Abstract: The present invention relates to a method for, and wearing parts to be used in a method for, condition based preventive maintenance (PM) or predictive maintenance (Pd M) based on detecting excessive wear of a wearing part which wearing part either consists primarily of, or is covered at least partially by a sliding layer consisting primarily of, a polymer material and which wearing part comprises one or more optical fibers which in the proximal end is connected to a proximal light detecting device and in the distal to a distal end light detecting device.

Abstract: Methods, systems and a self-sensing valve assembly are described for monitoring seal life. The method includes providing a valve assembly movable from an open position to a closed position and including a seal seated within the valve and in contact with a surface of the valve assembly, wherein when the seal is in operation it is subject to degradation. At least one sensor is placed for measuring micro strain on a surface of the valve assembly or within the valve assembly. The valve assembly is placed in an operation wherein the seal is subject to degradation and the operation of the valve assembly is initiated.

Abstract: An aspect of the present disclosure provides a diagnosis device for an internal combustion engine. The internal combustion engine 1 includes a variable geometry type turbocharger 14, and the turbocharger includes a variable vane 28, a link mechanism configured to operate the variable vane, and an actuator 29 configured to drive the link mechanism. The diagnosis device includes a control unit 100 configured to control an opening degree of the variable vane by controlling the actuator. The control unit determines that an abnormality has occurred in the link mechanism of the turbocharger when an operating time of the internal combustion engine in a predetermined operating region exceeds a predetermined upper limit value and a differential pressure between a target boost pressure determined according to an operating state of the internal combustion engine and an actual boost pressure exceeds a predetermined upper limit value.

Abstract: A toothed belt includes at least one tension member and a plastics material matrix which at least partially encases the tension member. The at least one tension member extends in the plastics material matrix in a running direction and teeth of the toothed belt are formed transversely to the running direction in the plastics material matrix. The tension member is formed from an electrically conductive material and the plastics material matrix is formed from an electrically insulating material. The toothed belt has at least one electronic component which is embedded in the plastics material matrix and has at least one sensor which detects data on a condition parameter of the toothed belt. The at least one electronic component is coupled to the tension member via at least two voltage taps to tap a voltage induced in the tension member to supply the at least one electronic component with power.

Abstract: A pump health assessment system and a method for providing a pump health of a pump is disclosed. The method includes: determining that there is an imbalance in the pump; increasing pump flow from the pump; measuring a rail pressure of a fuel rail; determining if the rail pressure is substantially equal to an expected rail pressure profile; and in accordance with a determination that the rail pressure is not substantially equal to the rail pressure profile, outputting an indication of pump damage.

Abstract: Methods and systems for fault mitigation in an engine system. For ordinary operation, a set of control signals are generated after calculating airflows within the engine system using a set of flow models linked to components of the engine system, while underweighting or omitting an output of a sensor in the engine system. When a fault is identified, the set of flow models is analyzed differently by underweighting or omitting one or more flow models in favor of using the sensor output. By so doing, the engine system can continue to be operated without triggering an on-board diagnostic alert requiring cessation of operation.

Abstract: A refueling control system for an internal combustion engine includes a fuel tank; a vapor pipe; a step motor-driven shut-off valve; a fuel filler lid; and an electronic control unit configured to, when the fuel filler lid is to be opened, i) drive the shut-off valve such that the shut-off valve is opened, ii) close the fuel filler lid when an opening degree of the shut-off valve is less than a set opening degree, and iii) open the fuel filler lid when the opening degree of the shut-off valve is greater than or equal to the set opening degree. The electronic control unit sets the set opening degree such that the set opening degree when an opening speed of the shut-off valve is low is greater than the set opening degree when the opening speed of the shut-off valve is high.

