399results about "Machines/engines" patented technology

A wind harnessing system using a plurality of self supporting airfoil kites 50 for useful power. The system comprising multiple airfoil kites 50 in tandem attached to a pivotal control housing 32 by control lines 58L and 58R and support lines 60L and 60R. Control lines 58L and 58R can change length with respect to the length of support lines 60L and 60R to control the airfoil kites' 50 angle-of-attack, pitch angle, direction of flight, and flight speed. The length of control lines 58L and 58R are controlled from ground station 30 by a movable pulley system in control housing 32 to adjust the airfoils' direction to follow a specific flight path 140. Control lines 58R and 58L and support lines 60R and 60L are also wound on a power shaft and pulley system in control housing 32. As the airfoil kites are propelled by the wind at very-high speed, the airfoils generate a powerful AXIAL force. The control lines 58L and 58R and support lines 60L and 60R are then reeled-out under this AXIAL tension causing the power shaft and pulley system in control housing 32 to turn a generator to generate electricity. After airfoil kites 50 have finished their reel-out power stroke 140a, the airfoil's pitch angle is greatly increased so they can be reeled-in by their control and support lines using a minimum of force along path 140b. Once the airfoils have been rewound to the proper distance, the airfoils are again angled for high-speed operation to generate powerful AXIAL force and reeled-out along 140c to provide another power stroke The airfoil kites are then reeled-in again along path 140d and an the entire process repeats starting with power stroke 140a. Since the force to rewind the airfoils is much less than the force generated during reel-out, there is net power generated.

A suspended-load backpack designed to permit the load to move relative to the backpack frame during walking and running so that the large movements between the load and the frame of the backpack reduce the fluctuations of absolute vertical motion of the load. Because the hip (and thus the pack frame) go up a down a good deal during walking, a large relative movement between the frame and the load reduces the absolute excursion of the load. This movement may be, in turn, transferred to a motor through, for example, a rack and pinion gear, to convert the mechanical movement to electrical energy. The movement may also be converted to electrical energy by using an electroactive polymer (EAP) to connect the suspended load to the frame. Such designs allow the load to move in a controlled fashion to prevent the patient from losing his or her balance as the load moves up and down along the backpack frame. Such movement of the suspended-load relative to the frame also reduces the forces on the wearer's shoulders while walking or running, thus reducing the likelihood of orthopedic injury.

A wind power plant and a method of start up at least a part of a wind power plant connected to an external grid substantially without any energy delivered from the external grid for the start up is provided. The wind power plant having a plurality of wind turbines and at least one power source connected to at least one of the wind turbines in order to start the wind turbine while isolated from the remaining wind turbines. The started wind turbine may then supply power in order to start further wind turbines. Power may be delivered to the grid from the started wind turbines.

In a belt drive of an internal combustion engine, a two-arm belt tensioner has a fixed tubular supporting portion; a first and a second arm fitted to the tubular supporting portion to rotate about a common hinge axis, and supporting respective idle wheels cooperating with respective branches of the drive belt; and an elastic device for forcing the arms towards each other; the elastic device having a torsionally elastic elongated member extending through the tubular supporting portion, coaxially with the hinge axis, and having respective opposite end portions projecting outwards of the tubular supporting portion; the end portions being fitted with respective end caps, one of which is fitted directly with one of the arms, and houses one end, connected integrally to the other cap, of the other arm.

The invention discloses a system optimization method and device of ship operation energy efficiency. The method comprises the steps of data acquisition, mathematical model establishment, analysis and calculation, output and execution; namely, acquiring speed over water and speed over ground of the ship, real-time rotating speed and instant oil consumption of ship main engine; when the ship is in much deeper water, establishing a mathematical model between the real-time rotating speed of the ship main engine and the ship speed over water and a mathematical model between the real-time rotating speed of the ship main engine and the instant oil consumption of the ship main engine; analyzing and calculating the mathematical models under different water flow velocities and different main engine rotating speeds to obtain the ship kilometer oil consumption valves of the ship corresponding to different conditions; displaying the ship kilometer oil consumption value and the corresponding main engine rotating speed to guide the operation. The method also includes a ship technical state judging and navigation operating optimizing method. The device comprises a central processer and a memory thereof, a data acquisition equipment, man-machine conversation equipment, output equipment, a power supply unit and the like.

A composite structure having a number of thermoset resin containing elements and a number of thermoplastic elements and at least one interface between the thermoset resin containing elements and the thermoplastic elements is provided. The thermoset resin containing elements and the thermoplastic elements have functional groups at the interface which bond to each other when the composite structure is cured and the functional groups are independently selected from amines, carboxylic acids, acid anhydrides, oxiranes, and derivatives thereof in their non-bonded condition. Additionally, a blade having such a composite structure is provided.

