1545 results about "Automotive engine" patented technology

The invention relates to the technical field of die-casting, in particular to an automobile engine end cover die-casting device and a die-casting method.The automobile engine end cover die-casting device comprises a movable die and a fixed die, an ejector pin and a top plate are arranged in the movable die, and an eccentric wheel rotationally connected with the top plate is further arranged on the top plate; a movable driving plate is further arranged in the movable mold and is in transmission connection with the eccentric wheel, the rotatable eccentric wheel is arranged on the top plate, the driving plate in transmission connection with the eccentric wheel is arranged in the movable mold, in the mold splitting process, the eccentric wheel is guided to rotate through movement of the driving plate, and therefore vibration force in the axial direction of the ejector pin is generated; and the knocking effect of the ejector pin on the formed part is enhanced, so that the ejector pin can continuously and effectively knock the formed part so as to quickly eject the formed part out of the cavity, and the problem that the traditional die-casting die cannot be quickly demolded by single knocking is solved.

The invention discloses a casting device for an automobile engine water pump shell, and relates to the technical field of casting, the casting device comprises a supporting assembly, a supply assembly, a die-casting assembly, a die assembly and a cooling assembly, the supporting assembly comprises a bottom frame, the top of the bottom frame is fixedly connected with a supporting plate, and the top of the supporting plate is fixedly connected with a sliding rail. According to the casting machining device, when the water pump shell of the automobile engine is cast and machined, the multiple sets of molds are arranged above the rotating disc, through cooperative operation of a first motor, a smelting furnace, a second motor, a hydraulic cylinder, a first fan and a second fan, sequential machining of the multiple sets of molds can be achieved, and the smelting furnace can continuously work; and a single smelting furnace can be matched with a plurality of sets of molds for casting at the fixed position at the same time, it is ensured that molten aluminum is stably supplied in the automatic operation state, the safety risk existing when the molten aluminum is manually carried is effectively avoided, and the safety of casting machining of the engine water pump shell is improved.

The invention relates to the technical field of automobile engine cooling, in particular to an engine cooling device which comprises a heat dissipation shell and a cooling assembly. A liquid inlet is formed in the top wall of the heat dissipation shell, a liquid outlet is formed in the bottom wall of the heat dissipation shell, the liquid inlet communicates with a liquid inlet pipe, the liquid outlet communicates with a liquid outlet pipe, the end, close to the heat dissipation shell, of the liquid inlet pipe communicates with the end, close to the heat dissipation shell, of the liquid outlet pipe through a cooling pipe, and a plurality of heat dissipation fins distributed at intervals in the first direction are arranged in the heat dissipation shell. A plurality of through holes are formed in one side of the heat dissipation shell in a penetrating mode in the second direction, and the second direction is perpendicular to the first direction; the cooling assembly comprises a fan unit, the fan unit is located on the side, close to the through hole, of the heat dissipation shell, and the fan unit is slidably connected to the heat dissipation shell in the first direction so as to adjust the distance between the fan unit and the heat dissipation shell. The position of the fan can be adjusted according to the actual heat dissipation condition, so that the heat dissipation effect is improved.

According to the new energy automobile engine crankshaft near-net-shape forming process method, a placing mechanism comprises a placing box, two opening and closing doors are installed on the front side of the placing box, the two opening and closing doors are arranged in a bilateral symmetry mode, and observation windows are arranged on the opening and closing doors; through mutual cooperation of the L-shaped fixing plate, the clamping gear, the central gear, a rocking handle, a fixing plate, an annular plate, a guide plate, a sliding plate, a clamping plate, an attaching rod, a driven groove wheel, a belt, a driving groove wheel, a motor, a bottom plate and the like, when a crank needs to be dyed, the crank can be clamped and fixed, meanwhile, the crank can be driven to rotate, and the crank can be conveniently and rapidly dyed. According to the crank dyeing device, through mutual cooperation of the vertical plate, the lifting plate, the transverse plate, the vertical pipe, the connecting rod, the circular plate, the pretreatment box, the cleaning agent box, the coloring agent box and other parts, the crank can be pretreated, colored and cleaned.

