3966 results about "Oil supply" patented technology

An oil supply device for an engine includes a first oil suction passage, a second oil suction passage, a first pump for sucking and discharging oil from the first oil suction passage, a second pump arranged in series with the first pump, the second pump for sucking and discharging oil from at least one of the first pump and the second oil suction passage, a check valve for blocking oil circulation, a first oil passage, a second oil passage, a third oil passage for establishing communication between the first oil passage and the second oil passage, and a supply volume control device for varying oil supply volume to a lubrication system portion, to a cooling system portion, or to the lubrication system portion and the cooling system portion in accordance with a change in at least one of an engine oil temperature, an engine rotation speed, and an engine load.

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.

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 (P_{HD<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 (P_ZP) 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 (P_HP) of the main oil pump.

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.

A vehicle drive device configured with reduced axial dimensions, while still having appropriate lubrication. The vehicle drive device is configured with an input shaft coupled to an engine, a rotary electric machine, and an output shaft coupled to wheels. A power transfer mechanism couples input shaft, the rotary electric machine, and the output shaft. A case houses at least the rotary electric machine and the power transfer mechanism. An oil reserving portion capable of reserving oil supplied by rotation of the power transfer mechanism is provided above the rotor shaft inside the case. A communication oil passage is oriented between the oil reserving portion and an inner circumferential space formed inside the rotor shaft. The rotor shaft is disposed to be inserted into the inside housing space, and has a supply communication hole that communicates between the inner circumferential space and the inside housing space.

A planetary carrier includes a journal bearing for supporting a planetary gear. The journal bearing receives lubricant to produce a lubricant film to support gear loads. A torque frame is attached to the carrier housing to transmit torque and to prevent twisting of the carrier housing. The torque frame includes several lubricant communication passages to provide lubricant to each of the separate journal bearings. Each of the lubricant communication passages includes an accumulator for storing lubricant during normal operation. The accumulator stores a desired amount of lubricant to provide lubricant to the adjacent journal bearing for the interim period between primary system stoppage and reestablishment of lubricant flow by a secondary system.

An oil supply system for a vehicle includes: a mechanical oil pump driven by an engine; an electric oil pump driven by an electric motor; a hydraulic pressure control circuit supplied with oil from the mechanical oil pump and the electric oil pump through an oil discharge passage for the mechanical oil pump and an oil discharge passage for the electric oil pump, which are connected to each other; a lubrication/cooling oil passage that is supplied with the oil from the hydraulic pressure control circuit; and a communication passage that provides communication between the lubrication/cooling oil passage and the mechanical oil pump. With this oil supply system, it is possible to prevent the electric oil pump from causing air-sucking noise, for example, in the motor-power cruise mode, and to improve the rising characteristics of the hydraulic pressure produced by the mechanical oil pump during startup of the engine.

A closed electro-hydraulic control system comprised a differential hydraulic cylinder, two safety valves, a small path fluid one-way valve, a displacement transducer, a subtractor, two controllers, a hydraulic pump, a prime motor, a low-pressure oil-supply system and a rotational speed governor. The hydraulic pump has three oil ports connected with a rod-free cavity, a rod cavity of the differential hydraulic cylinder and the low-pressure oil-supply system separately.

The hydraulic power source with low idling energy consumption belongs to the field of fluid transmission and control technology, and is one oil supply device designed to lower the energy consumption in the non-work period and partial load work condition of hydraulic system. The present invention consists of hydraulic pump, motor, motor rotation speed controller, energy accumulator, solenoid valve, pressure sensor, displacement sensor, controller, pipeline, executor controlling proportion valve, direction valves and other parts. The present invention features that the hydraulic pump is one constant pressure variable capacity pump with displacement sensor for detecting the displacement of the pump, altering the rotation speed of the pump can reach the composite functions of making the power source possess constant pressure, constant flow and constant power, and lowering the rotation speed in the non-work period and partial load work condition of hydraulic pump can lower the power consumption of the system.

The grade of oil used in a machine or apparatus can be determined by determining a temperature and pressure within an oil supply and determining the oil grade in response to determining the temperature and pressure.

A drive device for a vehicle configured between an internal combustion engine and a wheel. The drive device includes a rotary electric machine, and an engagement device connecting the drive device to the engine by a fluid coupling using hydraulic pressure. A case houses at least a portion of the drive device and includes a support wall extending radially, and a cylindrical projecting portion projecting from the support wall toward a side in an axial second direction that is in a direction opposite to the axial first direction. The engagement device includes an operating oil pressure chamber supplied with the hydraulic pressure. A rotor member of the rotary electric machine is radially supported by the cylindrical projecting portion in a rotatable state via a support bearing. The cylindrical projecting portion is formed with an operating oil supply passage supplying oil to the operating oil pressure chamber.

