145results about How to "Avoid pressure drop" patented technology

An apparatus and method to treat fluid streams, and in particular emissions from lean-burn engines such as diesel engines, are disclosed, which use multiple catalysts chosen to remove hydrocarbons, carbon monoxide, particulate matter, and oxides of nitrogen. The apparatus and method also provide for heat exchange between the inlet and outlet exhaust streams to sustain the catalyzed reactions, by placing the catalysts in the temperature zones where their operation is enhanced, and they also allow for regeneration of a filter used to trap particulate matter in the streams.

An embodiment of the invention provides an OLED array substrate, a manufacturing method and a display apparatus thereof and relates to the display technology field. A resistance of a second electrode layer can be reduced. The OLED array substrate comprises a first electrode layer, a first pixel definition layer, an auxiliary electrode, an organic layer and the second electrode layer, wherein the first electrode layer is arranged on a substrate and includes a plurality of first electrodes; the first pixel definition layer is arranged on the first electrode layer and includes opening areas and a pixel definition area used for defining the opening areas, and one first electrode is exposed from each opening area; the auxiliary electrode is arranged on the first pixel definition layer and is located in the pixel definition area; the organic layer is arranged in the opening areas of the first pixel definition layer; and the second electrode layer is arranged on the organic layer and the auxiliary electrode, and the second electrode is contacted with the auxiliary electrode and the organic layer. The method and the display apparatus are used for the OLED array substrate.

A breathing apparatus has a first delivery device for adding a volume of a substance to a gas flow, the delivery device having a gas inlet and a gas outlet. A unit monitors a presence of the substance in a gas downstream the delivery device using a first sensor unit at the gas outlet that provides a first measurement value based on an acoustic property of a gas in a first conduit. A second sensor unit at the gas inlet provides a second measurement value based on an acoustic property of a gas present in the second conduit. A control unit determines the presence of the substance based on the first measurement value or based on a comparison of the first measurement value and the second measurement value.

In the case of a shaft arrangement having a shaft (7) which extends within a casing (1) filled with a fluid and which can be actuated by means of a drive (8) from outwith the casing (1), the shaft (7) having on its outer peripheral surface a surface structure which conveys the fluid in a flow direction (30) in the longitudinal direction of the shaft during rotation, a sleeve (19) is provided according to the invention, which can rotate with the shaft and has at least one conveying element (20) for conveying the fluid in a counterflow direction opposite to the flow direction. As a result, a bubble-free conveyance of the fluid along the shaft (7) is facilitated.

The invention provides organic light-emitting diodes (LEDs) and an organic LED displayer composed of the same. Each organic LED comprises a substrate which comprises a pixel electrode area and an auxiliary electrode area, and an insulating layer formed between the pixel electrode area and the auxiliary electrode area, wherein the pixel electrode area comprises a first electrode formed on the substrate, an organic layer formed on the first electrode and a second electrode formed on the organic layer, and the auxiliary electrode layer comprises an auxiliary electrode formed on the substrate and a shielding structure formed on the auxiliary electrode or on the insulating layer. The shielding structure shields partial auxiliary electrode, and the second electrode is in electric connection with the auxiliary electrode.

A fuel vapor storage and recovery apparatus for a fuel system of a motor vehicle including an internal combustion engine with an exhaust pipe and a fuel tank containing a fuel vapor / air mixture above a liquid fuel, the exhaust pipe being close to the fuel tank. The apparatus includes a vapor storage canister including a fuel vapor adsorbent material therein, a thermal insulation mechanism for thermally insulating at least a portion of the fuel tank from the heat generated by the exhaust pipe, and a beat exchanger. The heat exchanger is configured to heat to a purge temperature air guided there through by absorbing heat from the thermal insulation mechanism.

A multi-stage restrictor includes an inlet plate, plates also being known as circular wafers, having a central non-restrictive aperture, a top fluid manipulation plate, an inter link plate, a bottom fluid manipulation plate and an exit plate disposed in stacked relation. An elongate channel interconnects pairs of circular lobes in the top and bottom fluid manipulation plates. In a multi-stage restrictor, a taper between five to ten degrees is formed in each of the channels of the top and bottom fluid manipulation plates. In a pressure spike attenuator, the taper is about fifteen to thirty degrees. In a static mixer, chevron-shaped protuberances are added to the tapered channels, one protuberance on each side of the each channel and each channel has a protuberance at its opposite end.