The utility model discloses an automobile engine cover hinge assembly correcting device which comprises a base plate and a top plate, the base plate and the top plate are fixedly connected through a vertical plate, the base plate is provided with a first fixing seat, the lower end face of the top plate is provided with a linear motor module, the linear motor module is provided with an electric cylinder, and the electric cylinder is provided with a second fixing seat. One end of the electric cylinder is connected with a driving plate, a hinge assembly main body is placed on the first fixing seat, and the hinge assembly main body is located between the first fixing seat and the driving plate; the hinge assembly is fixed in a negative pressure adsorption mode, the connection mode between the hinge assembly and the automobile body and the connection mode between the hinge assembly and the engine cover are simulated, the electric cylinder drives the driving plate to do axial reciprocating motion, and the opening and closing action of the automobile engine cover is simulated; when the hinge arm of the hinge assembly is in the bent state, the position of the second hinge base relative to the first hinge base is adjusted and corrected through the linear motor module, manual correction is replaced, and the correction efficiency is improved.

The invention discloses an automobile engine which comprises an engine body, a crankshaft and an air conditioner generator. The air conditioner generator comprises a stator and a rotor and is placed on the front portion of the automobile engine and driven by the crankshaft of the automobile engine, and the axis of the stator of the air conditioner generator is coaxial to the axis of a main shaft neck of the crankshaft of the automobile engine. The automobile engine can supply power to vehicle-mounted air conditioner systems, and the air conditioner generator is arranged at the front end of the crankshaft of the automobile engine. The automobile engine requires no belt for driving and is simple in structure and convenient for the vehicle-mounted air conditioner system to adopt the whole distribution structure.

The utility model discloses an automobile engine cylinder body machining clamp, which relates to the field of automobile engines and comprises a supporting bottom block, end fixing plates are horizontally and symmetrically welded at two ends of the supporting bottom block, a top horizontal groove is horizontally arranged on the top surface of the supporting bottom block, and an end box body is fixedly arranged at one end of the supporting bottom block. A vertical rod is in butt joint with the top face of the supporting bottom block in a vertically upward mode, a side connecting block is horizontally arranged on one side edge of the vertical rod in a clamped mode, a vertical plate body is connected to the end, away from the vertical rod, of the side connecting block, and a fixing bottom plate is horizontally and fixedly arranged on the side edge, away from the side connecting block, of the vertical plate body. A clamping top block is horizontally arranged on the side edge, away from the side connecting block, of the vertical plate body in a butt joint mode, a rotating disc is horizontally arranged at the top end of the vertical plate body, an integrated control structure is adopted so that clamping and fixing can be more stable, and meanwhile a multi-angle adjusting structure is combined so that the machining requirement can be met.

The invention discloses a built-in blade abrasion displacement timing detection structure for an automobile engine water pump, and relates to the technical field of detection, the built-in blade abrasion displacement timing detection structure comprises the automobile engine water pump, the automobile engine water pump comprises a mounting seat and a plurality of impeller blades, a detection structure is arranged on one side above the reflecting plate, an arc-shaped plate II enters an arc-shaped groove to fill the arc-shaped groove, so that the internal shape of the impeller box is recovered, most of the detection structure is hidden in an equipment groove, and a sensor and a hydraulic sensor are prevented from being attached and polluted by impurities in water conveyed by an automobile engine water pump; accuracy of work detection of the sensor and the hydraulic sensor is guaranteed, meanwhile, occupation of the detection structure on the automobile body space is reduced, and normal work of the automobile engine water pump cannot be affected by arrangement of the detection structure.