A fuel system for an engine has a source of pressurized fuel, a rail, and a plurality of fuel injectors. The fuel system also has a sensor to sense a parameter of the pressurized fuel, and a controller. The controller is configured to generate a flow control offset value indicative of a difference between the value of the parameter and a desired value for the parameter, and to control operation of the source in response to the flow control offset value when the sensor is determined to be functioning properly. The controller is also configured to store the flow control offset value in a memory of the controller when the sensor is determined to be functioning properly and to associate the flow control offset value with at least one operating condition of the engine. The controller is further configured to control operation of the source in response to previously stored flow control offset value when the sensor is determined to be malfunctioning.

The composite sound-absorbing device of the present invention includes a perforated board having a number of first pores thereon, a back board and side boards, the perforated board, back board and side boards forming a closed cavity, wherein: at least one or more of the resonant cavities being located within the closed cavity; at least one or more of second pores being located on the resonant cavities; at least one of the second pores being connected with the closed cavity; the resonant cavity having a volume of V=10 mm³ −1×10¹⁰ mm³, having a thickness of 0.05 mm-10 mm, the second pores having an aperture of d′=0.05-100 mm, with a perforation rate σ′=0.01%-30%. The present invention is beneficial to improve the effect of sound-absorbing and expand the frequency band of sound-absorbing.

An optical fiber sensor that can detect a liquid level or detect a property of liquid with high reliability even under a frequently vibrational environment. The optical fiber sensor includes an optical fiber that includes a core having an area where a grating is formed and a clad, and is disposed so that at least a part of the area with the grating is immersed in liquid, a light source for making light incident to the optical fiber so that a cladding mode light having a wavelength band is occurred by the grating, and a light receiving unit for detecting the intensity of light which is incident from the light source to the optical fiber and transmitted through the grating.

An engine air brake device for a 4-stroke reciprocating-piston internal combustion engine is provided and has at least one intake valve and two exhaust valves per cylinder. The exhaust train incorporates a throttling device actuatable for engine deceleration so that an exhaust back pressure builds up in the accumulated exhaust gas upstream of the throttling device and becomes effective in conjunction with an engine-internal braking device associated to only one of the two exhaust valves for each cylinder, the other exhaust valve being controlled conventionally. The engine-internal braking device comprises a control piston installed in the valve bridge and pressed in the direction of the exhaust valve from a control pressure chamber supplied with pressurized oil and possibly also by means of an additional control compression spring.

An engine encapsulation structure of a vehicle may include an engine room encapsulation member disposed at an upper portion of an engine compartment and covering an upper portion of a power train having an engine and a transmission, an underbody encapsulation member disposed at a lower portion of the engine compartment and covering a lower portion of the power train, wherein the engine room encapsulation member and the underbody encapsulation member form an inner space and enclose the power train in the inner space when being assembled each other, and a front inlet formed at a front portion of the assembly to allow air through the front inlet and to cool the power train while the air passes through the inner space of the assembly, the air being discharged through a rear outlet formed to the assembly.

Disclosed in the present invention is a tandem starter-generator construction that includes an induction motor-generator, a permanent magnet motor-generator and power transmission unit disposed adjacent to the motor-generators. The induction motor-generator is utilized predominantly as a motor to provide mechanical power at relatively high efficiency as a motor, and as a generator to provide electrical power during regenerative braking. The permanent magnet motor-generator is used predominantly as a generator for very high efficiency power conversion and to capture additional electrical power during regenerative braking to compensates for the regenerative energy captured at lower efficiency by the induction motor-generator. Accordingly, the tandem motor-generator construction disclosed herein overcomes the drawbacks of low efficiency of an induction motor-generator operating in regenerative mode and a permanent magnet motor-generator magnetic drag losses during periods of non-utilization at high speeds in order to improve fuel efficiency of a parallel hybrid vehicle.

A detection device for internal combustion engines exhaust gases post-treatment systems has a casing (2, 3) housing a circuit arrangement (21, 31) including humidity sensor means (32), for measuring the humidity of the gas. The circuit arrangement further comprises temperature sensor means (33) and pressure sensor means (22), for detecting a gas temperature value and a gas pressure value, respectively. The gas temperature value can be used for compensating the humidity value obtained through the humidity sensor means (32) and the pressure value can be used for deducing the clogging degree of a filter of the post-treatment system. Preferably the pressure sensor means (22) are housed in a first chamber (8) of the casing (2-3) while the humidity sensor means (32) and the temperature sensor means (33) are housed in a second chamber (10b) of the casing (2, 3).

An electronic apparatus includes a drive for recording/reproducing a recording medium, and a sound absorbing member having a Helmholtz resonator for insulating sounds at a predetermined frequency among sounds generated by the drive.

