Abstract: A plain bearing includes a base body having a substantially cylindrical bore bounded by a bore surface, and the bore surface has a longitudinal recess in a load-zone region that is open radially inward and has curved ends connected by axially extending sides. A cylindrical shaft extends through the bore and over the load zone and has an outer diameter less than an inner diameter of the bore. A fluid channel has an opening in the recess and provides fluid to the recess at a pressure that is maintained at a level to offset no more than about 40 percent of a force produced by the shaft in the direction of the load zone.

Abstract: Methods and systems are provided for an oil supply unit with a collecting vessel for collecting oil. In one example, a method may include maintaining a pressure of the collecting vessel during an engine off, wherein maintaining the pressure may further include maintain a temperature of the oil in the collecting vessel.

Abstract: In order to improve an expansion system for a working medium that is used in particular in a circulating process of a system that utilises waste heat, in particular in a system operating in a Rankine cycle, comprising an expansion device coupled to an electricity generator, for the working medium, an inlet for supplying the pressurised working medium, and an outlet for the working medium that has been expanded by the expansion device, it is proposed that an aerosol generator unit that generates a lubricant aerosol should be associated with the inlet, wherein the working medium guided to the expansion device flows through this aerosol generator unit, which has a flow guide for the working medium having a concentration section that concentrates lubricant entrained in the total mass flow of working medium supplied to the expansion device to give aerosol particles, and these aerosol particles leave the concentration section together with a partial mass flow of the working medium, branching off from the total mass

Abstract: A system for a turbine engine includes a turbine engine component, a lubricant collection device and a plurality of lubricant circuits. The lubricant collection device is fluidly coupled with the turbine engine component. The lubricant circuits are fluidly coupled between the lubricant collection device and the turbine engine component. The lubricant circuits include a first circuit and a second circuit configured in parallel with the first circuit. Each of the lubricant circuits includes a lubricant pump. The first and the second circuits receive lubricant from the lubricant collection device, and direct the received lubricant to the turbine engine component.

Abstract: Provided is a lubricant feed mechanism for a turbocharger, the mechanism that can reduce work of an oil pump while preventing an excessive supply of lubricant to a bearing part. The lubricant feed mechanism for a turbocharger, the mechanism of feeding lubricant to a bearing part that rotatably supports a shaft connecting a compressor wheel and a turbine wheel, includes: an oil supply passage that guides the lubricant fed under pressure from the oil pump to the bearing part; and a flow control valve provided to the oil supply passage for adjusting the amount of the lubricant by throttling the flow passage of the lubricant based on a pressure of the lubricant flowing through the oil supply passage.

Abstract: A gear unit includes shafts for connecting to an external mechanical system, at least one gear stage between the shafts, a lubrication pump for circulating lubricating oil through the at least one gear stage and bearings of the gear unit, a temperature sensor for measuring temperature of the lubricating oil and supplying a temperature signal, an electrical motor for driving the lubrication pump, and an electrical device for controlling the electrical motor so that torque directed to the lubrication pump is below a torque limit. The torque limit is determined dynamically on the basis of the measured temperature of the lubricating oil. This arrangement makes it possible to protect the lubrication pump against mechanical faults during a cold start process so that an unnecessarily strict torque limitation, which would slow down the cold start process, can be avoided.

Abstract: A lubricating oil filter assembly is provided for an internal combustion engine that includes, but is not limited to a body provided with: an oil inlet, an oil outlet, a conduit connecting the oil inlet to the oil outlet, and a chamber suitable for accommodating a filter element, the chamber being in communication with the oil inlet and with the oil outlet. The lubricating oil filter assembly further includes, but is not limited to a valve assembly arranged within the conduit to enable a flow of lubricating oil in dependence of the pressure of the lubricating oil at the oil inlet.

Abstract: A turbocharger for an internal combustion engine includes an oil-lubricated bearing, a feed line for the oil and a throughflow limiter for the oil.