Abstract: A method includes obtaining a vibration signal acquired by an accelerometer sensor; eliminating a deterministic component of the vibration signal; obtaining, for a determined defect, a characteristic theoretical frequency of this defect and a determined maximum deviation around this theoretical frequency; computing, as a function of a cyclic frequency, an integrated cyclic coherence of the processed vibration signal; estimating an actual frequency of the defect on the basis of the integrated cyclic coherence, of the theoretical frequency of the defect and of the maximum deviation; computing a diagnostic indicator of the defect by summing M integrated cyclic coherences of the vibration signal evaluated as M cyclic frequencies respectively equal to M harmonics of the estimated actual frequency of the defect; comparing the diagnostic indicator of the defect with a predetermined threshold, and in the event of it being exceeded, detecting the defect on the bearing.

Abstract: Systems and methods for delivering multiple ocular implants to reduce intraocular pressure are disclosed. The ocular implants can be implanted at multiple sites within a single human eye without requiring removal of the delivery apparatus from the eye. A system for delivering multiple ocular implants can include at least two implants preloaded within a delivery device and configured to be implanted within the eye, a metering device configured to transfer energy to the implants for delivery at selected locations within the eye, wherein the metering device is configured to meter a variable amount of energy for each implant delivery event in the eye. The system can further include an injector mechanism configured to serially engage and drive each of the implants.

Abstract: An unbalance detection device for detecting unbalance of a rotor of a turbo-cartridge which includes the rotor including a turbine wheel and a compressor wheel coupled via a rotational shaft and a bearing housing accommodating a bearing which supports the rotor rotatably, includes: a sound pressure sensor capable of detecting vibration upon rotation of the rotor by contactlessly measuring a sound pressure generated from vibration upon rotation of the rotor.

Abstract: A vibration detection device for detecting vibration of a cartridge including a bearing housing that accommodates a rotor coupling a wheel and a rotor shaft, and a bearing rotatably supporting the rotor, the bearing housing including a lubricant-oil passage port for allowing lubricant oil to pass through an interior of the bearing housing, includes: a sensor mount attached to an oil-flow-passage forming member configured to be capable of connecting to and separating from the bearing housing, the oil-flow-passage forming member including, inside thereof, an oil flow passage through which one of lubricant oil to be supplied to the interior of the bearing housing via the lubricant-oil passage port or lubricant oil discharged from the interior of the bearing housing via the lubricant-oil passage port flows; a vibration sensor disposed on the sensor mount; and a vibration transmission leg portion connected to the sensor mount and configured to be in contact with the bearing housing in a state where the oil-flow-pa

Abstract: A method for detecting a change in the operating behaviour of a crank drive of a motor vehicle such as cracks in the crank drive or for detecting bearing wear. The crank drive includes a crankshaft, a pulse generator generating a signal S dependent on the rotational speed of the pulse generator and the distance of the pulse generator away from the sensor device. The method includes steps of detection of a current signal Scur of the sensor device during the operation and comparing the current signal Scur with a reference signal Sref stored in a memory and detecting a change in the operating behaviour of the crank drive such as cracks in the crank drive or bearing wear, from the comparison of the current signal Scur with the reference signal Sref.

Abstract: Methods are provided for identifying degradation in components of a compressor recirculation valve (CRV). One method may include inferring degradation of the CRV based on adaptation of a compressor surge line outside an expected range.

Abstract: The embodiments described herein include a method and system for determining velocity and a motor controller implementing such velocity determination. In one embodiment, a rotatable element has a digital encoder coupled thereto for determining discrete angular positions of the rotatable element. An amount of time for the rotatable element to rotate between two successive ones of the discrete angular positions is measured. The amount of time is converted to a rotational velocity determination of the rotatable element.

Abstract: A high-speed test rig is for rotationally testing articles such as seals, bearings, couplers, etcetera. The test rig includes a shaft extension sized to receive a test article annular body about an outer surface and a primary shaft including of a solid rod. The rod has two outer circumferential base surface sections each having an outside diameter and disposed within a separate bearing such that the shaft assembly is rotatable about an axis. The rod has a first end coupled with the shaft extension, such that a cantilever beam is defined between the shaft extension outer end and a first bearing, and a second end coupled with a motor shaft.

