To control the temperature of oil to an appropriate value when a mechanical oil pump driven by the power of an output shaft is mounted.SOLUTION: A vehicle cooling device 1 includes: a T/M oil circuit 20 having a mechanical oil pump 21 for pressure-sending T/M oil to motors 3 and 4 which is a power source; an inverter cooling circuit 10 having an electric water pump 11 for discharging cooling water for cooling an inverter 2; a heat exchanger 12 for carrying out heat exchange between the T/M oil and the cooling water; and a control unit for controlling output of the electric water pump 11. The mechanical oil pump 21 is a pump driven by the power of an output shaft of the vehicle, and the control unit includes means for executing control to reduce a discharge amount of the electric water pump 11 when the temperature of the T/M oil is lower than a predetermined value, and means for executing control to change the discharge amount of the electric water pump 11 in proportion to a vehicle speed when the temperature of the T/M oil is a predetermined value or higher.SELECTED DRAWING: Figure 1

    【課題】出力軸の動力により駆動する機械式オイルポンプを搭載した場合にオイルの温度を適切な値に制御すること。【解決手段】車両用冷却装置1は、動力源となるモータ3,4へT/Mオイルを圧送する機械式オイルポンプ21を有するT/Mオイル回路20と、インバータ2を冷却するための冷却水を吐出する電動ウォータポンプ11を有するインバータ冷却回路10と、T/Mオイルと冷却水との間で熱交換を行う熱交換器12と、電動ウォータポンプ11の出力を制御する制御部と、を備え、機械式オイルポンプ21は、車両の出力軸の動力により駆動するポンプであり、制御部は、T/Mオイルの温度が所定値未満の場合に電動ウォータポンプ11の吐出量を減らす制御を実施する手段と、T/Mオイルの温度が所定値以上の場合に電動ウォータポンプ11の吐出量を車速に比例して変化させる制御を実施する手段と、を有する。【選択図】図1


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    Title :

    VEHICLE COOLING DEVICE


    Additional title:

    車両用冷却装置


    Contributors:

    Publication date :

    2019-06-24


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / B60K Anordnung oder Einbau von Antriebseinheiten oder von Kraft- bzw. Drehmomentübertragungen in Fahrzeugen , ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES



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