289 results about "Automobile design" patented technology

The invention relates to the technical field of automobile design, and particularly discloses an automobile wind resistance optimization design method based on a machine learning model, and the method comprises the steps: collecting data of different automobile types, and carrying out the cleaning and standardization processing; constructing a wind resistance prediction model, training the model by using the preprocessed data, and minimizing a prediction error by adjusting model parameters; key design variables are selected, the variation range of the key design variables is determined, and a parameterized model is constructed; selecting sample points in a design variable space, generating a corresponding geometric model, calculating a wind resistance coefficient and establishing a sample point database; dividing sample point data into a training set and a test set, optimizing a machine learning model, searching an optimal solution in combination with an optimization algorithm, and iteratively updating the model by increasing sample points until the precision requirement is met; an optimal design variable combination is determined, an optimized automobile geometric model is generated, CFD simulation verification is carried out, and a design scheme containing detailed parameters and optimization results is output.

The invention relates to an automobile reliability improving method, device and equipment based on FMEA data and a medium, and belongs to the technical field of automobile reliability design, the method is used for early warning risks in the automobile design stage and predicting faults in the automobile operation stage, and the method comprises the steps that automobile faults are layered based on the obtained FMEA data; a fault layering model is generated, and after semantic information extraction is carried out on the FMEA data, a fault database is established; blocks and attributes of the blocks are determined based on the fault database, and a block attribute library associated with the FMEA data is constructed based on the attributes of the blocks; in the design stage, risk early warning is performed on the block scheme in the design stage based on the block attribute library, and in the operation stage, the fault probability prediction is performed on the block scheme by utilizing the fault prediction model which is completely trained to obtain a fault prediction result, so that the reliability of the automobile is improved.

The utility model provides a pneumatic steering wheel adjusting structure, and belongs to the technical field of automobile design and manufacturing. Comprising a first ball screw fixed on a steering column of a steering wheel; the first piston cylinder is fixedly connected with a nut of the first ball screw; the second ball screw is fixed on a steering column of the steering wheel; the second piston cylinder is fixedly connected with a nut of the second ball screw; the compressor forms a closed loop with the upper and lower layers of the first piston cylinder and the second piston cylinder respectively; the adjusting switch of the pneumatic steering wheel is configured to change the flowing mode of air in the closed loop through conversion between a plurality of configurations. By means of the advantage that the air source can be shared with other system structures, use of electrical equipment is reduced, the cost for adjusting the steering wheel is reduced, the reliability of adjusting the steering wheel is improved, the cost is reduced, the reliability is improved, and meanwhile the overall driving experience is not affected.

The invention relates to the technical field of vehicles, in particular to a self-adaptive adjusting method and device for an automobile rear tail door, an automobile and a program product.The method comprises the steps that a tail door opening instruction is received, and the instruction type of the tail door opening instruction is judged; if the instruction type is a remote control instruction or an in-vehicle control instruction, acquiring surrounding environment data of the rear tail door of the vehicle; whether the vehicle rear tail door meets the opening condition or not is judged based on the surrounding environment data of the vehicle rear tail door, if the vehicle rear tail door meets the opening condition, the vehicle rear tail door is controlled to be opened to the maximum height, the body height of the passenger is obtained, and the height of the vehicle rear tail door is adjusted to the target opening height according to the body height of the passenger. Therefore, the problem that in an existing automobile design, when rear tail doors of many vehicles are used, the rear tail doors are difficult to use for short passengers is solved, the requirements of the passengers of different heights are met in an intelligent mode, and the human-computer interaction experience and the overall safety of the automobile are improved.

The present invention discloses a suspension structure and parameter design method for suppressing high-frequency vibration of a vehicle body by three measures in the automotive field. An existing stiffness-damping inertia autonomous controllable suspension and a wheel high-frequency dynamic vibration absorber are combined to form a suspension for suppressing high-frequency vibration of a vehicle body by three measures. On the basis of vehicle body mass, wheel mass and equivalent stiffness, the mass of the wheel high-frequency dynamic vibration absorber and the minimum stiffness of the suspension in comfort mode are determined according to automobile design requirements. The damping and inertia of the inertia tube, the stiffness and damping of the wheel high-frequency dynamic vibration absorber are optimized with the goal of minimizing the objective function. When the vehicle is traveling on a bad road, the high-frequency vibration suppression measure transmitted from the wheel to the vehicle body is expanded to three measures of wheel high-frequency dynamic vibration absorption, vibration isolation and anti-resonance vibration reduction that work in coordination with each other, so that the advantage of the wheel high-frequency dynamic vibration absorption measure in cutting the peak of the high-frequency vibration of the vehicle body and the advantage of the anti-resonance vibration reduction measure in narrowing the bandwidth of the high-frequency vibration frequency band of the vehicle body are organically combined, and the vibration of the vehicle body in the high-frequency vibration band is completely flattened.

