35results about How to "Reduce thermal power consumption" patented technology

The invention provides a method for reducing the friction between the piston and the cylinder wall of an internal combustion engine, comprising the following steps: (a) constantly guiding the lubricating oil to flow to the surface of the piston skirt through the through hole provided on the piston skirt during the movement of the piston and (b) storing lubricating oil in the groove provided on the piston skirt and the non-through hole of the piston skirt, so that a sufficient amount of lubricating oil is always applied between the cylinder wall of the internal combustion engine and the surface of the piston skirt lubricating oil, and isolate the metal contact between the cylinder wall and the piston skirt, and finally reduce the friction between the piston skirt and the cylinder wall, reduce the internal combustion engine friction work loss, heat power consumption, and improve the internal combustion engine Higher power output, lower fuel consumption, noise and emissions. To achieve the dual benefits of fuel saving and environmental protection. In order to achieve the purpose of the method and steps for reducing the friction between the piston and the cylinder wall of the internal combustion engine, the invention provides a fuel-saving piston of the internal combustion engine, the piston comprising: a piston skirt, a piston skirt wall, and a piston ring. A plurality of grooves are formed in the piston skirt, a plurality of through holes are formed in the piston skirt, and a plurality of non-through holes are formed in the piston skirt. The piston skirt groove provides storage lubricating oil, the piston skirt through hole provides supply lubricating oil, and the piston skirt non-through hole provides storage lubricating oil. The present invention can be widely applied to: internal combustion engines, including vehicles, ships, tanks, generators, mining machinery, compressors and the like. The fuel saving effect and environmental protection benefit are very remarkable.

The invention provides a coring bit suitable for soft-hard drilling objects. The coring bit comprises a bit base body and a conical head arranged below the bit base body, wherein the bit base body is in a hollow cylinder shape; a drill stem connecting part is arranged at the upper end of the bit; the inner diameter of an opening of the conical head is smaller than the inner diameter of the hollow cylinder of the bit base body; an external spiral is arranged on the outer surface of the bit base body; grooves are formed in the inclined surface and the bottom surface of the conical head; cutting tools with corresponding shapes are arranged in the grooves and are riveted in the grooves through rivets; a limiting piece for limiting initial positions of the cutting tools is formed between holes in the rivets and the cutting tools; a high-temperature-resistant elastic cushion block is arranged between the cutting tools arranged between the limiting piece and the bottom of the groove and the groove. The coring bit suitable for soft-hard drilling objects is high in adaptability, and hard and soft rocks can be simultaneously crushed without replacing the bit; smooth powder discharge is realized, the cutting heat and friction heat are dissipated out of the hole bottom through drilling cuttings, and the heat dissipation is reduced; in order to improve the cutting efficiency, the cutting blade can have multiple cutting angles by adjusting the size of a rubber cushion block.

The invention provides a method for the normal pressure continuous desulfurization of rubber, which comprises the steps of: crushing rubber, then adding softening agent and activating agent into the crushed rubber power, evenly mixing the agents with the rubber powder, and desulfurizing the evenly mixed material, wherein the desulfurization comprises the following step that: the material is continuously fed, via a fluidized bed, into a desulfurization pipeline which is equidistantly divided into five sections with each being externally heated, temperature of the five sections of the pipeline is the same, but temperature difference between the sections of the pipeline is present, the heating temperature of the sections of the pipeline in descending order is from 280 DEG C to 240 DEG C in the flowing direction of the material, the interior of the desulfurization pipeline is at normal pressure, the length of each section of the desulfurization pipeline is from 14 to 17 meters, and the flowing time of the material in the entire desulfurization pipeline is from 15 to 20 minutes. The method for the normal pressure continuous desulfurization of rubber according to the invention has the advantages of: good safety, environmental protection, energy saving, stable product performance and high efficiency.

