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    BELT BASED, CONTINUOUSLY-VARIABLE TRANSMISSION CONTROL DEVICE AND CONTROL METHOD
    2.
    发明公开
    BELT BASED, CONTINUOUSLY-VARIABLE TRANSMISSION CONTROL DEVICE AND CONTROL METHOD 有权
    无级变速器控制器上GURTBASIS和控制程序

    公开(公告)号：EP2426379A4

    公开(公告)日：2015-06-24

    申请号：EP09844012

    申请日：2009-04-30

    申请人： JATCO LTD ,  NISSAN MOTOR

    发明人： DOIHARA KATSUMI ,  KODAMA YOSHIHISA ,  YOSHIKAWA YASUAKI ,  NISHI MASAHIRO ,  KOYAMA KEISUKE ,  NAKAMURA KENTA ,  SAWANO KIYOTAKA ,  KAWAGUCHI HIDEMASA

    IPC分类号： F16H61/02 ,  F16H59/46 ,  F16H59/70 ,  F16H61/662

    CPC分类号： F16H61/66272 ,  F16H59/70 ,  Y10T477/624 ,  Y10T477/6242

    摘要： Provided are control device and method for a belt type continuously variable transmission which can improve control stability of secondary hydraulic pressure with the estimated accuracy of a belt slip condition during belt slip control ensured. The device has a primary pulley (42), a secondary pulley (43), and a belt (44), and a secondary hydraulic pressure controller (92) to determine command secondary hydraulic pressure by feedback control based on the deviation (¸) between target secondary hydraulic pressure and actual hydraulic pressure, and control the secondary hydraulic pressure to the secondary pulley (43). A belt type continuously variable transmission mechanism (4) includes a belt slip control means ( Figure 8 ) to estimate a belt slip condition by monitoring the phase difference (¸) between an oscillation component included in the actual secondary hydraulic pressure and an oscillation component included in the actual transmission gear ratio and control the actual secondary hydraulic pressure to decrease based on the estimation so that a predetermined belt slip condition is maintained. The secondary hydraulic pressure control unit (92) aborts feedback control of the secondary hydraulic pressure during belt slip control and controls the secondary hydraulic pressure by open control.

    CONTROLLER AND CONTROL METHOD OF BELT TYPE CONTINUOUSLY VARIABLE TRANSMISSION
    4.
    发明公开
    CONTROLLER AND CONTROL METHOD OF BELT TYPE CONTINUOUSLY VARIABLE TRANSMISSION 审中-公开
    控制器及控制方法可变齿轮UP GURTBASIS持续不断

    公开(公告)号：EP2426380A4

    公开(公告)日：2012-12-19

    申请号：EP09844016

    申请日：2009-04-30

    申请人： NISSAN MOTOR ,  JATCO LTD

    发明人： DOIHARA KATSUMI ,  KODAMA YOSHIHISA ,  YOSHIKAWA YASUAKI ,  NAKAMURA KENTA ,  SAWANO KIYOTAKA ,  NISHI MASAHIRO ,  KAWAGUCHI HIDEMASA ,  KOYAMA KEISUKE

    IPC分类号： F16H61/02 ,  F16H61/662

    CPC分类号： F16H61/66272 ,  Y10T477/624 ,  Y10T477/6242

    摘要： Provided is control device and method for a belt type continuously variable transmission which can reduce drive energy consumption by a decrease in belt friction when the estimated accuracy of belt slip condition is high and which can prevent the belt from greatly slipping during belt slip control when the estimated accuracy of belt slip condition is low. The device includes a primary pulley (42), a secondary pulley (43), and a belt (44) and controls gear ratio based on the running radius of the belt (44) on the pulley by controlling the primary oil pressure and the secondary oil pressure. A belt type continuously variable transmission (4) comprises a belt slip control means (step S3) for performing such control as to oscillate the secondary oil pressure, estimate the belt slip condition by monitoring the phase difference between an oscillation component included in the actual secondary oil pressure and an oscillation component included in the actual gear ratio, and then reduce the actual secondary oil pressure to maintain a predetermined belt slip condition, and a belt slip control permission determining means (step S2) for permitting belt slip control when a transmission rate as a change rate of gear ratio is less than a predetermined value.