3393results about How to "Reduce wind resistance" patented technology

A mirror system for a vehicle comprising an exterior rearview mirror assembly, which includes a fixed portion which is configured to mount to a side of the vehicle. The movable portion includes a reflective element and a reflective element actuator. The reflective element has a generally rearward field of view when the mirror system is mounted to the vehicle. The reflective element actuator provides selective adjustment of an orientation of the reflective element to adjust the rearward field of view to a desired orientation, and the movable portion is movably mounted to the fixed portion. The movable portion actuator selectively moves the movable portion between a viewing position wherein the movable portion extends outwardly from the vehicle at an angle with respect to the side of the vehicle and another viewing position wherein said movable portion extends outwardly from the vehicle at another angle with respect to the side of the vehicle. The movable portion actuator is adapted to move the movable portion to one of the positions, and the reflective element actuator is adapted to generally maintain the rearward field of view at the desired orientation independent of the position of the movable portion.

A wireless bicycle communication device includes a bracket, an electronic switch, an antenna, a wiring assembly and a radio communication unit. The electronic switch is coupled to the bracket and configured to generate switching signals. The antenna is supported to an antenna receiving portion of the bracket. The wiring assembly electrically connects the antenna and a first connector. The radio communication unit is disposed within a radio unit receiving portion of the bracket and has a second connector configured to detachably mate with the first connector. The radio communication unit is configured to process switching signals from the electronic switch and broadcast corresponding radio signals via the antenna.

A trailer body employs hollow and generally rectangular dual wall tubes stacked, interlocked and welded on both sides continuously to form each side of the trailer body. The extrusion walls are of varying thickness to minimize weight and maximize strength and durability.

The invention discloses an indoor machine of a two-tubular air conditioner, which comprises a housing, a left and a right tubular fan wheels, a heat exchanger, an air inlet and an air outlet, wherein the housing consists of a front panel assembly and a shell; the left and the right tubular fan wheels are vertically arranged in the housing; the heat exchanger is arranged in the housing and positioned at the rear side of the tubular fan wheels; the air inlet is arranged behind the housing and the air outlet is arranged in front of the housing; the shell is connected to the rear side of the front panel assembly, the inner side of the shell is provided with a box body corresponding to the heat exchanger; back parts of the box body and the shell protrude outwards, the protruding part of the box body is provided with the air inlet, and the protruding part of the shell is provided with an air inlet window corresponding to the air inlet; the heat exchanger is bent towards the protruding direction of the back of the box body and arranged at a position close to the air inlet; and the housing is also internally provided with a volute assembly positioned between the two tubular fan wheels, the volute assembly comprises a left volute, a right volute, and a connecting bulge for connecting the left volute and the right volute together, and the connecting bulge extends to the position close to the heat exchanger. The invention has the advantages of larger air inlet area, compact assembly, low cost, small noise and high heat exchange efficiency.

A digital camera system providing two different image capture systems, comprising a camera body including a first surface having an image display; a second surface opposite to the first surface; a third surface transverse to the first and second surfaces and having a smaller surface area than the first and second surfaces; and a fourth surface opposite to the third surface. A first image capture system has a first optical axis directed outward from the second surface, and a second image capture system has an optical axis directed outward from the third surface. Camera mounts are provided on the fourth and first or second surfaces to facilitate mounting the digital camera system such that either the first optical axis or the second optical axis can be oriented in a substantially horizontal direction.

A pivoting cage cargo bed extender is pivotally mounted to the D-pillars of a pick-up truck to be pivotally movable between a forward position and a rearward position. In the rearward position, the pivoting cage serves as a supplemental tailgate structure that rests on the open tailgate to extend the operative area of the cargo bed. The pivoting cage is formed of individual segments that are hinged together and separable at the center into two halves that are each collapsible into a stowed position adjacent the respective side wall of the cargo bed. The two halves of the cargo bed are connectable with a latching mechanism at the center to form a pivoting cage structure that spans transversely across the floor of the cargo bed. The latching mechanism compresses an internal O-ring to provide a tight connection between the two halves.

