32results about How to "Improve power-to-mass ratio" patented technology

The invention relates to an internal-combustion engine with piston reciprocating, comprising body, cover, piston, crankshaft and connecting bar. The piston moves advance and return and is connected with crankshaft through connecting bar. The space on the top of piston sealed by cover is formed blast chamber. Intake valve, air outlet valve and spark plug are set in cover at the top of blast chamber. In said body except blast chamber air compressed unit is set, which comprises inhalation valve, air outlet valve, assistant piston, which can move advance and return, and be connected with said crank shaft through assistant connecting bare, and assistant connecting bar. The outlet of air outlet valve is connected to hollow air conversation room withstanding pressure, in which thermal converter, temperature sensor, fuel nozzle and fuel evaporating and mixing room. The outlet of air conversation room is connected to said inlet of intake valve in blast chamber. The invention can decrease harmful gas NOx released largely because of low temperature, improve work efficiency of gas and decrease burning noise.

The invention provides a magnetizing outer rotor doubly salient motor with a radial structure, which is characterized by comprising a stator, a rotor, an air gap between the stator and the rotor, a rotating shaft and the like, wherein, the stator comprises a stator permanent magnet support arranged around the rotating shaft, permanent magnets arranged around the stator permanent magnet support, and a stator core arranged around the permanent magnet; the permanent magnets adopt a radial magnetizing or parallel magnetizing mode; the stator core is composed of stator core components; air gaps exist among the stator core components; and the permanent magnets and the stator core components are contacted with each other and have equal number. The magnetizing outer rotor doubly salient motor takes the magnetizing body with a radial/parallel structure as a magnetic source and has simple manufacturing process and less magnetic leakage on an end part; and the magnetizing outer rotor doubly salient motor can be widely applied to fields such as wind power generation, an automobile hub and the like.

The invention relates to a master-slave type electromechanical servo cooperative motion control system, and relates to the field of aerospace thrust vector control electromechanical servo. The system aggregates signals, such as a bus instruction of a control system, linear displacement feedback of a master actuator and linear displacement feedback of a slave actuator; according to the swing angle of a spray tube, the corresponding telescopic lengths of the master and slave actuators and the accelerated factor and the acceleration factor of master and slave motion tracks are calculated in real time; a real-time motion track plan of the master and slave actuators is realized; an instruction signal of the master actuator is output in real time; a master-slave servo control driver completes inversion control of a direct-current power supply on a guided missile through a motor space vector control algorithm; a servo motor drives an electromechanical transmission mechanism to act a load, so that the purpose of controlling a thrust vector is achieved; the characteristic that synchronous control is strictly realized by master-slave cooperation is realized; furthermore, a basic technology is relatively matured and easy to realize; high integration and cooperative motion control of the system are realized; and thus, the technical problem that the spray tube is structurally damaged due to super-swing of the spray tube through a two-channel independent control method can be solved.

The invention provides a fire blast-electromagnetic complex drive jumping mechanism which comprises an air cylinder piston assembly and a linear motor. The air cylinder piston assembly comprises a cylinder body, a piston and an igniter; the cylinder body is a barrel with an opened end and a sealed end; an air inlet and an air outlet are formed in the end surface of the sealed end of the cylinder body; a linear motor stator is connected to the opened end of the cylinder body; the piston is arranged in the cylinder body; the bottom part of the piston is connected with one end of a linear motor promoter; the other end of the linear motor promoter is connected with a load; and the ignitor is arranged at the sealed end of the cylinder body. The fire blast-electromagnetic complex drive jumping mechanism has the advantages that the jumping mechanism is used for driving a jumping robot to jump, the characteristics of large instant output force and high power mass ratio of the jumping robot anda legged robot can be met, and the active control on the fire blast drive and the continuous jumping drive of the legged robot can be realized.

The invention discloses a permanent magnet synchronous direct-drive motor. A rotor iron core sleeves a shaft. The outer periphery of the rotor iron core is evenly equipped with a plurality of semi-open slots. A plurality of permanent magnets are adhered to the outer periphery of the rotor iron core. Epoxy resin is arranged among the permanent magnets and among the semi-open slots through embedding. The two end faces of the rotor iron core are equipped with non-magnetic-conductive metal end plates. A stator iron core of a stator is evenly equipped with a plurality of open slots at the periphery. Notches of the open slots face the inner side of the stator, and stator windings are disposed in the open slots respectively. The notches of the open slots are provided with magnetic conductive blocks, and are plugged by the magnetic conductive blocks. The motor of the invention is increased in pass mass ratio, exhibits high structural reliability, is easy to manufacture, and can response quickly. The harmonic wave content of an air gap magnetic field of the permanent magnet motor and the rotor loss of the motor are reduced, the magnetic leakage coefficient and the reactance of the motor are increased, short circuit currents are minimized, the operating points of the permanent magnets are improved, and the reliability of the permanent magnet synchronous direct-drive motor is improved.