A method of melt infiltration for producing a ceramic matrix composite comprises applying a surface slurry onto one or more outer surfaces of an impregnated porous preform. The surface slurry comprises a solvent and particulate solids, and the preform comprises a framework of ceramic fibers loaded with particulate matter. The surface slurry is dried to form a porous layer comprising the particulate solids on the one or more outer surfaces of the impregnated porous preform. After forming the porous layer, an end portion of the impregnated porous preform that includes at least part of the porous layer is immersed in a molten material, and the molten material is infiltrated into the impregnated porous preform from the end portion. The porous layer serves as a wick to transport the molten material over the one or more outer surfaces, thereby enabling melt infiltration of the impregnated porous preform from other portions thereof.

A motor cooling structure for efficiently cooling a driving motor in a power unit case of the electric vehicle includes a transmission case cover having an air filter mounted on a side surface of a transmission case adjacent to a fan, and a ventilation gap defined between a rear portion of the transmission case cover and the transmission case. The transmission case cover includes a cooling air inlet facing the ventilation gap. When the fan is rotated in synchronism with a crankshaft, an outside cooling air is introduced from the cooling air inlet into the transmission case cover and then passes through the air filter to enter the transmission case, thereby forcibly cooling a transmission. Thereafter, a part of the cooling air is discharged from a central air outlet to the outside of the transmission case, and the remaining cooling air is drawn to the driven portion of the transmission.

A volume or fluid level sensing system as taught by the present invention comprises a flexible bladder, a solenoidal coil, a means for volume or fluid level measurement, and a user interface. Means for volume or fluid level measurement are preferentially means for inductance measurement which may be selected from the set including timing inductive measurement means, AC voltage divider inductive measurement means, resonance inductive measurement means. A user interface may be selected from the set including a digital display, a data interface, a voltage level display device, or a current level display device. The solenoidal coil may be embedded in the flexible bladder or in a flexible sock encompassing the flexible bladder. In addition, a bladder volume or fluid level indicating method as taught by the present invention comprises the steps of inductance measurement, volume or fluid level inference, and volume or fluid level reporting.

A circuit configuration for an electric machine, e.g., a starter motor for starting an internal combustion engine in a motor vehicle, includes a current limiting device for limiting a starting current of the electric machine. The circuit configuration includes a bridging device for bridging the current limiting device.

The invention provides a long-fiber enhanced thermoplastic composite material vane used for a wind energy generator, which is composed of a long-fiber enhanced thermoplastic composite material, wherein the long fiber is glass fiber, carbon fiber or the composite fiber of glass fiber and carbon fiber; the content of the long fiber in the vane is 32-75wt%, the reservation length of the long fiber is 2.8-25mm and can form a mutually-tangled three-dimensional net structure characteristics, and therefore the product has a higher impact resistance, and especially has low-temperature impact resistance; the preferable size of the vane manufactured by the injection molding technology is 46-2200mm; the vane surface is provided with a primer layer; and the primer layer is sprayed with a UV (ultraviolet) photocuring light shade surface. In the product, the vane is manufactured by the injection molding technology, and the product has the excellent performances of simple production technology, low cost, long service life, low specific gravity, low-temperature warping deformation resistance, stable size, no water and moisture adsorption, high strength, low-temperature impact resistance, scratch resistance, ultraviolet aging resistance, chemical solvent corrosion resistance and the like.

The invention discloses a wind power blade tip lengthening method. By bonding a blade tip lengthening section with a basic blade through a structural adhesive to increase the length of the blade, the purpose of improving the generating capacity is achieved. On the premise that the appearance of the basic blade is not destroyed, the structural adhesive can be uniformly and fully applied to an bonding area of the blade tip lengthening section and the original blade by constructing an adhesive injecting system, therefore, the bonding strength is effectively improved, the construction complexity is reduced, the construction time is shortened, and the construction cost is lowered.

The invention discloses a method and a device for achieving sea wave energy transformation by using inertance, belonging to the technical field of sea wave energy utilization. With the adoption of the method and the device, the main technical problem of economically converting the sea wave energy into other energy modes which are convenient to use is solved. The method and the device are characterized in that a floating loading container is arranged on the sea; an inertial body is arranged in the loading container; random force and displacement which are difficult to use, are located between the inertial body and the loading container and produced by pushing effects of the sea wave are converted into force and displacement which can be directly used, and then an energy conversion device is used for converting the force and the displacement which can be directly used into hydraulic energy or electric energy. The method and the device are applicable to the technical fields of development and utilization of the sea wave energy, in particular to sea wave generation.

A capacitive liquid level detector for detecting a liquid level of a liquid in a receptacle, the liquid being conductive, the detector comprising: a capacitor with a first plate having a fixed size and being insulated from the liquid, and a second plate being formed by the liquid itself, its size being variable depending on the liquid level inside said receptacle, wherein a thin film dielectric layer is formed on the surface of the first plate and located between the first plate and the second plate, the first plate with the thin film dielectric layer formed on its surface is arranged such that it covers an open part of the outer wall of the receptacle, the first plate with the thin film dielectric layer formed on its surface is attached to the receptacle by sealing means in order to seal the receptacle against liquid leakage.