PROBLEM TO BE SOLVED: To provide a technique for suppressing an increase in the flow amount of a cooling medium.SOLUTION: A vehicular cooling system includes a circuit in which the cooling medium flows for cooling a cooled object, two motor pumps arranged in series in the circuit for forcibly feeding the cooling medium, a rotational frequency sensor for detecting the rotational frequency of at least one of the two motor pumps, and a controller for controlling the rotational frequency of each motor pump. When the rotational frequency of the one motor pump detected by the rotational frequency sensor is lower than a predetermined lower limit value, the controller increases/reduces the rotational frequency of the one motor pump and increases/reduces the rotational frequency of the other motor pump so that the flow amount of the cooling medium forcibly fed by the two motor pumps becomes a predetermined flow amount.SELECTED DRAWING: Figure 5

    【課題】冷却媒体の流量の増加を抑制することができる技術を提供する。【解決手段】車両用冷却システムは、冷却対象を冷却する冷却媒体が流れる循環路と、前記循環路に直列で配置されて冷却媒体を圧送する2個の電動ポンプと、前記2個の電動ポンプのうち少なくとも一方の電動ポンプの回転数を検出する回転数センサと、前記各電動ポンプの回転数を制御するコントローラと、を備えている。前記コントローラは、前記回転数センサが検出する一方の前記電動ポンプの回転数が所定の下限値より低くなった場合に、一方の前記電動ポンプの回転数を増減させるとともに、前記2個の電動ポンプが圧送する冷却媒体の流量が所定流量になるように他方の前記電動ポンプの回転数を増減させることを特徴とする。【選択図】図5


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    Title :

    VEHICULAR COOLING SYSTEM


    Additional title:

    車両用冷却システム


    Contributors:

    Publication date :

    2018-04-19


    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 / B60K Anordnung oder Einbau von Antriebseinheiten oder von Kraft- bzw. Drehmomentübertragungen in Fahrzeugen , ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES / B60W CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION , Gemeinsame Steuerung oder Regelung von Fahrzeug-Unteraggregaten verschiedenen Typs oder verschiedener Funktion



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