发明名称 |
Method and apparatus for controlling automatic transmission |
摘要 |
In an automatic transmission including first and second planetary gear sets and a plurality of friction elements, during an up-shift and a time after the up-shift, a hydraulic pressure of a released friction element is kept at a predetermined value corresponding to the biasing force of a return spring set in the control valve of the friction element for a predetermined time after the end of the up-shift. When a down-shift is carried out immediately after the above-mentioned up-shift, the engagement of the released friction element is rapidly carried out since the hydraulic pressure of the friction element is kept at the predetermined value. |
申请公布号 |
US5285880(A) |
申请公布日期 |
1994.02.15 |
申请号 |
US19920886851 |
申请日期 |
1992.05.22 |
申请人 |
NISSAN MOTOR CO., LTD. |
发明人 |
MINAGAWA, YUSUKE;TAKIZAWA, SATOSHI |
分类号 |
F16H61/00;F16H61/02;F16H61/04;F16H61/06;F16H61/10;(IPC1-7):F16D25/11;B60K41/22 |
主分类号 |
F16H61/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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