the gas flow model based on the gas flow model and the property parameters of the gas.

Optionally, the crank system model comprises a valve chamber cover model;

the first determining module comprises:

the processing submodule is used for preprocessing the valve chamber cover model;

the dividing submodule is used for carrying out surface grid division on the inner wall of the valve chamber cover model after pretreatment to obtain a plurality of surface grids;

the optimization submodule is used for optimizing the plurality of surface grids;

a first generation submodule for generating a three-dimensional gas flow model associated with the valve chamber cover model based on the optimized plurality of surface meshes and three-dimensional mesh parameters.

Optionally, the optimization submodule is configured to:

Optionally, the model of the triton system is a triton pipeline model;

the first determining module includes:

the obtaining submodule is used for obtaining the construction information of the triton pipeline model;

and the second generation submodule is used for generating a one-dimensional gas flow model related to the curved pipeline model based on the construction information.

Optionally, the second determining module is configured to:

Optionally, the apparatus further comprises:

a third determination module for determining an outlet pressure at a gas outlet in the three-dimensional gas flow model and an inlet pressure at a gas inlet in the one-dimensional gas flow model;

and the fourth determining module is used for determining that the building of the automobile crank system model fails when the outlet pressure is different from the inlet pressure.

In a third aspect, a computer-readable storage medium is provided, in which a computer program is stored, which computer program, when being executed by a processor, is adapted to carry out the method of any of the first aspect above.

The technical scheme provided by the embodiment of the invention has the beneficial effects that at least:

in the embodiment of the invention, the gas flow model for accommodating the gas in the model of the triton system can be determined, the attribute parameters of the gas can be obtained, and then the pressure distribution condition of the gas in the gas flow model can be determined according to the gas flow model and the attribute parameters of the gas, so that the quality of the design of the triton system can be measured according to the pressure distribution condition of the gas, and the design efficiency of the triton system is improved.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

FIG. 1 is a flow chart of a method for determining pressure in a crank system according to an embodiment of the present invention;

FIG. 2 is a flow chart of a pressure determination method for a alternate embodiment of the present invention;

FIG. 3 is a schematic structural diagram of a model of a communication system according to an embodiment of the present invention;

FIG. 4 is a schematic structural view of a valve chamber cover model according to an embodiment of the present invention;

FIG. 5 is a schematic diagram of a three-dimensional gas flow model provided by an embodiment of the present invention;

fig. 6 is a schematic structural diagram of a curved pipeline model according to an embodiment of the present invention;

FIG. 7 is a schematic diagram of data exchange between a three-dimensional computing model and a one-dimensional computing module according to an embodiment of the present invention;

FIG. 8 is a schematic structural diagram of a pressure determination device of the crank system according to an embodiment of the present invention;

fig. 9 is a schematic structural diagram of a first determining module according to an embodiment of the present invention;

FIG. 10 is a schematic structural diagram of another first determining module according to an embodiment of the present invention;

FIG. 11 is a schematic diagram of a pressure determination device of another embodiment of the present invention;

fig. 12 is a schematic structural diagram of a terminal according to an embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Before explaining the embodiments of the present invention in detail, an application scenario related to the embodiments of the present invention is explained.

At present, in order to avoid the pollution of the exhaust gas in the automobile to the environment and influence on the power output of the engine, the pressure distribution of the crank system must be determined in the design process of the automobile engine. However, at present, after a triton system is designed, whether the designed triton system meets the design requirements is tested, and when the design requirements are not met, the design of the triton system is modified. When the starter system is designed according to the mode, due to the fact that repeated tests are needed, time, labor and cost are wasted, and meanwhile, the difficulty in determining the pressure distribution condition inside the starter system is caused due to the fact that the flowing condition of waste gas inside the starter system is difficult to determine in the test process, and the efficiency of starter system design is reduced.

Based on such a scenario, the embodiment of the invention provides a pressure determination method for a triton system, which can improve the efficiency of the design of the triton system.

After describing an application scenario of the embodiment of the present invention, a detailed description will be given to a pressure determination method of a triton system according to the embodiment of the present invention with reference to the accompanying drawings.