Abstract: The present disclosure relates to a belted transmission system configured to couple with load motors to provide a load to a device under test. The belted transmission system comprises a spindle coupled with the device under test. The spindle comprises various components configured to facilitate high operational speeds and increased power relative to prior art systems. For example, the spindle comprises a shaft having a larger diameter at one end compared to the other, one or more bearings configured to facilitate rotation of the shaft, and a sprocket coupled to the shaft configured to receive belts coupled to load motors such that the shaft is driven by the one or more belts to turn the spindle and load the device under test. The belted transmission includes a housing configured to enclose the belts and at least a portion of the spindle.

Abstract: An turbocharger for a vehicle is provided. The turbocharger includes a shaft that has a hollow aperture at an inside thereof and an outer circumferential surface of the shaft includes an inlet aperture and an outlet aperture which communicate with the hollow aperture. A turbine wheel is integrally installed at the shaft and a hollow groove formed in the wheel communicates with the hollow aperture. A center housing includes a shaft groove in which the shaft is rotatably installed. The center housing includes an oil passage to which oil is supplied from an oil pipe, an air passage to which air is supplied from an air tank, and an injection passage extending to the shaft groove while being connected to the oil and air passages. An oil valve and an air valve are installed in the oil and air passages, respectively, to selectively open/close flow of a fluid.

Abstract: A method of assembling an electrified turbocharger comprising assembling a rotor assembly onto a shaft; balancing the shaft and rotor assembly; attaching at least one bearing onto the shaft adjacent the rotor assembly; inserting a stator assembly into a first housing component; axially inserting the shaft, the rotor assembly, and the at least one bearing into the first housing component; attaching a second housing component to the first housing component; attaching a compressor wheel to a first end of the shaft; and attaching a turbine wheel to a second end of the shaft and balancing the electrified turbocharger.

Abstract: A method of evaluating a wear state of an assembly of a flow machine, in particular, of a bearing arrangement of a pump or turbine. For determining a wear characteristic, a mechanical query signal having a pre-definable signal shape is generated by a signal generator and a response signal generated from the query signal is detected using a sensor in contact with the assembly. The response signal is varied in dependence on a variation of a physical operating value of the assembly in accordance with a characteristic pattern, the wear characteristic is determined from the variation of the response signal and the wear state is evaluated using the wear characteristic.

Abstract: In a method for the automated monitoring of a machine with a rotating machine component, at successive measurement times parameter values (Pt) of operating parameters of the machine and in each case over a predefined measurement duration, vibrations of the machine are recorded. A vibration spectrum (Yt(f)) of the vibrations recorded during the measurement duration is determined for each measurement duration. A mean power density (?t(i)) of the vibration spectrum (Yt(f)) is in each case determined from the vibration spectrum (Yt(f)) for a multiplicity of frequency ranges. During a learning phase a model function ({circumflex over (?)}(1)(P) to {circumflex over (?)}(N)(P)) for an averaged power density is determined for each frequency range as a function of the operating parameters.

Abstract: A method for actuating an electric vacuum pump of a brake booster including indirectly ascertaining a negative pressure in the brake booster. Depending on the indirectly ascertained negative pressure, and on a pumping capacity of the vacuum pump, ascertaining at least one activation parameter for the vacuum pump. Activating the vacuum pump in accordance with the activation parameter, when the indirectly ascertained negative pressure drops below a predefined minimum value.

Abstract: A vehicle part test device includes a first operating portion rotatably mounted to a robot for testing a vehicle part; a second operating portion rotatably mounted to the first operating portion; and a third operating portion rotatably mounted to the second operating portion and having a test portion which tests the vehicle part.