The invention discloses a piezoelectric ceramic driving device. The piezoelectric ceramics driving device comprises a low voltage amplification circuit and four reverse high voltage operation amplification circuits. The output of the low voltage amplification circuit is connected to input terminals of a first reverse high voltage amplification circuit and a second reverse high voltage amplification circuit. The output terminals of the first reverse high voltage amplification circuit and the second reverse high voltage amplification circuit are connected to a positive electrode of the piezoelectric ceramic input terminals of a third reverse high voltage amplification circuit and a fourth high voltage amplification circuit. The output terminals of the third reverse high voltage amplification circuit and the fourth reverse high voltage amplification circuit are connected to the negative electrode of the piezoelectric ceramic. An input signal flows out through amplification by the low voltage amplification circuit and is inputted into the first reverse high voltage amplification circuit and the second reverse high voltage amplification circuit to go through reverse high voltage amplification and then is inputted into the positive electrode of the piezoelectric ceramic and the input terminals of the third reverse high voltage amplification circuit and the fourth reverse high voltage amplification circuit to go through reverse high voltage amplification and then the input signal is inputted into the negative electrode of the piezoelectric ceramic. As a result, amplified signals which are amplified for hundreds of times are formed on two sides of the piezoelectric ceramics. The piezoelectric ceramics driving device and driving method adopt multiple high voltage operation amplifiers which are connected in parallel to perform output in order to improve output current and reduce the amount of heat generated by each high voltage operation amplifier.

The invention relates to the technology of semiconductors, in particular to a PSOI transverse high-voltage power semiconductor device. The transverse high-voltage MOSFET is characterized in that a second conductive type semiconductor buried layer is introduced below a source end, current carries are prevented from being too concentrated at the source end, power consumption of the device at the source end is reduced, and therefore natural heat effect of the device is improved; even doping is adopted in a first drift region of a second conductive type semiconductor, doping relatively high in concentration is adopted in a second drift region of the second conductive type semiconductor, electrical resistivity of the drift regions can be reduced, specific on-resistance of the device is reduced, and therefore power consumption of the device is reduced, and temperature of the device is lowered. The PSOI transverse high-voltage power semiconductor device has the advantages of being good in self-heating effect, low in on-resistance, high in voltage resistance, small in domain area and the like, and technological difficulty and cost are reduced.

The invention relates to an astigmatic deformable mirror device, which belongs to the field of system aberration compensation of an optical system and aims to solve the problems of difficulty in processing and manufacturing and large displacement of an introduced rigid body in the prior art. The astigmatic deformable mirror device comprises an optical element, a deformable mirror frame, four actuators, four displacement sensors, an upper fixed plate and a lower fixed plate, wherein the optical element and the deformable mirror frame are connected into a mirror frame assembly in a gluing or compressing mode; the upper fixed plate and the lower fixed plate are fixed on the deformable mirror frame respectively by screws; two actuators which are circumferentially distributed in 180 degrees are arranged on the upper fixed plate, the other two actuators which are circumferentially distributed in 180 degrees are arranged on the lower fixed plate, the four actuators on the upper fixed plate and the lower fixed plate are circumferentially distributed in 90 degrees, the actuators are arranged along the direction of an optical axis of the optical element, and input displacements vertically act on the deformable mirror frame; and the four displacement sensors are respectively arranged on the upper fixed plate and the lower fixed plate and are opposite to the four actuators.

The invention discloses a four-leaf aberration deformation mirror device which belongs to the field of system aberration compensation of optical systems and aims at solving the problems that the mounting and the detection are difficult to perform and the moving rigid body displacement is large in the prior art. The device comprises an optical element, a deformable mirror frame, eight actuators, eight displacement sensors, an upper fixed plate and a lower fixed plate, wherein the optical element and the deformable mirror frame are connected to form a mirror frame component in an adhesion or compression mode; the upper fixed plate and the lower fixed plate are respectively fixed on the deformable mirror frame through screws; four actuators which are distributed at an angle of 90 degrees in the circumferential direction are arranged on the upper fixed plate; four actuators which are distributed at an angle of 90 degrees in the circumferential direction are arranged on the lower fixed plate; the eight actuators on the upper fixed plate and the lower fixed plate are distributed at an angle of 45 degrees; the actuators are arranged along the optical axis of the optical element; input displacement vertically acts on the deformable mirror frame; the eight displacement sensors are respectively arranged on the upper fixed plate and the lower fixed plate and are opposite to the eight actuators.

