1102 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 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.

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 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 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.

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 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.

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.

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.

The invention discloses an engine multi-vehicle-type adaptive NVH quality optimization method and system, and belongs to the technical field of automobile engine debugge.The method comprises the steps that after an engine is installed on a to-be-adapted vehicle, vehicle working condition data are collected in real time, the vehicle working condition data comprises a vehicle speed, an accelerator opening degree, an engine rotating speed, a gear, a hydraulic torque converter locking state and an engine oil temperature signal; the vehicle working condition data is compared with the working condition of the engine noise sensitive working condition, and whether the engine noise sensitive working condition is entered or not is recognized; when the engine has the noise sensitive working condition, an NVH control strategy embedded in an engine electronic control unit is activated; the NVH control strategy comprises adjustment of an engine ignition angle and oil injection parameters; the engine is controlled according to the ignition angle optimization control instruction and the oil injection parameter optimization instruction; and when the vehicle runs out of the working condition of the noise sensitive working condition of the engine or gear shifting is completed, the conventional combustion control logic is recovered. And the rising rate of the pressure in the cylinder is effectively reduced, so that the structural knocking noise within the range of 150-600Hz is inhibited.

Oil filters used in automotive vehicles come in different sizes and may be located at varying positions on the engine which differ in terms of ease of access. Due to such variability, multiple specialized tools have typically been required to remove installed oil filters from automotive engines, including various sized pliers, straps, bands and the like, the selection of the tool depending on the location and size of the oil filter, and the angle of approach required. An oil filter removal tool is now provided which has at least two sets of opposing gripping regions, the two sets being in perpendicular orientation relative to each other. Advantageously, the oil filter removal tool may be used to approach and grasp the oil filter from an axial or radial direction, and may be used with different sizes of oil filters.

The invention provides an engine in-the-loop semi-physical simulation test platform for a hybrid electric vehicle, which relates to the technical field of automobile engine testing and comprises a real-time virtual simulation platform and an engine transient test platform. The real-time virtual simulation platform comprises a driver model module, an energy management strategy module, a power assembly module, a vehicle dynamics module and an exhaust temperature control module. The driver model module carries out data calculation according to the output of the vehicle dynamics module, a vehicle dynamics model calculates a dynamics state threshold value, and energy management is carried out through the energy management strategy module; the engine transient test platform comprises an engine controller, a high-dynamic electric dynamometer, a dynamometer control system, an engine, a post-processing system, an emission detection system and a post-processing temperature control system. According to the platform, a real engine pedestal, a digital hybrid power whole vehicle model and a rapid prototype controller are deeply integrated, so that the model reusability is improved.

The invention relates to an automobile engine noise active noise reduction method and system based on dynamic partition, and belongs to the field of noise control. The method comprises the steps that engine noise characteristic parameters are collected, a crankshaft inertia compensation item is obtained based on the engine noise characteristic parameters, and noise compensation frequency is obtained; generating an active cancellation sound wave based on the noise compensation frequency; generating a dynamic partition driving signal according to the active offset sound wave and executing a dynamic partition noise reduction instruction; and introducing a regulation and control mechanism, and regulating and controlling a dynamic partition driving signal based on the regulation and control mechanism. According to the method, frequency tracking under the variable rotating speed working condition is achieved, the sound field space heterogeneity is comprehensively considered, and the noise reduction performance under the complex working condition can be remarkably improved.

The invention discloses an automobile maintenance engine fault dynamic diagnosis system and method. The system comprises a data acquisition module, a data preprocessing module, a dynamic monitoring and recording module, a sound signal extraction algorithm module, a wavelet transform algorithm module, a neural network module and a fault diagnosis and prediction module. The method comprises the following steps: step 1, data acquisition; step 2, data preprocessing; step 3, real-time monitoring and recording; step 4, sound signal extraction and analysis; step 5, fault feature extraction; step 6, constructing and training a neural network; step 7, fault diagnosis and prediction; the dynamic monitoring function is designed, the vibration frequency, surface abnormity and working condition parameters of the automobile engine can be comprehensively monitored, real-time alarming is carried out on abnormal conditions, potential risks existing in the engine can be found in time, powerful support is provided for fault prevention and processing, and the working efficiency is improved. And a fast cyclic modulation spectrum peak graph algorithm is designed through a multi-stage decomposition method.

The invention relates to the technical field of automobile production, in particular to a casting island for intelligent manufacturing of automobile engine accessories, which comprises a die casting machine and a die assembly fixed on the inner side of the die casting machine, two side partition plates are in transmission connection with the inner side of the die assembly, and a top partition plate and a bottom partition plate are respectively arranged at the tops and the bottoms of the side partition plates. Spraying parts are arranged on the inner sides of the two side partition plates, an air storage tank and a material tank are arranged on the tops of the spraying parts, one sides of the side partition plates are in transmission connection with a mixing part, and the top of the die-casting machine is connected with a heat preservation part. The heat preservation part comprises a threaded pipe fixed to the inner side of the air storage tank and an oil tank fixed to the outer side of the material tank, and the heat preservation part conducts heating and heat preservation on the compressed air and the release agent by guiding cooling liquid of the cooling mold assembly to flow in the threaded pipe and the inner side of the oil tank in the spiral direction; and the mixing part is used for disturbing the release agent to prevent the release agent from precipitating by utilizing an anti-precipitation plate rotationally connected to the interior of the material tank in the process of matching with the side partition plate closing mold assembly.