A cylinder head cooling structure and an oil temperature control system are provided for an internal combustion engine having a plurality of cylinders, each having a plurality of intake ports and a plurality of exhaust ports. The engine includes cooling oil jackets surrounding the spark plugs in the cylinder head, a thermostat attached to the front surface of the crankcase independently of an oil filter, and an oil temperature sensor disposed on a rear face of the cylinder block above the crankcase in an oil supply path formed on the cylinder rear face for supplying oil to the oil jackets. Oil passages conducting oil into the oil jacket are provided between two separate parts of a bifucated intake port and between two separate parts of a bifurcated exhaust port, and only cooling system oil reaching high temperatures is allowed to flow through the thermostat, thereby improving temperature control response.

A hydraulic control apparatus for a working machine in which a flow rate and a direction of pressure oil discharged from a hydraulic pump are controlled by a control valve to supply it to a swing motor, comprising: a bleed-off oil path for bleeding off a part of the pressure oil supplied to the swing motor, a cut valve provided on the bleed-off oil path to adjust a bleed-off amount, a controller for controlling the cut valve through a solenoid proportional valve, and pressure sensors for detecting an operating amount of a remote control valve for swing, characterized in that the controller sets the bleed-off amount according to the operating amount detected by the pressure sensors, controls an opening area of the cut valve on the basis of the bleed-off amount set, and suppresses the shock when sudden swinging operation takes place.

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.

The invention discloses an aeroengine fuel system altitude performance testing unit and a test method thereof. The testing unit comprises an equipment cabinet, a control computer, a display instrument, a high altitude box, a fuel tank, an oil pipeline, a vacuum pump package and various valves, wherein, the inner part of the high altitude box is provided with a testing oil fuel pump which is connected with the fuel tank through the oil pipeline inside the equipment cabinet, the fuel tank has a structure with low temperature resistance and atmospheric depression resistance, can simulate the high altitude working environment of the fuel system of the aeroengine. The test method utilizes the fuel tank capable of simulating the atmospheric depression and the low temperature of the high altitude and a high altitude box capable of simulating the atmospheric depression, adopts the pipeline and the valves to adjust the oil inlet pressure and the oil return pressure, and uses a flowmeter, a thermometer and a pressure gauge to read the parameter values. The test of altitude simulations of an oil supply system of an electronic oil fuel pump of an aircraft piston engine can be performed by the method.

The present invention relates to a system and method for providing pressurised oil during non-feathered in-flight shutdown conditions in a variable-pitch aircraft propeller engine. A secondary pumping means provides pressurised oil substantially independent of an engine main oil circuit.

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.

A chain tensioner includes a housing defining a cylinder chamber. A plunger is mounted in the cylinder chamber so as to be slidable along an inner surface of the cylinder chamber. A return spring is mounted in the cylinder chamber to bias the plunger outwardly. The housing is formed with an oil supply passage communicating with a pressure chamber defined in the housing behind the plunger. A check valve is disposed at an oil exit of the oil supply passage and configured to close the oil supply passage when the pressure in the pressure chamber is higher than the pressure in the oil supply passage. The housing is formed with a threaded hole extending from an upper portion of an outer periphery of the housing to the pressure chamber. A screw has its external thread in threaded engagement with the internal thread of the threaded hole, whereby a gap, as an air bleed passage, is defined between the internal and external threads. The internal thread of the threaded hole has an internal diameter larger than an internal diameter of an internal thread under JIS.

An oil lubricating structure includes a main body case having a housing chamber in which an element requiring a supply of oil is housed, an oil reservoir which is provided below the main body case and has an oil chamber in which oil collects, an oil supply portion which has an inlet port through which oil is drawn in from the oil chamber and which supplies oil collected in the oil chamber to the element requiring a supply of oil through the inlet port, and a duct member provided in the oil chamber. An oil return hole is provided which is formed in a bottom surface of the main body case toward the front of the oil reservoir and through which oil returns to the oil reservoir from the main body case. One end portion of the duct member is connected to the oil return hole and the other end portion of the duct member is positioned farther to the rear than the inlet port.