Fig. 1 is a flowchart of a pressure determining method of a crank system according to an embodiment of the present invention, and referring to fig. 1, the method is applied in a terminal and includes the following steps.

Step 101: a gas flow model of the contained gas in a model of the vehicle's crank system is determined.

Step 102: obtaining property parameters of the gas in the gas flow model.

Step 103: determining a pressure profile of the gas in the gas flow model based on the gas flow model and the property parameters of the gas.

Optionally, the crank system model comprises a valve chamber cover model;

determining a gas flow model of a contained gas in a model of a triton system of an automobile, comprising:

pre-treating the valve chamber cover model;

optimizing the plurality of surface grids;

and generating a three-dimensional gas flow model related to the valve chamber cover model based on the optimized plurality of surface grids and the three-dimensional grid parameters.

Optionally, the optimizing the multiple surface grids includes:

determining an included angle between two adjacent edges in each of the plurality of surface grids;

when the included angle is not matched with the detection included angle, the included angle is adjusted to be the detection included angle so as to complete the optimization of the plurality of the surface grids.

Optionally, the model of the triton system is a model of a triton line;

acquiring construction information of the model of the curved pipeline;

a one-dimensional gas flow model associated with the model of the tortuous path is generated based on the build information.

Optionally, determining a pressure distribution of the gas in the gas flow model based on the gas flow model and the property parameters of the gas, includes:

and determining the pressure distribution of the gas in the three-dimensional gas flow model based on the three-dimensional gas flow model and the three-dimensional calculation model, and determining the pressure distribution of the gas in the one-dimensional gas flow model based on the one-dimensional gas flow model and the one-dimensional calculation model.

and when the outlet pressure is different from the inlet pressure, determining that the building of the crank system model of the automobile fails.

All the above optional technical solutions can be combined arbitrarily to form an optional embodiment of the present invention, which is not described in detail herein.

Fig. 2 is a flowchart of a pressure determining method of the crank system according to an embodiment of the present invention, and referring to fig. 2, the method includes the following steps.

Step 201: the terminal obtains a model of the vehicle.

The model of the song system may be a model of the user importing the terminal through a specified operation, or may be obtained by the terminal from other devices when receiving the model obtaining instruction.

It should be noted that the model obtaining instruction is used for obtaining a model of the triton system, the model obtaining instruction may be triggered by a user through an instruction operation, and the specified operation may be a click operation, a slide operation, a long press operation, and the like.

In addition, the vehicle model of the vehicle acquired by the terminal is a structural model of the vehicle, see fig. 3. Since there are components in a triton system that can hold gas and components that cannot hold gas, there is no gas present in these components. Therefore, in order to reduce the terminal calculation amount and save the operation resources of the terminal, after the terminal acquires the starter system model of the automobile, the starter system model needs to be preprocessed to obtain a structural model only including a structure capable of accommodating gas.

The parts for containing gas in the crank system are mainly a valve chamber cover and a crank pipeline, so that the pretreatment of the crank system model by the terminal can be to reserve at least one of the valve chamber cover model and the crank pipeline model and delete the models of other parts in the crank system model.

Step 202: the terminal determines a gas flow model of the contained gas in a model of the vehicle's crank system.

Since the pressure in the crank system is due to gas generation, in order to determine the pressure in the crank system, the terminal needs to determine a gas flow model of the crank system model of the car that contains the gas. As can be seen from the above, the model capable of accommodating gas in the model of the crank system may include a valve chamber cover model and a crank pipe model, and the gas flow model determined by the terminal is different according to different models.

The crank system model comprises a valve chamber cover model

Wherein, the terminal can carry out pretreatment on the valve chamber cover model; carrying out surface mesh division on the inner wall of the valve chamber cover model after pretreatment to obtain a plurality of surface meshes; optimizing the plurality of surface grids; and generating a three-dimensional gas flow model related to the valve chamber cover model based on the optimized plurality of surface grids and the three-dimensional grid parameters.