Abstract: A method of detecting anomalies in the service repairs data of equipment. A failure mode-symptom correlation matrix correlates failure modes to symptoms. Diagnostic trouble codes are collected for an actual repair for the equipment. The diagnostic trouble codes are provided to a diagnostic reasoner for identifying failure modes. Diagnostic assessment is applied by the diagnostic reasoner for determining the recommended repairs to perform on the equipment in response to identifying the failure modes. Each of the recommended repairs is compared with the actual repair used to repair the equipment. A mismatch is identified in response to any recommended repair not matching the actual repair. Reports are generated for displaying all of the identified mismatches. The reports are analyzed for determining repair codes having an increase in a number of anomalies. Service centers are alerted of a correct repair for the identified failure mode.

Abstract: A resistance circuit for monitoring a support structure is provided. The resistance circuit may include a first set of resistors disposed at a belt-side and a second set of resistors disposed at a monitor-side. The first set of resistors may be configured to indicate one or more voltages thereacross corresponding to an effective resistance of the support structure. The first set of resistors may include at least one temperature-dependent resistor. The second set of resistors may be configured to indicate one or more voltages thereacross corresponding to an initial effective resistance of the support structure. The second set of resistors may include at least one switched resistor having an adjustable resistance capable of selectively approximating the initial effective resistance.

Abstract: A monitoring system for a support structure is provided. The monitoring system may include a resistance circuit coupled to the support structure, and an interface circuit coupled to the resistance circuit. The resistance circuit may include a first set of resistors and a second set of resistors, wherein the second set of resistors is configured to provide a reference voltage. The interface circuit may include one or more comparators, wherein each comparator is configured to compare a voltage across at least one of the resistors with the reference voltage and generate an output signal corresponding to the comparison. The interface circuit may be configured to continuously monitor an effective resistance of the support structure based on the output signals.

Abstract: A system and method for testing and maintaining a power assembly of a locomotive diesel engine. In one embodiment of the invention, the testing apparatus comprises: a first test position for securing a strongback of a power assembly; a second test position for securing a cylinder head of the power assembly; and a third test position for securing a cylinder liner. In another embodiment of the invention, the testing method comprises: securing a power assembly to a first test position; removing a cylinder head from the power assembly; securing the cylinder head to a second test position; removing a cylinder liner from the strongback assembly; placing the cylinder liner into the third test position; cleaning the cylinder liner; testing the cylinder head for possible leakage; and re-assembling the power assembly cylinder head passes the leakage tests.

Abstract: The invention relates to a monitoring apparatus for monitoring a state of wear of a component of a reciprocating piston internal combustion engine wherein an oil collection device is provided for the collection of lubrication oil from the cylinder so that a predetermined measured quantity of lubrication oil is suppliable from the cylinder to a measurement device.

Abstract: Various methods and systems are provided for detecting particles generated from engine component degradation within an engine system. In one embodiment, a method for an engine comprises indicating engine degradation in response to a buildup of particles in a magnetic field, the magnetic field positioned in a flow of gas.

Abstract: A fuel injection control apparatus includes a low-side driver, arranged electrically downstream of an injector and operable to drive the injector with a changeover of an ON-OFF state thereof in response to a drive signal from a CPU; a high-side driver, arranged electrically upstream of the injector and downstream of a power source, and having an ON-OFF state thereof which may be changed in response to the drive signal from the CPU; a high-side return signal detection unit and a low-side return signal detection unit. Each of the low-side and high-side drivers includes a transistor arranged inside an ECU. The CPU diagnoses a function of a drive circuit based on the presence or non-presence of return signals received from the high-side return signal detection unit and the low-side return signal detection unit with respect to predetermined driving states of both the low-side and high-side drivers.

Abstract: Embodiments for indicating fuel rail temperature sensor degradation are provided. In one embodiment, an engine method comprises delivering gaseous fuel to a cylinder based on feedback from a fuel rail temperature sensor, and during select conditions, indicating fuel rail temperature sensor degradation based on a difference between measured fuel rail temperature and an expected temperature. In this way, measured fuel rail temperature may be correlated with other engine temperatures to detect sensor degradation.