The utility model relates to a car door map pocket with an adjustable cup holder, and relates to the technical field of car design and manufacturing. The car door map bag with the adjustable cup stand comprises a map bag body, a door plate lower body and an adjustable cup stand mechanism assembly. A first guide rail and a second guide rail are arranged on the inner surface of the door plate lower body side by side, a first guide rail clamping groove is formed in the first guide rail, and a second guide rail clamping groove is formed in the second guide rail; the adjustable cup stand mechanism assembly comprises a cup stand body, a cup stand elastic block, a spring, a rotating shaft and a metal fastener. According to the map bag, the adjustable cup stand is arranged in the map bag, so that water bottles and water cups with different diameters can be stably placed, and noise caused by shaking is avoided.

The invention relates to the field of automobile design, in particular to an equipment scheduling method and device, equipment and a storage medium, and aims to realize reasonable scheduling of test equipment. The method comprises the following steps: receiving an equipment use application sent by a user, wherein the equipment use application comprises a user identity code, an equipment identity code of target equipment and a reserved time grid; according to the device identity code and the time grid, determining whether the reservation time of a plurality of different users corresponding to the target device has conflicts; determining a priority weight corresponding to the equipment use application according to the user identity code of each user under the condition that the reservation time has a conflict; and according to the priority weight corresponding to each equipment use application and the time grid corresponding to each user, distributing the use right of the target equipment to the corresponding user.

The invention relates to the technical field of automobile design and development, in particular to a method and device for predicting abnormal sound of a safety belt retractor, equipment and a medium. According to the method, the installation mode frequency value and the installation point dynamic stiffness value of the safety belt retractor in the vehicle research and development process are calculated through the target vehicle finite element model, and the calculation results are compared and analyzed with the installation mode frequency critical value and the installation point dynamic stiffness critical value when the safety belt retractor generates abnormal sound; therefore, the risk of abnormal sound of the safety belt retractor can be quickly and accurately predicted, structure optimization suggestions are proposed as soon as possible, the potential abnormal sound problem can be avoided in the design stage, and thus it is ensured that a mass-produced vehicle does not have the risk of abnormal sound of the safety belt retractor.

The invention relates to the technical field of automobile design, in particular to an intelligent generation type design method of an anti-collision beam, which comprises the following steps: firstly, performing experimental analysis on the anti-collision beam to obtain a section image comprising the anti-collision beam and performance response data corresponding to the section image; performing image recognition and text extraction on the section image; fusing the recognized image and the extracted text by using a multi-modal multi-layer fusion model to obtain a multi-modal design variable; training the constructed conditional variation network by using the multi-modal design variables and the performance response data corresponding to the multi-modal design variables to obtain a conditional variation model; generating design variables by using the conditional variation model, and predicting performance response data corresponding to the variables; optimal performance response data are screened out from the obtained performance response data, and then the optimal design scheme of the anti-collision beam to be designed is obtained. According to the method, the optimal design scheme is determined by using the conditional variation network, and the efficiency and the precision of optimization design are effectively improved.

The invention discloses a method and device for determining a defrosting and demisting area of a vehicle side window, electronic equipment and a medium, and belongs to the technical field of automobile design man-machine engineering. According to the method, on the basis of the eye ellipse model, the rearview mirror observation model, the vehicle side window model and the like under the whole vehicle development coordinate system, the first design reference area corresponding to the vehicle left side window and the multiple first defrosting and demisting actually-needed areas are determined, and then the defrosting and demisting design area of the vehicle left side window is obtained through integration. The defrosting and demisting design area of the left side window of the vehicle can be directly output to a vehicle-mounted air conditioner design engineer to be used for designing a left side air outlet of the vehicle-mounted air conditioner, and the defrosting and demisting area of the left side window glass is reasonably determined at least in the vehicle design stage on the premise that basic use requirements of a user are met and the actual use comfort of the vehicle is guaranteed; it is ensured that the left window of the vehicle has good defrosting and demisting effects, the requirement that drivers with different heights and weights observe the left outside rear-view mirror in the actual driving process can be met, and the driving safety is improved.

