270 results about "Compression ratio" patented technology

The present invention provides a composite multi-compression mechanism vacuum pump with a high compression ratio and high pumping speed. The multi-compression mechanism includes three types: a turbine, a traction wheel, and a vortex blade array. The traction wheel is divided into a first-stage traction wheel and a second-stage traction wheel. A first-stage exhaust port and a second-stage exhaust port are respectively provided on the base, and a valve is provided on the first-stage exhaust port. In the first pumping stage, the valve is opened, and most of the gas flows through the turbine and the first-stage traction wheel and is discharged from the first-stage exhaust port. A small part of the gas flows through the turbine, the first-stage traction wheel, the second-stage traction wheel, and the vortex blade array in sequence and is discharged from the second-stage exhaust port. In the second pumping stage, the valve is closed, and the gas flows through the turbine, the first-stage traction wheel, the second-stage traction wheel, and the vortex blade array and is discharged from the second-stage exhaust port. The present invention solves the problem that high pumping speed and high vacuum cannot be achieved at the same time and that the molecular pump must be equipped with a pre-stage pump by using multiple compression mechanisms in series. The present invention can replace a traditional set of multiple vacuum pumps with a single vacuum pump, significantly reducing costs.

A heat pump system for a vehicle may include an ejector configured to increase the pressure of the introduced refrigerant and discharge the refrigerant with the increased pressure to increase the pressure and flow amount of the refrigerant, thereby being capable of decreasing the refrigerant load of the compressor by reducing the compression ratio of the compressor, and reducing the cooling load and improving the cooling performance.

The present invention relates to a centrifugal vacuum pump group for large flow and low pressure applied to the technical field related to vacuum pumps. It adopts a three-stage series arrangement to obtain a high compression ratio, which can meet the target requirement of lower absolute pressure, and the first-stage vacuum pump adopts double-sided air intake, which can meet the target requirement of large flow; in addition, the compressed gas is cooled by spray cooling in the internal circulation, thereby replacing the heat exchanger cooling in the prior art, effectively reducing the floor space of the vacuum pump group, and the structure is compact and the cost is lower; in addition, during the internal circulation cooling process, it can automatically perform adaptive deformation according to the temperature of the gas. When the gas temperature is high, it can automatically stretch, and then form a plurality of cooling plates spaced apart from each other in the water-cooling cylinder, so that the contact range with the gas is greatly improved, so that the heat of the gas can be quickly taken away when passing through the water-cooling cylinder, thereby achieving cooling.

The invention belongs to the technical field of compressors, and particularly relates to an MVR (mechanical vapor recompression) vapor compressor, a detection control system with multi-stage recognition capability is introduced on the basis of compressor basic equipment, and the system collects vapor parameters, mechanical states and process state data in real time through a multi-dimensional state sensing module; the operation stage identification module intelligently divides the system operation process into an initial starting stage, a transition stage and a stable operation stage according to the data; and the self-adaptive control module calls a corresponding preset strategy set according to the identified different stages and dynamically adjusts the rotating speed and the compression ratio of the compressor, for example, low-speed soft start is executed in the initial stage of start, smooth tracking adjustment is performed in the transition period, and accurate and stable control is implemented in the stable operation period. Self-adaptive and refined regulation and control of the whole process from starting to stabilization of the system are achieved, mechanical and electrical impact is effectively reduced, variable working condition adaptability and operation stability are improved, and the overall energy efficiency is optimized.

The utility model relates to a diesel engine and a combustion chamber thereof. The combustion chamber of the diesel engine comprises a main body, a boss part and a pit part, the boss part is arranged on one side, far away from the top surface, of the main body, and is formed by protruding towards the direction close to the top surface; the pit part is connected with the boss part, the pit part is formed by sinking in the direction away from the top face, and a necking opening is formed in the end, close to the top face, of the pit part; in the depth direction, the range of the distance H1 from the top face to the deepest point of the pit part is 0.11 D-0. 15D, in the first direction, the range of the size D1 of the necking opening is 0.49 D-0. 53D, and D is the cylinder diameter of the diesel engine. Through the arrangement of the H1 and the D1, the volume of the combustion chamber is reduced, then a high compression ratio can be obtained, high compression pressure is provided through the high compression ratio, efficient combustion under the partial load working condition can be achieved, and the combustion efficiency is guaranteed; and meanwhile, the air utilization rate can be improved, fuel and air can be fully mixed and combusted, the fuel consumption of the engine is effectively reduced, and the requirements of high performance and low emission of the diesel engine are met.

