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3966 results about "Oil supply" patented technology

The ability to supply oil for world demand affects the ultimate price of the product. The world's supply of oil centers around the capacity of reserves. Reflected as the available supply, oil reserves are most often expressed in terms of "proven reserves.".

Speed reducer lubrication discharge pipe structure

The invention discloses a speed reducer lubrication discharge pipe structure. The speed reducer lubrication discharge pipe structure comprises a speed reducer box; an oil outlet pipe is arranged at the lower part of one side of the speed reducer box; a main distributor is arranged under multiple speed reducer gears and multiple bearing cavities in the speed reducer box; multiple oil outlets are formed in the main distributor; the oil outlets of the main distributor are connected with oil supply branch pipes; multiple secondary distributors are transversely arranged above the engaged places ofeach pair of speed reducer gears; the secondary distributors near an oil inlet pipe communicate with the oil inlet pipe through oil pipes; and the secondary distributors far from the oil inlet pipe are connected with first clamping joints. The oil supply branch pipes positioned in the bearing cavities of a speed reducer fully lubricate bearings of the speed reducer through a point-to-point arrangement form; the oil supply branch pipes in the engaged places of gears of the speed reducer lubricate the gears of the speed reducer; damping holes in the secondary distributors reduce the pressure ofredundant lubricating oil pumped by a lubricating pump; and during reducing of the pressure, the gears of the speed reducer are lubricated again, so that the lubricating effect of the bearings and thegears of the speed reducer is excellent, and the service life of a lubricating pump is long.
Owner:WORLD TRANSMISSION TECH TIANJIN SHARE LTD

Method for controlling the oil supply of an automatic planetary transmission

The invention relates to a method for controlling the oil supply device of an automatic planetary transmission, comprising a main oil pump (HP), which is mechanically drivably connected to the drive shaft of an internal combustion engine (VM), and an auxiliary oil pump (ZP) that may be driven via a controllable electric motor, the automatic transmission (ATG) being part of a parallel hybrid powertrain of a motor vehicle having an input shaft (5), which may be connected via a separating clutch (K) to the drive shaft (2) of the internal combustion engine (VM) and is permanently drivably connected to the rotor (4) of an electric machine (EM).
In order to achieve an oil supply to the automatic transmission (ATG) as and when needed, it is provided that the current oil requirement (PHD<sub2>—</sub2>soll) of the automatic transmission is determined as a function of at least one currently captured operating parameter, and that the delivery rate (PZP) of the auxiliary oil pump (ZP) is set, by a correspondingly actuation of the associated electric motor, in the combustion and combined driving mode below a minimum input speed of the main oil pump (HP) and in the electric driving mode to at least the total oil requirement, and at least in the combined driving mode above the minimum input speed of the main oil pump (HP) is set to at least the residual oil requirement exceeding the delivery rate (PHP) of the main oil pump.
Owner:ZF FRIEDRICHSHAFEN AG

Main combustible stage tangential oil supply premix and pre-evaporation combustion chamber

The invention relates to a main combustion stage tangential oil supply premix and pre-evaporation combustion chamber. The combustion chamber is in a single-ring chamber structure and is designed by adopting the conceptual design of staging combustion, and all the used amount of gas for combustion is supplied by the precombustion stage and the main combustion stage. The combustion chamber mainly comprises a flow-dividing type diffuser, a combustion chamber outer case, a combustion chamber inner case, a fuel nozzle, the precombustion stage, the main combustion stage, a flame tube outer wall and a flame tube inner wall. The precombustion stage utilizes a low-speed flow returning zone generated by swirl air entering the combustion chamber by a precombustion stage swirler component; the fuel needed by the main combustion stage is ejected by the tangential main combustion stage nozzle, is atomized under the air flow effect generated by entering of atomized air of the main combustion stage nozzle into a pipe, then flows into a premix and pre-evaporation ring pipe for evaporation, and is further blended with air; and even oil-gas mixed gas formed at the outlet of the premix and pre-evaporation ring pipe enters a flame tube and combusts under the pilot combustion of the precombustion stage flame. The combustion chamber has simple structure, and can effectively reduce the discharge of pollution simultaneously while guaranteeing that an aeroengine is in normal working state.
Owner:BEIHANG UNIV

Quantitive type experimental device for dynamic and static performances of static-pressure rotary table

The invention provides a quantitive type experimental device for dynamic and static performances of a static-pressure rotary table, and belongs to the field of machinery design and manufacture. According to the experimental device, a loading device (5) and a loading arm (6) are used for changing magnitude of loads or changing oil supply pressure to control the distance between a static-pressure oil cushion (10) and a rotary table disc chuck (7), a pressure sensor (12) is used for measuring pressure in an oil cavity, an eddy current displacement sensor (11) is used for measuring the thickness of an oil film, a thermocouple temperature sensor (3) is used for measuring oil temperature, a force sensor (4) is used for obtaining magnitude of loading force, a pressure gauge a (15) on a multi-head pump at an oil inlet in the oil cavity is used for measuring pressure of the oil inlet of the oil cavity, and a pressure gauge b (16) arranged between an oil pump and the multi-head pump is used for measuring the oil supply pressure of the static-pressure rotary table. By means of the experimental device, a test of the dynamic and static performances of the static-pressure rotary table is carried out under the condition that temperature is between minus 10 DEG C and 60 DEG C and pressure is not more than 100 MPa, and the experimental device provides guarantee for solving problems in engineering, optimizing structural parameters of the rotary table, and improving machining precision of the rotary table.
Owner:BEIJING UNIV OF TECH

