Class / Patent application number | Description | Number of patent applications / Date published |
073114770 | Testing of an individual engine part | 47 |
20080307872 | Device and Method for Inspecting Connecting Rod - A connecting rod inspecting device is provided with a work table for placing a connecting rod in a status where the connecting rod is positioned at a prescribed position; a slide unit for reciprocating the work table along the horizontal direction; and first to fourth distance sensors for measuring a step quantity (D) of a step part by irradiating measuring planes composed of curved surfaces with laser beams and measuring distances between the sensors and the planes irradiated with the beams. Conforming/nonconforming judgment is made by the measured step quantity (D) and a range of allowable quantities previously set. | 12-18-2008 |
20090139319 | Device for Use in Rating Engine Deposits - A sectioning device for use in dividing an engine part into sections for rating is provided. The sectioning device has a plurality of sectioners that are slidingly engaged in grooves of two separate plates, held together by at least a fastener. In operation, the sectioners can be adjusted to accommodate engine parts of different sizes, with minimal damages and losses of engine deposits in the rating process. | 06-04-2009 |
20100000309 | Method and device for monitoring an exhaust-gas turbocharger - The present invention relates to a method and a device for monitoring an exhaust-gas turbocharger of an internal combustion engine. In order to create an inexpensive and also reliably operating method and a corresponding device for monitoring an exhaust-gas turbocharger, it is proposed that a sound transducer which is designed to record rotational-speed dependent turbocharger operating noise is provided, which sound transducer is connected to an electronic system for frequency analysis for the output of a turbocharger rotational speed signal. | 01-07-2010 |
20100313642 | Liner Inspection Tool and Method of Inspecting a Cylinder Liner - The invention relates to a method and a device ( | 12-16-2010 |
20110203360 | Internal Position And Limit Sensor For Free Piston Machines - A sensor for sensing the position of a reciprocating free piston in a free piston Stirling machine. The sensor has a disk mounted to an end face of the power piston coaxially with its cylinder and reciprocating with the piston The disk includes a rim around its outer perimeter formed of an electrically conductive material A coil is wound coaxially with the cylinder, spaced outwardly from the outer perimeter of the disk and mounted in fixed position relative to the pressure vessel, preferably on the exterior of the pressure vessel wall. | 08-25-2011 |
20110259094 | METHOD FOR TESTING THE FUNCTIONALITY OF AT LEAST ONE INJECTOR - A method for checking the functionality of at least one injector ( | 10-27-2011 |
20120055240 | PISTON STROKE DISCRIMINATING APPARATUS FOR GENERAL-PURPOSE ENGINE - In an apparatus for discriminating a piston stroke of a general-purpose internal combustion engine connectable to an operating machine to be used as a prime mover of the machine and having a four-stroke operating cycle comprising intake, compression, expansion and exhaust, the operating cycle is discriminated based on intake air temperature detected by an intake air temperature sensor whether a stroke next to a predetermined crank angular position at which a crank angle sensor produces an output is the intake stroke or the expansion stroke, when operation of the engine is determined to be under a stable condition. With this, it becomes possible to discriminate the four-stroke operating cycle of the general-purpose engine without using an expensive pressure sensor. | 03-08-2012 |
20130081456 | CAM TARGET WHEEL FOR VEHICLE - A cam target wheel for a vehicle may include a camshaft; and a lobe, formed on an outer circumferential surface of the camshaft, for recognizing a ridge and valley of a cam vibration waveform. | 04-04-2013 |
20130283898 | METHOD AND SYSTEM FOR DIAGNOSING A VACUUM SYSTEM - A vacuum system diagnostic is disclosed. In one example, vacuum system leaks are diagnosed via a pressure reading of a vacuum reservoir. The approach may reduce the number of sensors used to diagnose vacuum system degradation. | 10-31-2013 |
20140053642 | METHOD AND DEVICE FOR MEASURING THE ROTATIONAL SPEED OF A TURBOCOMPRESSOR, AND MOTOR VEHICLE - A method and a device for measuring the rotational speed of a turbocompressor, in particular a turbocharger of a motor vehicle. A frequency of pressure pulses generated in the medium the blades or by the shaft of the turbocompressor is measured using high-frequency signal portion of a pressure sensor, and the turbocompressor rotational speed is ascertained from the measured pressure pulse frequency. Furthermore, the charge pressure of the turbocompressor can be ascertained from the low-frequency signal of the pressure sensor so that a single sensor is sufficient for both measurements. The pressure sensor can be arranged in the intake system downstream of the compressor, upstream or downstream of an intercooler. | 02-27-2014 |