The invention relates to the technical field of engines, in particular to a piston combustion chamber for a diesel and natural gas engine and the engine, and the piston combustion chamber for the diesel and natural gas engine comprises an omega-shaped pit. The straight opening type omega-shaped pit structure is adopted, compared with a traditional ignition type combustion chamber, the ineffective conical volume in the center of the combustion chamber is removed, the top dead center injection diffusion combustion mode is better met, the air utilization rate is higher, the compression ratio is higher, and higher heat efficiency can be better achieved; compared with a traditional necking omega-shaped diesel engine combustion chamber, a plurality of necking structures are removed, the first annular concave face and the second annular concave face are designed, the characteristic of natural gas injection is better met, the front end space of flames is fully released, the air utilization rate is increased, the heat transfer loss is reduced, and the combustion efficiency and the heat efficiency are improved; due to the design of the large-curvature concave surface, the problems of heat load concentration and particle friction caused by a sharp structure can be avoided, and the problems of out-of-control combustion, knocking and engine damage are reduced.

The embodiment of the invention provides an engine supercharging system and a vehicle, and relates to the technical field of vehicle manufacturing. The electronic supercharger is constructed into a two-stage supercharger, the electronic supercharger is provided with a first-stage compressed air flow channel and a second-stage compressed air flow channel, a turbine compressed air flow channel is formed in the turbocharger, and the first-stage compressed air flow channel, the second-stage compressed air flow channel and the turbine compressed air flow channel are distributed in series. And the three-stage compressed air inlets are communicated with the air inlet to form three-stage compressed air inlet to the air inlet. According to the engine supercharging system provided by the embodiment of the invention, gas can be supercharged for three times through the first-stage compressed air flow channel, the second-stage compressed air flow channel and the turbine compressed air flow channel, so that the air compression ratio can be increased, the turbine hysteresis phenomenon is avoided, the air inlet pressure response speed is increased, and transient air supply to an engine is ensured; the operation stability and combustion efficiency of the engine are guaranteed, the fuel economy of the engine is improved, and the driving experience is improved.

The invention relates to the technical field of energy-saving refrigeration, in particular to an energy-saving and environment-friendly carbon dioxide refrigeration system and method, and the system comprises a state analysis module, an energy efficiency analysis module, a compression ratio calculation module, a risk judgment module and an adjustment optimization module. According to the method, the system fluctuation trend is captured by analyzing the outlet pressure of the evaporator and the outlet pressure of the condenser and combining the operation state vectors generated by the suction flow and the exhaust flow of the compressor, the fluctuation trend is associated with the energy efficiency ratio change of the compressor, and dynamic energy efficiency fluctuation is provided; the compression ratio is continuously monitored, the air flow and the opening degree of an expansion valve are adjusted, stable operation of the system is ensured, the optimal energy efficiency is achieved, compression ratio adjustment is optimized in real time by analyzing fluctuation of the compression ratio and deviation between the fluctuation and an adjusting interval, the system is adjusted according to real-time data through a dynamic adjusting mechanism, energy efficiency fluctuation is restrained, and flexibility and stability are improved. Energy waste is reduced, and environmental changes are responded, and automatic adjustment is performed to maximize energy utilization.

A method for the autonomous control of a surface unit of an oil well or gas well down-hole rod pump to provide for a reduction of gas interference and an increase in production, the method providing for autonomous adjustment of one or more pump operation characteristics, including one or more of dwell time, polished rod travel, compression ratio, and pump cycle rate, and the method including autonomous determination of a weight transfer position, autonomous determination of a rate of weight transfer, determination of a stretch factor of the polished rod, and autonomous adjustment of one or more of the pump operation characteristics for successive pump cycles of the down-hole pump installation based upon the weight transfer position, the rate of weight transfer, and the stretch factor.

A gas spring-powered fastener driver includes an outer cylinder, an inner cylinder positioned within the outer cylinder, and a moveable piston positioned within the inner cylinder. The gas spring-powered fastener driver further includes a driver blade attached to the piston and movable therewith between a top-dead-center (TDC) position and a driven or bottom-dead-center (BDC) position. The outer cylinder and the inner cylinder define a first total volume in which gas is located when the driver blade is in the TDC position. The outer cylinder and the inner cylinder define a second total volume, in which gas is located when the driver blade is in the BDC position. A compression ratio of the second total volume to the first total volume is 1.7:1 or less. And, a force acting on the driver blade when located in the TDC position is at least 90 pound-force (lbf) but no more than 450 pound-force (lbf).