Configurable large-area display system with a display (114) comprising a plurality of sub-displays that each contain an array of pixels (122), characterized in that it further comprises a central controller hardware and software block (110) containing software to control the display system (100) and to generate control data and video signals to be displayed on the display (114); a digitizer (112) that converts said control data and video signals to a digital signal compatible with the display (114); whereby the digitized control data and video signals are passed from one sub-display to the next, and whereby each sub-display is a control unit (116) capable of controlling the individual pixels (122) of said control unit (116) as a function of its position within the display (114) and of the received control data and video signals.

The present invention relates to metal carrier for automobile tail gas purifier catalyst and its preparation process, and solves the technological problem in providing metal carrier with simple formation process and low production cost. The metal carrier features its 3D netted structure with skeleton of metal nickel or nickel coated copper, and has porosity of 30-98 %, pore number of 20-60 PPI and pore size of 0.5-3 mm. The preparation process includes the following steps: treating foamed polyurethane or polyether plastic via chemical plating or vacuum vapor depositing to coat carbon-base conducting material; electrically depositing matrix metal of nickel or copper coated nickel; and burning out foamed plastic base in a pyrolysis oven. The metal carrier is mainly used as carrier for automobile tail gas purifier catalyst.

A light emitting diode (LED) assembly with a vented printed circuit board is disclosed. A printed circuit board assembly may include a plurality of LED modules disposed in an array with a multilayered substrate and a plurality of vents. The multilayer substrate may include a thermal cooling layer which is in thermal communication with the LED modules for heat dissipation. The multilayer substrate may include one or more electrical power layers in electrical communication with the LED modules for energizing the LEDs. The multilayered substrate may have an external insulating layer that includes a plurality of fluid apertures configured for fluid communication with the thermal cooling layer.

An air-guiding assembly for reducing the wind drag is provided at a tail end of a vehicle body and has a hollow frame. The frame is constituted of a plurality of air-guiding plates. These air-guiding plates are each formed into a curved shape. An airflow path is formed between the air-guiding plates. The front end surface of the frame is formed with an intake port, and the rear end surface thereof is formed with an exhaust port. The intake port and the exhaust port are in fluid communication with the airflow path. The area of the intake port is larger than that of the exhaust port, so that the exhaust port acts as a nozzle. When the airflow generated in driving is compulsively guided into the intake port of the frame to pass through the airflow path and then is guided out via the exhaust port, an invisible wind wall is formed in the rear of the vehicle, thereby reducing a whirlwind region in the rear of the vehicle. Therefore, the airflow is smoother and thus the driving efficiency is improved.

A mask for being worn over the nose and mouth of a wearer, and a panel having sufficient transparency to permit visual observation of the mouth of the wearer. The panel is formed from first and second overlying transparent, pleated films perforated with elongate slits sized to permit two-way transit of gases, but not liquids, under atmospheric pressure. The first and second films each include a multitude of projections for maintaining between the first and second films a multitude of tortuous flow paths for permitting respiratory gas flow through the panel.

A wireless bicycle communication device includes a bracket, an electronic switch, an antenna, a wiring assembly and a radio communication unit. The electronic switch is coupled to the bracket and configured to generate switching signals. The antenna is supported to an antenna receiving portion of the bracket. The wiring assembly electrically connects the antenna and a first connector. The radio communication unit is disposed within a radio unit receiving portion of the bracket and has a second connector configured to detachably mate with the first connector. The radio communication unit is configured to process switching signals from the electronic switch and broadcast corresponding radio signals via the antenna.

The invention relates to an air purification material and a preparation method and application thereof, belonging to the technical field of chemical catalytic decomposition, in particular belonging to the technical field of decomposition of formaldehyde pollutants in environment air. The air purification material comprises a base material and manganese oxide, wherein the manganese oxide is supported on the base material, the base material is honeycomb ceramics or a fiber material with a particle filtering function, and the manganese oxide is birnessite manganese oxide prepared from permanganate and oxalate. The air purification material can effectively decompose formaldehyde pollutants in indoor air and can rapidly and constantly remove the formaldehyde pollutants in indoor air at room temperature. The air purification material can be regenerated through heating, so that the service life of the material is prolonged and the practical application is facilitated.