It should be noted that after the terminal deletes the model of other components in the model of the crank system, because there may be incomplete places in the valve chamber cover model and the model of the crank pipe, the terminal needs to perform a pretreatment on the valve chamber, and the pretreatment operation may be to repair the valve chamber cover model to ensure the integrity of the valve chamber cover model, see fig. 4.

After the inner wall of the valve chamber cover model is divided into the surface grids, the obtained multiple surface grids may have grids which do not meet the specification, and the grids which do not meet the specification influence the accuracy of the three-dimensional gas flow model.

The operation of the terminal for optimizing the plurality of surface grids may be: determining an included angle between two adjacent edges in each of the plurality of surface grids; when the included angle is not matched with the detection included angle, the included angle is adjusted to be the detection included angle so as to complete the optimization of the plurality of surface grids; and when any included angle in any surface grid is matched with the detection included angle, determining that the surface grid does not need to be optimized.

It should be noted that, in the embodiment of the present invention, the mismatch may refer to that the included angle is different from the detected included angle, or may refer to mismatch in other aspects. In addition, the face mesh is a triangular face mesh, and the detection angle may be set in advance, for example, the detection angle may be 20 degrees, 30 degrees, 40 degrees, or the like.

In addition, the operation of the terminal for preprocessing and surface mesh optimization of the valve chamber cover model and the operation of generating the three-dimensional gas flow model related to the valve chamber cover model can be performed in different applications or in the same application, for example, the operation of preprocessing and surface mesh optimization of the valve chamber cover model can be performed in a cleaning application, the operation of generating the three-dimensional gas flow model related to the valve chamber cover model can be performed in a three-dimensional computing application, and the like. When the method is performed in different applications, the terminal needs to introduce the optimized multiple surface meshes into an application for generating a three-dimensional gas flow model, for example, the terminal needs to introduce the multiple surface meshes in a cleaning application into a three-dimensional computing application. The terminal then generates a three-dimensional gas flow model associated with the valve chamber cover model based on the optimized plurality of surface meshes and the three-dimensional mesh parameters. The three-dimensional gas flow model is shown in figure 5.

Optionally, when the operation of preprocessing and surface mesh optimization on the valve chamber cover model and the operation of generating the three-dimensional gas flow model related to the valve chamber cover model are performed in different applications, the terminal may further perform deep optimization on the optimized surface meshes after introducing the optimized surface meshes into the application of generating the three-dimensional gas flow model.

It should be noted that the three-dimensional mesh parameters may include the shape, size, and the like of the volume mesh when the face mesh is generated into the volume mesh. For example, the three-dimensional mesh parameter may be a shape of a tetrahedron, a size of 1 cubic centimeter, or the like. The three-dimensional grid parameters can be preset parameters, or can be manually set by a user in real time after the terminal optimizes a plurality of surface grids.

Model of the system of the song leads to the pipeline model

The terminal can obtain the construction information of the model of the curved pipeline, and generate a one-dimensional gas flow model related to the model of the curved pipeline based on the construction information, and the structure of the model of the curved pipeline is shown in fig. 6.

It should be noted that the construction information may include the type and size of the PCV valve in the labyrinth pipeline, the pipeline construction structure, and the like, and the construction information may be set in advance, or may be manually set by a user when the terminal needs to generate the one-dimensional gas flow model.

In addition, after the terminal deletes the model of other parts in the model of the crank system, because the valve chamber cover model and the crank pipe model may have incomplete places, the terminal needs to perform pretreatment on the valve chamber, and the pretreatment operation can be to repair the valve chamber cover model to ensure the integrity of the valve chamber cover model.

Further, since the valve chamber cover model and the crank pipe model are part of the crank system model, and the gas in the valve chamber cover model is output to the crank pipe model, when the terminal determines the one-dimensional gas flow model and the three-dimensional gas flow model, it is also necessary to determine boundary parameters connected between the one-dimensional gas flow model and the three-dimensional gas flow model, and the boundary parameters between the one-dimensional gas flow model and the three-dimensional gas flow model are the same.

The boundary parameter may be set in advance, or may be manually set by a user in real time when the terminal determines a gas flow model of gas contained in a model of a vehicle crank system. For example, the boundary parameter may be a boundary temperature, a pressure, and the like.