The invention discloses an automobile engine multi-sensor fault diagnosis system and method, and particularly relates to the technical field of engine multi-sensor fault diagnosis, the automobile engine multi-sensor fault diagnosis system comprises a plurality of sensors, a diagnosis module and a calibration module, the plurality of sensors collect engine operation data and cover air inlet pressure sensors, boost pressure sensors and the like; the diagnosis module diagnoses sensor faults according to preset enabling conditions and logic description, wherein the sensor faults comprise various types of power supply short circuit, ground short circuit and the like; the calibration module sets calibration parameters and verifies and adjusts the parameters in three-high tests and daily calibration. The system and the method can comprehensively diagnose sensor faults, improve diagnosis accuracy and reliability, adapt to different working condition environments, guarantee normal operation of an engine, improve driving experience and stability of an automobile electrical system, and have remarkable practical value.

The invention discloses an apparent defect detection system for an automobile engine cylinder cover, which comprises a multi-modal data acquisition module, a data fusion and processing module, a defect identification and classification module and a result output and feedback module, comprise but not limited to optical image data, ultrasonic detection data, thermal imaging data and electromagnetic induction data. According to the apparent defect detection system and method for the automobile engine cylinder cover, various apparent defects, including surface visible defects, internal hidden defects and tiny defects, of the engine cylinder cover can be comprehensively detected by fusing multiple detection technologies of optics, ultrasound, thermal imaging and electromagnetic induction, the detection precision is remarkably improved, and the missing detection rate and the false detection rate are reduced; the whole detection process is automatic, the detection time is greatly shortened through multi-modal data acquisition and parallel processing, the rapid detection requirement on a large-scale production line is met, and the production efficiency is improved.

The utility model provides an unmanned aerial vehicle power nacelle and a multi-nacelle type freight unmanned aerial vehicle. The unmanned aerial vehicle power nacelle comprises a nacelle body; the front pulling mechanism is arranged at the first end of the cabin body, and a front pulling force for pulling the cabin body is generated through the configuration effect of the front pulling mechanism and air; the backward pushing mechanism is arranged at the second end of the cabin body, backward pushing force on the cabin body is generated through the configuration effect of the backward pushing mechanism and air, and the forward pulling force and the backward pushing force act on the cabin body at the same time so that forward power can be generated by the cabin body. According to the cabin, the power layout of front pulling and rear pushing is adopted, front pulling force is generated through the front pulling mechanism, rear pushing force is generated through the rear pushing mechanism, reasonable and large power is generated for the cabin through the power layout, an automobile engine is adopted as the engine, accessories are easy to obtain, the overall structure and layout are simple, and the manufacturing and operating cost can be reduced easily. The nacelles of different numbers are carried on small, medium and large freight unmanned aerial vehicles to form small, standard and large freight unmanned aerial vehicle series with different cargo capacities.

The invention relates to the field of automobile engine oil nozzles, in particular to an oil nozzle structure with a blockage switching function, which comprises an oil nozzle main body and an oil return assembly, and the oil return assembly is communicated with the top end of the oil nozzle main body; an inner cavity of the oil nozzle body is provided with a plurality of oil channels, one ends of the oil channels are communicated with a main channel, and the main channel is located in the center of the inner cavity of the oil nozzle body. By arranging the multiple sets of oil ducts, the pressure sensor, the high-pressure controller and the high-pressure input switch, the pressure sensor is used for detecting the pressure difference of the oil ducts to judge the blocking condition, then the high-pressure controller controls the high-pressure input switch to close the blocked oil ducts and open the normal oil ducts, and the opening and closing plate is driven through pressure linkage to switch oil ways; the problems that in the prior art, when an oil duct of an oil nozzle is blocked, oil injection is prone to being interrupted, shutdown disassembly and cleaning are needed, operation is tedious, maintenance cost is high, an automatic detection and switching mechanism is lacked, and complex working conditions are difficult to adapt are solved.

The invention discloses an automobile engine multi-mode electronic control system and a control method thereof, and particularly relates to the technical field of automobile engine multi-mode electronic control, the system comprises a sensor module, a mode switching module, an execution control module and a diagnosis module, the sensor module collects parameters such as rotating speed and air inlet pressure in real time; the mode switching module judges four working conditions of idling, cruising, accelerating and pressurizing based on threshold logic; the execution control module calls strategies such as PID (Proportion Integration Differentiation) control and EGR (Exhaust Gas Recirculation) rate calculation aiming at different modes to realize accurate adjustment of parameters such as throttle opening and boost pressure; the diagnosis module monitors faults of the sensor and the actuator in real time through voltage out-of-limit detection, position deviation comparison and temperature correlation analysis.