The invention relates to a voltage stabilizer capable of dynamically adjusting bias current according to load frequency and output voltage. The voltage stabilizer comprises a band-gap reference, an operational amplifier, a feedback resistor string and a power tube, the band-gap reference is used for generating reference voltage Vref and inputting the same to a reverse input end of the operational amplifier, the feedback resistor string is connected with a forward input end of the operational amplifier and comprises a resistor R1 and a resistor R2 which are serially connected sequentially, one end of the resistor R1 is connected with a drain end of the power tube, the other end of the resistor R2 is grounded, a source end of the power tube is connected with a VDD power source while a grid end of the same is connected with an output end of the operational amplifier, and the voltage stabilizer further comprises a frequency detection circuit, a bias current generating circuit and an output voltage detection circuit. The voltage stabilizer is adopted to solve the technical problem that existing low dropout regulators LDO are high in power consumption; when frequency of a load digital circuit is high, overlarge voltage drop of the LDOs can be avoided.

A segmented labyrinth seal (10) having a windback configuration formed around a rotatable shaft for preventing leakage of oil from a bearing housing having a first face (22) and a second face (23). An exterior cylindrical surface (19) and an interior cylindrical surface (18) extend between the first face (22) and the second face (23). A thread pattern (40) provided on the interior cylindrical surface (18) providing the windback configuration, and configured in a right-hand direction or a left-hand direction. A plurality of profiled teeth (41) form the thread pattern (40) and have first sides (43), second sides (44), and connecting sides (45) extending between the first sides (43) and the second sides (44). Leading edges (47) are formed where the first sides (43) join the connecting sides (45), and trailing edges (48) are formed where the second sides (44) join the connecting sides (45). The first sides (43) and the second sides (44) are slanted toward the first face (22). A pressure drop is taken over the plurality of profiled teeth (41). A channel (C) tracing the thread pattern (40) is formed between the first sides (43) and the second sides (44) of adjacent teeth of the plurality of profiled teeth (41), the channel being adapted to capture the oil from the bearing housing, and returning the oil to the bearing housing without the need for axial drain holes.

An apparatus and method to treat fluid streams, and in particular emissions from lean-burn engines such as diesel engines, are disclosed, which use multiple catalysts chosen to remove hydrocarbons, carbon monoxide, particulate matter, and oxides of nitrogen. The apparatus and method also provide for heat exchange between the inlet and outlet exhaust streams to sustain the catalyzed reactions, by placing the catalysts in the temperature zones where their operation is enhanced, and they also allow for regeneration of a filter used to trap particulate matter in the streams.

The invention discloses a voltage compensation circuit and method of a grid electrode driver and a liquid-crystal display device. The voltage compensation circuit comprises a voltage detection unit, a digital comparison correction unit and a voltage adjustment unit. The voltage detection unit detects an input voltage of the grid electrode driver and transmits the input voltage to the digital comparison correction unit. The digital comparison correction unit further receives a reference voltage provided by a controller arranged outside the grid electrode driver and compares the input voltage with the reference voltage so as to generate a correction control signal and transmit the correction control signal to the voltage adjustment unit. The voltage adjustment unit adjusts the input voltage according to the correction control signal and outputs a target voltage. The grid electrode driver outputs the target voltage to a liquid-crystal display panel. According to the mode, a scanning voltage which is transmitted to the grid electrode driver can be adjusted, the voltage drop existing among the output voltages of different grid electrode drivers is avoided, therefore, the display mura phenomenon of the liquid-crystal display panel is solved, and the display quality is improved.

A compressor bypass valve for multistage supercharging an internal combustion engine equipped with a supercharging system. The valve includes a displacement body accommodated in a valve housing. The displacement body is divided into a first displacement part and a second displacement part. The first displacement part, facing the upstream side, moves to close or open the bypass in response to a pressure differential.

The invention relates to a solid-base monolithic catalyst with regular porous channels and a preparation method of the solid-base monolithic catalyst as well as an application of the solid-base monolithic catalyst in preparing biodiesel continuously. In the solid-base monolithic catalyst, a honeycomb ceramic with regular straight porous channels is taken as a carrier, and load-type hydrotalcite and hydrotalcite-like solid base which have high activities are loaded on the carrier, so that the solid-base monolithic catalyst with the regular porous channels is prepared. By utilizing the solid-base monolithic catalyst with the regular porous channels provided by the invention, the bed pressure drop in a fixed bed reactor can be greatly reduced. The solid-base monolithic catalyst with the regular porous channels can be applied to continuous fixed bed for biodiesel, has the characteristics of high production efficiency and long service life and is friendly on environment, the cost of the equipment is low, and the energy consumption is low.

