会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 10. 发明授权
    • Downshift control device for automatic transmission
    • 降档控制装置用于自动变速箱
    • US5897456A
    • 1999-04-27
    • US900149
    • 1997-07-28
    • Masahiro Takiguchi
    • Masahiro Takiguchi
    • F16H61/08F16H59/20F16H59/68F16H61/00F16H61/04F16H61/06F16H61/686
    • F16H61/061F16H2059/6807F16H2059/706F16H2061/0087F16H2061/0444F16H59/20F16H61/067F16H61/08F16H63/502Y10T477/693742
    • A downshift control device for an automatic transmission is provided in which the transmission is shifted down by releasing an oil pressure from a first engaging element that has been engaged while applying an oil pressure to a second engaging element that has been released. This downshift control device includes an applied pressure control actuator for controlling a pressure to be applied to the second engaging element, by supplying a pressurized oil to a back pressure chamber of an accumulator provided in an oil path to the second engaging element, and removing the pressurized oil from the back pressure chamber. This control actuator receives a first command to supply the pressurized oil to the back pressure chamber from the time when a downshift command is generated to a predetermined time or the time when a detected gear ratio starts being changed, and then receives a second command to remove the pressurized oil from the back pressure chamber until the detected gear ratio reaches a predetermined gear ratio just before completion of shifting. The control actuator then receives a third command to supply the pressurized oil to the back pressure chamber after the detected gear ratio reaches the predetermined gear ratio.
    • 提供一种用于自动变速器的降档控制装置,其中通过从已经接合的第一接合元件释放油压而使变速器向下移动,同时向已经释放的第二接合元件施加油压。 该降挡控制装置包括:施加的压力控制致动器,用于通过向设置在到第二接合元件的油路中的蓄能器的背压室供给加压油来控制施加到第二接合元件的压力, 加压油从背压室。 该控制执行器从发生降档命令时到预定时间或检测到的齿轮比开始改变的时间接收第一命令以将加压油供应到背压室,然后接收第二命令以移除 来自背压室的加压油直到检测到的齿轮比在刚好完成换档之前达到预定的齿轮比。 然后,控制执行器接收到第三命令,用于在检测到的齿轮比达到预定的传动比之后将加压油供应到背压室。