A deterioration estimation device includes a storage device and an execution device. The storage device is configured to store mapping data defining a mapping that outputs an output variable indicating the degree of deterioration of oil when an input variable is input. The mapping includes, as the input variable, a color variable that is a variable indicating a color of the oil and a hydrogen ion variable that is a variable indicating a hydrogen ion concentration of the oil. The execution device is configured to execute an acquisition process that is a process of acquiring the input variable and a calculation process of inputting the input variable acquired through the acquisition process to the mapping to output a value of the output variable.

A system and method for verifying a mechanical system chip detection capability, the method including determining a slurry injection location in machinery according to a targeted obstruction in the machinery in relation to a target chip detector of the machinery, placing an injection tube through a machinery casing of the machinery, providing a slurry tube connected to the injection tube, the slurry tube containing a slurry comprising conductive chips and a lubricant, operating the machinery until the machinery meets one or more predetermined operating parameters, injecting the slurry into the machinery casing during operation of the machinery and after the machinery meets the one or more predetermined operating parameters, and monitoring the target chip detector for detection of the conductive chips during the operation of the machinery.

A removable oil filter system includes an oil filter mount, an oil filter element removably connected to the oil filter mount, an impending-bypass indicator connected to the oil filter mount and in fluid communication with an oil in the oil filter system, and a full-bypass indicator in fluid communication with the oil filter mount. The impending-bypass indicator is capable of reporting an impending-bypass condition of the oil filter system. The full-bypass indicator is capable of reporting a full-bypass condition of the oil filter system.

An estimation device includes mixed amount acquisition part 110, 201 configured to acquire a foreign matter mixed amount in a fluid that lubricates meshing elements G1 to G4, a fatigue damage degree estimation unit 202 configured to estimate fatigue damage degrees received by the meshing elements G1 to G4 per unit traveling of a vehicle based on the acquired foreign matter mixed amount, and a cumulative fatigue damage degree estimation unit 203 configured to estimate cumulative fatigue damage degrees of the meshing elements G1 to G4 based on the estimated fatigue damage degrees and at least one of a traveling distance and traveling time of the vehicle.

The present disclosure periodically monitors an oil condition through a temperature sensor installed in a driving motor of an in-wheel-type running gear, the generated torque of the driving motor, or the like and transmits oil condition information to a driver through a vehicle warning light.

A cause identifying device performs: determining that an operation of a transmission with a predetermined high load is a cause of oil temperature of hydraulic oil having been equal to or higher than the predetermined temperature when predetermined conditions that the transmission has operated with the predetermined high load in a target period immediately before the oil temperature of the hydraulic oil has been equal to or higher than the predetermined temperature and a vehicle acceleration in the target period has been equal to or higher than a predetermined acceleration value are satisfied; and determining that occurrence of a predetermined abnormality associated with a gear shifting device is the cause of the oil temperature of the hydraulic oil having been equal to or higher than the predetermined temperature when the predetermined conditions are not satisfied.

A control unit has as agitation mode in which a command is executed for a first switching valve so that the oil supply/discharge direction is switched so as to supply oil to a first oil supply/discharge port located at a low position and discharge oil from a second oil supply/discharge port located at a high position, whereby oil in an oil bath is agitated via a circulation pump from a low position to a high position is the oil bath; and a filter mode in which, after the agitation mode is executed, a command is executed for the first switching valve so that the oil supply/discharge direction is switched so as to discharge oil from the first oil supply/discharge port located at a low position and supply oil to the second oil supply/discharge port located in a high position, whereby impurities in the oil sent to a filter mechanism are filtered.

A sensor relating to the present invention includes: a first electrode; a second electrode; a first attracting portion positioned between the first electrode and the second electrode and configured to receive conductive abrasion powder contained in a detection region and attracted onto the first attracting portion; a sensing unit for sensing a change in electrical resistance between the first electrode and the second electrode caused by the conductive abrasion powder; and at least one second attracting portion positioned within the detection region and configured to attract the conductive abrasion powder contained in the detection region.

Systems and techniques that facilitate detecting fuel in oil, lube degradation, and foreign object contamination through optical and/or color characterization are provided. A signature component can generate a digital signature corresponding to a lubricant in a lubrication circuit of an engine. The digital signature can be based on optical or visual properties of a sensor array coupled to the lubrication circuit and exposed to the lubricant, wherein the optical or visual properties of the sensor array can depend on a health of the lubricant. An analysis component can characterize the health of the lubricant by comparing, via a machine learning algorithm, the digital signature with a baseline digital signature corresponding to a desired health-level of the lubricant. In some embodiments, a light emitter component can emit a first light onto the sensor array, and a light receiver component can receive a second light emitted by the sensor array in response to the first light. The signature component can then generate the digital signature based on the first light and the second light. In some embodiments, an image capture component can capture an image of the sensor array. The signature component can then generate the digital signature based on the captured image.

The present disclosure relates to a method and an apparatus for liquid condition assessment in a liquid lubrication system for a work system operable in at least two different modes, the method comprising measuring monitored liquid condition data, determining a current operating mode of the work system, then based on the current operating mode, selecting a corresponding model, modeling corresponding simulated liquid condition data based on the model, assessing the liquid condition by comparing the monitored liquid condition data with the simulated liquid condition data, and providing a normally distributed data set for the liquid condition assessment.