The utility model relates to the technical field of air tightness detection, and especially relates to an automobile engine manifold air tightness detection device comprising a clamping assembly; mounting parts are symmetrically arranged on one side of the top end of the test box, supporting shafts are rotationally arranged in inner holes of the mounting parts, an operation table is arranged on the supporting shafts, the clamping assembly is arranged on the operation table, the engine manifold is fixed to the operation table through the pressurizing assembly, and a cavity of the test box is filled with test liquid. The engine manifold completely enters the test liquid during testing; the pressurizing assembly is arranged on the operation table, and the pressurizing assembly is used for filling the engine manifold with gas; the driving assembly is arranged on the test box, and the driving assembly is used for providing rotation power for the supporting shaft to drive the operation table; the operation procedure is simple, and the shape adaptability is high.

A combined piston ring used for a new energy hybrid power automobile engine belongs to the technical field of engines and comprises a ring body inner plate in contact with the inner side face of a main body mechanism, an ash discharge groove formed in the ring body inner plate, a scraping plate installed in a groove formed in the ring body inner plate and a plurality of shaking reeds evenly distributed between the two ring bodies. The scraping plate is in contact with the inner wall of a groove formed in the piston; in the working process of an engine, residual carbon deposits on the inner wall of a groove formed in a piston are scraped off in the rotating process of a scraping plate, the carbon deposits enter an ash discharging groove along an inclined face arranged on the scraping plate, a connecting plate makes contact with a shaking reed in the rotating process so that the shaking reed can be intermittently compressed and bounced off, the carbon deposits in the shaking reed can be prevented from being accumulated into blocks, and the service life of the connecting plate is prolonged. The carbon deposition can be effectively prevented from being accumulated in a gap between the piston ring and the piston, the piston ring is blocked, and the work of the piston is influenced.

The utility model relates to an injection mold for an air inlet hard pipe of an automobile engine, which comprises a movable mold assembly and a fixed mold assembly which are matched with each other and are respectively arranged front and back, and the movable mold assembly comprises a movable module, a movable core block embedded in the rear side of the movable module, a feeding block fixed on the front side of the movable module and a panel fixed on the front side of the feeding block; the fixed mold assembly comprises a fixed mold block matched with the movable mold block, a fixed core block embedded in the front side of the fixed mold block and matched with the movable core block, a seat block arranged behind the fixed core block, and an ejection mechanism arranged between the seat block and the fixed core block; a first inner core forming module and a second inner core forming module which are matched with each other are arranged between the movable module and the fixed module; according to the injection mold, the demolding difficulty is reduced, and the structural complexity of the injection mold is reduced, so that the manufacturing and assembling processes are simplified.

The invention relates to the technical field of automobile engines, in particular to an automobile engine temperature regulation and control method based on real-time data monitoring, which comprises the following steps: S1, collecting multi-source data in real time; s2, data feature extraction and fusion; s3, temperature regulation and control strategy intelligent decision making; s4, performing hierarchical regulation and control; according to the method, through multi-source data fusion and an intelligent algorithm, the limitation of traditional threshold control is broken through, millisecond-level response and dynamic adjustment of the engine temperature are achieved, and the temperature control precision is improved; according to the optimal strategy decision based on reinforcement learning, excessive work of the cooling system is avoided, and energy consumption is reduced; meanwhile, the engine is maintained to operate in the optimal temperature interval, and the fuel economy and the power output efficiency are improved; the real-time monitoring and closed-loop feedback mechanism can recognize the abnormal temperature trend in advance, high-temperature faults are avoided through hierarchical regulation and control, the service life of an engine and parts is prolonged, and the reliability of a vehicle is improved.

