The invention concerns a system for monitoring physical and/or analogue parameters relative to the parts of an engine, said system comprising at least one electronic control unit (30.sub.a) configured to call up data, via at least one antenna (20a), from a surface acoustic wave sensor located on one of said parts, characterised by the fact that:—the engine (M) is compartmentalized, each compartment (Ma, . . . , Mf) comprising a plurality of mobile or fixed parts of which the physical and/or analogue parameters need to be monitored, —each of these parts to be monitored is provided with a surface acoustic wave sensor (101a, 102a, 103a, . . . , 101f, 102f, 103f), each of said sensors having a distinct resonance frequency specific to it,—an antenna (20a, . . . , 20f) is installed inside each of the compartments (Ma, . . . , Mf), each of said antenna being connected, alone or in pairs, to an electronic control unit (30a, . . . , 30f, 30ab, . . . , 30ef),—each antenna (20a, . . . , 20f) is controlled by the electronic control unit (30a, . . . , 30f, 30ab, . . . , 30ef) to which it is connected, to simultaneously emit a plurality of distinct frequencies close to the resonance frequencies of the sensors (101a, 102a, 103a, . . . , 101f, 102f, 103f) which are located in the engine compartment (Ma, . . . , Mf) of said antenna, so as to simultaneously communicate with all of these sensors (101a, 102a, 103a, . . . , 101f, 102f, 103f).

The invention relates to a temperature measuring device for measurement of the external temperature of the ambient air in a vehicle, wherein the temperature measuring device is disposed in a flow path of an air flow and the air flow can be generated from ambient air of the vehicle both through speed-dependent wind resistance of the vehicle and/or wind and also through a compressor unit disposed in the flow path.

A method and an electronic device monitors the temperature of power electronics having at least one power transistor. In the method, during active operation of the power transistor, the drain-source voltage and the drain current of the transistor are measured and are used to calculate an on-state resistance. An instantaneous junction temperature of the power transistor is determined for monitoring the temperature on the basis of a predefined assignment. The predefined assignment is automatically recalibrated for future operation of the power transistor by automatically measuring in each case a pair of values of the instantaneous on-state resistance and an instantaneous temperature of the power electronics in each case at a plurality of different times outside active operation. These temperatures are measured at a location spatially spaced apart from the junction of the power transistor and are assumed to be junction temperatures prevailing at the respective time. The assignment is then updated according to these pairs of values.

If an abnormality detecting unit detects an output abnormality of an internal temperature sensor, a discharge control unit obtains the amount of discharge (a limit value L of gas flow rate F) on the basis of an ambient temperature measured by an ambient temperature sensor, and controls the discharge of fuel gas on the basis of the obtained amount of discharge.

An electric machine includes a stator having a winding having a first plurality of conductors, and at least one temperature sensor arrangement including a temperature sensor for detecting the temperature in the region of the winding. The ends of at least one part of the first plurality of conductors protrude from the winding. One part of said ends is connected to an axial or radial interconnection ring placed on the winding that includes a second plurality of conductors. The temperature sensor arrangement is arranged on or in the interconnection ring and the temperature sensor is thermally coupled to at least one conductor of the second plurality of conductors.

The present invention relates to a temperature sensor (1) for an engine of a vehicle, comprising: a casing (1) containing a circuit board (14) and traversed by at least one pair (2) of wires (3) provided with terminals (8), the terminal (8) being made up of a portion (804) crimped onto a conductor (5) arranged in the casing (1), a connector (101) comprising at least one metal insert (10) ensuring the electrical connection with the circuit board (14), where the casing comprises at least one flange (9) for holding the terminals (8), the terminals (8) being folded.

Fuel tank (1) having: a wall (12) defining an internal volume (20) of the tank, and a temperature sensor (4) located inside the internal volume of the tank and at least partially enveloped with a material (21) having a thermal diffusivity comprised between 2×10.sup.−7 and 2×10.sup.−5 m.sup.2/s at 20° C. The temperature sensor measure an internal tank temperature, such as a vapor dome temperature.

A system for determining temperature includes a housing having an interior cavity defined by at least one electrically conductive wall having an inside surface exposed to the interior cavity, an outside surface opposite the inside surface, and a single sensor feed through hole defined from the inside surface to the outside surface. A temperature sensor is mounted to the inside surface, including an isolated single wire extending from the sensor to the outside surface via the single sensor feed through hole. The wall provides a first voltage signal responsive to a temperature change within the interior cavity to an electronic device, and the isolated single wire provides a second voltage signal, different from the first, responsive to the temperature change, to the electronic device such that the electronic device determines an interior cavity temperature based on a signal determined from the first and second voltage signals.

A half-bridge module having two switching units, each of which includes multiple transistors connected in parallel and/or in series, in particular IGBTs or MOSFETs. The transistors are arranged on a first substrate. The half-bridge module has a temperature sensor matrix having a plurality of temperature sensors, and the temperature sensors are thermally connected to the transistors at least in some regions. A temperature sensor matrix is also provided.

Disclosed is a method for determining a rotor temperature value T.sub.Rot for an electric machine, such as an electric motor. In one example, the method includes calculating a support value P.sub.cu2_Trot using a rotor temperature value T.sub.rot that is determined with a temperature model and a motor current value I.sub.sdq. An auxiliary value P.sub.cu2_Ref can be determined using a motor torque T.sub.rq and a motor slip value ω.sub.slip. The support value P.sub.cu2_Trot can be linked with the auxiliary value P.sub.cu2_Ref in order to obtain a corrected rotor temperature value Delta.sub.Trot. Furthermore, the temperature model can be modified using the corrected rotor temperature value Delta.sub.Trot in order to obtain a corrected temperature model. Finally, the rotor temperature value T.sub.Rot can be determined using the corrected temperature model.