Step 203: and the terminal acquires the attribute parameters of the gas in the gas flow model.

It should be noted that the property parameter of the gas may include the type, density, heat transfer rate, etc. of the gas, and the property parameter of the gas may be a default setting, may be set by a user in advance, or may be set manually by the user in real time when the terminal performs the operation of step 202.

As can be seen from the above, the applications of the terminal for generating the three-dimensional gas flow model and the one-dimensional gas flow model are different, and therefore, the terminal needs to acquire the property parameters of the gas in the application for generating the three-dimensional gas flow model and acquire the same property parameters of the gas in the application for generating the one-dimensional gas flow model.

Step 204: the terminal determines the pressure distribution of the gas in the gas flow model based on the gas flow model and the property parameters of the gas.

The terminal can determine the pressure distribution condition of the gas in the three-dimensional gas flow model based on the three-dimensional gas flow model and the three-dimensional calculation model, and determine the pressure distribution condition of the gas in the one-dimensional gas flow model based on the one-dimensional gas flow model and the one-dimensional calculation model.

In addition, when the terminal determines the pressure distribution of the gas in the three-dimensional gas flow model based on the three-dimensional gas flow model and the three-dimensional calculation model because the gas is flowing, the result obtained in the process of determining the pressure distribution is unstable because the gas is unstable. Therefore, the terminal can also determine whether the result is in a region-stable state in the determination process. That is, it is determined whether a variation value of a result of the pressure distribution condition is less than or equal to a preset variation value, and when the variation value is less than or equal to the preset variation value, it is determined that the pressure distribution condition of the gas in the three-dimensional gas flow model is obtained.

When the terminal determines the pressure distribution of the gas in the gas flow model based on the gas flow model and the property parameters of the gas, the terminal needs to determine through a one-dimensional calculation model and a three-dimensional calculation model respectively, and the gas in the three-dimensional gas flow model is communicated with the gas in the one-dimensional gas flow model. Therefore, before determining the pressure distribution of the gas in the gas flow model based on the gas flow model and the attribute parameters of the gas, the terminal needs to obtain TCP (Transmission Control Protocol) data exchange parameters between the one-dimensional calculation model and the three-dimensional calculation model. The TCP data exchange between the one-dimensional computational model and the three-dimensional computational model is seen in fig. 7.

Further, since the gas in the valve chamber cover model will be output to the crank pipe model, the pressure at the output port of the valve chamber cover model should be the same as the pressure at the inlet of the crank pipe model. Therefore, after determining the pressure distribution of the gas in the gas flow model, the terminal needs to determine the outlet pressure at the gas outlet in the three-dimensional gas flow model and the inlet pressure at the gas inlet in the one-dimensional gas flow model; and when the outlet pressure is the same as the inlet pressure, determining that the building of the triton system model is successful.

When the terminal determines that the model building of the triton system fails, the terminal can display a message for prompting the model building failure to prompt the user that the model building of the triton system fails, and returns to the operation of the step 202 to re-determine the pressure distribution condition of the triton system.

In the embodiment of the invention, the terminal can determine a three-dimensional gas flow model corresponding to a valve chamber cover in a triton system model and a one-dimensional gas flow model corresponding to a triton pipeline, acquire the attribute parameters of the gas, and then determine the pressure distribution condition of the gas in the gas flow model according to the three-dimensional gas flow model, the one-dimensional gas flow model and the attribute parameters of the gas. The terminal can realize real-time coupling calculation and data input and output between the one-dimensional calculation model and the three-dimensional calculation model, so that the pressure in the triton system model and the pressure distribution condition in the triton system model can be determined, and whether the construction of the triton system model is successful or not can be determined according to the pressure distribution condition, namely, the operation of measuring the quality of the design of the triton system according to the pressure distribution condition of gas is realized, and the efficiency of the design of the triton system is improved.

After explaining the pressure determining method of the triton system provided by the embodiment of the present invention, a pressure determining apparatus of the triton system provided by the embodiment of the present invention will be described next.