A piston (22) for an internal combustion engine (12) includes a piston skirt (64) and a piston crown (70) attached to the piston skirt and including a combustion face (72). The combustion face forms a piston rim (74) and a combustion bowl (78). A bowl rim (82) defines an intersection of the combustion bowl and the piston rim, and a reentry surface (84) defining a reentry angle extends between the bowl rim and the bowl outer wall. A ratio of a bowl depth dimension coincident with the piston central axis to a compressed height dimension coincident with the piston central axis is from about 0.30 to about 0.35.

Method for controlling the internal combustion engine (4) of a motor vehicle during the operation of the motor vehicle, wherein the internal combustion engine (4) has at least two operating modes in which different torque ranges are provided, and the control has a switching function for switching the internal combustion engine between the at least two operating modes, comprising the steps: Performing route forecasting during operation to determine route data for upcoming track sections, Predicting the torque requirement for upcoming track sections based on track data, The switching function for changing the internal combustion engine from a first operating mode to at least the second operating mode for an upcoming section of track may only be activated if the track forecast for the upcoming section shows that the operating point of the internal combustion engine lies within a torque range for at least a predetermined period of time, which covers the torque requirement predicted for this section of track by at least the second operating mode. characterized by the fact that the operating modes are realized through different compression ratios of the internal combustion engine.

The application relates to a fan control method based on a compression ratio and an air energy heat pump. The fan control method comprises the following steps: controlling a fan to operate at a basic rotating speed, and calculating a current time compression ratio; acquiring a reference compression ratio of a compressor, calculating a fan target rotating speed according to the current time compression ratio and the reference compression ratio, and controlling the fan to operate according to the target rotating speed. The control method can control the fan rotating speed through a PID adjustment mode based on the change rate of the compression ratio and the reference compression ratio when the heat pump is in a partial load or low load working condition, can more accurately match the refrigeration or heating demand of the heat pump, can match the rotating speed of the fan with the actual required evaporation capacity, can control the energy consumption of the fan on the basis of improving the evaporation capacity of the evaporator, and can make the energy efficiency ratio of the system reach better optimization.

The invention belongs to the technical field of Internet of Vehicles communication, and discloses a heavy diesel vehicle remote monitoring method and system based on edge computing, and the method comprises the steps: constructing a rule engine according to a predefined transmission rule, and deploying the rule engine to an edge computing node; the data stream of the heavy diesel vehicle is transmitted to an edge computing node, a rule engine is used for evaluating each data field in the data stream, a corresponding transmission level is distributed, and the transmission level comprises a first-level field, a second-level field and a third-level field; and matching a preset transmission strategy according to the data field with the allocated transmission level, executing differentiated data processing, and transmitting a processing result to an enterprise cloud platform through a network transmission layer. According to the method, low-value data is filtered in real time through edge calculation, the invalid data uploading amount is reduced, and data transmission is reduced; in addition, through a high compression ratio and a delay transmission technology, the bandwidth occupation of low-value data is reduced, and the utilization efficiency of network resources is optimized.

The application discloses an air conditioner control method and device, an air conditioner and a storage medium, and belongs to the technical field of air conditioners. The application obtains the discharge pressure and the return air pressure of the compressor; controls the operation of the flow regulating device according to the discharge pressure and the return air pressure, detects the discharge pressure and the return air pressure of the compressor in real time, then adjusts the flow regulating device according to the detected discharge pressure and return air pressure, adjusts the flow regulating device, and effectively avoids the situation that the compression ratio of the compressor is increased, further protects the compressor, and prolongs the service life of the compressor.

The present disclosure provides a method and system for operating an engine. The system and method for operating an engine including a compression ratio connecting rod for adjusting the engine's compression ratio are described. The system and method provide different ways to diagnose the presence or absence of engine misfire in response to engine operating regions that may be more or less susceptible to torsional engine crankshaft vibration. In one example, engine misfire may be determined in response to a force applied to the engine's compression ratio changing connecting rod.

