684results about "Temperature measurement in motors" patented technology

A method and system for temperature conditioning of engine intake air by use of controllable intercooler which consists of an active thermoelectric device and a controllable valve system which optimally directs the path of airflow through a plurality of chambers in response to signals from a controller in order to optimally provide temperature conditioned air to the engine. System features temperature storage isolated from heat soaked engine components allowing immediate and efficient conditioning of airflow into an internal combustion engine. Intelligent control of this device removes parasitic power drains during high demand situations.

A device for detecting the pressure and the temperature in the intake tube of an internal combustion engine, including a temperature sensor, a pressure sensor and a substrate each of which are secured in a housing with as little stress as possible with the pressure sensor secured on a substrate together with an evaluation circuit. The temperature sensor measures precise temperature measurement. In order to introduce a fluid medium that is under pressure, a neck part is secured to the housing and an adapter is joined both to the substrate and to the neck part via adhesive seals that decouple mechanical stress from the pressure and temperature detectors.

A method and system for determining a temperature of a working gas passing through a passage to a turbine section of a gas turbine engine. The method includes identifying an acoustic frequency at a first location in the engine upstream from the turbine section, and using the acoustic frequency for determining a first temperature value at the first location that is directly proportional to the acoustic frequency and a calculated constant value. A second temperature of the working gas is determined at a second location in the engine and, using the second temperature, a back calculation is performed to determine a temperature value for the working gas at the first location. The first temperature value is compared to the back calculated temperature value to change the calculated constant value to a recalculated constant value. Subsequent first temperature values at the first location may be determined based on the recalculated constant value.

A monitoring system includes a plurality of modules to sense temperature and vibrations of a motor assembly, a hub computer to collect the sensed temperature and vibrations, and an analyzer computer to analyze the collected temperature and vibrations. The modules contain detectors that measure a temperature and vibrations in three axes of the motor assembly, a transceiver integrated circuit that measures a die temperature of the transceiver integrated circuit, a microcontroller integrated circuit that self-adjusts its clock pulses, and a memory that stores parameters set for the operation of the modules. The microcontroller integrated circuit and the memory are configured to check parameters corruption upon transferring the parameters from the memory to the microcontroller integrated circuit and prior to utilizing by the microcontroller integrated circuit. The modules further have an enclosure that is compact in size and that can withstand severe industrial environment.

In a temperature sensor having a temperature sensitive element, a sheath pin connected to the temperature sensitive element, and a cover case. The cover case, filled with a filler, accommodates the temperature sensitive element and the sheath pin. A hardening temperature of the filler is not less than an actual usage environment of the temperature sensor. Another temperature sensor has a temperature sensitive element exposed at a high temperature of not less than 750° C., a thermistor element, a sheath pin, an anti-vibration filler, and a metal cover case fixed to an end part of the sheath pin. The metal cover case accommodates the sheath pin and the thermistor element. The filler is made of a porous insulation material having a pore ratio within a range of 30 to 70% and filled around the thermistor element in the metal cover case.

A probe that includes both a temperature transducer and a pressure sensing port is adapted to be mounted upon and extend into the intake housing of a gas turbine engine. The probe is operative to provide air temperature and pressure data to an engine controller for the gas turbine engine.

The temperature of a stator coil is measured by a temperature sensor (14), amplified by a stator coil temperature amplifier (21), and transmitted to a vehicle control section (23). Further, motor cooling oil (17) for cooling the outer periphery of the stator cools the stator coil (16) along an end coil section of the stator coil (16). The temperature of the motor cooling oil raised by the stator coil (16) is measured by a temperature sensor (15) and transmitted also to the vehicle control section (23) via a motor cooling oil temperature amplifier (22). The vehicle control section (23) estimates the temperature of a rotor magnet based on a thermal model (relationship between temperature, a heat production amount, and heat resistance) of the motor cooling oil, the stator coil, and the rotor magnet by using the motor cooling oil temperature and the stator coil temperature as input values and sends a control instruction to a motor control section (24).

A multi-element thermocouple circuit includes at least two temperature measuring junctions. A first temperature measuring junction is formed by first and second thermoelements, each of the first and second thermoelements being formed of a noble metal or a noble metal alloy. The second temperature measuring junction, which connects to the distal end of the first thermoelement, is formed by third and fourth thermoelements, neither of which is formed from a noble metal or a noble alloy. A fifth thermoelement connects to the distal end of the second thermoelement and is formed of the same material as the fourth thermoelement. During operation, the distal ends of the third and fourth thermoelements define therebetween a first voltage difference corresponding to a temperature at the second temperature measuring junction, while the distal ends of the fourth and fifth thermoelements define a second voltage difference from which a temperature at the first temperature measuring junction may be obtained.