Abstract: A transmission system includes a housing having a sump, the housing containing a crown wheel and a pinion. The transmission system further includes an oil reservoir and a pump selectively operable to pump fluid from the oil reservoir to the sump for lubricating the crown wheel. The pump is selectively operable to pump fluid from the sump to the reservoir.

Abstract: A torque transmission mechanism for an internal combustion engine, adapted to transmit a starting torque from a starter motor to a crankshaft of the internal combustion engine. A ring gear of the mechanism transmits the starting torque, and a one-way clutch (including an inner ring and an outer ring) disposed between the ring gear and the crankshaft. The ring gear comprises lubrication holes allowing lubricant to transfer from the internal combustion engine towards the one-way clutch. The torque transmission mechanism comprising at least one sealing element adapted to prevent lubricant from passing between an outer surface of the one-way clutch outer ring and a ring gear inner surface. The one-way clutch outer ring comprises a chamfered surface inclined with respect to a central axis of the mechanism and diverging respective to the central axis of the mechanism from the lubrication holes of the ring gear towards the sealing element.

Abstract: A turbocharger for an internal combustion engine includes a shaft, a first turbine wheel, a compressor wheel, and a second turbine wheel. The shaft includes a first end and a second end and is supported for rotation about an axis. The first turbine wheel is mounted on the shaft proximate to the first end and configured to be rotated about the axis by post-combustion gasses emitted by the engine. The compressor wheel is mounted on the shaft between the first and second ends and configured to pressurize an airflow being received from the ambient for delivery to the engine. The second turbine wheel is mounted on the shaft proximate to the second end and configured to be rotated about the axis by a pressurized fluid. An internal combustion engine employing such a turbocharger is also disclosed.

Abstract: An air turbine starter includes a starter housing and a check valve. The check valve is disposed within the starter housing and is configured, in response to a pressure differential across the check valve, to selectively allow and prevent lubricant to flow therefrom. The check valve includes a valve includes a valve body, a valve seat, a valve bore, a valve element, and a plurality of rounded grooves. The valve bore is formed in the valve body between the valve seat and the lubricant outlet port. The valve element is disposed within the valve bore and is movable between a plurality of open positions and a closed position. The rounded grooves are formed in the valve body, and are disposed adjacent to, and in fluid communication with, the valve bore to improve lubricant to flow past the valve element when the valve element is in an open position.

Abstract: A powertrain assembly includes an internal combustion engine, a boost mechanism and a fluid supply mechanism. The boost mechanism is in communication with an air source and the internal combustion engine. The fluid supply mechanism includes a first accumulator in communication with a pressurized fluid supply from the internal combustion engine and the boost mechanism. The accumulator receives pressurized fluid from the internal combustion engine during engine operation and provides the pressurized fluid to the boost mechanism during an engine off condition.

Abstract: Gas turbine engines systems and methods involving oil flow management are provided. In this regard, a oil pressure analysis system for a gas turbine engine is operative to: receive information corresponding to measured oil pressure and rotational speed during a start up of the engine; correlate the information into data sets, each of the data sets containing a measured oil pressure and a corresponding rotational speed; and determine whether the oil flow valve is functioning properly based on the information contained in the data sets.

Abstract: An internal combustion engine includes a crankcase which accommodates cylinders, having at least one exhaust turbocharger and having an oil circuit containing at least one oil pump, in which engine oil is siphoned by at least one oil pump and delivered to the cylinders for lubrication, and in which the or each exhaust turbocharger is coupled to the oil circuit such that siphoned engine oil can be distributed to bearings of the respective turbocharger via an inlet line leading to the respective exhaust turbocharger and can then be expelled from the bearings of the respective exhaust turbocharger in the direction of an oil sump via an outlet line leading away from the respective exhaust turbocharger. The respective outlet line of the respective exhaust turbocharger is assigned a pressure limiting device, with the aid of which a vacuum prevailing at the bearings of the respective exhaust turbocharger can be limited.