The invention belongs to the technical field of vehicle chassis coordination control, and particularly relates to an automobile chassis domain unified yaw motion control method and device based on a three-step method. Comprising the following steps: calculating a required yaw target; sensor, vehicle state and road surface information are acquired, and internal information resource sharing is realized; fault failure recognition of software and hardware is achieved, and corresponding driving safety is guaranteed. Aiming at an automobile of a four-wheel steering distributed driving electric automobile, a yaw stability integrated control system of a chassis domain based on a three-step method is designed; distributing the additional yawing moment, and distributing the additional yawing moment to four rounds for execution; and executing the distributed yawing moment control instruction and executing a front and rear wheel turning angle command to realize expected vehicle yawing dynamic control. Based on intelligent driving requirements of L2 + and above levels, the dynamic performance and the handling stability of the vehicle are improved, and the problem that yaw control in a traditional drive-by-wire chassis system is insufficient is solved.

The utility model discloses an automobile brake hard tube assembly with a vibration reduction structure, which relates to the technical field of automobile design, and comprises a brake hard tube main body, the outer ring of the brake hard tube main body is provided with two fixing mechanisms for realizing that the brake hard tube main body can adapt to different installation positions of automobiles, and each fixing mechanism comprises an adaptive component, a vibration reduction component and a vibration reduction component, the bottom end of the rotating shaft is rotationally connected with a sleeve rod, and a sliding rod is slidably mounted in the sleeve rod. The lower vibration reduction assembly is arranged at the top of the adaptive assembly; the upper vibration reduction assembly is arranged at the top of the lower vibration reduction assembly, the lower vibration reduction assembly is movably and rotatably connected with the adaptation assembly through the sleeve rod by arranging the adaptation assembly, so that the installation positions of different angles are adapted, the sliding rod slides in the sleeve rod, the fixing bolt is rotated, the sleeve rod and the sliding rod are extruded, the position of the sliding rod is fixed, and the vibration reduction effect is achieved. Therefore, the remote installation position can be adapted.

The invention discloses an automobile three-view generation method, device and equipment based on multi-view splicing training, and relates to the technical field of computer vision and image generation, and the method comprises the steps: collecting three-view pictures of an automobile to construct an image set, and carrying out the labeling of the image set, and obtaining a training set; and training a LoRA model based on the training set, and adjusting a FLUX model based on the trained LoRA model, thereby realizing three-view generation of the target vehicle based on the adjusted FLUX model. According to the method and the device, the three views of the same vehicle can be generated at one time when the automobile design drawing is drawn, the consistency among the three views is ensured, the generated image is high in quality and rich in details, and an efficient and convenient vehicle three-view generation scheme is provided for a user.

The invention discloses an adjusting method of an automobile seat backrest small table board, control equipment and an automobile, and relates to the technical field of automobile design, the adjusting method of the automobile seat backrest small table board comprises the steps that first coordinate information of a passenger heel point, second coordinate information of a passenger H point and third coordinate information of a center point of the opened small table board are obtained; calculating actual position information of the center point of the small table board and the relative passenger H point based on the third coordinate information of the center point of the small table board and the second coordinate information of the passenger H point, and determining target position information of the center point of the small table board relative to the passenger H point according to a preset association relationship between the first coordinate information and the second coordinate information; and determining an adjustment scheme of the small table plate according to the actual position information and the target position information. By the adoption of the method, after the passenger in the back row sits, the small table board can be controlled to conduct self-adaptive adjustment according to the position of the passenger, so that the small table board reaches the better position, and the riding experience of the passenger in the back row is improved.

The utility model relates to a central control screen structure capable of rotating manually, and relates to the technical field of automobile design and manufacturing. The central control screen structure capable of rotating manually comprises a central control screen, a screen support, a damper, a swing rod, a first tubular beam metal plate support, an instrument board body, a screen rear shell, a second tubular beam metal plate support and an auxiliary telescopic rod. According to the utility model, the central control screen is fixed on the instrument panel tubular beam bracket through the rotating pin shaft, so that the central control screen can rotate leftwards and rightwards, and the screen is kept fixed under the condition that the acting force value is lower than a certain value through the force limiting effect of the damper.