The invention discloses a positioning machining device for an automobile engine flywheel, and belongs to the technical field of automobile engine flywheel machining, the positioning machining device comprises a case, a rotating table is rotatably connected to the middle of the top end of the case, a through hole is formed in the surface of the rotating table, a side plate is mounted on one side of the top end of the rotating table, and an adjusting structure is distributed on one side of the side plate; the adjusting structure comprises a first motor fixedly installed on one side of the side plate, the output end of the first motor is connected with a turnover base, and a first air cylinder is installed on the inner side of one end of the turnover base. Through the arrangement of the motor, the driving gear, the gear ring, the overturning base, the clamping base and other structures, the automobile engine flywheel to be machined can be conveniently and effectively clamped and limited in the follow-up process, and the stability of the automobile engine flywheel in the follow-up machining process is ensured; and meanwhile, rotation or overturning treatment of the automobile engine flywheel can be achieved according to actual machining requirements, so that follow-up machining treatment of different positions of the automobile engine flywheel is facilitated, and practicability is higher.

A pedestrian protection automotive hood hinge comprises a release assembly which comprises a retainer supported by one of a first member and a second member and a releasable pin supported by the other of the one of the first and second members. The releasable pin is captured in the retainer in the normally closed position and the normally opened position. An actuator is configured to engage the second member and move the second member upward relative to the first member in response to a collision input. The releasable pin is configured to be released by the retainer in response to the collision input permitting the second member to pivot about a member pin relative to the first member to an opened hood collision position. A retention link with a retention pin moves in a controlled manner during a collision so that the retention pin engages a retention slot. At maximum opening of the hood, the retention pin engages a retention clip adjacent the retention slot and begins to rebound. With continued force exerted by the hood on the retention clip, the retention pin passes through and exits the retention clip and the hood decelerates to a final post collision position.

The invention discloses a high-temperature-stripping-resistant epoxy structural adhesive as well as a preparation method and application thereof, and belongs to the technical field of high-performance composite materials. The epoxy structural adhesive comprises bisphenol A type epoxy resin, novolac epoxy resin, polysiloxane-polyurethane modified epoxy resin, core-shell modified epoxy resin, PEEK ultrafine powder and other components, and through mutual cooperation of all the components, the problems that in a high-temperature service environment, the adhesive layer modulus of traditional adhesive is rapidly attenuated, and a bonding interface is prone to failure are solved; the epoxy structural adhesive provided by the invention has both rapid curing and heat resistance, is stable in interface bonding, has the highest modulus of 1.28 GPa at 80 DEG C, the highest peel strength of 7.8 N / mm at 80 DEG C, and a damage mode of cohesion or high-proportion mixed damage, and is especially suitable for structural bonding requirements of harsh scenes such as peripheral structures of automobile engines, high-temperature areas of electronic equipment and the like.

The embodiment of the invention provides an automobile engine fault diagnosis method and device, a vehicle and a medium. The method comprises the steps that multiple types of sensor data related to an automobile engine are acquired; for each type of sensor data, performing feature extraction by adopting a feature extraction strategy adaptive to the type of the sensor data to obtain corresponding feature data; and fusing the feature data corresponding to the various types of sensor data to obtain comprehensive feature data, and performing fault diagnosis by adopting the comprehensive feature data to obtain an engine fault diagnosis result. According to the embodiment of the invention, the method achieves the fault diagnosis of the automobile engine in a multi-modal data fusion analysis mode, and improves the accuracy and reliability of the fault diagnosis of the automobile engine.

The invention discloses an automobile engine throttle valve control and diagnosis system and method, and particularly relates to the technical field of automobile engine throttle valve control. The control method comprises the steps that engine operation parameters are obtained in real time, the target throttle valve pressure ratio is calculated through a speed density method, the target throttle valve opening degree is obtained in combination with related parameters, and an actuator is controlled to conduct adjustment; the diagnosis method comprises the steps of monitoring throttle valve operation state parameters, setting a normal range and comparing and judging faults. The system comprises a data acquisition module, a control calculation module, an execution module and a diagnosis module. The opening degree of the throttle valve can be accurately controlled, the combustion efficiency of the engine is optimized, the fuel economy is improved, and emission is reduced; throttle valve faults can be timely and accurately diagnosed, fault codes are recorded, protection measures are taken, the operation reliability and safety of the engine are improved, all the modules work cooperatively, and the overall operation efficiency of the system is improved.