An engine (100), comprising: a housing (1), a piston (3), and an intake valve (2). The housing (1) is provided with a combustion chamber (11) and an intake passage (12) in communication with the combustion chamber (11). The piston (3) is movably arranged in the combustion chamber (11). The intake valve (2) is movably arranged between the combustion chamber (11) and the intake passage (12). When the piston (3) moves to a preset position, the intake valve (2) is closed, the compression ratio of the engine (100) is A and the expansion ratio thereof is B, wherein 8.6≤A≤14.2, and 15≤B≤18. Also disclosed are a powertrain and a vehicle.

The utility model relates to the technical field of valve detection, in particular to an energy-saving and low-consumption valve testing device, which comprises a tank body and a plurality of valve pipes, an independent accommodating space is constructed in the tank body, an air inlet communicated with the accommodating space is arranged on the outer side of the tank body, each valve pipe is fixedly connected to the outer side of the tank body, and the valve pipes are connected with the air inlet. All the valve pipes are communicated with the interior of the containing space. According to the valve testing device, the effect of stabilizing pressure is achieved through the independent containing space in the tank body and the air inlet formed in the outer side of the tank body, the problem that in a traditional method, due to the large gas compression ratio, the pressure value fluctuation amplitude is large is solved, the probability of valve damage is reduced, and the service life of the valve is prolonged. And a plurality of valve pipes communicated with the accommodating space are arranged on the outer side of the tank body, so that a plurality of valves can be tested at the same time, the test time is saved, and the loss of compressed gas in the test process is reduced.

The invention discloses a cold start control method and device of an engine, electronic equipment and a storage medium. The method comprises the steps that in response to starting of an engine of the vehicle, environment parameters of the environment where the vehicle is located and first starting condition parameters of the engine are obtained, and the first starting condition parameters are used for representing condition parameters of the engine after the engine is started; based on the environment parameters and the first starting condition parameters, whether the vehicle is in an engine cold starting scene or not is determined; under the condition that the vehicle is in the engine cold start scene, an engine of the vehicle is controlled to be in a first Miller cycle state, the first Miller cycle state is used for representing that the engine is in the Miller cycle state, and the target parameter ratio of the engine is smaller than a preset ratio; the target parameter ratio is used for representing the ratio of the expansion ratio of the gas in the cylinder of the engine to the actual compression ratio. According to the method and the device, the technical problems that the operation efficiency of the engine is low and the emission exceeds the standard under the cold start condition in the prior art are solved.

The invention belongs to the technical field of engines, and discloses a fuel and air separated compression type internal combustion engine which comprises a cylinder A and a cylinder B. The internal combustion engine further comprises a driving mechanism arranged on the outer wall of the cylinder A; the connecting block is mounted on the outer walls of the cylinder A and the cylinder B through a mounting mechanism; wherein the driving mechanism comprises a chain wheel A, the outer wall of the chain wheel A is in transmission connection with a chain wheel B through a chain, the outer wall of the chain wheel B is fixedly connected with a bevel gear A, the outer wall of the bevel gear A is meshed with a bevel gear B, and the outer wall of the bevel gear B is fixedly connected with a half gear; through separated compression design of the cylinder A and the cylinder B on air and fuel, the compression ratio is greatly increased to strengthen the acting efficiency, the power performance of the internal combustion engine is improved, the problem that a traditional internal combustion engine is low in efficiency is solved, the combustion efficiency of a medium in the cylinder B can be improved through engine waste heat, and then the utilization rate of the waste heat is increased.

The utility model belongs to the technical field of special devices of compression type garbage trucks, and particularly discloses a variable cross-section scraper which comprises an inner buckling arc-shaped panel and a back plate of an upper arch arc-shaped structure, the arc-shaped angle of the back plate and the panel enables component force in the compression direction to be larger, the compression ratio is improved, and when a feeding device dumps garbage, the compression ratio is improved. The back plate structure ensures that garbage is easily guided into a pre-compression area at the rear end of the lower portion of the filler, the garbage is not deposited on the scraper, the garbage is firstly extruded and crushed in a pre-compression cavity and then enters a compression cavity in the process that the scraper rotates forwards, the scraper rotates to the foremost end in the compression cavity, the garbage is extruded again, and the garbage is compressed again. And in the upward moving process of the sliding plate and under the reverse acting force of the push plate, the garbage is extruded and formed through bidirectional stress, after the structure is optimized, the scraping plate can increase the compression force borne by the garbage, plastic deformation of the garbage as much as possible in the loading operation process is achieved, the compression ratio is increased, and the net load rate of the whole vehicle is increased.