The invention discloses a transmitting antenna system of a space solar power station. The transmitting antenna system is funnel-shaped on the whole. The transmitting antenna system is characterized in that the funnel-shaped transmitting antenna system is formed by splicing and assembling a plurality of oblique curved structure units; each oblique curved structure unit comprises a supporting frame, a photovoltaic cell layer and a transmitting antenna layer mounted at the inner side of the supporting frame, and a radiation panel layer mounted at the outer side of the supporting frame, wherein the photovoltaic cell layer is disposed on the transmitting antenna layer; and each radiation panel layer comprises an oblique curved panel, an oscillator, a phase shifter, an amplifier, a power divider and connecting cables, wherein the oscillator, the phase shifter, the amplifier and the power divider are mounted on the oblique curved panel, and the shape of the oblique curved panel is consistent with a Bezier curve. The transmitting antenna system has the advantage that by adopting the oblique curved structure units, the problem of heat radiating is solved, the power-to-mass ratio of the system is improved, the problem that the requirement on the angle of incident sunlight is strict is solved, and the difficulty of focusing system design is reduced.

The invention discloses an internal combustion engine and a design and manufacturing method thereof. According to the internal combustion engine and the design and manufacturing method thereof, the internal combustion engine is a novel scheme, a new energy conversion mode is introduced theoretically, the internal combustion engine is of an elastic energy storage structure, the process that the internal energy of the working medium is converted into elastic potential energy and then is converted into the load energy is added, the energy of the internal energy of the working medium can be rapidly converted, the highest temperature and the highest pressure of the combustion can be reduced and controlled, the compression ratio of the internal combustion engine can be greatly improved, the heatefficiency of the internal combustion engine is greatly improved, the mechanical efficiency is effectively improved, the emission of harmful substances can be greatly reduced, the power performance,the power and the lift power of the internal combustion engine can be greatly improved, the mass of the unit displacement body can be effectively reduced, even the reciprocating piston type fuel oil integrated engine can be realized, various fuel fuels can be used, and a new and wide prospect is developed for the application of internal combustion engines and various fuels.

The invention discloses an internal combustion engine power device. The internal combustion engine power device comprises an air cylinder, a piston and a movable piece. The piston is arranged in the air cylinder and can reciprocate between an upper stopping point and a lower stopping point. The movable piece is arranged in the air cylinder and moves between the initial position and the tail end position. The initial position is higher than the upper stopping point, and the tail end position is higher than the lower stopping point. The movable piece is provided with a first surface and a second surface which are opposite. The movable piece is provided with gas channels capable of being closed or opened. By means of the additionally-arranged movable piece, the movable piece is provided with the gas channels capable of being closed or opened, waste gas and fresh gas are isolated in the air inlet and outlet process of the internal combustion engine power device, and the problems that due to the fact that fresh gas and waste gas are mixed in an existing two-stroke engine, the combustion efficiency is low and pollution is high are solved. The invention further discloses an engine and two running methods of the internal combustion engine power device.

The invention provides a W-type loudspeaker which refers that the cross section of the overall structure of the W-type loudspeaker is W-shaped. A W-shaped basin support is a basin-shaped support formed by an iron sheet via integral stamping. The periphery of the W-shaped basin support is provided with an external taper ring, an internal tape cover is arranged in the middle and an annular magnetic-conductive cavity is arranged at the lower end. The internal wall of the annular magnetic-conductive cavity is provided with an annular strong permanent magnet. A W-shaped paper cone is a basin-shaped voice diaphragm formed by paper material via integral processing. The periphery of the W-shaped paper cone is provided with a tape ring, a tape cover is arranged in the middle, and an annular installing slot is arranged at the lower end. A framework voice coil is adhered in the annular installing slot. The W-shaped structure is adopted so that an elastic wave plate of a common loudspeaker is enabled to be a taper paper cone which can stabilize the position of the voice coil and can also generate sound, power of the voice coil can be maximized, mass of a vibration component can be minimized, the performance index of the loudspeaker can be effectively enhanced, the improved magnetic circuit system is simple and low in total weight and thus advantages are obvious.

The invention relates to a power generation device, in particular to an offshore wind power generation device which comprises an energy driving chain and a steel tower. The energy driving chain comprises a wind wheel, a spindle, a speed-increase box and a generator. The offshore wind power generation device solves the problems that the maintenance is complex, a yawing device is needed, blades are complex, and the manufacturing cost is high; and the offshore wind power generation device has the advantages that the device is small in loss and easy to maintain, high wind energy can be generated without needing the yawing device, and the cost is low.