The invention belongs to the field of automobile engine energy saving, and particularly relates to an engine energy saving device and method for producing hydrogen through ultrasonic water mist and mineral particles, the device comprises a special water storage tank, an ultrasonic water mist generator and micro hydrogen production mineral particles, and the special water storage tank is divided into an ultrasonic water mist generation chamber and a mineral particle hydrogen production chamber through a permeation partition plate; the ultrasonic water mist generator is placed at the position 3 mm-5 mm below the liquid level of the ultrasonic water mist generating chamber, and water is atomized through external power supply. Micro-hydrogen production mineral particles are placed at the bottom of the mineral particle hydrogen production chamber and react with water to generate hydrogen, part of hydrogen is dissolved in water, and part of hydrogen is stored in the gas storage chamber above the liquid level. An air outlet is formed in the top of the special water storage tank and connected with an engine air inlet pipe, water mist and hydrogen enter an air cylinder along with engine suction to participate in acting, and therefore the redundant fuel injection amount is eliminated, and heat transfer loss in the cylinder is reduced. The heat efficiency of the automobile engine is improved, knocking is restrained, the incomplete combustion phenomenon is reduced, and then fuel consumption and harmful gas emission are reduced.

The invention provides a material ejecting mechanism for an automobile engine casting mold, and belongs to the technical field of metal casting, the material ejecting mechanism for the automobile engine casting mold comprises a rack and a table top located above the rack, a mold pressing mechanism is arranged on the upper surface of the table top, and when the mold pressing mechanism is closed, a mold cavity for pouring can be formed; a supporting plate capable of sliding up and down is arranged on the rack, an ejector rod is mounted on the supporting plate, a through hole is formed in the table top, a guide hole communicated with the through hole is formed in the mold pressing mechanism, and the ejector rod penetrates through the table top and the mold pressing mechanism through the guide hole and the through hole to reach the interior of the mold cavity and is used for demolding a casting; the ejector rod is driven by the supporting plate to move up and down, cold air is fed into the cavity through the circulation channel, the bottom of the casting and the ejector rod are cooled, and the situation that the bottom of the casting deforms when the ejector rod ejects the casting and the ejector rod deforms due to frequent heating is prevented.

The utility model discloses a high-precision automobile engine balance weight which comprises a transmission ring, a bottom ring body, fixing columns, fixing holes, arc-shaped pieces, a counter weight frame, fixing pieces, adjusting notches, adjusting columns and adjusting blocks. The fixing holes are evenly formed in the top of the transmission ring, the fixing columns are connected into the fixing holes in a threaded fit mode, and the arc-shaped pieces are arranged on the arc-shaped pieces. The fixing columns are sleeved with through grooves evenly formed in the bottom ring body, and the bottom ring body is attached to the top of the transmission ring. During assembly, the fixing columns penetrate through the through grooves evenly formed in the bottom ring body and are connected into the fixing holes in the transmission ring in a matched mode, relative fixation of the transmission ring and the counter weight frame is achieved, the position of the counter weight structure relative to a transmission plane can be adjusted conveniently according to actual requirements, and the complex actual use requirements are met; the practicability of the balance block is improved; the centrifugal moment of the balance block can be adjusted by rotating the adjusting column under the condition that the rotating speed of the motor is not changed, and the universality of the balance block is improved.

The utility model relates to the technical field of mechanical assembly, and discloses a new energy automobile engine cylinder cover water pipe press-fitting device. Comprising a machine table, a machine frame arranged on the machine table, a downward pressing mechanism arranged on the machine frame, a limiting table arranged on the machine table, a side pressing limiting assembly and a press fitting mechanism, and the side pressing limiting assembly and the press fitting mechanism are arranged on the two sides of the limiting table. The press-fitting mechanism comprises a press-fitting driving module and a chuck assembly arranged at the output end of the press-fitting driving module, and the chuck assembly comprises a chuck base, a limiting clamping jaw arranged on the front side of the chuck base and a water pipe limiting block arranged at the output end of the limiting clamping jaw. A pipe opening limiting block is arranged above the water pipe limiting block, first limiting grooves are oppositely formed in the inner side of the water pipe limiting block, a pipe opening groove is formed in the pipe opening limiting block, and the pipe opening groove communicates with the first limiting grooves.

