An oil circulation system is configured to supply lubrication oil to a plunger pump. The oil circulation system includes an oil tank, and the oil tank is provided with an electric heater. The oil circulation system further includes: a main circulation circuit. Two ends of the main circulation circuit are configured to respectively communicate with an oil outlet and an oil inlet of the oil tank, and the main circulation circuit is provided with a power member; and an overflow valve, disposed on the main circulation circuit and located on an oil outflow side of the power member.

A fluid filtration system may include a fluid filter assembly that includes a filter element configured to filter a fluid and a sensor probe incorporated into the fluid filter assembly. The sensor probe may include a chemically reactive material sensitive to at least one property of the fluid and at least a portion of the sensor probe may be exposed to the fluid.

An industrial machine including a sensor and a controller. The sensor is configured to sense a characteristic of a fluid of the industrial machine. Wherein the characteristic is indicative of a contaminant level. The controller has an electronic processor and a memory. The controller is configured to receive a signal from the sensor indicative of the contaminant level, compare the contaminant level to a threshold, and upon the contaminant level crossing the threshold perform at least one selected from a group consisting of output an alert, and commence a shutdown procedure of the industrial machine.

A fluid filtration system may include a fluid filter assembly that includes a filter element configured to filter a fluid and a sensor probe incorporated into the fluid filter assembly. The sensor probe may include a chemically reactive material sensitive to at least one property of the fluid and at least a portion of the sensor probe may be exposed to the fluid.

Systems, apparatuses, and methods are provided for implementing a system for providing a breather for a reservoir. The system includes a breather including a housing a dehumidifying element therein. The system further includes an operational sensor positioned within the housing, the operational sensor configured to output a sensor signal indicative of a measured operational parameter of the breather, and an expansion pack coupleable to the housing, the expansion pack is configured to receive the sensor signal indicative of the measured operational parameter and to transmit at least one of the measured operational parameter or a representation thereof. The system includes a control unit communicatively coupleable to the expansion pack having a processor, a display unit, and a storage. The processor executes a control application configured to receive the at least one of the measured operational parameter or representation thereof.

A fluid condition monitoring device includes a sensing assembly including a sensor and a transducer, the sensor to sense a property of the fluid and the transducer to apply a test signal to the fluid and receive a return signal from the fluid; a control assembly coupled to the sensing assembly, the control assembly including a controller and an input/output interface, the controller interfacing with the transducer to generate fluid condition information in response to the return signal; and an interface assembly coupled to the control assembly, the interface assembly including a connection to the input/output interface to transmit the fluid condition information to an external system.

A vacuum dehydrator for removing water from lube oil including a vacuum chamber having a contaminated lube oil contact zone, a lube oil inlet for introducing a water contaminated lube oil into the contact zone, a hot air inlet for introducing a heated air stream into the contact zone, a decontaminated oil outlet fluidly connected to the decontaminated oil collection zone, and a wet air outlet fluidly connected to the disengagement zone. The lube oil inlet and the hot air inlet are configured to introduce and contact the water contaminated lube oil and the hot air in the contact zone, producing a dehydrated oil received into the decontaminated oil collection zone and a wet air stream containing entrained oil droplets received into the disengagement zone. The disengagement zone includes a tortuous divergent flow path traversing from a disengagement zone inlet to the wet air outlet.

An apparatus and method for determining lubrication contamination or deterioration in an engine or a lubricant system of an engine can include at least one sensor provided in the lubricant system. The sensor can sense an aroma of a lubricant or the air around the lubricant to measure a chemical composition or an aromatic. The sensed chemical composition or aromatic can be compared to a baseline or threshold to determine a particular contamination type or deterioration level of the lubricant.

A control device for an engine includes an electronic control unit configured to estimate a water content mixed in engine oil based on a history of a fuel injection amount during an operation of the engine and restrain freezing of water such that, when the water content thus estimated is a predetermined amount or more, the electronic control unit increases a mixing amount of the fuel into the engine oil as compared with a case where the water content thus estimated is less than the predetermined amount. The control device estimates the water content mixed in the engine oil as a function of an integrated value of water content while an oil temperature of the engine is less than a predetermined temperature.

An ECU is applied to a hybrid vehicle that is equipped with an internal combustion engine and a second motor-generator, which are configured to output a driving force for running. The hybrid vehicle is configured to run with the internal combustion engine in intermittent operation. Also, the ECU is configured to calculate an amount of dilution water that is mixed into oil in the internal combustion engine to dilute the oil. The ECU is configured to operate the internal combustion engine when the amount of the dilution water becomes larger than a first threshold.