thermostat

thermostat
[1] A temperature sensitive device used in the cooling system of an engine to control the flow of coolant between the cylinder blockradiator. It is set into the engine block and shuts off the circulation of water until the temperature of the water reaches the point at which the thermostat is set to open. Because automotive internal combustion engines operate more efficiently when their temperature is maintained within narrow limits, the thermostat closes off the flow of coolant from the engine to the radiator until the engine has reached the desired operating temperature. Other thermostats are used in the electrical circuit of the vehicle heating system to control the amount of heat supplied to the passengers, in the manifold heat control system that preheats the air-fuel mixture going to the cylinders and in the automatic choke.
[2] Device which senses ambient temperature conditions and, in turn, acts to control a circuit.

Dictionary of automotive terms. 2015.

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  • thermostat — [ tɛrmɔsta ] n. m. • 1890; autre sens 1842; de thermo et du rad. gr. de istanai « fixer » ♦ Appareil ou dispositif qui permet d obtenir une température constante dans une enceinte fermée. Thermostat électrique. Four à thermostat. Régler le… …   Encyclopédie Universelle

  • Thermostat — Sm per. Wortschatz fach. (19. Jh.) Neoklassische Bildung. Neubildung zu gr. thermós warm und gr. statós stehend, feststehend . So benannt als ein Gerät, das die Temperatur auf einer bestimmten Höhe hält.    Ebenso nndl. thermostaat, ne.… …   Etymologisches Wörterbuch der deutschen sprache

  • Thermostat — Ther mo*stat, n. [Thermo + Gr. ? to make to stand.] (Physics) A device which automatically regulates temperature, or provides a signal used by another device to regulate temperature. The temperature sensitive signal may be electronic, as that… …   The Collaborative International Dictionary of English

  • Thermostāt — (griech., Thermoregulator), Gestell zum bequemen Erhitzen eines Körpers über der Lampe, speziell eine Vorrichtung zur Einhaltung einer bestimmten Temperatur. Erreicht die Quecksilbersäule in einem thermometerartigen Gefäß eine bestimmte Höhe, die …   Meyers Großes Konversations-Lexikon

  • Thermostat — Thermostāt (grch.), Vorrichtung, um Temperaturen längere Zeit unverändert zu erhalten …   Kleines Konversations-Lexikon

  • thermostat — 1831, from THERMO (Cf. thermo ) + STAT (Cf. stat) …   Etymology dictionary

  • thermostat — ► NOUN ▪ a device that automatically regulates temperature or activates a device at a set temperature. DERIVATIVES thermostatic adjective thermostatically adverb …   English terms dictionary

  • thermostat — [thʉr′mə stat΄] n. [ THERMO + STAT] 1. an apparatus for regulating temperature, esp. one that automatically controls a heating or cooling unit 2. a device that sets off equipment at a certain temperature, as a fire alarm system thermostatic adj.… …   English World dictionary

  • Thermostat — This article is about the temperature regulating device. For the French cooking oven temperature scale, see Gas Mark#Other cooking temperature scales. Honeywell s iconic The Round model T87 thermostat, one of which is in the Smithsonian …   Wikipedia

  • Thermostat — …   Wikipédia en Français

  • Thermostat — A device that monitors temperature and automatically maintains it at certain levels. In a human, a tiny part of the brain called the hypothalamus, located behind the eyes, serves as the thermostat. It can warm the body by causing it to shiver and …   Medical dictionary

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