The invention provides a semiconductor laser device, which comprises a bottom plate, a cooling channel is arranged in the bottom plate, the cooling channel is provided with a U-shaped pipe, and the U-shaped pipe is provided with two straight pipe sections; the laser array comprises a plurality of laser single tubes and small reflectors, the laser single tubes are installed above the position between the two straight tube sections of the U-shaped tube side by side, and the small reflectors are installed at the opposite positions of the laser single tubes side by side and used for irradiating light emitted by the laser single tubes to the beam combining device for space beam combining. According to the semiconductor laser device provided by the invention, the cooling liquid channel is arranged in the bottom plate, the cooling channel is provided with the U-shaped pipe, the U-shaped pipe is provided with the two straight pipe sections, the laser single pipes are arranged above the position between the two straight pipe sections of the U-shaped pipe side by side, and the two straight pipe sections can bring a better cooling effect compared with a single water channel, so that the output power of the laser device can be improved.

The invention discloses a high-loudness vehicle-mounted alarm. The high-loudness vehicle-mounted alarm consists of an alarm machine box and a high-power speaker, wherein the high-power speaker is formed to a compressive sounding head by a W-shaped basin frame, an annular magnetic conducting cavity, an annular strong permanent magnet, a W-shaped sound film, a skeleton sound ring and a W-shaped end cover; a reflective horn is mounted on the compressive sounding head; the W-shaped sound film is equivalent to one sound ring to push two sound films, so that the effective vibrating area of the sound film is enlarged; a conical structure of the W-shaped sound film is excellent in rigidity and light in weight; the sound ring of a center tap is directly matched and connected with an audio power amplifier output circuit; an improved magnetic circuit system is simple in structure, strong in magnetism and light in weight; in the audio power amplifier circuit, upper and lower field effect tubes are connected to A and B type push-pull output circuits having common drain; the negative feedback is deep; the amplifier tone quality is improved; the amplifier stability is improved; the field effect tubes are high in output current and low in loss; a vehicle power supply with low voltage of 12 V is only used for generating an electroacoustic power above 500 W; and the high-power speaker is driven to give a high-loudness alarm sound.

The invention discloses an elastic variable-length piston connecting rod and a design and manufacture method thereof. According to the elastic variable-length piston connecting rod and the design andmanufacture method thereof, the elastic variable-length piston connecting rod is an elastic energy storage structure, the functions of the elastic variable-length piston connecting rod are that energycan be stored and the elastic potential energy can be rapidly converted, and therefore the energy of internal energy of a working medium of a reciprocating piston type internal combustion engine canbe rapidly converted, the maximum temperature and the maximum pressure of combustion can be decreased and controlled, the compression ratio of the internal combustion engine can be greatly improved, the heat efficiency of the internal combustion engine is greatly improved, the mechanical efficiency is effectively improved, the emission of harmful substances can be greatly reduced, the power performance, the power and the power per liter of the internal combustion engine can be greatly improved, the unit displacement machine body mass is effectively decreased, the power-mass ratio is increased,even a reciprocating piston type fuel oil integrated engine can be realized, various fuel oil and fuels can be used, and a new and wide prospect is developed for the application of the reciprocatingpiston type internal combustion engine and the various fuels.

The invention discloses a novel engine which comprises two shaft levers, a plurality of air cylinders, pistons and a casing, wherein the two shaft levers are arranged on a central axis and are symmetrical up and down; the plurality of air cylinders are uniformly distributed around the two shaft levers; the pistons are arranged in the air cylinders; the casing encircles the exteriors of the air cylinders and is rotatably connected with the air cylinders in a sealing mode, and the casing is connected with the shaft levers; the pistons are provided with piston rods; the piston rods are connected with two connecting blocks which are symmetrical up and down, and the axle centers of the two connecting blocks deviate the central axis; the connecting points of the connecting blocks and the piston rods are symmetrical relative to the axle centers of the connecting blocks; the axle centers of the upper and lower connecting blocks are respectively connected with the upper and lower shaft levers through connecting parts; and the two symmetrical ends of the casing relative to the central axis are respectively provided with a cooling material inlet, a heating material outlet and a cooling material outlet and a heating material inlet. The engine has a simple structure, is convenient to use, is high in efficiency, low in noise, less in pollution and low in operating cost is low, and is suitable for various energy sources; and because continuous combustion is adopted, the fuel combustion efficiency is higher, and the engine is suitable for the fuel with higher impurity content.