1. The name of this design product: double-cavity volute structure intake manifold assembly. 2. Application of this design product: used in automobile engine air intake system. 3. The design key point of this appearance design product lies in the shape. 4. The picture or photo that best illustrates the design points: three-dimensional picture.

The invention provides low-viscosity high-wear-resistance vehicle engine oil and a preparation method thereof, and belongs to the technical field of engine oil. According to the preparation method, an ionic liquid group is introduced through a reaction, a nano interlayer compound is constructed by combining surface modification of a metal-ionic liquid complex and silicon dioxide nanoparticles, and a microcapsule structure is formed through coating of a urea-formaldehyde prepolymer; the ionic liquid group provides a low friction coefficient and thermal stability, the silicon dioxide nanoparticles provide physical isolation and wear-resistant protection, and the microcapsules realize controlled release and dynamic repair of the lubricating components; a skeleton polymer is prepared through a reaction of polyamidoamine and epoxy chloropropane so as to provide abundant active sites, and oxidation resistance is improved through a synergistic effect of the skeleton polymer, hindered phenol and calixarene; by combining oleic acid modified nanoparticles, the dispersity and the wear resistance are enhanced, and meanwhile, dynamic protection is provided on a friction interface; the synergistic effect prolongs the service life of the engine oil and improves the high-temperature stability of the engine oil.

The invention relates to the technical field of welding path planning, in particular to a welding robot path planning method and system based on an improved whale optimization algorithm, and the method comprises the following steps: carrying out the path planning modeling of a welding robot on a front cover of an automobile engine, and obtaining a welding path planning mathematical model; the whale optimization algorithm WOA is improved by integrating multiple strategies to obtain an optimal improved whale optimization algorithm GSWOA, and the performance of the optimal improved whale optimization algorithm GSWOA is verified through four test functions; on the welding path planning model, path planning is conducted through the optimal improved whale optimization algorithm GSWOA, and the optimal welding path on the automobile engine front cover is obtained. The whale optimization algorithm WOA is improved through multiple strategies, the improvement of the multiple strategies is integrated through a Stacking framework, the integration of the advantages of all the strategies is achieved, the influence of failure of a single strategy can be avoided, and the robustness of the algorithm is improved.

The invention discloses an adjusting system for controlling the rotating speed of an automobile engine, and the system is characterized in that the system comprises a data collection module which collects the conventional operation parameters of the automobile engine in real time, the conventional operation parameters comprise the rotating speed, the torque, the air inflow, the oil temperature and the oil pressure, and also collects the acceleration, the gradient information, the external environment temperature and humidity of a vehicle and the driving behavior data of a driver; such as accelerator pedal depth change rate and brake frequency; the data analysis module is connected with the data acquisition module and is used for deeply mining a relationship and a potential rule in data by applying a long short-term memory (LSTM) network algorithm in deep learning and a fusion analysis method based on a physical model, identifying a real-time running state and a future change trend of the engine and intelligently diagnosing potential fault hidden dangers; the fuel injection amount and the ignition time can reach the optimal state through accurate rotation speed adjustment, fuel consumption is greatly reduced, fuel economy is improved, and expenditure is saved for users.

The utility model discloses an automobile engine expansion type suspension which comprises automobile engine expansion type suspension bodies, a locking assembly is fixedly installed between the two automobile engine expansion type suspension bodies, an engine is detachably installed in the locking assembly, and fixed contact points of the locking assembly and the engine are distributed in a triangular shape. And therefore, the engine can be triangularly fixed. Through the arrangement of the locking component, the engine can be triangularly fixed, the vibration and displacement of the engine can be effectively prevented through the triangular fixation, a stable triangular structure is formed, stronger supporting force is provided, and further the risk of failure and damage of the engine can be reduced.