20140144221 | APPARATUS, SYSTEM, AND METHOD FOR TESTING A TURBOCHARGER - A testing apparatus for a turbocharger is provided. In one example, the testing apparatus comprises a regulatable air input source configured to fluidically couple to one of an oil inlet or an oil outlet of an oil structure cavity of the turbocharger, an air flow measurement device including a flow restrictor which is configured to be coupled to the regulatable air input source, and media embodying instructions for correlating an amount of measured air flow measured by the air flow measurement device to a degree, rate, and/or amount of leakage past a turbocharger bearing component configured to restrict flow to or from the oil structure cavity. | 05-29-2014 |
20140366615 | METHOD FOR DIAGNOSING THE MALFUNCTIONING OF A DEVICE FOR ADDING AN ADDITIVE INTO A FUEL FOR A VEHICLE, AND SYSTEM FOR IMPLEMENTING SAID METHOD - The invention relates to a method for diagnosing the malfunctioning of a device for adding an additive into a fuel for a vehicle comprising an internal combustion engine, said method including: a step of analyzing the fuel in order to determine a variation in the amount of additive in the fuel; a step of comparing the variation in the amount of additive, measured during the previous step, with a theoretical variation in said amount; a step of sending information when the difference between the measured variation and the theoretical variation exceeds a set value. The invention also relates to a system for adding an additive into fuel and for diagnosis for a vehicle comprising an internal combustion engine, which is intended for implementing said method. | 12-18-2014 |
20150354446 | ACOUSTIC MEASURING DEVICE - An acoustic measuring device ( | 12-10-2015 |
20160146071 | METHOD AND SYSTEM FOR DETECTING MALFUNCTION OF FASTENING BOLT IN CVVT - A method for detecting malfunction of a fastening bolt in a continuous variable valve timing (CVVT) includes: deciding whether a camshaft position sensor is operating normally; learning the most retarded angle position of the camshaft using the camshaft position sensor; deciding whether the learning of the most retarded angle position of the camshaft is normal; and comparing a PWM duty value used in the learning with a set first reference value when the learning of the most retarded angle position of the camshaft is normal. | 05-26-2016 |
20160161369 | METHOD FOR ISOLATING QUANTITY ERRORS OF A FUEL AMOUNT AND AN AIR AMOUNT DELIVERED TO AT LEAST CYLINDER OF AN INTERNAL COMBUSION ENGINE - A method for determining quantitative errors in a fuel quantity and air quantity delivered to at least one cylinder of an internal combustion engine, in which in a first phase a cylinder equalization of the internal combustion engine is accomplished, and an error in the fuel quantity delivered to the at least one cylinder is determined therefrom. In a second phase the internal combustion engine is operated with a stoichiometric ratio of air quantity and fuel quantity, a feature of the at least one cylinder correlating with an indicated mean pressure is sensed, and an error in the air quantity delivered to the at least one cylinder is determined from the feature correlating with the indicated mean pressure. | 06-09-2016 |
20160169790 | SYSTEM AND METHOD FOR TESTING EXPOSURE OF A HYDROCARBON ON A COMPONENT | 06-16-2016 |
20170234770 | SOLENOID TESTING SYSTEM | 08-17-2017 |
073114780 | Piston ring | 3 |
20110113873 | APPARATUS AND METHOD FOR MONITORING SLIDING STATE OF PISTON - The present invention is an apparatus and a method for monitoring a sliding state of a piston ring. The present invention detects a cycle of rotation of a piston ring based on a temperature at a predetermined site of a cylinder liner, and determines a sign of burning of a piston based on a state of the rotation. As a result, it is possible to detect a sign of burning of a piston by an apparatus less expensive than apparatuses using a conventional technique of detecting a capacitance. | 05-19-2011 |
20110132079 | FIXTURE FOR MEASURING THE DRAG OF A PISTON RING IN AN ENGINE CYLINDER AND METHODS OF USE THEREOF - A fixture for measuring the resistance of a piston ring in a cylinder, comprising an elongate member having a first end and a second end and a central axis extending therebetween, and an expandable platform attached to the second end of the stem, the platform having a top surface facing towards the first end, the top surface being perpendicular to the central axis, the top surface including first, second and third points movable radially outward from the central axis, and methods of use thereof. | 06-09-2011 |
20140069179 | METHOD AND APPARATUS FOR TESTING PISTON SEALS - A seal testing apparatus includes a clamp assembly which receives, secures and rotates a piston and seal assembly, a mandrel which extends into the seal assembly and supports a guide which carries a spring biased sensing probe or tooth which is oriented along the axis of the mandrel. In another embodiment, the components are the similar except that the probe or tooth is disposed in the mandrel and extends circumferentially. In both embodiments, data from an optical, laser or acoustic sensor is analyzed to determine the integrity of the piston seal. Yet another embodiment includes an arbor which rotates the seal and an adjacent contra-rotating cylinder having a conical mirror. As the seal, arbor and cylinder rotate, light reflected off the mirror and the seal, and returned to the mirror and a sensor provide data which is again analyzed to determine the integrity of the piston seal. | 03-13-2014 |
