公开(公告)号：US5048373A

公开(公告)日：1991-09-17

申请号：US577104

申请日：1990-09-04

申请人： Takayuki Sumimoto ,  Shunichi Egawa ,  Takahiro Kyohzuka

发明人： Takayuki Sumimoto ,  Shunichi Egawa ,  Takahiro Kyohzuka

IPC分类号： F16H61/10 ,  F16H59/20 ,  F16H61/02 ,  F16H61/04 ,  F16H61/18

CPC分类号： F16H61/0213 ,  F16H59/20 ,  F16H61/686 ,  Y10T477/693637 ,  Y10T477/693643

摘要： A control apparatus for an automatic transmission is disclosed which has shift valves to which a kickdown pressure, governor pressure corresponding to vehicle velocity and throttle pressure are applied, wherein the shift valves are changed over in dependence upon an equilibrium. The apparatus controls the application of the kickdown pressure to the shift valves. When the transmission speed detected during the kickdown operation is a relatively lower speed and vehicle velocity is rising, the kickdown pressure is applied within a first velocity region (Z1 or Z4) on a lower velocity side of a first vehicle velocity (V.sub.U2I or V.sub.U3I) which is less than an engine overrun point (V.sub.o1 or V.sub.o2); it is not applied within a second velocity region (Z2 or Z5) which is set from the first vehicle velocity to a second vehicle velocity which exceeds the engine overrun point (V.sub.o1 or V.sub.o2); and it is applied within a third velocity region (Z3 or Z6) which exceeds the second vehicle velocity.

摘要翻译： 公开了一种用于自动变速器的控制装置，其具有换档阀，在该换档阀上施加有相应于车辆速度和节气门压力的调压器压力的下降压力，其中换档阀根据平衡而改变。 该装置控制向换挡阀施加降压压力。 当在降档操作期间检测到的传输速度是相对较低的速度并且车速上升时，在第一车速（VU2I或VU3I）的较低速度侧的第一速度区域（Z1或Z4）内施加降档压力， 小于发动机超限点（Vo1或Vo2）; 在从第一车速到超过发动机超限点（Vo1或Vo2）的第二车速的第二速度区域（Z2或Z5）中不被施加; 并且被施加在超过第二车速的第三速度区域（Z3或Z6）内。