The invention discloses an ultra-narrow frame liquid crystal display and a chip-on-film (COF) packaging structure of a drive circuit thereof. The packaging structure comprises a whole flexible circuit board, wherein one side of the whole flexible circuit board is jointed with a frame region of a glass substrate of the liquid crystal display, and the whole flexible circuit board serves as a COF type flexibly-packaged carrier band. Multiple drive chips are respectively jointed with the whole flexible circuit board in the scanning direction in sequence, and signal circuits among adjacent drive chips are arranged on the whole flexible circuit board. In the COF packaging structure, the whole flexible circuit board is utilized to move the signal circuits required by drive integrated circuits (IC) to a COF from the glass substrate, so that pressure drop caused by wiring resistance value increase of the drive IC during large-size ultra-narrow frame design can be avoided, a phenomenon that the large-size ultra-narrow frame enables input voltage transferred to the drive IC to produce pressure drop and accordingly panel color is uneven is avoided, and the product quality is improved.

A fuel injection apparatus has a pressure booster located between a high-pressure reservoir and a nozzle chamber. A high-pressure chamber of this fuel injection apparatus communicates with the pressure line with a control chamber which actuates an injection valve member of a fuel injector and with the nozzle chamber. A compensation device is connected to a high-pressure line between the high-pressure reservoir and the fuel injector produces a throttled connection or an unthrottled connection between the high-pressure reservoir and the fuel injector.

To clean the recording head, the printer seals the nozzles with a cap member, thus forming a closed circulation system. In this state, the gear pump is activated to suck waste liquid and air from the cover member. Then, waste ink and air are introduced into the first ink tank by sequentially flowing in the cap member, the check valve, the tube, the gear pump, and a different tube. Air is introduced into the second ink tank as pressurized air through a corresponding tube. A check valve prevents waste ink and pressurized air from returning to the cover assembly. This suppresses backflow of liquid and air, and ink ejection is efficiently performed.

The invention relates to a quickly responded low dropout regulator capable of dynamically adjusting a reference voltage. The low dropout regulator comprises a band gap reference, an operational amplifier, a feedback resistor string and a power tube; the feedback resistor string is connected to the positive input end of the operational amplifier; one end of the feedback resistor string is connected to the drain terminal of the power tube; the other end of the feedback resistor string is connected to the ground; the source terminal of the power tube is connected to a VDD power supply; the gate terminal of the power tube is connected to the output end of the operational amplifier; the low dropout regulator further comprises a fixed reference voltage generating circuit, a threshold comparing circuit, a dynamic reference voltage generating circuit and a selector. The low dropout regulator disclosed by the invention solves the technical problem that the existing LDO (low dropout regulator) has high power consumption; through dynamical adjustment of the reference voltage of the LDO, a response speed of the LDO is increased, and a large voltage drop of the LDO is avoided.

The invention relates to a quick-response low-dropout regulator. The quick-response low-dropout regulator comprises a band-gap reference, an operational amplifier, a feedback resistor string and a power tube, wherein the band-gap reference is used for generating reference voltage Vref and inputting the reference voltage to a negative input end of the operational amplifier, the feedback resistor string is connected with a positive input end of the operational amplifier, one end of the feedback resistor string is connected with a leak end of the power tube, the other end of the feedback resistor string is grounded, a source end of the power tube is connected with a power source VDD, and a grid end of the power tube is connected with the output end of the operational amplifier. The quick-response low-dropout regulator further comprises a reference voltage generation circuit, an NMOS (N-channel metal oxide semiconductor) transistor M1 and a PMOS (P-channel metal oxide semiconductor) transistor M2, wherein the input end of the reference voltage generation circuit is connected with the band-gap reference, the reference voltage generation circuit is used for generating reference voltage vbn and vbp. The quick-response low-dropout regulator solves the technical problem of high power consumption of an existing low-dropout regulator LDO, and too much voltage drop and overshoot is avoided by adding a part of auxiliary circuit.