073114790 | Valve train | 22 |
20080229817 | Method and device for operating an internal combustion engine having at least one cylinder - A method and a device for operating an internal combustion engine including at least one cylinder are described, the at least one cylinder including at least one intake valve and at least one exhaust valve and a diagnosis of at least one erroneous intake valve or at least one erroneous exhaust valve is made possible without using a position acknowledgment. A gas exchange of the at least one cylinder is diagnosed thereby. For detection of at least one intake valve or exhaust valve for the existence of an erroneous valve position, at least one intake valve or exhaust valve of the at least one cylinder different from at least one intake valve or exhaust valve to be detected is brought into a predefined position, which is selected in such a way that the gas exchange of the at least one cylinder in the case of an erroneous valve position of the at least one intake valve or exhaust valve to be detected differs significantly from the gas exchange of the at least one cylinder for the case of an error-free valve position of the at least one intake valve or exhaust valve to be detected, a value characteristic for the gas exchange of the at least one cylinder being ascertained, this value being expected at the moment for an error-free state of the set valve positions of the at least one intake valve and the at least one exhaust valve of the at least one cylinder, the actual value characteristic for the gas exchange of the at least one cylinder being ascertained and an error in the position of the at least one intake valve or exhaust valve to be detected is recognized as a function of the deviation in the actual value from the expected value. | 09-25-2008 |
20090044613 | APPARATUS AND METHOD FOR MEASURING VALVE LASH - A valve lash measurement device is provided for an internal combustion engine having an articulated valve train including a rocker arm having a bore at one end that receives a valve abutting shoe having an uneven surface. A fixed geometry reference surface is attached to a spring loaded base insertable into the bore. A weight connected to an arm and hook with a fulcrum in between is movable along a reference plate to pivot the rocker arm between its extremes of movement. A dial indicator abuts the reference surface and indicates the relative displacement between the extremes of movement and therefore the lash. | 02-19-2009 |
20090114003 | Method and device for diagnosing a diverter valve of an internal combustion engine having a compressor - A method for diagnosing a diverter valve of an internal combustion engine having a compressor is provided, for which diagnosis a variation over time of a charging pressure of the internal combustion engine as a result of a predefined triggering of the diverter valve is analyzed, the triggering of the diverter valve taking place in such a way that a diverter valve moved in the direction of its closing position is expected. Depending on the resulting variation over time of the charging pressure, an open jamming diverter valve is diagnosed if the variation over time of the charging pressure is not plausible with an expected variation over time for a diverter valve moved in the direction of its closing position. | 05-07-2009 |
20090199628 | METHOD AND DEVICE FOR DIAGNOSING AT LEAST ONE GAS EXCHANGE VALVE OF AT LEAST ONE CYLINDER OF AN INTERNAL COMBUSTION ENGINE - A method and a device for the diagnosis of at least one gas exchange valve of at least one cylinder of an internal combustion engine that is on the one hand reliable and on the other hand does without additional sensor equipment are described. In a first operating state of the internal combustion engine, at least one gas exchange valve of the at least one cylinder is activated. In a second operating state of the internal combustion engine, all the gas exchange valves of the at least one cylinder are deactivated and therewith closed in stationary fashion. Sound waves produced by the internal combustion engine are acquired. It is checked whether a significant change occurs in a quantity characterizing the acquired sound waves upon a transition from the first operating state to the second operating state. In this case, an erroneous opening of the at least one gas exchange valve is recognized. | 08-13-2009 |