Fig. 8 is a block diagram of a pressure determination device of a crank system provided by an embodiment of the present disclosure, and referring to fig. 8, the device may be implemented by software, hardware, or a combination of the two. The device includes: a first determination module 801, an acquisition module 802, and a second determination module 803.

A first determination module 801 for determining a gas flow model of the gas contained in a model of a triton system of an automobile;

an obtaining module 802, configured to obtain attribute parameters of the gas in the gas flow model;

a second determining module 803, configured to determine a pressure distribution of the gas in the gas flow model based on the gas flow model and the property parameters of the gas.

Optionally, the crank system model comprises a valve chamber cover model;

referring to fig. 9, the first determination module 801 includes:

a processing submodule 8011 for preprocessing the valve chamber cover model;

the dividing submodule 8012 is used for carrying out surface mesh division on the inner wall of the valve chamber cover model after pretreatment to obtain a plurality of surface meshes;

an optimization submodule 8013, configured to perform optimization processing on the multiple surface grids;

a first generating submodule 8014 is configured to generate a three-dimensional gas flow model related to the valve chamber cover model based on the optimized plurality of surface meshes and three-dimensional mesh parameters.

Optionally, the optimization submodule 8013 is configured to:

Optionally, the model of the triton system is a triton pipeline model;

referring to fig. 10, the first determination module 801 includes:

an obtaining submodule 8015 for obtaining construction information of the model of the triton pipe;

a second generating sub-module 8016 is configured to generate a one-dimensional gas flow model related to the model of the tortuous path based on the constructed information.

Optionally, the second determining module 803 is configured to:

Optionally, referring to fig. 11, the apparatus further comprises:

a third determining module 804 for determining an outlet pressure at a gas outlet in the three-dimensional gas flow model and an inlet pressure at a gas inlet in the one-dimensional gas flow model;

a fourth determining module 805, configured to determine that the construction of the starter system model of the automobile fails when the outlet pressure is different from the inlet pressure.

In summary, in the embodiment of the present invention, the terminal may determine the three-dimensional gas flow model corresponding to the valve chamber cover in the crank system model and the one-dimensional gas flow model corresponding to the crank pipe, and obtain the attribute parameters of the gas, and then may determine the pressure distribution of the gas in the gas flow model according to the three-dimensional gas flow model, the one-dimensional gas flow model, and the attribute parameters of the gas. The terminal can realize real-time coupling calculation and data input and output between the one-dimensional calculation model and the three-dimensional calculation model, so that the pressure in the triton system model and the pressure distribution condition in the triton system model can be determined, and whether the construction of the triton system model is successful or not can be determined according to the pressure distribution condition, namely, the operation of measuring the quality of the design of the triton system according to the pressure distribution condition of gas is realized, and the efficiency of the design of the triton system is improved.

It should be noted that: in the pressure determination of the crank system provided in the above embodiment, when determining the pressure of the crank system, only the division of the above functional modules is used for illustration, and in practical applications, the above function distribution may be completed by different functional modules according to needs, that is, the internal structure of the device is divided into different functional modules, so as to complete all or part of the above described functions. In addition, the pressure determination device of the triton system provided by the above embodiment and the pressure determination method embodiment of the triton system belong to the same concept, and specific implementation processes thereof are detailed in the method embodiment and are not described herein again.

Fig. 12 is a block diagram illustrating a terminal 1200 according to an exemplary embodiment of the present invention. The terminal 1200 may be: a smartphone, a tablet, a laptop, or a desktop computer. Terminal 1200 may also be referred to by other names such as user equipment, portable terminal, laptop terminal, desktop terminal, and so forth.

In general, the terminal 1200 includes: a processor 1201 and a memory 1202.

The processor 1201 may include one or more processing cores, such as a 4-core processor, an 8-core processor, or the like. The processor 1201 may be implemented in at least one hardware form of a DSP (Digital Signal Processing), an FPGA (Field-Programmable Gate Array), and a PLA (Programmable Logic Array). The processor 1201 may also include a main processor and a coprocessor, where the main processor is a processor for Processing data in an awake state, and is also called a Central Processing Unit (CPU); a coprocessor is a low power processor for processing data in a standby state. In some embodiments, the processor 1201 may be integrated with a GPU (Graphics Processing Unit) that is responsible for rendering and drawing content that the display screen needs to display. In some embodiments, the processor 1201 may further include an AI (Artificial Intelligence) processor for processing a computing operation related to machine learning.