The utility model discloses a greasy filth truck model with a detachable empennage, which comprises a greasy filth truck body, and the tail part of the greasy filth truck body is provided with an empennage assembly; the empennage assembly comprises an empennage and a mounting support, the bottom of the mounting support is detachably connected with the oil sludge vehicle body, and the top of the mounting support is detachably connected with the empennage. According to the greasy filth truck model with the detachable empennage, the empennage assembly is arranged on the greasy filth truck body, and the mounting bracket is used for respectively realizing detachable connection between the greasy filth truck body and the empennage, so that the type of the empennage can be conveniently adjusted, and the empennage can be conveniently adjusted by replacing different mounting brackets; the adjustment of postures such as closing, opening and opening angle of the empennage can be realized; the use requirement for performance analysis and verification of different types of empennages and empennages with different installation postures on the same oil sludge vehicle body can be met, and the vehicle design efficiency can be effectively improved.

The utility model relates to the technical field of mounting equipment, in particular to integrated high-integration mounting equipment for diesel heating and water heating equipment of a motor home, which comprises a fixed base, a heat exchanger fixing support and an oil pump fixing support. The oil pump fixing support is fixedly connected with the fixing base and located on the side, close to the heat exchanger fixing support, of the fixing base, the fixing base is provided with a diesel heating fixing hole, and the diesel heating fixing hole is formed in the fixing base and penetrates through the fixing base. A special fixing position is provided, the high-integration-level space utilization rate is achieved, and the touring car is close to the design direction of the car; and meanwhile, the bracket is also suitable for a vehicle-mounted bumpy moving environment, so that the stability of the equipment is improved.

The invention discloses a method for assisting in generating a special fire emergency car model through artificial intelligence, and belongs to the crossing field of artificial intelligence and car design. The method aims to overcome the defects of traditional forest fire fighting vehicle design, and the forest fire rescue efficiency and the firefighter safety are improved. Data such as fire fighting truck 2D drawings, forest fire cases, fire fighting demand feedback and the like are widely collected through multiple channels and are cleaned, labeled and structured, and effective data are divided into a training set, a verification set and a test set according to a specific proportion. A deep learning model (such as GAN or VAE) is selected and optimized according to the design characteristics of the forest fire-fighting vehicle, and the model is stabilized through a large amount of iterative training. A design keyword is input to generate a 2D sketch, big data analysis is utilized to screen, evaluate and optimize for multiple times, a 3D model framework is generated by means of a 3D generation AI model, fine optimization is performed after multi-dimensional evaluation, and finally a 3D model which is vivid in color and meets actual combat requirements is generated. By utilizing the artificial intelligence technology, the design efficiency is greatly improved, the adaptability of the automobile to the forest environment is enhanced, the safety of firefighters is guaranteed, the industrial technology progress is promoted, and remarkable economic and social benefits are achieved.

The utility model discloses a door plate middle plug-in wrapping assembly capable of changing luminous patterns, which belongs to the technical field of automobile design and comprises a light-transmitting wrapping assembly and a light-transmitting mechanism, the light-transmitting mechanism is mounted on the light-transmitting wrapping assembly, the light-transmitting wrapping assembly comprises a light-transmitting skin, a light-transmitting 3D mesh and a light-transmitting framework, the light-transmitting 3D mesh is adhered to the light-transmitting framework, and the light-transmitting 3D mesh is mounted on the light-transmitting skin. The light-transmitting mechanism comprises a support, a gear, a motor, a rack, a shading modeling plate and a light source, the motor is installed on the support, the gear is matched with the motor and meshed with the rack, the shading modeling plate is connected to the rack through a screw, and the light source plate is installed on the support through a screw. According to the utility model, the conversion of the light-transmitting modeling pattern mapped on the light-transmitting skin is realized, and the light and shadow atmosphere of the whole vehicle is improved. The structure is mainly of a mechanical structure, the reliability is higher, the light source plate does not need a large number of LED bulbs, only LED lamp strips are needed, the number of needed wire harnesses is small, and the cost is low.