20090288480 | ABNORMALITY DETERMINATION APPARATUS AND ABNORMALITY DETERMINATION METHOD FOR VALVE CHARACTERISTICS CHANGE MECHANISM - To an electronic control unit is connected a shaft position detection sensor that outputs, as a shaft position detection value, a signal whose magnitude changes stepwise by a predetermined amount in correspondence with the position of a control shaft of a valve characteristics change mechanism. The electronic control unit stores in advance, as a determination reference value, the drive amount of an actuator at the time when the magnitude of the shaft position detection value changes. The electronic control unit performs normality determination to indicate that the valve characteristics change mechanism is operating normally when the drive amount at the time when the shaft position detection value changes along with driving of the actuator and the determination reference value correspond to each other, and performs abnormality determination to indicate that an abnormality is occurring in the valve characteristics change mechanism when the drive amount and the determination reference value do not correspond to each other. | 11-26-2009 |
20090314074 | Preventive Maintenance Diagnostics for Valve Systems - A valve system includes a valve and a controller that controls the valve. The valve includes a valve body, and a motor configured to deliver a torque to the valve body to cause the valve body to move between an open position and a closed position. The controller is configured to drive the motor by applying a current to the motor. The controller is configured to measure the torque delivered by the motor to the valve body, compare the calculated torque with a threshold value, and diagnose a need by the valve system for preventive maintenance when the calculated torque is substantially equal to the threshold value. The threshold value represents substantially the maximum amount of torque available from the stepper motor. | 12-24-2009 |
20100031738 | METHODS FOR VARIABLE DISPLACEMENT ENGINE DIAGNOSTICS - Various methods are described for monitoring cylinder valve deactivation in an engine, the engine including at least a cylinder valve actuator for deactivating at least a cylinder of the engine. One example method comprises indicating degradation of the valve actuator based on crankshaft acceleration. | 02-11-2010 |
20100154526 | SOLENOID DIAGNOSTIC SYSTEMS FOR CYLINDER DEACTIVATION CONTROL - A solenoid diagnostic system includes a pressure monitoring module that determines a first pressure in an intake cam phaser for an intake camshaft and a second pressure in an exhaust cam phaser for an exhaust camshaft associated with a cylinder. A fuel injection monitoring module determines a fuel injection status associated with the cylinder. A fault determination module diagnoses a fault in a solenoid associated with the cylinder based on the first pressure, the second pressure, and the fuel injection status. | 06-24-2010 |
20100288037 | Method for Determining Valve Degradation - A method for determining degraded valve operation. According to the method, valve degradation can be determined from the duration of a spark event. This method allows for the determination of both intake and exhaust valve degradation. | 11-18-2010 |
20100300189 | DIAGNOSTIC SYSTEM FOR VARIABLE VALVE TIMING CONTROL SYSTEM - A fuel diluting quantity is estimated based on an alcohol concentration of the fuel. A response-deterioration determination value is corrected according to the estimated fuel diluting quantity. The response-deterioration determination value can be properly established even though the responsiveness of the variable valve timing controller is varied due to a variation in viscosity of the lubricant. Thereby, even when the responsiveness of the variable valve timing controller is varied (deteriorated) due to an increase in the fuel diluting quantity, it can be avoided that the computer determines that the variable valve timing controller has a defect. | 12-02-2010 |
20110138898 | VARIATOR FAULT DETECTION SYSTEM - A variator fault detection system for a continuously variable transmission is incorporated into a hydraulic control circuit that controls fluid pressure applied to a variator of the continuously variable transmission. The hydraulic control circuit for the variator includes a number of electrically-controlled shift valves and pressure control valves. Sensing devices are multiplexed to these valves to detect a number of different possible fault states relating to the variator shift valves and the variator pressure control valves. | 06-16-2011 |
20110154892 | APPARATUS FOR DETERMINING AN ABNORMALITY OF A CONTROL VALVE OF AN INTERNAL COMBUSTION ENGINE - The present invention is applied to an internal combustion engine comprising a first supercharger | 06-30-2011 |
20130000397 | VALVE KEEPER VERIFICATION TOOL - A valve keeper verification tool is provided. The tool may include: an elongated body having two ends; an axial hole in one end of the body dimensioned to fit over a valve stem; and structure surrounding the hole dimensioned to contact at least one keeper of a retainer for an engine valve, wherein the tool is angled near the hole between about 10 and about 25 degrees. A method of checking to ensure a valve retaining keeper is in place may also be provided. The method may include: inserting a valve stem into a hole in a valve keeper verification tool; moving the valve keeper verification tool against a keeper; and applying a force against the keeper. | 01-03-2013 |