Memory 1202 may include one or more computer-readable storage media, which may be non-transitory. Memory 1202 may also include high-speed random access memory, as well as non-volatile memory, such as one or more magnetic disk storage devices, flash memory storage devices. In some embodiments, a non-transitory computer readable storage medium in the memory 1202 is used to store at least one instruction for execution by the processor 1201 to implement the pressure determination method of the triton system provided by the method embodiments herein.

In some embodiments, the terminal 1200 may further optionally include: a peripheral interface 1203 and at least one peripheral. The processor 1201, memory 1202, and peripheral interface 1203 may be connected by a bus or signal line. Various peripheral devices may be connected to peripheral interface 1203 via a bus, signal line, or circuit board. Specifically, the peripheral device includes: at least one of radio frequency circuitry 1204, touch display 1205, camera 1206, audio circuitry 1207, pointing component 1208, and power source 1209.

The peripheral interface 1203 may be used to connect at least one peripheral associated with I/O (Input/Output) to the processor 1201 and the memory 1202. In some embodiments, the processor 1201, memory 1202, and peripheral interface 1203 are integrated on the same chip or circuit board; in some other embodiments, any one or two of the processor 1201, the memory 1202, and the peripheral interface 1203 may be implemented on separate chips or circuit boards, which are not limited by the present embodiment.

The Radio Frequency circuit 1204 is used for receiving and transmitting RF (Radio Frequency) signals, also called electromagnetic signals. The radio frequency circuit 1204 communicates with a communication network and other communication devices by electromagnetic signals. The radio frequency circuit 1204 converts an electric signal into an electromagnetic signal to transmit, or converts a received electromagnetic signal into an electric signal. Optionally, the radio frequency circuit 1204 comprises: an antenna system, an RF transceiver, one or more amplifiers, a tuner, an oscillator, a digital signal processor, a codec chipset, a subscriber identity module card, and so forth. The radio frequency circuit 1204 may communicate with other terminals through at least one wireless communication protocol. The wireless communication protocols include, but are not limited to: metropolitan area networks, various generation mobile communication networks (2G, 3G, 4G, and 5G), wireless local area networks, and/or WiFi (Wireless Fidelity) networks. In some embodiments, the rf circuit 1204 may further include NFC (Near Field Communication) related circuits, which are not limited in this application.

The display screen 1205 is used to display a UI (User Interface). The UI may include graphics, text, icons, video, and any combination thereof. When the display screen 1205 is a touch display screen, the display screen 1205 also has the ability to capture touch signals on or over the surface of the display screen 1205. The touch signal may be input to the processor 1201 as a control signal for processing. At this point, the display 1205 may also be used to provide virtual buttons and/or a virtual keyboard, also referred to as soft buttons and/or a soft keyboard. In some embodiments, the display 1205 may be one, providing the front panel of the terminal 1200; in other embodiments, the display 1205 can be at least two, respectively disposed on different surfaces of the terminal 1200 or in a folded design; in still other embodiments, the display 1205 may be a flexible display disposed on a curved surface or on a folded surface of the terminal 1200. Even further, the display screen 1205 may be arranged in a non-rectangular irregular figure, i.e., a shaped screen. The Display panel 1205 can be made of LCD (Liquid Crystal Display), OLED (Organic Light-Emitting Diode), or other materials.

Camera assembly 1206 is used to capture images or video. Optionally, camera assembly 1206 includes a front camera and a rear camera. Generally, a front camera is disposed at a front panel of the terminal, and a rear camera is disposed at a rear surface of the terminal. In some embodiments, the number of the rear cameras is at least two, and each rear camera is any one of a main camera, a depth-of-field camera, a wide-angle camera and a telephoto camera, so that the main camera and the depth-of-field camera are fused to realize a background blurring function, and the main camera and the wide-angle camera are fused to realize panoramic shooting and VR (Virtual Reality) shooting functions or other fusion shooting functions. In some embodiments, camera assembly 1206 may also include a flash. The flash lamp can be a monochrome temperature flash lamp or a bicolor temperature flash lamp. The double-color-temperature flash lamp is a combination of a warm-light flash lamp and a cold-light flash lamp and can be used for light compensation under different color temperatures.

