Abstract: Systems and methods are provided for determining an exposure temperature in an engine. One or more particles filtered from lubrication fluid of an engine may be analyzed. The chemical composition of filtered particles may be compared to reference data which includes a relationship between chemical composition and exposure temperature. An estimate of the exposure temperature may be determined. An output may be generated based on the exposure temperature.

Abstract: An oil pressure switch, which is connected in an oil path of a piston oil cooling jet to diagnose oil pressure, includes an upper body and a lower body, in which a plunger vertically moves according to oil pressure; a fixing plate that is disposed between the upper body and the lower body; a moving plate that selectively contacts a fixing plate according to movement of the plunger; a spring that generates an elastic force in a direction in which the moving plate selectively contacts the fixing plate; an output terminal that outputs an output signal according to contact between the moving plate and the fixing plate; and a parallel resistor that is electrically connected with the output terminal and electrically connected with a control resistor of a controller.

Abstract: A sliding bearing assembly includes at least one sliding bearing element which is arranged in a bearing receptacle that is part of a bearing structure having at least one sensor connected to a data transmission device for data transmission to a receiver of the data, and to an energy generating device. The energy generating device supplies the sensor and/or the data transmission device with electrical energy in a self-sufficient manner, and may include a piezo element which is pretensioned under pressure. In some embodiments, the energy generating device is the sensor.

Abstract: A measuring device (2) draws out an aerosol air mixture from the working chamber (4) of the machine and feeds it to an optical sensor unit with an optical emitter (15) and an optical receiver (17). A compressed air jet pump (8) includes a compressed air feed (26), a compressed air nozzle (32), a preferably funnel-shaped pressure discharge channel and an underpressure region (10), with the compressed air nozzle (32) having an outlet direction oriented substantially in the direction of the pressure discharge channel. The compressed air feed (26) is connected to a compressed air source. A suction line is connected between the working chamber (4) and the underpressure region (10). The optical sensor unit has an optical passage between the optical emitter (15) and the optical receiver (17) oriented substantially perpendicular to the outlet direction of the compressed air nozzle (32) and leads through the underpressure region.

Abstract: The invention relates to a unit for simulating the pressure and temperature conditions of an air flow drawn in by a reciprocating internal combustion engine (1) at a height above sea level, corresponding to the operating height of said reciprocating internal combustion engine (1). According to the invention, the unit comprises at least: (a) a radial inward-flow turbine (2) for expanding an air flow towards the pressure and temperature of the air drawn in by the reciprocating internal combustion engine; (b) a first container (4) and (c) a second container (5) connected to the first container (4) by means of at least a connection pipe (7) in order to balance the pressure between the two containers; (d) a centrifugal compressor (3); and (e) a vacuum pump (6) for maintaining a pressure equal to the pressure of the air flow drawn in by the reciprocating internal combustion engine (1).

Abstract: A fault sensing device for a vehicle includes a time measuring section functioning as a sleep mode while power to a controller is off. The time measuring section can measure a stop time of an engine, and can transmit information on the stop time to the controller when power to the controller is on. When the controller determines that a stop time of the engine is a predetermined time, the controller performs fault sensing for an oil pressure switch.

Abstract: A state of an oil pressure is determined based on combination of activation of an oil pressure switch and information of the temperature detected by a temperature sensor and an engine speed detected by an engine speed sensor such that determination of the oil-pressure state is conducted from a lower engine-speed range in a case in which the temperature detected by the temperature sensor is relatively low, compared with a case in which the temperature detected by the temperature sensor is relatively high. Accordingly, the oil-pressure state can be properly determined not only in a high engine-speed range but in a low engine-speed range, by utilizing the simple oil pressure switch activated to the conductive state in response to the oil pressure.

Abstract: A hydraulic control device for an internal combustion engine having a pressure level switch mechanism that switches the pressure level of the oil supplied to components of the engine between a high pressure level and a low pressure level is provided. The hydraulic control device has a detecting section and a determining section. The determining section outputs a command signal instructing to switch the pressure level of the oil to the high pressure level to the pressure level switch mechanism and determines that the pressure level switch mechanism has a malfunction on condition that, after the command signal has been output, the pressure of the oil detected by the detecting section is smaller than a high-pressure-level switching malfunction determination value.

Abstract: A fault sensing device for a vehicle includes a time measuring section functioning as a sleep mode while power to a controller is off. The time measuring section can measure a stop time of an engine, and can transmit information on the stop time to the controller when power to the controller is on. When the controller determines that a stop time of the engine is a predetermined time, the controller performs fault sensing for an oil pressure switch.