The invention provides an LCOS (Liquid Crystal On Silicon) displayer and electronic equipment. A reflecting mirror heap which is originally disposed above a pixel electrode layer is changed to be disposed below the pixel electrode layer, thus, on the one hand, light diffraction caused when the conventional reflecting mirror heap is disposed above the pixel electrode layer can be reduced and a higher reflectivity is implemented; on the other hand, the thickness of a pixel electrode is beneficially reduced, a voltage drop generated by an applied voltage on the reflecting mirror heap can be avoided, the problem that the applied voltage on a liquid crystal layer is reduced by an additional load introduced by the reflecting mirror heap is solved, the high reflectivity of the reflecting mirror heap is beneficially implemented, meanwhile, the liquid crystal layer obtains an accurate voltage to guarantee accurate voltage control of the LCOS displayer; and the product performance is improved and mass production of products with higher reflectivity and performance is facilitated.

The invention discloses a large thrust ratio, long-working micro-ablation throat insert and a throat structure of an expansion section. The throat structure comprises a throat insert, a backing, a bottom lining and a thermal insulation blanket of the expansion section; the external surface of the throat insert matches with a first step surface of the backing; the bottom of the backing is plastered on a second step surface of a bottom lining; the thermal insulation blanket of the expansion section matches with a third step surface of the bottom lining; the second step surface and the third step surface are on the same level; at the same time, the backing and the thermal insulation blanket of the expansion section are plastered in a circumference direction. <{EN3}>Compared with prior art, the advantages and beneficial effects are that large thrust ratio and long-working are satisfied; the throat assembly has the characteristics of micro-ablation; a good heat insulation effect in long working time is realized; intensity of a jet pipe housing is guaranteed; throat ablation amount is prevented from being overlarge and causing an obvious decrease of a secondary work pressure intensity; shock wave backflow can be prevented; and engine energy loss is avoided.

The invention relates to a method for sifting a mixture of milled material and a fluid and to a mill sifter, in particular for carrying out the process according to the invention. To improve the milling-sifting process and the subsequent dust separation and, in particular, to optimize the energy balance of a milling installation, it is envisaged according to the invention not only to reduce or eliminate the swirling of the stream of fine material and fluid emerging with an angular momentum from the dynamic part of the sifter but also to make it more uniform and deflect it into a virtually linear flow with the aid of a distributor (15) and a displacer (20) in a sifter outlet housing. The fixed distributor (15), arranged coaxially in relation to the axis of the sifter (20) in the sifter outlet housing, and the displacer may be formed as one unit and the directing elements of the distributor may be arranged on the displacer, reaching almost as far as the inner wall of the sifter outlet housing.

The present invention relates to a warm-cold extrusion hydraulic press proportional direct-driving system. Said system includes the following components: dead-weight quick falling block, main cylinder, pump outlet valve block, liftout valve block, liftout cylinder, proportional pump, oil tank, plug-in components, electromagnetic valves and control device. Said invention also provides their connection mode. Said invention is applicable to tension process of various materials and forms.

An engine for a vehicle includes a cam chain tensioner actuated by pressure of lubricating oil for stabilizing a movement of a cam chain, a lubricating oil passage through which the lubricating oil is supplied to cam shafts in a cylinder head and a branched lubricating oil passage, branched from the lubricating oil passage, through which the lubricating oil is supplied to the cam chain tensioner. The branched lubricating oil passage is branched from the lubricating oil passage at a portion on an upstream side of an orifice in the lubricating oil passage located upstream of the cylinder head, and in communication with the cam chain tensioner.

A heat exchanger assembly including first and second manifolds for transferring heat between a coolant and a flow of air. Tubes extend between the manifolds for conveying the coolant therebetween. Air fins are disposed between adjacent tubes, and each air fin has a cross-section presenting a legs extending between the adjacent tubes at equal and opposing angles to one another and bases interconnecting alternate ends of the adjacent legs to present a serpentine pattern. Each base extends through an arc between the ends of the adjacent legs and defines a lead-in radius interconnecting each base with one of the legs and an exit radius interconnecting each base with the end of the adjacent leg. The equal and opposing angles are in the range of 1 to 4 degrees. The lead-in and exit radii are in the range of 0.05 to 0.15 mm. The middle radius is in the range of 0.5 to 1.5 mm.