20130118246 | SHUT-OFF VALVE TESTING SYSTEM - The shut-off valve testing system provides for the testing of the main shut-off valve of a combustible gas supply line in such facilities as refineries, factories, or other plants utilizing such gaseous fuel. The system includes a double-ended hydraulic cylinder receiving hydraulic pressure from a suitable source, the cylinder communicating hydraulically with a hydraulic actuator for the main shut-off valve. The system provides for testing of the shut-off valve by actuating the valve through a portion of its full travel, thus confirming that the valve is free. This is accomplished by shutting off the pressure to one side of the double-ended hydraulic cylinder, and opening the hydraulic line between the cylinder and the actuator. Thus, hydraulic pressure from the actuator can bleed to the cylinder, allowing the actuator to move to the extent of the limiting spring and/or hydraulic pressure to the opposite side of the cylinder. | 05-16-2013 |
20130145832 | DIAGNOSTIC FOR TWO-MODE VARIABLE VALVE ACTIVATION DEVICE - A method is provided for diagnosing a multi-mode valve train device which selectively provides high lift and low lift to a combustion valve of an internal combustion engine having a camshaft phaser actuated by an electric motor. The method includes applying a variable electric current to the electric motor to achieve a desired camshaft phaser operational mode and commanding the multi-mode valve train device to a desired valve train device operational mode selected from a high lift mode and a low lift mode. The method also includes monitoring the variable electric current and calculating a first characteristic of the parameter. The method also includes comparing the calculated first characteristic against a predetermined value of the first characteristic measured when the multi-mode valve train device is known to be in the desired valve train device operational mode. | 06-13-2013 |
20130263653 | Method and device for diagnosing a blowoff valve for a supercharging device of an internal combustion engine - A method for diagnosing a blowoff valve in an engine system having a supercharged internal combustion engine, the blowoff valve being situated in a blowoff line around a compressor of a supercharging device, by performing the following: detecting a compressor rotational speed indication of the supercharging device; and determining a malfunction of the blowoff valve if the compressor rotational speed indication includes an oscillation after the blowoff valve is activated for opening the blowoff valve. | 10-10-2013 |
20130312506 | SYSTEMS, METHODS, AND DEVICES FOR VALVE STEM POSITION SENSING - A linear variable differential transformer (LVDT) for monitoring engine valve position is disclosed. The system includes a valve guide having an elongated recess through it. The engine valve has a valve head and a valve stem with two adjacent materials having different magnetic properties meeting at an interface. The valve stem fits and moves linearly within the valve guide, and the valve head closes an engine combustion chamber. It also includes monitoring coils within the valve guide that create a signal related to the position of the interface within the valve guide. An engine control unit (ECU) is coupled to the monitoring coils and receives and analyzes the signal from the monitoring coils to determine operation of the valve. | 11-28-2013 |
20150377095 | DIAGNOSTIC METHOD FOR A VALVE DRIVE ACTUATOR - A method for diagnosing an electromagnetic actuator of a sliding cam valve drive of an internal combustion engine. An actuator pin is released by electrical energising of the actuator and is introduced into a groove-like sliding slot which passes through a cylindrical slot section of the associated sliding cam-and ends in a slope onto the cylindrical circumference of the slot section. The method includes: energising the actuator using current parameters of a variable actuator characteristic map so that the actuator pin is released when the cylindrical circumference overlaps the actuator pin circumferentially; determining whether the released actuator pin generates a rejection signal due to the slope from the sliding slot onto the cylindrical circumference; if no rejection signal is detected, repeating step a) whereas at least one current parameter is changed and step b); updating the actuator characteristic map with the changed current parameter. | 12-31-2015 |
20160091293 | MODULAR SYSTEM FOR CHECKING A VALVE SEAT AND A VALVE GUIDE IN CYLINDER HEADS OF INTERNAL COMBUSTION ENGINES - A modular system ( | 03-31-2016 |
20160108766 | METHOD FOR DIAGNOSING VARIABLE VALVE ACTUATION MALFUNCTIONS BY MONITORING FLUID PRESSURE IN A CONTROL GALLERY - A system and method for diagnosing malfunctions in a variable valve actuation device. The method uses a rocker arm assembly with a hydraulically operated latch for latching together first and second arms of the rocker arm assembly when latched. The rocker arm assembly includes a source of pressurized fluid connected to a hydraulic valve that provides fluid high or low pressure fluid to the hydraulically-operated latch. A control gallery connects the hydraulic valve to the latch. A pressure transducer is positioned within the gallery and is adapted to create a signal indicating the pressure in the gallery. A control unit is coupled to the hydraulic valve and the pressure transducer. The control unit is adapted to sense engine operation parameters, actuate the hydraulic valve, read the signal from the pressure transducer; and identify malfunctions of the rocker arm assembly based upon the signal from the transducer. | 04-21-2016 |