This invention relates to rapid update electron parts probe card, which comprises one circuit board, multiple probes and several container sockets, wherein, the circuit board is set with electron circuit connected to the passive elements joints; detect probes is connected to electrical circuit; probe card is to test by detector; each container socket is set with two conductive fix parts on the points to form one container part and at least on open; the container parts are to contain above passive element to connect two fix parts through open to transfer each passive element.

The invention provides an anti-backflow protection circuit, which is electrically connected between an input circuit and an output circuit. The anti-backflow protection circuit includes: a reference voltage supply circuit, a voltage comparison circuit and an anti-backflow circuit. The voltage comparison circuit includes a current sense resistor. The output terminal of the reference voltage supply circuit is connected to the first input terminal of the voltage comparison circuit, the negative terminal of the input circuit is connected to the negative terminal of the output circuit through the current detection resistor, and the feedback voltage formed on the current detection resistor acts on the second input terminal of the voltage comparison circuit. The anti-backflow circuit includes a P-channel MOSFET. The voltage comparison circuit compares the reference voltage and the feedback voltage, and controls the working state of the P-channel MOSFET through the output end of the voltage comparison circuit to prevent the back-feed current from entering the input circuit from the output circuit. The technical problem of large power consumption and large heat dissipation when the diode is used to realize anti-backflow in the prior art is solved.

The invention provides a novel direct current series excited motor control system and method. The novel direct current series excited motor control system includes a DC power supply UDC, and includesa first branch circuit and a second branch circuit which are connected to the DC power supply UDC in series, wherein the first branch circuit includes a third branch circuit and a fourth branch circuit which are connected in parallel; the third branch circuit includes a first IGBT module and a second IGBT module which are connected in series; and the fourth branch circuit includes a third IGBT module and a fourth IGBT module which are connected in series. The novel direct current series excited motor control system can realize contactless smooth commutation of a direct current series excited motor through an electric power electronic device, can integrate commutation with motor modulation, can reduce the cost and heat dissipation of the system, and can improve the system efficiency.

The present invention discloses a Doherty power amplifier control method and apparatus, wherein the method comprise: obtaining an output state of a Doherty power amplifier, wherein the Doherty power amplifier comprises a carrier power amplifier and a peak value power amplifier; and adjusting a grid voltage of the carrier power amplifier according to the output state of the Doherty power amplifier, so that the carrier power amplifier switches from a B-type working state to an AB-type working state in a process in which output power of the Doherty power amplifier decreases from a saturation state to power corresponding to a regression amount of the Doherty power amplifier. According to the Doherty power amplifier control method and apparatus, the grid voltage of the carrier power amplifier is adjusted according to the output state of the Doherty power amplifier, to change a working state of the carrier power amplifier, thereby improving efficiency of the Doherty power amplifier and ensuring linearity of the Doherty power amplifier.

The invention discloses a single-line carrier photodetector and a manufacturing method thereof. The photodetector includes a substrate, an epitaxial layer and an electrode, and the epitaxial layer includes an assembly layer, a cliff layer, a conduction layer, and an absorption layer stacked in sequence. and a blocking layer, the absorbing layer adopts graded doped InGaAs, the blocking layer adopts AlxIn1-xAs, 0<x<1. The present invention adopts AlxIn1-xAs material as the barrier layer and the assembly layer; the conduction layer InGaAlAs with graded composition is used to smooth the band gap between InGaAs and InAlAs, realize lattice matching, reduce the dislocation density at the heterogeneous interface and prevent electrons from The aggregation of heterogeneous interfaces accelerates the drift speed of electrons. At the same time, the doping concentration of the assembly layer presents a gradient change. On the one hand, it can effectively weaken the space charge effect, reduce the thermal power consumption of the device, and increase the saturation output current of the device; on the other hand, it can effectively weaken the speed overshoot effect and obtain a small voltage. Depends on bandwidth and better linear response.

This invention relates to one plane light wave heat conductive part micro heating device, which comprises light transmission channel, two contact point connected to outer power to connect light transmission channel through connection arm, wherein, the light transmission channel is of rip light wave guide orderly depositing isolation layer, chip layer, upper pack layer and heat electrode film on underlay; two contact points and connection arm has same layer structure in height direction. The process method comprises steps of etching to form light transmission channel, connection arm and contact point; then using etch method to form micro heating device.