The invention relates to a metal carrier loaded catalyst for purifying formaldehyde at a room temperature. The catalyst comprises a metal carrier, porous inorganic material loaded on the metal carrier, noble metal active components loaded on the porous inorganic material and an additive, wherein the metal carrier is aludirome, the noble metal is any one or a mixture of at least two of platinum, rhodium, palladium, gold or silver and the additive is any one or a mixture of at least two of alkali metal simple substance, alkali metal compound, alkaline earth metal simple substance or alkaline earth metal compound. By the metal carrier load catalyst for purifying formaldehyde at the room temperature, most or all formaldehyde can be converted into carbon dioxide and water; by-products such as formic acid, carbon monoxide and methyl formate are not generated; and the formaldehyde conversion rate can be up to 100%.

The invention discloses a built-in plug door device for a rail vehicle. The device comprises a control mechanism, a driving mechanism, a bearing mechanism, a compaction mechanism, a guide chute and a door leaf; the bearing mechanism comprises a guide post, two sleeves, a connecting rod, a sliding block and a guide wheel; and the control mechanism is respectively connected with the driving mechanism and the compaction mechanism. The advantages of an outward swing plug door and a built-in side sliding door are combined in the built-in plug door device, and the problem of smooth appearance of the built-in side sliding door is solved by plug movement; the outer side of the body is smoother, the influence of high-speed running pressure wave on the door leaf is reduced, and high-speed running noise is reduced; the body is 140 millimeters wider than the body using the outward swing plug door; and when the plug process of the door leaf is finished, the door leaf is compacted on the body, and the possibility that the door leaf drops outwards is totally limited, so safety and sealing reliability are improved.

A light emitting diode (LED) assembly with a vented printed circuit board is disclosed. A printed circuit board assembly may include a plurality of LED modules disposed in an array with a multilayered substrate and a plurality of vents. The multilayer substrate may include a thermal cooling layer which is in thermal communication with the LED modules for heat dissipation. The multilayer substrate may include one or more electrical power layers in electrical communication with the LED modules for energizing the LEDs. The multilayered substrate may have an external insulating layer that includes a plurality of fluid apertures configured for fluid communication with the thermal cooling layer.

Waveguide or flow guide surfaces can improve the efficiency of fluid flow through tubes or over surfaces. When incorporated in a tube, the waveguides improve flow and function as sound absorbers making them useful in engine mufflers, firearm silencer / suppressors and jet engine exhaust attenuators. On surfaces, the waveguides can reduce fluid drag and find use on projectiles (e.g., bullets), airfoils for aircraft, and land borne vehicles. The waveguide array in either a tubular chamber or on a surface comprises a plurality of successive wave-like undulations inclined generally in the direction of flow and when employed in tubes extending inwardly to permit an unobstructed path for the fluid gas from entry to exit. The waves define annular wave cavities between their successive inwardly extending edges and the wall of the chamber with each cavity having a cavity mouth open to the unobstructed path. The waveguides are sized and spaced so that gas vortices are created within the cavities when gas flow occurs which vortices create a fluid boundary layer that assists the gas flow.

The invention discloses a vehicle queue stability control method considering communication delay. The method comprises the steps that 1, a vehicle queue following mathematical model is established; 2,a nonlinear lower layer control gain is constructed by a feedback linearization strategy, and a node power unit is described as a node linear model; 3, a high-dimensional closed-loop state equation of a vehicle queue following control system under dynamic parameter uncertainty is established; 4, sufficient conditions are used for giving sufficient conditions that a vehicle queue with communication delay has a stabilization controller under the symmetric communication topology; and 5, the stabilization controller is constructed to obtain a controller gain so as to control static feedback control of a distributed controller, and the stability of the vehicle queue following control system is ensured. The method can ensure the stability of the vehicle queue following control system, reduces the vehicle queue following interval, increases the traffic flow, and reduces the energy consumption.