20160138484 | SYSTEMS, METHODS, AND DEVICES FOR VALVE STEM POSITION SENSING - A linear variable differential transformer (LVDT) for monitoring engine valve position is disclosed. The system includes a valve guide having an elongated recess through it. The engine valve has a valve head and a valve stem with two adjacent materials having different magnetic properties meeting at an interface. The valve stem fits and moves linearly within the valve guide, and the valve head closes an engine combustion chamber. It also includes monitoring coils within the valve guide that create a signal related to the position of the interface within the valve guide. An engine control unit (ECU) is coupled to the monitoring coils and receives and analyzes the signal from the monitoring coils to determine operation of the valve. | 05-19-2016 |
20160195037 | SENSOR SUPPORT STRUCTURE | 07-07-2016 |
073114810 | Bearing | 5 |
20080202226 | Bearing Arrangement For Mounting at least One Machine Elements on a Support - The invention relates to a bearing arrangement for mounting at least one machine element on a support, wherein the machine element is movably mounted on the support, wherein the bearing arrangement is provided with at least one measuring sleeve and with at least one measuring element on the measuring sleeve, wherein the measuring sleeve is formed separately from the support and wherein the measuring element is provided at least for measuring physical parameters and processes in the bearing arrangement. | 08-28-2008 |
20100251810 | COMBINATION OF BEARING COMPONENT AND SENSOR - A combination of a bearing component and a sensor, wherein: (a) at least a portion of the bearing component is formed from a bearing steel; (b) the sensor comprises a sensor element and a support therefor; (c) at least a portion of the support is formed from a low carbon steel comprising no more than 0.2 wt. % carbon or from nickel or an alloy thereof or from titanium or an alloy thereof; and (d) the bearing component and the support are welded or brazed to one another via said respective portions. | 10-07-2010 |
20140331753 | SYSTEM AND METHOD FOR DETERMINING A HEALTH OF A BEARING OF A CONNECTING ROD - A system for determining a health of a bearing associated with a connecting rod is provided. The system includes a sensor associated with the connecting rod and remotely disposed relative to the bearing of the connecting rod. The sensor is configured to generate a signal indicative of a temperature of the bearing. The system includes a controller communicably coupled to the sensor. The controller is configured to receive the signal indicative of the temperature of the bearing. The controller further determines a health of the bearing as a function of the signal of the temperature of the bearing. | 11-13-2014 |
20140331754 | DIAGNOSTIC SYSTEM AND METHOD FOR A BEARING OF A CONNECTING ROD - A system for determining a health of bearing associated with a connecting rod is provided. The system includes an oil collector placed proximate to the connecting rod and configured to receive an oil cast off from side thrust surfaces of the connecting rod during movement of the connecting rod. The system includes a sensor associated with the oil collector and configured to generate a signal indicative of a temperature of the oil cast off from the side thrust surface of the connecting rod. The system also includes a controller communicably coupled to the sensor. The controller is configured to receive the signal indicative of the temperature of the oil cast off from the side thrust surface of the connecting rod. The controller further determines the health of the bearing as a function of the signal of temperature of oil cast off from side thrust surface of the connecting rod. | 11-13-2014 |
20160186801 | AIR CYCLE MACHINE WITH BEARING FAILURE DETECTION - A bearing monitoring system is provided including one or more bearings within a flow passage and a working fluid passing over at least one surface of the bearings. A first thermocouple is located in the flow passage upstream relative to the one or more bearings and configured to measure a first temperature of the working fluid and a second thermocouple is located in the flow passage downstream relative to the one or more bearings and configured to measure a second temperature of the working fluid. The system further includes a control device in communication with the first thermocouple and the second thermocouple, and configured to compute a temperature gradient across the one or more bearings from the first temperature and the second temperature, compare the temperature gradient against a known value, and if the temperature gradient exceeds the known value, the control device is configured to provide an alert. | 06-30-2016 |