This application discloses a molecular pump, comprising: a housing assembly, a base having an outlet, and a housing fastened to the base and having an inlet; a turbine assembly rotatably disposed between the base and the housing, including a blade portion, an extension coaxially connected to the blade portion, a bent portion connected to the intersection of the blade portion and the extension portion, and an annular space formed between the bent portion and the extension portion; a traction cylinder assembly, including a first traction cylinder coaxially disposed on the base and partially inserted into the annular space of the turbine assembly; and a meandering channel, which sequentially includes a pumping section communicating with the inlet, a first compression section, a second compression section, a third compression section, and a fourth compression section communicating with the outlet. This molecular pump can improve its compression ratio and pumping performance with almost no increase in volume, thereby meeting the requirements of molecular pumps in high-end application scenarios.

This invention discloses an intelligent calculation method for the thermal compression ratio of a diesel engine based on machine learning, comprising the following steps: S1, acquiring diesel engine thermal operation data and generating a state data sequence; S2, performing continuous-time state encoding on the state data sequence to construct a state representation sequence; S3, performing feature contribution analysis on the state representation sequence to generate a correlated feature sequence; S4, performing state correlation propagation and compression ratio optimization calculation on the correlated feature sequence to obtain a predicted compression ratio sequence; S5, constructing a theoretical pressure curve and an in-cylinder pressure curve based on the predicted compression ratio sequence, and calculating the curve deviation sequence; S6, performing feedback updates based on the curve deviation sequence and outputting the calculation results. This invention, combined with dual-state flow liquid neural networks, possesses advantages such as strong adaptability to thermal engine states, high accuracy in compression ratio calculation, high stability in complex operating condition analysis, and strong continuous dynamic optimization capability.

The utility model belongs to the technical field of engines, and provides an anti-explosion structure of a turbocharged engine, which comprises a controller, a knock sensor and an air inlet control electromagnetic valve, the knock sensor is mounted on an engine main body and is positioned in the middle of a cylinder body of the engine, and the air inlet control electromagnetic valve is mounted on the controller. The air inlet control electromagnetic valve is arranged on an air inlet of an exhaust gas turbocharger of the engine body, the signal input end of the controller is connected with the signal output end of the anti-explosion shock sensor, and the signal output end of the controller is connected with the air inlet control electromagnetic valve. The knock sensor can detect the vibration condition of the engine in real time, when knock is detected, the controller receives a knock signal and controls the opening degree of the air inlet control electromagnetic valve, then the compression ratio of the engine is controlled, and therefore knock can be restrained. Not only can the power of the engine be fully released, but also knocking can be inhibited.

The refrigeration device using an R454C refrigerant has, as compared with the refrigeration device using an R32 refrigerant, a higher ratio of a discharge pressure to a suction pressure of a compressor, and a larger impact load applied to a bearing portion of a crankshaft, so that the bearing portion is easily damaged. An air conditioning device (1) comprises a refrigerant circuit (10) and an outdoor unit control unit (71). The refrigerant circuit (10) has a compressor (11). The refrigerant circuit (10) circulates a refrigerant by the compressor (11) to perform a refrigeration cycle. The outdoor unit control unit (71) performs control relating to the refrigeration cycle. The compressor (11) has a compression chamber (Sc) in which the refrigerant is compressed, and an injection pipe (53) that communicates with the compression chamber (Sc). A ratio of a discharge pressure to a suction pressure of the compressor (11) is 4.5 times or more and 6.25 times or less a compression ratio of the compression chamber (Sc). The outdoor unit control unit (71) performs control such that a first ratio, which is a ratio of the flow rate of the refrigerant flowing through the injection pipe (53) to the flow rate of the refrigerant circulating through the refrigerant circuit (10), is 79% or more.