Abstract: The lubricant-return holes are provided in the intermediate portion of the ring gear. Thus, the lubricant stagnating above the first oil sealing member can be easily discharged to the oil pan side via the lubricant-return holes even when the ring gear has stopped rotating in response to the starter motor being turned off after completion of the start of the internal combustion engine. As such, the level of the surface of lubricant stagnating between the ring gear and the outer race member does not rise, and therefore the lubricant surface virtually does not reach the outer race and the one-way clutch that are rotating while the internal combustion engine is running. Thus, bubbling of lubricant and production of sludge, which may otherwise be caused by agitation of the lubricant surface, can be prevented.

Abstract: An oil pan is provided with an oil pan separator that partitions a first chamber that communicates with a moving part inside a cylinder block and a second chamber outside the first chamber. A communicating hole is provided to a bottom panel of the oil pan separator. The communicating hole is shielded from a strainer.

Abstract: An engine having a fluid lubrication and control system is provided. The engine also includes a pump configured to maintain fluid pressure in the lubrication and control system when the engine is running. The engine additionally includes an accumulator in fluid communication with the lubrication and control system. The accumulator is configured to accumulate and retain fluid when the engine is running, and to discharge the fluid when the engine is not running in order to maintain fluid pressure in the lubrication and control system. A method for controlling oil pressure in the engine is also provided.

Abstract: The invention relates to a control device for lubrication systems, having a control processor which is arranged in a housing, having connections, which are formed on the housing, for sensor inputs and control outputs, which are connected to the control processor, and having an operator interface which is secured to the outside of the housing and is intended to input control parameters. Provision is made for the control processor to be set up with different control programs for different lubrication systems and for program switches for selecting the different control programs to be arranged inside the housing.

Abstract: A system and method are provided to selectively control lubricant supply flow to a rotating machine that is installed in an aircraft having ram air turbine that is movable between at least a deployed position and a stowed position. A controller determines at least when the ram air turbine is in the deployed position, and determining when rotational speed of the rotating machine exceeds a predetermined value. The electric motor driven lubrication pump is at least selectively energized to control the measured lubricant pressure to a predetermined minimum pressure at least when the ram air turbine is deployed and the rotational speed exceeds the predetermined value.

Abstract: A system and method are provided to selectively control lubricant supply flow to one or more rotating machines in an aircraft when the rotating machines are windmilling. A controller determines if the rotating machines are windmilling. When the rotating machines are windmilling, the controller at least selectively energizes an electric motor driven lubrication pump, to thereby supply lubricant to the windmilling turbomachine.

Abstract: An oil pan is provided with an oil pan separator that partitions a first chamber that communicates with a moving part inside a cylinder block and a second chamber outside the first chamber. A communicating hole is provided to a bottom panel of the oil pan separator. The communicating hole is shielded from a strainer.

Abstract: A drive gear includes a plurality of internal radial channels extending between the axial bore and the periphery of the gear, and an axial bore includes a lubricant distribution structure therein to provide lubrication where the teeth of the drive gear mesh with the teeth of a gear driven by the drive gear.

Abstract: The present invention is to provide a machine tool in which appropriate warm-up operation can be performed. Unnecessary warm-up operation before machining is not carried out and damage of bearings caused by the warm-up operation is prevented. A controlling unit stores data of a supply amount of lubricant to bearings and a rotation speed of a main spindle in a memory unit as time-series data. When rotation of the main spindle is started, the time-series data stored in the memory unit is used to calculate an amount of remaining lubricant in the bearings and determination of necessity of warm-up operation is made based upon the stored data. A rotation speed at a start-up time of the main spindle is controlled according to the determination result.

Abstract: 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.

Abstract: An engine having a fluid lubrication and control system is provided. The engine also includes a pump configured to maintain fluid pressure in the lubrication and control system when the engine is running. The engine additionally includes an accumulator in fluid communication with the lubrication and control system. The accumulator is configured to accumulate and retain fluid when the engine is running, and to discharge the fluid when the engine is not running in order to maintain fluid pressure in the lubrication and control system. A method for controlling oil pressure in the engine is also provided.

