Embodiments provide a malfunction monitoring and early warning system which can learn the determined malfunction data. The malfunction monitoring and early warning system may be used in connection with engines of different fields such as industrial engines, wind turbine engines, rail transport engines. The malfunction monitoring and early warning system ensures early detection of malfunction, required maintenance, and early warning determination by monitoring the temperature, vibration, and speed information of the engine monitored by the system.

A PTC thermistor module for a temperature control device may include at least one PTC thermistor element. The PTC thermistor element may include an upper side and an underside facing away from the upper side. The upper side and on the underside may be respectively applied in a heat-exchanging manner with a heat-conducting plate. An edge side, connecting the upper side and the underside with one another in an edge-side manner, of at least one of the PTC thermistor elements, may be applied to a heat-conducting element, which has a thermal conductivity of at least 5 W/mK. A temperature control device may include at least one such PTC thermistor module.

A turbine temperature estimation system controls a valve in a cooling passage to control the flow rate of cooling air supplied to a turbine component on the basis of its temperature. The system includes a coating layer formed on a surface of a component of the gas turbine; a measuring unit to supply an electric current to the coating layer and to measure a change in a resistance value of the coating layer; and a controller to estimate a temperature of the coating layer on the basis of the resistance value. The coating layer includes a heat shielding material and a resistive material whose resistance value changes with temperature. A cooling passage supplies cooling air to cool the turbine component, and the controller controls an opening of the cooling passage according to a voltage value of the coating layer.

An oil temperature sensor diagnostic device is configured to detect an abnormality in an oil temperature sensor provided in a vehicle, the vehicle including the oil temperature sensor configured to detect an oil temperature of a lubricant of an engine, and an idle-stop controller configured to execute an idle-stop control. The oil temperature sensor diagnostic device includes: a diagnostic value setting module configured to set a diagnostic value that is increased according to an elapsed running time; and an abnormality determination module configured to determine an abnormality of the oil temperature sensor in a case in which a rise in the oil temperature computed on a basis of an output of the oil temperature sensor is small compared to an amount of increase in the diagnostic value.

A reactor is provided which can be reduced in size, can prevent falling off of the temperature sensor and can make accurate temperature detection. The reactor comprises: an annular core 10; a resin member 20 covering a periphery of the annual core 10; a coil 5 attached to an outer circumference of the resin member 20; and a temperature sensor 9 inserted into a gap between the resin member 20 and the coil 5. The temperature sensor 9 has a columnar temperature detection portion 9a, and at least a part of the temperature detection portion 9a is sandwiched by the resin member 20 and the coil 5 in close contact.

The vehicle driving system capable of performing control of switching between automatic driving by a vehicle and manual driving by a driver, includes: a temperature monitoring section configured to monitor a temperature of an automatic driving ECU which controls the automatic driving; and a control section configured to control, on the basis of the temperature of the automatic driving ECU, an operation for prompting the driver to perform the switching to the manual driving during the automatic driving.

In a motor temperature estimating device including: a polyphase motor 1 having a first phase coil, a second phase coil and a third phase coil; current sensors; a determination section that determines whether or not the polyphase motor is rotating; and a transformation section that transforms a first phase output signal from the first phase current sensor, a second phase output signal from the second phase current sensor, and a third phase output signal from the third phase current sensor to output a post-transformation output signal, the post-transformation output signal is inputted to a first temperature estimation section that estimates the temperature of the polyphase motor during rotation, and the first phase output signal, the second phase output signal and the third phase output signal are inputted to a second temperature estimation section that estimates the temperature of the polyphase motor during stop.

An apparatus and method are provided for controlling a high voltage battery within vehicle. The apparatus monitors states of a first temperature sensor and a second temperature sensor mounted within a battery pack and calculates a replacement temperature that corresponds to the faulty temperature sensor using a temperature deviation within the battery pack for each ambient temperature of the battery when a faulty temperature sensor of the first temperature sensor and the second temperature sensor is detected. The replacement temperature is then used to operate the battery, and thus the stability of the battery control is improved even though the temperature sensor of the battery fails.

A temperature measurement system includes first and second temperature measurement sections for a plurality of small regions, a temperature deviation calculation section configured to obtain a temperature deviation between a first measured temperature and a second measured temperature, change rate calculation sections configured to obtain a first temperature change rate in the first measured temperature and a second temperature change rate in the second measured temperature, representative change rate calculation sections configured to obtain a representative change rate relating to the first temperature change rate and the second temperature change rate for each of the small regions, and change rate abnormality determination sections configured to compare the representative change rate with the first temperature change rate and the second temperature change rate used in calculation of an abnormality deviation exceeding a temperature deviation threshold value and determine whether or not the first and second temperature measurement sections are abnormal.

An electric work vehicle includes a hydraulic actuator and a pump configured to supply hydraulic fluid to the hydraulic actuator, with the pump being operable within an operating speed range extending between a minimum operating speed value and a maximum operating speed value. Furthermore, the electric work vehicle includes a sensor configured to capture data indicative of a temperature of the hydraulic fluid and a controller communicatively coupled to the sensor. As such, the controller is configured to monitor the temperature of the hydraulic fluid relative to a predetermined minimum fluid temperature as the pump is operating within the operating speed range. In addition, the controller is configured to adjust the operating speed range of the pump by increasing at least one of the minimum operating speed value or the maximum operating speed value when the monitored temperature of the hydraulic fluid falls below the predetermined minimum fluid temperature.