Energy-saving shield segment assembling and positioning electro-hydraulic control system adopting load-sensitive technology

InactiveCN103032396APrecise control of assembly positioningImprove construction qualityUnderground chambersServomotorsControl signalSystem pressure
The invention discloses an energy-saving shield segment assembling and positioning electro-hydraulic control system adopting a load-sensitive technology. The system comprises a motor, a variable pump, a two-position three-way proportional reversing valve, a variable cylinder, an overflow valve, a pressure reducing valve, a pressure compensating valve, a one-way valve, a multi-way valve, a balancing valve, a hydraulic lock, a hydraulic motor, a hydraulic cylinder, a moment rotation speed sensor, a displacement sensor and a pressure sensor. The multi-way valve with the pressure compensating valve in a segment assembling system is used for controlling the rotation speed of the hydraulic motor for driving the segment assembling machine to rotate and the moving speed of each hydraulic cylinder. The pressure sensor is used for detecting the pressure of a main oil passage of the system and the working pressure of each executer in real time; and a computer control unit is used for determining a variable pump control signal according to a system pressure signal, so that the displacement of the variable pump is changed with the load change so as to achieve load sensitive control. According to the invention, energy waste caused by continuous oil supply at the highest working pressure of the traditional system is avoided, the throttling loss and overflow loss are greatly reduced, and an obvious energy saving effect is obtained.
Owner:ZHEJIANG UNIV

Large and middle wind turbine digital intelligent hydraulic brake system

The invention discloses a digital, intelligent and hydraulic brake system of large and medium wind machine. The output end of the oil supply system links uniflow valve. Its output end joints to the first accumulator, pressure relay and input end of first plug-in valve through the first throttle valve. The output end of first plug-in valve links the second accumulator. Equip hydraulic cylinders with brake blocks on sucker-rod cavity end, two of which are taken as one group and are located relatively. The sucker-rod cavities of the hydraulic cylinders connect with the output ends of the first and second plug-in valve and the third linking switch valve through the bus. The output end of the second plug-in valve meets oil tank through second throttle valve. Two high-speed switch valves are taken as pilot stage together with two plug-in valves to form digital electro-hydraulic proportional valve. Brake blocks are equipped on both sides of brake chuck of the wind machine to change the open-close time ratio of high-speed switch valves and adjusts hydraulic braking force of the brake chuck. When meeting the working condition of unit braking, adjust the duty ratio of high-speed switch valves in unit time depending on wind speed and main shaft speed to realize intelligent control on braking force.
Owner:ZHEJIANG UNIV

Energy-recovery hydraulic system and engineering machinery

The invention provides an energy-recovery hydraulic system, comprising a hydraulic motor, a first electromagnetic valve, a second electromagnetic valve, a first reversing valve, a hydraulic control valve, a plurality of energy accumulators, a hydraulic pump, a first one-way valve, a second one-way valve and a controller, wherein a first oil port and a second oil port of the hydraulic motor are respectively connected to the plurality of energy accumulators through the hydraulic control valve, and during braking, pressure oil supplied by the hydraulic motor is injected into the plurality of energy accumulators through the hydraulic valve. According to the energy-recovery hydraulic system, the plurality of energy accumulators are adopted for gradual energy storage, so that high energy recovery rate and wide recovery range are achieved; when recovered energy is low, the energy can also be utilized fully; in an energy release process, when the pressure in each energy accumulator is lower than a certain value, residual oil is taken as incoming oil of the hydraulic pump, so that the problem that the energy is more difficult to utilize when the pressure of the energy accumulators is lower is solved; and the energy-recovery hydraulic system is simple and convenient to implement and low in cost. The invention further provides engineering machinery consisting of the energy-recovery hydraulic system.
Owner:昆山三一动力有限公司

High-altitude and low-pressure characteristic simulation test station of air compressor in internal-combustion engine

The invention discloses a high-altitude and low-pressure characteristic simulation test station of an air compressor in an internal-combustion engine, relating to a characteristic simulation test station of an air compressor in an internal-combustion engine, and comprising an air pipeline system and a lubricating system, wherein the air pipeline system comprises a vacuum pump, a pressure stabilizing box, and an air filter, a flow testing section, an air inlet parameter testing section, a flow stabilizing section and an air compressor sequentially connected with an outlet of the pressure stabilizing box, and an air exhaust parameter testing section, a back pressure regulating valve, a stopping valve and an air exhaust intercooler sequentially connected with an outlet of the air compressor;the lubricating system comprises an oil tank, an oil supplying system and a lubricant intercooler; an outlet of the air exhaust intercooler is connected with the pressure stabilizing box so that an air pipeline of the test station forms a sealed air circulation system; and the oil tank is arranged inside the pressure stabilizing box so as to improve the sealing property of the test station. The test station can simulate the environmental pressure at the altitude of 0-30,000 meters and performs the high-altitude simulation characteristic test of the air compressor in the turbo-charged internal-combustion engine, therefore, the sealing property and simulated altitude of the test station are higher than those of the existing simulation test station of the same type.
Owner:TSINGHUA UNIV
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