Abstract: The air compressor pre-lubrication system includes an oil pump, a priming tank, and a control valve. The oil pump is connected to an oil sump and includes a discharge line connected to an air compressor. The priming tank is connected to the oil pump to receive pressurized oil. The control valve is provided in an outline line connected to the priming tank and is further connected to the oil pump discharge line. The priming tank is configured to maintain a charge of oil from the oil pump and selectively release the charge of oil through actuation of the control valve. An auxiliary pre-lubrication oil pump may replace the priming tank. The pre-lubrication oil pump is connected to the oil sump and is fluidly coupled to the discharge line leading to the air compressor.

Abstract: A traveling speed reduction gear lubricating oil cooling device has a temperature sensor for detecting the temperature of lubricating oil to be installed outside a wheel mounting sleeve without running the risk of damage to a lubricating oil pump in a cold work environment. A startup operation reference speed lower than a reference speed for normal operation is set so as to ensure that air intake does not occur. A startup operation comparison device compares the speed detected by a speed sensor with the startup operation reference speed. If the detected speed is lower than the startup operation reference speed, a drive motor for the lubricating oil pump is engaged in operation at a speed lower than a normal operation speed. If the detected speed is higher than the startup operation reference speed, the drive motor for the lubricating oil pump is turned off.

Abstract: The present invention provides a traveling speed reduction gear lubricating oil cooling device that enables optimal temperature control for lubricating oil delivered via a lubricating oil pump that can be started up with a relatively small motor without running the risk of damage to an oil cooler in a cold work environment even when a temperature sensor that detects the temperature of the lubricating oil is installed outside a wheel mounting sleeve. During a startup operation, provided that the detected temperature at a traveling motor is higher than the reference temperature, the lubricating oil pump is driven at a speed in a lower speed range relative to the normal operation speed range. In addition, during the startup operation, the rotation speed of the drive motor for the lubricating oil pump is increased in correspondence to a rise in the temperature detected by a lubricating oil temperature detection sensor.

Abstract: A transmission has a lubricant pump which is arranged in the interior of a transmission housing and which includes a rotor rotationally fixedly connected to a transmission shaft in a pump housing, with the pump housing being rotationally fixedly connected to the transmission housing and being sealed with respect to a cylindrical sealing surface of the transmission housing, and with the lubricant pump pumping into a pressure chamber which surrounds the transmission shaft and which is sealed with respect to the transmission shaft. To achieve a good seal and centration of the pump housing, the pump housing is sealed by means of a resilient ring with respect to the cylindrical sealing surface of the transmission housing, with the ring being received by an outer peripheral groove of the pump housing with radial clearance so that the pump housing can adjust itself in the radial direction.

Abstract: The apparatus of the present invention provides a compact dual-pump assembly for an automotive transmission. The dual-pump assembly preferably includes a housing having a valve assembly mounted thereto. The valve assembly includes a shuttle valve disposed in fluid communication with a pressure regulating valve. An on-axis pump is mounted to the housing in fluid communication with the shuttle valve and the pressure regulating valve. An off-axis pump in fluid communication with the shuttle valve is mounted to the housing in close proximity to the on-axis pump such that the dual-pump assembly is compact.

Abstract: Gas turbine engines systems and methods involving oil flow management are provided. In this regard, a oil pressure analysis system for a gas turbine engine is operative to: receive information corresponding to measured oil pressure and rotational speed during a start up of the engine; correlate the information into data sets, each of the data sets containing a measured oil pressure and a corresponding rotational speed; and determine whether the oil flow valve is functioning properly based on the information contained in the data sets.

Abstract: A system and method are provided for controlling an electric motor driven lubrication supply pump that is supplied with electrical power from a power bus, and that supplies lubricant to a rotating machine that is at least part of a vehicle subsystem. A determination is made that the subsystem is being started-up. Moreover, one or more lubricant parameters, power bus electrical state, and one or more lubricant load states are determined. The electrical power supplied from the power bus to the electric motor is varied, based on the one or more lubricant parameters, the power bus electrical state, and the one or more lubricant load states.