An apparatus for detecting a change of a physical quantity by means of a conductor structure having a processor for applying a defined supply signal to the conductor structure so as to effect a current flow through the conductor structure, the current flow being changeable by the physical quantity, and a detector for detecting a magnetic field caused by the current flow through the conductor structure by means of a magnetoresistive element allocated to the conductor structure, a change of the physical quantity being associated with a change of the detected magnetic field.

A probe assembly in a gas path of a gas turbine engine comprises a support casing having a first wall with throughbores. The support casing has a base mounted to a gas turbine engine proximate the gas path. The first wall extends radially into the gas path. The throughbores are provided at positions corresponding to different gas path radii. Wire units each have an end directed to an own throughbore, and an end exiting through an outlet of the casing and connected to a processing unit. Retaining members in the casing constrain movement of the wire units. Probes for each of the throughbores are configured for measuring the temperature/pressure. The probes each have a connector end received in a non-integral relation in the throughbore and connected to an associated wire unit, whereby the probes in the non-integral relation with the support casing measure parameters in the gas path.

A pressure sensor device having a temperature sensor includes a pressure sensor, a temperature sensor, a sensor casing for accommodating the pressure sensor and a connector pin for electrically connecting the pressure sensor and an outside circuit, and a port mounted on the sensor casing and having a pressure introduction port for introducing a measuring object to the pressure sensor. The temperature sensor is disposed in the pressure introduction port, and electrically connects to the connector pin through a lead wire. The lead wire with the temperature sensor is supported by a connection portion disposed between the connector pin and the lead wire. The lead wire has a buffer disposed between the lead wire and a part of the pressure introduction port for reducing a vibration of both the temperature sensor and the lead wire.

The invention provides a control strategy and a control system to control a gas sensor to a target operating temperature. It relies upon both feedback and model-based feedforward control systems to achieve and then maintain the sensor at the target operating temperature. The mechanization includes a gas sensor with a heating element in a feedstream. The control strategy employs a control system for the heating element that is based upon the target operating temperature, the temperature of the heating element, and an effect of the feedstream and mounting structure on the temperature of the sensor. The control strategy enables the control system to optimize the heating of a sensor during warm-up and steady state operations.

The invention relates to a method and a device for detecting failure of an exhaust temperature sensor. The method comprises steps: a corresponding relation between different engine rotation speeds and fuel injection quantities and calibration values of the exhaust temperature sensor is built; as for each time period in continuous multiple time periods with first preset lengths, whether the absolute value of the difference between the average value of exhaust temperature sensor measurement values and the average value of the calibration values is larger than a preset threshold is judged, and when the number of time periods during which the absolute value is larger than the preset threshold is larger than a preset number, the exhaust temperature sensor is judged to fail. According to the technical scheme provided by the invention, error detection on the measurement values of the exhaust temperature sensor during the overall working process can be realized; and compared with the prior art, whether the measurement values have deviation when the measurement values of the exhaust temperature sensor do not exceed the upper limit and the lower limit of measurement can be judged.

The invention relates to an electrical apparatus (100) comprising an electrically insulating body (110) housing at least two electrical connection elements (121, 122, 123), and a temperature sensor (200). According to the invention, the temperature sensor is received in a thermally conductive and electrically insulating support element (150) which is separate from said body and mounted inside said body, so as to extend between said electrical connection elements, set back from the outer faces of said body.

A sensor diagnostic method, such as to determine rationality of one of three temperature sensors used in an exhaust aftertreatment system, includes determining the temperature difference between the first and second sensor, determining the temperature difference between the second and third sensor, determining whether the temperature differences are within an acceptable threshold range and comparing the two temperature differences to determine which sensor is in error, if any.

A detection device for internal combustion engines exhaust gases post-treatment systems has a casing (2, 3) housing a circuit arrangement (21, 31) including humidity sensor means (32), for measuring the humidity of the gas. The circuit arrangement further comprises temperature sensor means (33) and pressure sensor means (22), for detecting a gas temperature value and a gas pressure value, respectively. The gas temperature value can be used for compensating the humidity value obtained through the humidity sensor means (32) and the pressure value can be used for deducing the clogging degree of a filter of the post-treatment system. Preferably the pressure sensor means (22) are housed in a first chamber (8) of the casing (2-3) while the humidity sensor means (32) and the temperature sensor means (33) are housed in a second chamber (10b) of the casing (2, 3).

Fuel injectors (10) for internal combustion engines are modified and equipped with fiber optic fuel pressure sensors (12) and fiber optic combustion pressure sensors (14). The combustion pressure sensors (14) are located in separate channels (26) formed in the fuel injectors with the lower portion (22) of the channels leading to the combustion chambers. Above the combustion pressure sensors (14) are fiber optic leads (24). In the preferred embodiments the sensors (46) are equipped with diaphragms (40) of novel shape (48) and employ multiple pairs of fibers (86, 88), temperature sensitive components (72, 74, 126) and novel compensation and status monitoring circuits (FIGS. 6, 9, 10, 14, 15, 18).