Abstract: An oil mist detector test rig including an oil container, an aerosol generator, an oil mist detector, and a collection unit. The aerosol generator generates fluid aerosol in the oil container. The oil mist detector is configured to provide a first reading based on a concentration of the generated fluid aerosol in the oil container. Additionally, the collection unit is configured to provide a second reading based on the concentration of the generated fluid aerosol in the oil container.

Abstract: A state of an oil pressure is determined based on combination of activation of an oil pressure switch and information of the temperature detected by a temperature sensor and an engine speed detected by an engine speed sensor such that determination of the oil-pressure state is conducted from a lower engine-speed range in a case in which the temperature detected by the temperature sensor is relatively low, compared with a case in which the temperature detected by the temperature sensor is relatively high. Accordingly, the oil-pressure state can be properly determined not only in a high engine-speed range but in a low engine-speed range, by utilizing the simple oil pressure switch activated to the conductive state in response to the oil pressure.

Abstract: A method is provided to diagnose a failure of an OPCJ valve of an internal combustion engine. The OPCJ valve is located in an auxiliary line connecting an engine lubrication line to at least an oil jet for squirting lubricating oil from the engine lubrication line towards a piston surface. The method provides for monitoring the pressure variation in the engine lubrication line due to a switching signal sent to the OPCJ valve.

Abstract: An improved method for detection of engine faults especially suited for use on ships. The method is in particular related to the detection of a fault in an internal combustion engine having within the housing a crankshaft connected to a piston. The method includes determination of a pressure difference between the housing and the area outside the housing. If comparison of the pressure difference with a fault indicating pressure difference limit shows that the pressure difference is greater than the fault indication pressure difference limit then the presence of the fault is indicated. According to the method is in the pressure difference determined by comparing the pressure existing in the housing with the pressure of the area outside the housing, while attenuating pressure changes of the area outside the housing, so that pressure changes having a duration equal to or less than a defined fault characteristic period of time are supposed.

Abstract: One embodiment of the present invention provides an anomaly detection apparatus for an automatic transmission, the automatic transmission including an electrically-operated oil pump that is rotationally driven by an electric motor, including: a solenoid that is capable of switching a line pressure of a hydraulic control circuit that controls the automatic transmission between a high pressure and a low pressure; and an oil pressure switch that is turned on or off in response to the line pressure, wherein, in response to an oil pressure command value, whether the oil pressure switch is turned on or off according to the oil pressure command value is determined, and the determination and a load state of the electrically-operated oil pump are compared so as to distinctively determine in which of the solenoid and the oil pressure switch, an anomaly has occurred.

Abstract: A control module may include a cam phaser control module, a cam phaser oil pressure determination module, and a system oil pressure prediction module. The cam phaser control module may control an oil control valve (OCV) to control an oil flow to a cam phaser. The cam phaser oil pressure determination module may be in communication with the cam phaser control module and may determine a first engine oil pressure at a location between the OCV and the cam phaser when the OCV is in a open position. The system oil pressure prediction module may determine a second engine oil pressure at a location between the OCV and an oil pump outlet based on the first engine oil pressure.

Abstract: A method of monitoring pressure of oil that is implemented within an internal combustion engine includes determining an expected oil pressure value based on engine operating conditions and monitoring an actual oil pressure value based on a signal generated by an oil pressure sensor. A difference between the expected oil pressure value and the actual oil pressure value is calculated and is compared to a threshold difference. A diagnostic trouble code is generated when the difference exceeds the threshold difference.

Abstract: A control module may include a cam phaser control module, a cam phaser oil pressure determination module, and a system oil pressure prediction module. The cam phaser control module may control an oil control valve (OCV) to control an oil flow to a cam phaser. The cam phaser oil pressure determination module may be in communication with the cam phaser control module and may determine a first engine oil pressure at a location between the OCV and the cam phaser when the OCV is in a open position. The system oil pressure prediction module may determine a second engine oil pressure at a location between the OCV and an oil pump outlet based on the first engine oil pressure.

Abstract: The test equipment of engine motoring of the present invention includes a conveying mechanism (30) that carries in and carries out an engine to and from a test position, a fixing mechanism (40) that fixes the engine carried in to the test position, a coupling mechanism (60) that directly couples an electrical motor (50) to the engine and can detect a drive torque, an encoder (70) that generates a pulse signal as an operating standard in synchronism with rotation of the electrical motor, a plurality of detection units (80 through 130) that are driven to reciprocate so as to be connected to and disconnected from or approach and separate from the engine positioned at the test position and detect a plurality of operating state quantities, a control means (200) for various driving controls, and a judging means (200) for judging whether the engine is normal by comparing information obtained by the plurality of detection units with standard information obtained in advance.