Abstract: A method is disclosed for initiating oil injection into a cylinder of an internal combustion engine prior to engine start-up, the oil injection protecting the engine from damage caused by insufficient lubrication during the start-up. The method includes processing data to modulate a lubrication initiation modifier and initiating the oil injection on the basis of the lubrication initiation modifier.

Abstract: An internal combustion engine in a working device comprises an oil reservoir near a crankcase to hold oil. An oil measurement device is used to recognize the existence of oil in the oil reservoir and to produce a corresponding signal that is evaluated in an evaluation device to produce an oil level reading. The oil level reading is preferred to be produced only during the starting of the internal combustion engine or within a specific time period after starting the internal combustion engine. When the internal combustion engine has reached its operating RPM, no further oil level monitoring is performed.

Abstract: The lubricant-return holes (12d) are provided in the intermediate portion (12c) of the ring gear (12). Thus, the lubricant stagnating above the first oil sealing member (32) can be easily discharged to the oil pan (36) side via the lubricant-return holes (12d) even when the ring gear (12) has stopped rotating in response to the starter motor being turned off after completion of the start of the internal combustion engine. As such, the level of the surface of lubricant stagnating between the ring gear (12) and the outer race member (14) does not rise, and therefore the lubricant surface virtually does not reach the outer race (30) and the one-way clutch (20) that are rotating while the internal combustion engine is running. Thus, bubbling of lubricant and production of sludge, which may otherwise be caused by agitation of the lubricant surface, can be prevented.

Abstract: In one embodiment, a method is provided for performing a fluid process within a machine having a fluid system including at least two reservoirs of different types of fluids. The method includes the steps of identifying a first reservoir for use in performing a fluid process; (a) adjusting a configuration of a valve system operatively coupled to the fluid system to permit a fluid evacuation process to be performed for the reservoir, (b) subsequently performing the fluid evacuation process for the reservoir, (c) subsequently adjusting the configuration of the valve system to permit a fluid refill process to be performed for the reservoir, (d) subsequently performing the fluid refill process for the reservoir; and, subsequently identifying an additional reservoir and performing at least one of the steps (a), (b), (c) and (d) for the additional reservoir, wherein the first reservoir includes a fluid of a type which is different from a type of a fluid of the additional reservoir.

Abstract: A control device for at least one consumer of a motor vehicle, having an engine and at least one pump for supplying a medium via at least one pressure line to the at least one consumer, is configured to supply the medium to the at least one consumer before the engine is started. The pump can be driven by an electric motor or by the engine of the motor vehicle or alternatingly by the electric motor and the engine.

Abstract: A fluid transfer system includes elongated conduits connected at one end with Couplings to a plurality of fluid reservoirs of a machine or engine and at the other end with a Control valve for selective quick evacuation. Evacuation is powered by a pump operably connected to the control valve. Another embodiment includes a first pump for the evacuation of an engine oil reservoir and a second pump for the selective evacuation of transmission and hydraulic fluid reservoirs. The control valve and the pumps may be operated remotely through electrical switches on brackets or on a service panel. Associated methods of removing fluids and replacing fluids from a plurality of reservoirs includes coupling the fluid transfer system to the reservoirs.

Abstract: To be used with an internal combustion engine having a crank case wherein engine oil is contained, and an engine internal oil pressure system structured to distribute lubricating oil to moving and wearing parts of the engine from the crank case, an engine pre-lubrication system which includes an oil reservoir to contain a quantity of engine oil to be supplied through an oil flow corridor of the reservoir to the engine internal oil pressure system for pre-lubrication of the engine. The pre-lubrication system is structured to constantly maintain an acceptable supply of oil within the reservoir and will supply pre-lubricating oil upon a burst of air being initiated and directed into the oil reservoir, through an air flow corridor, so as to displace oil contained in the reservoir out through the oil flow corridor for pre-lubrication of the engine.