A bowl plug press-in floating mechanism belongs to the technical field of automatic feeding and automatic press-in and comprises a driving device, a press-in rod and a floating connector, the driving device is arranged on a servo motor mounting frame and connected with the press-in rod through the floating connector, the press-in rod is mounted in a guide sleeve and can slide back and forth in the guide sleeve, and the press-in rod is connected with the servo motor mounting frame through the floating connector. The guide sleeve is arranged on the guide sleeve mounting seat, the guide sleeve mounting seat is fixed on the servo motor mounting frame through the supporting column, the front end of the press-in rod is connected with the floating head through the limiting pin, the O-shaped rings are respectively arranged in front of and behind the limiting pin, the floating head is sleeved on the outer diameter of the front end of the press-in rod through the limiting pin, and the front end of the floating head attracts the bowl plug through the magnet. And the bowl plug is pressed into a hole of the aluminum casting of the automobile engine through a driving device. The servo electric cylinder is used as power, the front end of the servo electric cylinder is matched with the floating head to suck a workpiece for press-in, the press-in depth and the press-in success rate are effectively guaranteed, and convenience, rapidness, time saving and labor saving are achieved.

The invention discloses a vacuum dry-filling press-fitting device and process for an automobile engine hydraulic suspension part, the vacuum dry-filling press-fitting device comprises a machine table, the upper side of the machine table is provided with a vacuum lower shell, the vacuum lower shell is internally provided with a suspension part positioning seat capable of moving up and down, the suspension part positioning seat and a clamping assembly used for clamping and fixing the suspension part; a riveting fixing base connected with an equipment stamping head is arranged above the machine table, a riveting module matched with a suspension part is installed on the lower side of the riveting fixing base, a vacuum upper shell capable of moving up and down is arranged on the outer side of the riveting fixing base, and a pull-down base is installed on the lower side of the machine table. A multi-claw clamping mechanism used for clamping the lower end of the suspension part is connected between the upper side of the pull-down seat and the suspension part positioning seat. When the equipment punching head moves downwards, the lower vacuum shell and the upper vacuum shell are in butt joint, and a closed space used for vacuumizing is formed in the lower vacuum shell and the upper vacuum shell. The problem that leakage is prone to occurring at a used vacuumizing opening of an existing automobile engine hydraulic suspension part can be solved.

The invention belongs to the field of fault diagnosis in vehicle engineering, and relates to an automobile engine bearing fault diagnosis method based on multi-source heterogeneous data fusion, which is obtained by training a multi-source heterogeneous data training data set. The method comprises the steps of data acquisition and marking, construction of a multi-source heterogeneous data fused automobile engine bearing fault diagnosis model and set hyper-parameters, multi-head attention mechanisms in a Transform architecture are utilized to perform coupling noise reduction on multi-source heterogeneous data, meanwhile, a self-attention mechanism is utilized to pay attention to the part with the most serious noise in a sample, and the noise is reduced. And in cooperation with a SimAM mechanism, multi-source heterogeneous data coupling noise reduction and single-sensor information independent noise reduction are realized, and the noise reduction effect of the network is improved.

A method for producing and manufacturing steel for automobile engine connecting rods by means of an eco-friendly electric arc furnace process, comprising the following chemical components in percentage by mass: 0.38% -0.42% of C, 0.22% -0.35% of Si, 0.55% -0.70% of Mn, ≤0.015% of P, ≤0.008% of S, 0.65%-0.80% of Cr, 1.30%-1.55% of Ni, ≤0.15% of Cu, 0.16%-0.23% of Mo, and the balance iron and inevitable impurities. The process route comprises: ECOARC eco-friendly electric arc furnace+LF refining+RH refining+continuous casting billet+heating by heating furnace+rolling process+heat preservation, and produced steel bars for automobile engine connecting rods meet the mechanical property requirements and ensure the purity of steel.