PROBLEM TO BE SOLVED: To provide a four-wheel drive car that can improve accuracy in control current output by a control device in order to control a friction clutch, and to provide a control device therefor, the four-wheel drive car comprising: an engagement clutch and the friction clutch provided so as to sandwich a drive shaft in a path for transmitting drive force to an auxiliary drive wheel; and a control device that controls the engagement clutch and the friction clutch.SOLUTION: A control device 2 comprises: current detection means 21 that outputs a detection signal corresponding to the magnitude of an actual control current; target current value calculating means 22 that calculates a target current value being a target value for control current; and current control means 23 that controls a current output circuit 20 so that control current for the target current value calculated by the target current value calculating means 22 is output on the basis of a detection result of the current detection means 21. In a two-wheel driving state in which first and second friction clutches 62L, 62R are open, the current control means 23 performs zero-point correction for correcting a zero point of a control current output from the current output circuit 20.SELECTED DRAWING: Figure 1

    【課題】補助駆動輪への駆動力伝達経路において駆動軸を挟むように設けられた噛み合いクラッチ及び摩擦クラッチと、噛み合いクラッチ及び摩擦クラッチを制御する制御装置とを備えた四輪駆動車において、制御装置が摩擦クラッチを制御するために出力する制御電流の精度を高めることができる四輪駆動車、及びその制御装置を提供する。【解決手段】制御装置2は、実際の制御電流の大きさに応じた検出信号を出力する電流検出手段21と、制御電流の目標値である目標電流値を演算する目標電流値演算手段22と、電流検出手段21の検出結果に基づいて目標電流値演算手段22で演算された目標電流値の制御電流が出力されるように電流出力回路20を制御する電流制御手段23とを有し、電流制御手段23は、第1及び第2の摩擦クラッチ62L,62Rが開放された二輪駆動状態であるとき、電流出力回路20から出力される制御電流のゼロ点を補正するゼロ点補正を行う。【選択図】図1


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    Title :

    FOUR-WHEEL DRIVE CAR, AND CONTROL DEVICE FOR FOUR-WHEEL DRIVE CAR


    Additional title:

    四輪駆動車、及び四輪駆動車の制御装置


    Contributors:

    Publication date :

    2018-04-19


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    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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