Abstract: A variable pressure oil pump assembly for use with a vehicle having a controller includes a pump body having an inlet, an outlet, a valve chamber, a first passage disposed between the inlet and the valve chamber, and a second passage disposed between the outlet and the valve chamber. The assembly further includes a pressure relief valve subassembly having a movable plunger that is disposed at least partially in the valve chamber for controlling flow of oil through the valve chamber so as to control outlet oil pressure at the outlet. A plunger adjustment mechanism is associated with the valve subassembly and adapted to communicate with the controller. The plunger adjustment mechanism is operable to control movement of the plunger based on control signals provided by the controller.

Abstract: To be used with an internal combustion engine having a crank case wherein engine oil is contained, and an engine internal oil pressure system structured to distribute lubricating oil to moving and wearing parts of the engine from the crank case, an engine pre-lubrication system which includes an oil reservoir to contain a quantity of engine oil to be supplied through an oil flow corridor of the reservoir to the engine internal oil pressure system for pre-lubrication of the engine. The pre-lubrication system is structured to constantly maintain an acceptable supply of oil within the reservoir and will supply pre-lubricating oil upon a burst of air being initiated and directed into the oil reservoir, through an air flow corridor, so as to displace oil contained in the reservoir out through the oil flow corridor for pre-lubrication of the engine.

Abstract: A device for lubricating a machine comprises at least one pump or arranged in the oil circuit as well as a first oil tank for keeping a reserve of a first oil and a second oil tank for keeping a reserve of a second oil and temporarily storing an oil mixture. Oil lines are also provided between the oil tanks and the lubricating points. Furthermore, there is an oil sump for collecting the oil or oil mixture downstream of the lubricating points. Oil lines are provided between the oil sump and the two oil tanks. At least one first switching device is arranged in the oil lines, for opening or blocking the oil lines. Between the second oil tank and the first oil tank there is an oil line, which can be controlled by a second switching device. This device has the effect of improving the lubrication and extending the oil intervals.

Abstract: Oil retention recesses are formed in an outer periphery of the slider block of a scroll compressor. The recesses insure that a quantity of oil is captured and maintained during operation and after shutdown of the scroll compressor. If the scroll compressor is operated or started back up during a “starved” lubricant condition, the captured oil insures the scroll compressor can operate without damage for a period of time such that lubricant can be returned to the sealed compressor.

Abstract: An internal combustion engine pre-lubrication system that operates before a typical internal combustion engine is started, in which engine oil inside the pre-lubrication system is rapidly delivered in advance of actual starting through the main oil duct to the internal combustion components requiring lubrication. When the internal combustion engine starting process occurs, all the engine components operate quicker, piston compression is more optimal, internal combustion engine starting is easier, frictional wear between engine components is reduced, fuel combustion is more complete and thereby complies with exhaust emission standards, and overall internal combustion engine service life is effectively prolonged.

Abstract: A lubricating oil discharge port is provided that is improved so well that a quick supply of lubricating oil is not disturbed and that film lubrication is not lost when the engine is started. The lubricating oil discharge port 18a for allowing lubricating oil to flow out of a lubricating oil passage 18 in which an oil pressure source is provided at a lower portion thereof into a bearing bore 12 for a camshaft 10 of an engine is made to open in a top surface of a boss 19 provided so as to protrude from a bottom of a recessed well 15 acting as a lubricating oil reservoir provided in an inner circumferential surface on a lower side of the camshaft bearing bore.

Abstract: A portable fluid transfer conduit is disclosed having an elongated flexible conduit having an inlet and outlet port. A coupling is postured at the inlet port for receiving fluid from a fluid source such as prelubrication pump. A flow control member is located at the discharge end which includes an activator for controlling the flow of fluid. The flow control member may include a portable pump where the fluid source does not have a powered flow.