PROBLEM TO BE SOLVED: To provide a thermostat monitor capable of discriminating a state that a temperature of engine cooling water is lowered due to open failure of the thermostat and a state that the temperature of the engine cooling water is lowered due to heat radiation of a heater core with a comparatively simple constitution by satisfying that difference between the temperature of the engine cooling water and a temperature of outside air is a prescribed value or more, in the thermostat in which the open failure of the thermostat is detected on the basis of the temperature of the engine cooling water detected by a temperature sensor disposed near an outlet portion of a cooling water passage in the engine.SOLUTION: A thermostat has temperature difference determination means detecting open failure of a thermostat in a case when temperature difference between a temperature of engine cooling water detected by a temperature sensor and a temperature of outside air is a prescribed value F or more.SELECTED DRAWING: Figure 2

    【課題】エンジン内冷却水経路の出口部近傍に配置された温度センサにより検出されたエンジン冷却水の温度に基づいて、サーモスタットの開故障を検出するサーモスタットモニタにおいて、エンジン冷却水の温度と、外気の温度との差が所定値以上となる条件を満たすことにより、比較的簡易な構成で、サーモスタットの開故障によるエンジン冷却水の温度の低下の状態と、ヒータコアの放熱によるエンジン冷却水の温度の低下の状態とを判別でき、確実にサーモスタットの開故障を検出することができるサーモスタットモニタを提供する。【解決手段】サーモスタットモニタは、温度センサにより検出されたエンジン冷却水の温度と、外気の温度との温度差が所定値F以上となる条件を満たす場合に、サーモスタットの開故障の検出をする温度差判定手段を有する。【選択図】図2


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    Title :

    THERMOSTAT MONITOR


    Additional title:

    サーモスタットモニタ


    Contributors:
    KIKUCHI TAKAYUKI (author) / TAKANO SUSUMU (author) / MIURA SHIN (author) / SAKATA GORO (author)

    Publication date :

    2017-09-28


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    F01P Kühlung von Kraft- und Arbeitsmaschinen oder Kraftmaschinen allgemein , COOLING OF MACHINES OR ENGINES IN GENERAL / B60H ARRANGEMENTS OR ADAPTATIONS OF HEATING, COOLING, VENTILATING, OR OTHER AIR-TREATING DEVICES SPECIALLY FOR PASSENGER OR GOODS SPACES OF VEHICLES , Anordnung oder Einbau der Heizung, Kühlung, Lüftung oder anderer Luftbehandlungsvorrichtungen für die Fahrzeugräume für Reisende oder Fracht



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