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公开(公告)号：US07033297B2
公开(公告)日：2006-04-25
申请号：US10845119
申请日：2004-05-14
CPC分类号： F16H61/061 , F16H61/067 , F16H61/686 , F16H2061/0034 , Y10T477/693738 , Y10T477/69377
摘要： A shift control apparatus for controlling shifting actions of an automatic transmission including a hydraulically operated frictional coupling device having a hydraulic cylinder which is supplied with a working fluid when the frictional coupling device is engaged, the shift control apparatus including a transient-hydraulic-pressure control device operable to control a transient value of a hydraulic pressure in the hydraulic cylinder according to an electric signal, upon releasing of the frictional coupling device, and an accumulator having a back-pressure chamber a back pressure of which is controllable, and an accumulator chamber connected to the hydraulic cylinder of the frictional coupling device and operable to control a transient value of the hydraulic pressure in the hydraulic cylinder, when the frictional coupling device is engaged with the working fluid being supplied to the hydraulic cylinder, and a back-pressure increasing portion operable to increase the back pressure in the back-pressure chamber of the accumulator for rapidly discharging the working fluid from the accumulator chamber, when the frictional coupling device is released to effect one of the shifting actions of the automatic transmission.
摘要翻译： 一种变速控制装置，用于控制包括具有液压缸的液压操作的摩擦联接装置的自动变速器的换档动作，所述液压缸在所述摩擦联接装置接合时被供给工作流体，所述变速控制装置包括瞬时液压控制 装置，其可操作以在释放所述摩擦联接装置时根据电信号控制所述液压缸中的液压的瞬时值;以及蓄能器，其具有背压室，所述后压室的背压是可控制的;以及蓄能器室 连接到摩擦联接装置的液压缸，并且可操作以当摩擦联接装置与供应到液压缸的工作流体接合时控制液压缸中的液压的瞬时值，并且提供背压增加 部分可操作以增加背压 当摩擦联接装置被释放以实现自动变速器的换档动作之一时，蓄能器的背压室用于从蓄能室快速排出工作流体。
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公开(公告)号：US5881858A
公开(公告)日：1999-03-16
申请号：US777179
申请日：1996-12-27
申请人： Kazumasa Tsukamoto , Masahiro Hayabuchi , Masaaki Nishida , Akitoshi Kato , Katsuyuki Tanahashi
发明人： Kazumasa Tsukamoto , Masahiro Hayabuchi , Masaaki Nishida , Akitoshi Kato , Katsuyuki Tanahashi
CPC分类号： F16H63/3003
摘要： A hydraulic servo-mechanism for an automatic transmission, including a hydraulic servo for applying a band brake to engage a band to a drum. The hydraulic servo includes a rod which is selectively positionable to an apply position for applying the band brake, a standby position in which the rod is retracted by a predetermined extent in a release direction from the apply position, and a retracted position in which the rod is further retracted in the release direction from the standby position to release the band brake.
摘要翻译： 一种用于自动变速器的液压伺服机构，包括用于施加带式制动器以将带接合到滚筒的液压伺服机构。 液压伺服机构包括杆，该杆可以选择性地定位到用于施加带式制动器的施加位置，待机位置，杆在从施加位置沿释放方向缩回预定的程度;以及缩回位置，其中杆 进一步从释放方向退回到待机位置以释放带式制动器。
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公开(公告)号：US5749802A
公开(公告)日：1998-05-12
申请号：US646467
申请日：1996-05-08
CPC分类号： F16H61/0437 , F16H2059/6807 , F16H2061/0485 , F16H59/36 , F16H59/70 , F16H61/0021 , F16H61/08 , Y10T477/6895
摘要： An automatic transmission control apparatus has first and second hydraulic servos for engaging forward and reverse driving friction engaging elements, respectively, a fluid pressure control unit, a range shift detector, and an electronic control unit. When the forward driving range is selected, the fluid pressure control unit supplies a forward driving range pressure to the hydraulic servo via a changeover valve operated by a signal pressure from a normal open-type solenoid valve, when the signal pressure is drained. When the reverse driving range is selected, the electronic control unit outputs a signal to magnetize the solenoid valve. The solenoid valve is thus turned on to discontinue the drain. The control apparatus thus prevents low pressure in the reverse driving range pressure to prevent delay of engagement of the clutch.
摘要翻译： 一种自动变速器控制装置具有用于分别接合前进和后退驱动摩擦接合元件的第一和第二液压伺服机构，流体压力控制单元，量程换档检测器和电子控制单元。 当选择正向驱动范围时，当信号压力被排出时，流体压力控制单元通过由来自正常开式电磁阀的信号压力操作的转换阀向液压伺服机构供给正向行驶范围压力。 当选择反向驱动范围时，电子控制单元输出一个信号来磁化电磁阀。 因此，电磁阀被打开以中止排水。 因此，控制装置防止反向驱动范围压力中的低压，以防止离合器的接合延迟。
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公开(公告)号：US5707316A
公开(公告)日：1998-01-13
申请号：US646635
申请日：1996-05-08
IPC分类号： F16H59/36 , F16H59/38 , F16H59/44 , F16H59/68 , F16H61/00 , F16H61/04 , F16H61/06 , F16H61/08
CPC分类号： F16H61/061 , F16H2059/6807 , F16H2061/0488 , F16H59/36 , F16H59/38 , F16H59/44 , F16H61/08 , Y10T477/689 , Y10T477/6895 , Y10T477/6939
摘要： An automatic transmission control apparatus has a clutch, a hydraulic servo for the clutch, a fluid pressure control unit, a range shift detector, and an electronic control unit. The fluid pressure control unit has a manual valve, a pressure regulating valve device, and a changeover valve device. The electronic control unit controls the changeover valve device and the pressure regulating valve device. Immediately after a shift to the forward driving range, the electronic control unit holds the changeover valve device in such a state that a forward driving range pressure is supplied without passing through the pressure regulating valve device. Then, the electronic control unit shifts the changeover valve device to such a state that a regulated pressure is supplied from the pressure regulating valve device, which has been switched to a pressure regulating state by the electronic control unit. This control operation precisely sets the fluid pressure changeover timing and the initial fluid pressure.
摘要翻译： 一种自动变速器控制装置具有离合器，用于离合器的液压伺服机构，流体压力控制单元，量程变速检测器和电子控制单元。 流体压力控制单元具有手动阀，压力调节阀装置和切换阀装置。 电子控制单元控制切换阀装置和压力调节阀装置。 在转移到前进行驶范围之后，电子控制单元将转换阀装置保持在提供正向行驶范围压力而不通过压力调节阀装置的状态。 然后，电子控制单元将切换阀装置移动到由电子控制单元切换到压力调节状态的调压阀装置供给调节压力的状态。 该控制操作精确地设定流体压力切换定时和初始流体压力。
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