The audio circuitry 1207 may include a microphone and a speaker. The microphone is used for collecting sound waves of a user and the environment, converting the sound waves into electric signals, and inputting the electric signals into the processor 1201 for processing or inputting the electric signals into the radio frequency circuit 1204 to achieve voice communication. For stereo capture or noise reduction purposes, multiple microphones may be provided at different locations of terminal 1200. The microphone may also be an array microphone or an omni-directional pick-up microphone. The speaker is used to convert electrical signals from the processor 1201 or the radio frequency circuit 1204 into sound waves. The loudspeaker can be a traditional film loudspeaker or a piezoelectric ceramic loudspeaker. When the speaker is a piezoelectric ceramic speaker, the speaker can be used for purposes such as converting an electric signal into a sound wave audible to a human being, or converting an electric signal into a sound wave inaudible to a human being to measure a distance. In some embodiments, the audio circuitry 1207 may also include a headphone jack.

The positioning component 1208 is configured to locate a current geographic Location of the terminal 1200 for implementing navigation or LBS (Location Based Service). The Positioning component 1208 can be a Positioning component based on the united states GPS (Global Positioning System), the chinese beidou System, the russian graves System, or the european union galileo System.

The power supply 1209 is used to supply power to various components in the terminal 1200. The power source 1209 may be alternating current, direct current, disposable or rechargeable. When the power source 1209 includes a rechargeable battery, the rechargeable battery may support wired or wireless charging. The rechargeable battery may also be used to support fast charge technology.

In some embodiments, terminal 1200 also includes one or more sensors 1210. The one or more sensors 1210 include, but are not limited to: acceleration sensor 1211, gyro sensor 1212, pressure sensor 1213, fingerprint sensor 1214, optical sensor 1215, and proximity sensor 1216.

The acceleration sensor 1211 can detect the magnitude of acceleration on three coordinate axes of the coordinate system established with the terminal 1200. For example, the acceleration sensor 1211 may be used to detect components of the gravitational acceleration in three coordinate axes. The processor 1201 may control the touch display 1205 to display the user interface in a landscape view or a portrait view according to the gravitational acceleration signal collected by the acceleration sensor 1211. The acceleration sensor 1211 can also be used for acquisition of motion data of a game or a user.

The gyro sensor 1212 may detect a body direction and a rotation angle of the terminal 1200, and the gyro sensor 1212 may collect a 3D motion of the user on the terminal 1200 in cooperation with the acceleration sensor 1211. The processor 1201 can implement the following functions according to the data collected by the gyro sensor 1212: motion sensing (such as changing the UI according to a user's tilting operation), image stabilization while shooting, game control, and inertial navigation.

Pressure sensors 1213 may be disposed on a side bezel of terminal 1200 and/or an underlying layer of touch display 1205. When the pressure sensor 1213 is disposed on the side frame of the terminal 1200, the user's holding signal of the terminal 1200 can be detected, and the processor 1201 performs left-right hand recognition or shortcut operation according to the holding signal collected by the pressure sensor 1213. When the pressure sensor 1213 is disposed at a lower layer of the touch display screen 1205, the processor 1201 controls the operability control on the UI interface according to the pressure operation of the user on the touch display screen 1205. The operability control comprises at least one of a button control, a scroll bar control, an icon control and a menu control.

The fingerprint sensor 1214 is used for collecting a fingerprint of the user, and the processor 1201 identifies the user according to the fingerprint collected by the fingerprint sensor 1214, or the fingerprint sensor 1214 identifies the user according to the collected fingerprint. When the user identity is identified as a trusted identity, the processor 1201 authorizes the user to perform relevant sensitive operations, including unlocking a screen, viewing encrypted information, downloading software, paying, changing settings, and the like. The fingerprint sensor 1214 may be provided on the front, back, or side of the terminal 1200. When a physical button or vendor Logo is provided on the terminal 1200, the fingerprint sensor 1214 may be integrated with the physical button or vendor Logo.