An oil supply system for a gas turbine engine with a centrifugal air/oil separator in fluid communication with the scavenge system to receive the used oil mixture and extract oil and air therefrom, a supply pump in serial connection with the main oil outlet of the separator and in fluid communication with the bearing cavities to deliver the oil thereto, an oil tank in fluid communication with the overflow oil outlet of the separator, and at least one make-up pump having an inlet in fluid communication with the tank and having an outlet in fluid communication with the scavenge system.

A sliding material including a resinous porous article having an interconnected hole porosity of not less than 30% and a lubricating oil which impregnates the resinous porous article is disclosed. The resinous porous article has an interconnected hole formed by molding a resin mixed with a pore-forming substance into said resin, and extracting said pore-forming substance from said molded article with a solvent which dissolves said pore-forming substance and does not dissolve said resin. A sliding bearing composed of a sliding material having a sliding surface which slides on a mating member and a lubricating oil supply layer which supports the sliding material and supplies the sliding surface with the lubricating oil.

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.

An automotive engine oil pump assembly having first and second pump mechanisms contained within a common housing. A shaft rotatably supported in the housing drives the pump mechanisms in a conventional manner. The pump mechanisms are offset in phase to reduce flow pulsations through the housing and limit pump noise and vibration. The first pump mechanism communicates with a common inlet and first outlet of the housing. The second pump mechanism communicates with the common inlet and second outlet of the housing. A common reservoir connected to inlets of the first and second oil pump mechanisms provides a supplemental oil source to balance oil pressures at the pump inlets to prevent pump cavitation and further reduce pump noise and vibration.

An output shaft bearing portion which is provided in an extension housing to be attached to an outside of an end wall portion of a casing main body of a transmission casing is lubricated by lubrication oil which is supplied to lubricating portions inside the casing main body. In the end wall portion there is formed an oil guide passage which guides the lubrication oil supplied to the lubricating portions inside the casing main body. Inside the extension housing, there is formed a rib which guides the lubrication oil flown from the oil guide passage, into a position in which the lubrication oil can be scraped by a gear wheel provided inside the extension housing. The lubrication oil scraped by the gear wheel is supplied to the output shaft bearing portion.

A CO2 compressor is disclosed for forcing and moving a lubricant under discharge pressure. If the oil path is reduced in size or a pressure reducing part is inserted to handle the large differential pressure caused between the discharge pressure and the intake pressure, the oil path would become liable to be easily clogged by foreign matter. In view of this, an intermittent oil supply mechanism is formed in the oil path using the sliding contact portion between a fixed member of the compressor body and a movable member. Thus, the substantial lubrication time period is shortened and the amount of oil supplied is limited.

An engine brake unit, may include a rocker shaft having an oil passage to open or close an exhaust valve when an engine braking is in operation, an exhaust rocker arm rotatable about the rocker shaft inserted into the exhaust rocker arm, wherein the exhaust rocker arm includes a supply oil passage communicating with the oil passage and the outside, and a recess connected to the supply oil passage and having an open lower portion, an actuator disposed in the recess of the exhaust rocker arm, wherein the actuator includes a piston that selectively moves downwards through the open lower portion of the recess by oil supplied from the supply oil passage to press the exhaust rocker arm while oil pressure in the oil passage has a predetermined pressure or more, and an oil control valve connected to the oil passage of the rocker shaft and controlling the oil pressure.

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.

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.

The invention provides a pipeline clamping tool and a pipeline lifting method. the pipeline clamping tool comprises a pedestal, a clamping part of the clamping pipeline which is hinged on the pedestal by a hinge shaft; a first hydraulic cylinder which drives the rotation of the clamping part and is arranged on the pedestal and is connected to the clamping part; and a locking part which is used for locking the clamping part and is arranged on the pedestal in a movable mode. The invention also provides a pipeline lifting method, the pipeline lifting method comprises the following steps: driving the rotation of the clamping part by the first hydraulic cylinder and clamping the pipeline, then driving the locking part, preventing the rotation of the clamping part, and then lifting the pipeline and stopping the oil supply on the first hydraulic cylinder during the lifting process.

An oil supply system for a reciprocating piston internal combustion engine is disclosed in which the supply of oil to piston cooling jets is controlled by pressure operated valves designed to open at a pre-defined valve opening pressure. The pressure of oil supplied by a pump is controlled to be below this pre-defined valve opening pressure during operation of the engine in which piston cooling is not required, and the pressure of oil is controlled to above the pre-defined valve opening pressure when piston cooling is required. The control of the pump is by an electronic control unit based upon a combination of engine speed and engine load.