The invention discloses a heat exchanger with a micro-channel, parallel-flow and all-aluminum flat pipe welding structure. The heat exchange part of the heat exchanger is formed by arranging flat pipes consisting of aluminum extruded thin-walled sections in parallel. Compared with the prior art, the heat exchanger with the micro-channel, parallel-flow and all-aluminum flat pipe welding structure has the advantages that: 1, the heat exchange efficiency of a refrigerant and the inner walls of the flat pipes is improved by 40 percent, and the flow resistance of the refrigerant in collecting pipes of the heat exchanger is reduced by 40 percent; 2, the heat exchange efficiency of fins on an air side is improved by 40 percent, and the wind resistance of the heat exchanger on the air side is reduced by 40 percent; 3, the heat exchange performance of the whole heat exchanger is improved by 40 percent; 4, compared with the prior art, the heat exchanger consumes 40 percent less refrigerant; and5, compared with the conventional copper-aluminum structure, the all-aluminum structure endows the heat exchanger with longer service life because of no copper-aluminum potential differences. The heat exchanger adopting the flat pipes has the characteristics of capability of bearing the conventional limitation of high-pressure resistance value of the refrigerant, compact product structure, light unit weight, short process flow, high manufacturing reliability and relatively lower cost. The invention also discloses the application of the heat exchanger.

The invention discloses a variable-frequency variable-pressure electronic type efficient air purifier. The variable-frequency variable-pressure electronic type efficient air purifier comprises a primarily efficient filter screen positioned at the front end, wherein an insulating framework is arranged behind the primarily efficient filter screen; a PCB pin base, an ion emission pin and a grounding stainless steel plate are arranged in the insulating framework from front to rear in sequence; the ion emission pin is connected to a variable-frequency variable-pressure type ion generator; an ion air outlet which corresponds to the ion emission pin is arranged on the grounding stainless steel plate; a honeycomb type electrostatic electret filter screen is arranged behind the insulating framework; and the polarity of charge of the honeycomb type electrostatic electret filter screen is reverse to that of charge released by the variable-frequency variable-pressure type ion generator. The variable-frequency variable-pressure electronic type efficient air purifier realizes various functions of condensation, electrostatic adsorption, sterilization and fitness on fine particles in air, and also avoids obvious defects of high noises, much peculiar smell and high energy consumption of the conventional purifying technology.

A tiltable top is provided for a small boat which allows the boat operator to quickly, manually raise or lower the top as desired. The tiltable top includes a pivotal shade frame and cover which is retained in a normal horizontal position during use or which can be released and allowed to pivot to an acute horizontal angle to lower wind resistence of the boat when the top is lowered.

The invention discloses an intelligent grouping vehicle system, comprising a guiding vehicle module and following vehicle modules, wherein the number n of the following vehicle modules is determined by the actual traffic demand, wherein n can be 0; the guiding vehicle module of a vehicle queue can at least realize full-automatic driving of L4 level; the following vehicle modules of the vehicle queue can achieve the basic functions of automatic grouping and separation, automatic following and automatic parking; the modules of the vehicle queue realize information interaction and sharing throughwireless communication; and the modules of the vehicle queue can be remotely controlled by a dispatching center, and automatic grouping, automatic separation and automatic parking in a station are performed. The intelligent grouping vehicle system disclosed by the invention comprises one guiding vehicle module and a plurality of following vehicle modules. There is no physical connection among themodules, flexible grouping is achieved, the distance between vehicles can be reduced, the windage is reduced, the energy consumption is reduced, and the transportation efficiency is improved.

The invention discloses a micro channel heat exchanger for an air-conditioner heat pump. The heat exchanger comprises an upper head pipe, a lower head pipe, a plurality of flat pipes and a plurality of fins, wherein the upper head pipe is parallel with the lower head pipe; the plurality of flat pipes connect the upper head pipe and the lower head pipe and are parallel at intervals; opening holes communicating with the insides of the upper head pipe and the lower head pipe are reserved in the flat pipes; the plurality of fins are arranged between adjacent flat pipes along the length direction of the flat pipes; and the distribution density of the fins is reduced gradually from the upper head pipe to the lower head pipe along the length direction of the flat pipes. According to the micro channel heat exchanger, the air side heat transfer coefficient of the heat exchanger can be improved and the air side flow resistance can be reduced; and the surface tension born by condensate water on the surfaces of the flat pipes is low both under cooling and heating working conditions and the condensate water is hard to stay in gaps of the fins, so that the wind resistance is reduced and heat transfer is not influenced, the discharge of the condensate water is improved, and frost formation is also improved at the same time.