The application relates to the technical field of honeycomb sandwich structures, in particular to a double-material curved-edge inner-concave negative Poisson's ratio sandwich plate design method considering material gradient and structure gradient design simultaneously. The method comprises an upper end plate, a core layer and a lower end plate, the core layer is arranged between the upper end plate and the lower end plate and is fixedly connected with the upper end plate and the lower end plate; the core layer is a double-material curved-edge negative Poisson's ratio gradient honeycomb layer structure, and the core layer is obtained by stretching the rear of a double-material inner-concave curved-edge negative Poisson's ratio cell transversely. The internal structure of the plate layer is restructured, so that the problem that lightweight safety cannot be considered simultaneously in the automobile design and production process is solved.

The utility model relates to a rear face blowing air opening assembly structure of an auxiliary instrument panel, and relates to the technical field of automobile design and manufacturing. The auxiliary fascia console rear face blowing air opening assembly structure comprises an air outlet panel assembly, an air opening shell assembly, an electric heating plate and an intelligent surface unit. The air port shell assembly comprises an air duct, blades, a first stepping motor and a second stepping motor, the blades are arranged at the front end of the air duct, the electric heating plate is arranged in the middle of the rear end of the air duct, the blades are connected with the first stepping motor and the second stepping motor through gears, and the first stepping motor is connected with the second stepping motor through gears. The air outlet panel assembly comprises an air opening panel and an intelligent surface unit. According to the rear face blowing air opening assembly structure of the auxiliary fascia console, the space utilization rate is optimized, the overall consistency of appearance surface treatment is improved, meanwhile, the aesthetic feeling, the science and technology feeling and the fashion feeling of interiors are increased, and the overall perception quality state is optimized.

The application discloses a vehicle side window defrosting and defogging area determination method and device, electronic equipment and medium, and belongs to the technical field of automobile design human-machine engineering. The application determines a first design reference area and a plurality of first defrosting and defogging actual need areas corresponding to a left side window of a vehicle based on an eye ellipse model, a rearview mirror observation model and a vehicle side window model in a whole vehicle development coordinate system, and then integrates to obtain a defrosting and defogging design area of the left side window of the vehicle. The defrosting and defogging design area of the left side window of the vehicle can be directly output to a vehicle air conditioner design engineer for left side air outlet design of the vehicle air conditioner. On the premise of meeting the basic use requirements of users and ensuring the actual use comfort of the vehicle, the defrosting and defogging area of the left side window glass is reasonably determined at least in the vehicle design stage, the left side window of the vehicle has good defrosting and defogging effect, and the needs of drivers with different heights and weights for observing the left outside rearview mirror during actual driving are met, so that the driving safety is improved.

The invention provides an automobile design change process data processing method and device, a medium and electronic equipment. The method comprises the steps of obtaining multi-source heterogeneous original design change information through a standardized interface in response to a design change process initiated by a management user for a target automobile change project; performing multi-level classification on the original design change information to obtain at least one category of intermediate design change information; extracting structured target design change information from the intermediate design change information through a pre-trained large language model; and creating a design change application ledger, and importing the target design change information and auditor information auditing the target design change information into the design change application ledger to trigger an approval program of the automobile design change. According to the invention, the efficiency of automobile design change process data processing can be improved.

The utility model provides a pipeline mounting structure and an automobile, and relates to the field of automobile design and manufacturing. The utility model provides a pipeline mounting structure. The pipeline mounting structure comprises a fixed part and a rotating part, a first through hole is formed in the fixing piece, and the fixing piece is fixedly connected with a vehicle structure; the rotating piece is at least partially arranged in the first through hole and is fixed relative to the fixing piece in the axial direction of the first through hole, and a second through hole used for fixing a pipeline is formed in the rotating piece; and the rotating piece is arranged to rotate along the inner circumferential wall of the first through hole under the twisting driving of the pipeline. Through the optimized design of the pipeline mounting structure, the torsional shear stress in the torsional deformation process of the pipeline can be reduced, the fatigue damage easily caused after the pipeline is twisted for multiple times for a long time is inhibited, and the service life of the pipeline is prolonged.

The application discloses a kind of automobile driver knee space design methods, it is characterized in that, acquire several driving postures data, based on data obtains each percentile human knee space limit line, and stretch to form knee space limit surface, then its process is encapsulated into knee space limit surface template and the template is called in automobile design process to complete design.The application can avoid the problem of poor comfort caused by insufficient driver knee space in the design stage.The driver knee space limit surface obtained by the application can be used to limit the design of instrument panel and center console, to leave enough knee movement space for the driver, and improve the driving comfort of the driver.

