| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an automatic transmission control device for improving gear shift response. <P>SOLUTION: Under a condition that a frictional element 4a for keeping an engagement state as it is in specific gear shifting is a first frictional element 4a, and a frictional element 4b for switching the engagement state to a disengagement state in gear shifting is a second frictional element 4b, this automatic transmission control device 10 comprises a line pressure producing means 20 for producing line pressure, pressure adjusting means 22a-22f, 28a-28f for adjusting fluid pressures applied to a plurality of frictional elements 4a-4f including the first frictional element 4a and the second frictional element 4b to the fluid pressure proportional to the line pressure, a fluid pressure switch means 30 being switched on and off in accordance with magnitude relation between the total sum of the impressed fluid pressure to the first frictional element 4a and the second frictional element 4b, and the reference pressure proportional to the line pressure, and a determining means 40 for determining the abnormality on the basis of on/off of the fluid pressure switch means 30. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
