A temperature sensor for a motor vehicle is disclosed. The temperature sensor includes a temperature-sensitive element, two electrical wires connecting the temperature-sensitive element to an electrical connector, an insulating sheath surrounding the two electrical wires, a protective endpiece including a closed end in which the temperature-sensitive element is housed, and a fixing means through which the insulating sheath passes. The fixing means has a threaded element to be screwed into a threaded orifice provided in a vehicle engine interface element to fix the temperature sensor to the engine interface element and a stop fixed to the insulating sheath. The stop surrounds the insulating sheath and provides sealing between the inside of the engine interface element and the outside, the threaded element being capable of rotating with respect to the stop. The stop comprises at least one lug that goes into a slot provided in the engine interface element to prevent the temperature sensor from rotating with respect to the engine interface element.

A system for diagnosing a misfire of an engine includes a sensing unit including at least one sensor for detecting at least one detection value associated with an operation of the engine, and an electronic control unit configured to determine whether a misfire of the engine due to exhaust valve leakage has occurred based on the detection values from the sensing unit, and perform an operation corresponding to the misfire due to exhaust valve leakage when the misfire due to exhaust valve leakage has occurred, wherein the electronic control unit a misfire code for exhaust valve leakage in a memory when the misfire due to exhaust valve leakage has occurred.

An engine system includes a delta pressure sensor configured to sense a pressure difference across an engine exhaust handling component and an electronic control system configured to determine a cold sensor condition permitting icing of the delta pressure sensor, determine a sensed pressure deviation condition indicative of deviation of the pressure difference sensed by the delta pressure sensor from a deviation limit, dynamically model a sensor heat transfer condition indicative of heating or cooling of the delta pressure sensor, determine that the sensor heat transfer condition is indicative of insufficient heating of the delta pressure sensor to mitigate icing of the delta pressure sensor, and determine an icing condition of the delta pressure sensor.

A temperature sensor includes a temperature sensing element transducing a sensed temperature into an electrical output signal and having a plurality of electrically conductive leads, a mineral insulated cable having a plurality of conductor wires enclosed by a metal outer sheath, and an electrically insulating element. The conductor wires are insulated inside the cable and extend beyond the outer sheath. The electrically insulating element insulates the conductor wires at least partially with respect to each other and with respect to the outer sheath. The electrically insulating element has a first opening receiving the conductor wires and a second opening receiving the temperature sensing element. The electrically conductive leads are connected to the conductor wires at a junction region located within the electrically insulating element. The electrically insulating element has an aperture extending up to the junction region.

A heating system includes at least one electric heater disposed within a fluid flow system and a control device that is configured to determine a temperature of the at least one electric heater based on a model, at least one fluid flow system input, and at least one heater input. The at least one heater input includes at least one physical characteristic of the heating system, the at least one physical characteristic includes at least one of a resistance wire diameter, a heater insulation thickness, a heater sheath thickness, a conductivity, a specific heat and density of the material of the heater, an emissivity of the heater and the fluid flow pathway, and combinations thereof. The control device is configured to provide power to the at least one electric heater based on the temperature of the at least one electric heater.

Embodiments of the present disclosure are directed towards various sensing devices. Embodiments may include an external housing and at least one conductor located included within and extending through an opening of the external housing. Embodiments may further include a spring clip included within the external housing and connected to the at least one conductor and a sensing element included within the external housing and connected to the spring clip.

Herein provided are methods and systems for detecting a high temperature condition of a gas turbine engine. A fuel flow to a combustor of the engine and a compressor outlet pressure of the engine are obtained. A ratio of the fuel flow to the compressor outlet pressure is determined. The ratio is compared to a threshold and a high temperature condition of the engine is detected when the ratio exceeds the threshold.

A temperature sensor includes a metal tube having an opening tip portion, a temperature sensing element for measuring a temperature, a pair of lead wires contacting with a surface of the temperature sensing element, an insulating support material for insulating the pair of lead wires from the metal tube, and a coating material for covering the temperature sensing element, lead tip portions of the pair of lead wires, and a tip surface of the insulating support material at the opening tip portion of the metal tube. The coating material has a property of not allowing measurement target gas to pass through and contains oxide and at least one of platinum, platinum alloy, and platinum-containing oxide that are dispersed in the oxide.

Thermocouple assemblies for high temperature applications are provided. The thermocouple assembly includes a protection tube; and a thermocouple probe within the protection tube. The thermocouple probe includes a cable connector at a first end and extending along a longitudinal axis to a free second end. A protective housing assembly, which extends around the thermocouple probe, extends from the cable connector to a tapered end of the protective housing assembly. The protective housing assembly includes an installation unit having a fixed transition joint. An oversheath extends between the installation unit and the tapered end. The free second end of the thermocouple probe extends along the longitudinal axis beyond the tapered end of the oversheath.

A system includes: a first temperature sensor configured to measure a first temperature of exhaust at a first location of an exhaust system of a vehicle; a second temperature sensor configured to measure a second temperature of exhaust at a second location of the exhaust system of the vehicle; a first analog to digital (A/D) converter configured to receive a first analog signal from the first temperature sensor, to sample the first analog signal to produce first samples, and to generate first digital values corresponding to the first temperature based on the first samples, respectively; and a second A/D converter a configured to receive a second analog signal from the second temperature sensor, to sample the second analog signal to produce second samples, and to generate second digital values corresponding to the second temperature based on the second samples, respectively.