The invention provides a design method, device and equipment of a bumper modeling surface, a medium and a product, and relates to the technical field of automobile design. The method comprises the following steps: acquiring a whole vehicle arrangement diagram, and extracting position information of a plurality of target parts influencing a bumper modeling surface; constructing a design constraint model diagram of the bumper modeling surface according to the position information of the multiple target parts, and designing the bumper modeling surface based on the design constraint model diagram; if the functional part area is located outside the pendulum bob collision area and the first gap size is larger than the second gap size, it is determined that bumper modeling surface collision verification succeeds; and when the air inlet proportion is larger than or equal to the preset air inlet proportion, it is determined that air inlet verification of the bumper modeling surface succeeds. According to the method, the multiple factors influencing the bumper modeling are classified and checked, the design quality of the bumper modeling surface is improved, and therefore the number of times of modifying the bumper modeling surface due to insufficient design in the later period is reduced.

The present invention relates to a body frame of an unmanned passenger car and a preparation method thereof, and belongs to the technical field of automobile design and manufacturing. The body frame of the unmanned passenger car of the present invention includes an upper annular closed frame located at the top, a front windshield frame located at the front end, and a rear windshield frame located at the rear end; the entire frame structure is covered with columns and crossbeams, oblique beams, and joint structures, and a lower longitudinal main ring structure is formed through a longitudinal side waist beam and front and rear crossbeam structures, and a longitudinal double main ring structure is formed with the top longitudinal main ring structure formed by the top frame side beams. The front and rear frame crossbeams of the top frame, and the corresponding left and right frame side front and rear columns, respectively, constitute a transverse double main ring structure, which greatly improves the overall rigidity and stability, and enhances the functional needs of responding to emergencies and protecting the safety of passengers.

The invention discloses an automobile network topology based on a domain centralized architecture and an application method and equipment, and relates to the technical field of automobile design and manufacture, the automobile network topology comprises an automobile body domain controller, a power domain controller, an intelligent driving domain controller and a cabin domain controller, the CAN of the automobile network topology comprises a diagnosis CAN, a power CAN, a chassis CAN, an automobile body CAN, an information CAN and a fuel CAN, and each domain controller comprises a plurality of ECUs as child nodes. The power domain controller and the child node ECU of the power domain controller are mounted on the power CAN; the intelligent driving domain controller and the child node ECU of the intelligent driving domain controller are mounted on the chassis CAN. According to different platform vehicle model architectures of pure electricity, hybrid power and fuel oil, only topological cutting is needed, the topological structure does not need to be changed, and generalization and serialization of parts can be achieved.

The utility model provides an air handling unit structure and an automobile, and relates to the field of automobile design and manufacturing. The air handling unit structure is used for being arranged in a front cabin of an automobile. The air handling unit structure comprises an air inlet module, an evaporator module, an air blower module and a double-temperature-area air dividing module, two independent temperature areas are arranged in the double-temperature-area air dividing module, and mode air doors are arranged at the ends, away from the air blower module, of the two temperature areas; wherein the air inlet module is used for switching inner / outer circulation air inlet and guiding air into the air conditioning box structure, and the double-temperature-area air inlet module is arranged to be capable of independently adjusting the temperature of air flowing through each temperature area and capable of switching the mode air door state to convey air exhausted from each temperature area into a passenger compartment in different air outlet modes. The air conditioning box structure is arranged in the front cabin of the automobile, so that the space of an instrument desk can be saved, the convenience in maintenance, disassembly and assembly is improved, the noise in the cabin of the automobile is reduced, and the NVH (Noise Vibration and Harshness) performance of the automobile is effectively improved.

The present invention discloses a method for optimizing the seal at the three-joint surface of a range-extended engine, and relates to the field of automobile design technology. The method includes CAE analysis of a three-dimensional model of the three-joint surface of the range-extended engine under loaded working conditions, including simulation analysis of the mode, sealing surface pressure, bolt stress, slip and opening of the three-dimensional model. If the mode, sealing surface pressure, bolt stress, slip and opening of the three-dimensional model do not meet the third preset standard, the sealing surface structure of the three-dimensional model is optimized until the mode, sealing surface pressure, bolt stress, slip and opening of the three-dimensional model meet the third preset standard. Therefore, in this application, the mode, sealing surface pressure, bolt stress, opening and slip at the three-joint surface are measured and judged based on CAE analysis, so that the range-extended engine can effectively improve the oil leakage problem in the design and test stage to avoid the oil leakage problem during its working process.