The application discloses a swash plate compressor, a regulating system and a regulating method for a CO2 high-temperature heat pump, which comprises an oil-gas cylinder, the upper portion of the oil-gas cylinder is connected with a box body, a plurality of CO2 cylinder assemblies are evenly arranged in the box body, and the CO2 cylinder assemblies are connected with the oil-gas cylinder; corresponding through holes are arranged on the oil-gas cylinder and the CO2 cylinder assemblies, piston assemblies are arranged in the through holes, and the piston assemblies and the through holes cooperatively form variable-volume chambers; the chambers are communicated with an oil pool through electromagnetic valve groups, the oil pool is communicated with high-pressure gas, the oil pool and the high-pressure gas cooperatively control the amount of hydraulic oil in the chambers through the electromagnetic valve groups, and the lower portion of the oil-gas cylinder is provided with a swash plate transmission structure matched with the piston assemblies. The application has the advantages of simple structure, adjustment of the amount of hydraulic oil in the chambers, change of the distance between the piston assemblies, change of the displacement and compression ratio of CO2 gas, reduction of operation energy consumption, and good realization of standardization, miniaturization and light weight.

The invention provides a vehicle test data processing method and a vehicle, and relates to the technical field of vehicle test. According to the method, the compression mode and the transmission bandwidth of each kind of driving data can be determined according to the importance of each kind of driving data; for each kind of driving data, the driving data is compressed according to the compression mode corresponding to the driving data, and because the transmission bandwidth of each kind of driving data is positively correlated with the corresponding importance, the compression loss corresponding to the data compression mode of each kind of driving data is negatively correlated with the importance of the driving data. And the compression ratio corresponding to the data compression mode of each type of driving data is negatively correlated with the importance of the driving data, so that the more important driving data is allocated with a larger bandwidth, the smaller the compression ratio is, and the lower the compression loss is; the transmission timeliness of important driving data and the quality of the important driving data received by the service platform can be improved.

The bore is reduced while the stroke is not lengthened to maintain the required displacement. [Solution] If we consider a square combustion chamber with a displacement of approximately 500cc, a bore and stroke of 54mm x 54mm x 4 pistons results in a very small bore and stroke of 494.6cc, compared to a normal single-piston engine with a bore and stroke of 85.72mm x 85.72mm and a displacement of 494.6cc. With an area ratio of 2.52 to 1 compared to a normal single-piston engine, the 4 pistons will experience more than 2.5 times the combustion pressure if the compression ratio is the same. If a normal single-piston 3-cylinder 1484cc engine produces 100 horsepower, then a 4-piston engine would theoretically produce 250 horsepower. And all this with the fuel efficiency of a naturally aspirated 1.5L engine. Although there are considerable mechanical losses due to the movement of four pistons and two crankshafts, the resulting increase in power more than compensates for these losses.

The invention provides an air conditioning system and a control method and device thereof. The air conditioning system comprises a first heat exchanger, a second heat exchanger, an electronic expansion valve and at least two compressors, the compressor which is started firstly serves as an advanced compressor, and the compressor which is started later serves as a lagging compressor; the detection device is used for detecting the running state of the advanced compressor; in the control device, an obtaining module is used for obtaining the compression ratio of an advanced compressor under the condition that an inlet guide vane of the advanced compressor reaches a full-open state; the first control module is used for executing load shedding operation on the advanced compressor according to the compression ratio of the advanced compressor and keeping an inlet guide vane in a full-open state; and the second control module is used for starting the lagging compressor when determining that the load shedding of the leading compressor is finished. According to the method, it is ensured that the advanced compressor is in a stable state and is not prone to surging, meanwhile, the lagging compressor can overcome the minimum resistance to be started under the working condition, the cut-in and cut-out reliability of the compressor is guaranteed, and downtime is effectively avoided.

The invention discloses a method for evaluating the sealing performance of a fuel cell rubber sealing ring at a low temperature, and relates to the technical field of fuel cell sealing. Measuring a compression force-strain curve at 23 + / -2 DEG C; gradually reducing the temperature to a target temperature point and reading the compression force; establishing a hyper-elastic model based on the stress-strain curve; inputting material properties to perform low-temperature sealing force simulation and calibrating a thermal expansion coefficient; calculating the leakage rate through a temperature-compression ratio-leakage rate quantitative correlation model; and determining a minimum compression ratio design boundary according to the leakage rate threshold value. According to the application, sealing performance evaluation is upgraded from experience qualitative judgment to data-driven quantitative design, the sealing reliability and research and development efficiency of the fuel cell stack in extreme low-temperature environments such as-40 DEG C are remarkably improved, and a scientific basis is provided for commercial application of fuel cells in alpine regions.