Abstract: 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.

Abstract: A method for testing a supercharger actuator for a supercharger of a supercharged internal combustion engine, including adjusting the supercharger actuator from a first position to a second position, determining a rotational speed change information, which is a function of the change of the rotational speed of the supercharger resulting from the adjustment, and establishing a malfunction of the supercharger actuator as a function of the rotational speed change information.

Abstract: A cam target wheel for a camshaft of an internal combustion engine is disclosed. The cam target wheel includes a first half-wheel and a second half-wheel. The first and second half-wheels are provided with connecting means for their reciprocal connection.

Abstract: A holding device for a fuel injector has a mounting device to accommodate the fuel injector, and a fixing device which has a first part and a second part, which are supported in a guidance in a displaceable manner with respect to the mounting device. The second part is fixable on the guidance and between the first part and the second part of the fixing device an elastic element is situated in such a way that it is in a position to press the first part of the fixing device against a fuel injector situated in the mounting device, in order to fix it in the holding device. Also described is a clamping device for fuel injectors having at least one holding device, which is fastened elastically to the clamping device.

Abstract: 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.

Abstract: Methods and systems are provided for an engine including a humidity sensor. Degradation of the humidity sensor may be determined based on a change in intake air relative humidity as compared to a change in intake air temperature or pressure, under selected conditions. An amount of exhaust gas recirculated to an engine intake is adjusted differently based on whether the humidity sensor is degraded or functional.

Abstract: Various methods and systems are provided for a turbocharger. In one example, a method includes receiving a signal indicative of a monitored pressure of a pressurized oil supply of a turbocharger or other turbomachine. The method further includes determining whether a high frequency component of the signal meets one or more designated criteria, and, if the high frequency component of the pressure meets the one or more designated criteria, generating a first control signal.

Abstract: An internal engine component including a data collector assembly is provided. The data collector assembly includes a sensor for sensing a condition and for generating a signal corresponding to the condition and a digital to analog converter for converting the signal to a digital signal. The data collector assembly also includes a memory for storing data, a clock and a processor. A power source is electrically connected to the sensor, the analog to digital converter, the memory, the clock and the processor. During an engine test, the processor, sensor, digital to analog converter, clock and memory are substantially the only devices that draw electricity from the power source.

Abstract: A system and method are provided for determining the health of an engine. The method includes a plurality of standard noise spectra collected from engines with known defects. A noise spectrum of the engine being monitored is sensed and compared to the plurality of standard noise spectra from the engines with known defects. From the comparison, a type and a degree of defect is identified based upon the comparison.

Abstract: A system for detecting pollution by a poisonous material for an air exhauster of a vehicle may include a temperature sensor provided to the flow line of an exhaust gas and having a catalyst material that causes an exothermic reaction with a pollution material in the exhaust gas, and a controller which stores a standard temperature value of the temperature sensor and operates in such a manner that the exhaust gas may be heated under control of an engine control unit when the temperature value drops by a predetermined amount from the standard temperature value, and that the catalyst material may be determined to have deteriorated when a measured temperature value after heating may be less than the standard temperature value, so that the standard temperature value may be replaced with the measured temperature value, and to a detection method using the same.

Abstract: A fan coupling device 1 connecting an internal combustion engine 31 to a cooling fan 21 comprises an input shaft 3 driven to rotate by the engine 31, a fluid coupling 12 that transmits torque from the input shaft 3 to the cooling fan 21 via a fluid, and a solenoid valve 13 having a valve main body 18 that adjusts a fluid amount in the fluid coupling 12. A determination as to whether or not the valve main body 18 is stuck in a lifted position on the basis of a rotation speed of the cooling fan 21, is started after the elapse of a predetermined time following output of a signal for returning the valve main body 18 to a closed position, The sticking determination can be performed with a high degree of precision without being affected by variation in the rotation speed of the input shaft 3.