The present invention is a wind power apparatus for driving an electric generator. The wind power apparatus comprises a frame, a vertical axle mounted on the frame and a buoyant hull. The buoyant hull is rotational disposed on the axle. The buoyant hull has a curvilinear side surface. The wind power apparatus further comprises a fan. The fan is mounted on the buoyant hull such that wind rotating the fan rotates the buoyant hull. The wind power apparatus further has a drive wheel. The drive wheel is disposed in close cooperation with the curvilinear of the surface of the buoyant hull such that rotation of the buoyant hull rotates the drive wheel. The drive wheel is adapted to be in driving engagement with an electric generator such that rotation of the drive wheel turns the electric generator to generate electricity.

The invention relates to an air inlet grille control method and device and an engine management system. The air inlet grille control method comprises the steps that the current operation conditions of a vehicle are obtained, wherein the current operation conditions comprise the first current temperature of cooling liquid, the current vehicle speed, the current duty ratio of a pulse width modulation fan, the current on-off status of a fan and the current exhaust temperature; the target opening degree of an air inlet grille is determined according to the obtained current operation conditions of the vehicle and the unit angle, wherein the unit angle is the angle of each preset equally-divided part of the included angle between the minimum position when a motor is turned off and the maximum position when the motor is turned on; and the determined target opening degree of the air inlet grille is sent to the motor so as to enable the motor to adjust the opening degree of the air inlet grille according the received target opening degree. By adoption of the air inlet grille control method and device and the engine management system, the dynamic property and the fuel economy performance of the whole vehicle can be improved, and carbon emission is reduced.

The invention provides a telescopic device which comprises a first telescoping mechanism, a second telescoping mechanism, a horizontal telescoping mechanism, a mounting seat, a first mounting board and a second mounting board, wherein a first end of the first telescoping mechanism and a first end of the second telescoping mechanism are hinged with the mounting seat respectively; a second end of the first telescoping mechanism and a second end of the second telescoping mechanism are hinged with the first mounting board and the second mounting board respectively; and a first end and a second end of the horizontal telescoping mechanism are hinged with the first mounting board and the second mounting board respectively. The invention further provides a vehicle provided with the telescopic device. With the adoption of the telescopic device and the vehicle, the wheelbase and the tread of the vehicle can be adjusted respectively or simultaneously.

The invention discloses a compound VOCs absorbing concentration turning wheel and a use method thereof and belongs to the technical field of absorption of organic gas. The compound VOCs absorbing concentration turning wheel is formed by coaxially equal-diameter butt-jointing a molecular sieve turning wheel and a honeycomb activated carbon turning wheel, wherein the honeycomb activated carbon turning wheel is located on a VOCs inlet side; an absorbing area, a desorption area and a cooling area are arranged on each turning wheel; an isolating ring is arranged at the butt-joint of the two turning wheels; the isolating ring is used for isolating the absorbing areas, the desorption areas and the cooling areas of the two running wheels, redistributing wind and reducing wind resistance; the molecular sieve turning wheel is acquired by attaching the VOCs adsorbent to the honeycomb turning wheel in the manner of spraying, leaching or impregnating. According to the invention, the molecular sieve turning wheel and the honeycomb activated carbon turning wheel are combined with each other, so that the absorbing scope is widened, the purifying efficiency is increased, the quality of purified gas is further ensured and the occupied space of equipment is saved.

A liquid cooling type heat-dissipating device for exchanging heat with a heat source is provided, which includes a heat-dissipating fan, a pump, a liquid pipe, a motor, and a heat-dissipating block. The motor drives the heat-dissipating fan and the pump. Two ends of the liquid pipe are connected to the pump so as to form a fluid loop, wherein the liquid pipe is in contact with the heat-dissipating block, and the heat-dissipating block is disposed on the heat source. The liquid pipe is continuously curved on a segment away from the heat-dissipating block to form a curved portion located on a wind output path of the heat-dissipating fan, therefore, the heat-dissipating fan cools the curved portion by blowing wind, so as to increase the speed of temperature dropping thereby improving the heat dissipation performance of the liquid pipe.