Optical sensor 1215 is used to collect ambient light intensity. In one embodiment, the processor 1201 may control the display brightness of the touch display 1205 according to the ambient light intensity collected by the optical sensor 1215. Specifically, when the ambient light intensity is high, the display brightness of the touch display panel 1205 is increased; when the ambient light intensity is low, the display brightness of the touch display panel 1205 is turned down. In another embodiment, processor 1201 may also dynamically adjust the camera head 1206 shooting parameters based on the ambient light intensity collected by optical sensor 1215.

A proximity sensor 1216, also known as a distance sensor, is typically disposed on a front panel of the terminal 1200. The proximity sensor 1216 is used to collect a distance between the user and the front surface of the terminal 1200. In one embodiment, when the proximity sensor 1216 detects that the distance between the user and the front surface of the terminal 1200 gradually decreases, the processor 1201 controls the touch display 1205 to switch from the bright screen state to the dark screen state; when the proximity sensor 1216 detects that the distance between the user and the front surface of the terminal 1200 gradually becomes larger, the processor 1201 controls the touch display 1205 to switch from the breath screen state to the bright screen state.

That is, not only is the embodiment of the present invention provide a terminal including a processor and a memory for storing executable instructions of the processor, wherein the processor is configured to execute the method in the embodiment shown in fig. 1 and fig. 2, but also the embodiment of the present invention provides a computer readable storage medium, wherein a computer program is stored in the storage medium, and when the computer program is executed by the processor, the computer program can implement the pressure determination method of the triton system in the embodiment shown in fig. 1 and fig. 2.

Those skilled in the art will appreciate that the configuration shown in fig. 12 is not intended to be limiting of terminal 1200 and may include more or fewer components than those shown, or some components may be combined, or a different arrangement of components may be used.

It will be understood by those skilled in the art that all or part of the steps for implementing the above embodiments may be implemented by hardware, or may be implemented by a program instructing relevant hardware, where the program may be stored in a computer-readable storage medium, and the storage medium may be a read-only memory, a magnetic disk or an optical disk.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims

1. A method of pressure determination for a crank system, the method comprising:

determining a gas flow model containing gas in a crank system model of an automobile, wherein the crank system model comprises a valve chamber cover model;

obtaining attribute parameters of the gas in the gas flow model;

determining a pressure profile of the gas in the gas flow model based on the gas flow model and the property parameters of the gas;

pre-processing the valve chamber cover model; carrying out surface mesh division on the inner wall of the valve chamber cover model after pretreatment to obtain a plurality of surface meshes; optimizing the plurality of surface grids; generating a three-dimensional gas flow model associated with the valve chamber cover model based on the optimized plurality of surface meshes and three-dimensional mesh parameters.

2. The method of claim 1, wherein the optimizing the plurality of face meshes comprises:

3. The method of claim 1, wherein the model of the triton system is a model of the triton line;

acquiring construction information of the triton pipeline model;

4. The method of any of claims 1-3, wherein said determining a pressure distribution of said gas in said gas flow model based on said gas flow model and said gas property parameters comprises:

5. The method of claim 4, wherein after determining the pressure distribution of the gas in the gas flow model based on the gas flow model and the property parameters of the gas, further comprising:

6. A pressure determination device of a crank system, the device comprising:

the device comprises a first determining module, a second determining module and a control module, wherein the first determining module is used for determining a gas flow model of gas contained in a crank system model of an automobile, and the crank system model comprises a valve chamber cover model;

a second determination module for determining a pressure distribution of the gas in the gas flow model based on the gas flow model and the property parameters of the gas;

the first determining module includes:

7. The apparatus of claim 6, the optimization submodule to:

8. A computer-readable storage medium, characterized in that the storage medium has stored therein a computer program which, when being executed by a processor, carries out the method of any one of claims 1-5.