Abstract: A method for diagnosing a sensor unit of an internal combustion engine, in which an output signal of the sensor unit is compared to a setpoint value which is specified independently from the output signal. The setpoint value relates to a periodic characteristic, and the variation over time of the value of the output signal of the sensor unit or a variable which is derived from the value variation over time is analyzed with regard to this periodic characteristic.

Abstract: 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.

Abstract: Various methods and systems are provided for a turbocharger. In one example, a method includes determining a first pressure at a first location within a turbocharger and determining a second pressure at a second location within the turbocharger. The method further includes indicating degradation of the turbocharger based on the first pressure and the second pressure.

Abstract: An apparatus includes an operating conditions module that interprets a number of compressor operating parameters; a compressor flow module that determines a compressor inlet flow in response to the number of compressor operating parameters; and a fresh air flow module that provides a fresh air flow value in response to the compressor inlet flow. The operating conditions module further interprets a current mass air flow value, and the apparatus further includes a mass air flow sensor trimming module that adjusts a mass air flow sensor drift value in response to the current mass air flow value and the fresh air flow value. The apparatus includes a diagnostics module that determines a mass air flow sensor is failed in response to the current mass air flow value and the fresh air flow value.

Abstract: A test equipment manifold interface for automated test equipment (ATE) for testing electronic circuits by both Device Under Test Thermal Management (DTM) and non-DTM testing. The manifold interface has a housing, with an air inlet aperture, outlet apertures, and a chamber. The chamber has a chamber inlet provided by the air inlet aperture and a chamber outlet coupled to the outlet apertures. A hollow piston is captive in the chamber. The piston has DTM interface inlet and outlet apertures. In operation, when a DTM load board manifold engages the manifold interface, the hollow piston directs air to flow from the air inlet aperture to the DTM interface outlet aperture. When the DTM load board manifold disengages the manifold interface, the hollow piston directs air to flow from the air inlet to the outlet apertures via the chamber outlet.

Abstract: The present invention features an engine pulley testing device allowing a user to detect a damaged engine pulley. The engine pulley testing device comprises a first support arm and a second support arm pivotably attached to a front side of a top panel, a third support arm pivotably attached to a top panel on a back side of the top panel. A top pulley is attached on the top panel and a first bottom pulley and second bottom pulley are attached to the first and second support arms respectively. An engine belt can be wrapped around the pulleys and a testing pulley for testing. The engine pulley testing device may be attached on a sliding rail to slide to a desired working position.

Abstract: A diagnostic test for a secondary air system comprising an air pump, a first mass air flow sensor connected to the air pump and a first check valve connected to the first mass air flow sensor. A first testing phase is disclosed comprising a first delay period and a first testing period, wherein the air pump is activated. A second testing phase is disclosed comprising a second delay period and a second testing period wherein the first check valve is opened. A third testing phase comprising a third delay period and a third testing period is disclosed wherein the first check valve is closed. A fourth testing phase is disclosed comprising a fourth delay period and a fourth testing period wherein the air pump is deactivated. An optional fifth testing phase is also disclosed comprising a fifth delay period and a fifth testing period wherein the air pump remains off but the check valve is reopened and engine RPMs are increased.

Abstract: A testing apparatus for a turbocharger is provided. The turbocharger includes a turbine and a compressor, and a non-contact seal positioned between an oil cavity and one of the turbine and the compressor. In one embodiment, the testing apparatus includes a regulatable air input configured to couple to an outlet of the oil cavity, the regulatable air input coupled to an air supply, and a flow restrictor with at least one pressure gauge coupled to the regulatable air input. The kit includes media embodying instructions that specify correlating an amount of flow to a degree, rate, or amount of leakage past the non-contact seal.

Abstract: 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.