发明名称 |
Speed-change control apparatus for automatic transmission |
摘要 |
A control apparatus for an automatic transmission achieves a predetermined speed-change operation from sixth speed to third speed through a pre-phase speed-change operation in which a first engagement element (B1) and a third engagement element (C1) are released and engaged respectively and through a post-phase speed-change operation in which a second engagement element (C2) and a fourth engagement element (C3) are released and engaged respectively. The control apparatus sets a target rotational acceleration of an input shaft of the transmission, and controls release of the second engagement element for a transition to the post-phase speed-change operation in accordance with the target rotational acceleration. Thus, the input speed during the transition from the pre-phase speed-change operation to the post-phase speed-change operation changes continuously, so that bluntness is prevented from being caused between the pre-stage and post-stage speed-change operations. |
申请公布号 |
EP1249644(A3) |
申请公布日期 |
2009.05.06 |
申请号 |
EP20020008097 |
申请日期 |
2002.04.11 |
申请人 |
AISIN AW CO., LTD. |
发明人 |
HAYABUCHI, MASAHIRO;NISHIDA, MASAAKI;TSUTSUI, HIROSHI;KOJIMA, KOUICHI;TERAOKA, YUTAKA;IWAI, NOBUHIRO;AKUTSU, KIYOSHI |
分类号 |
F16H61/06;F16H61/08;F16H3/66;F16H59/20;F16H61/04;F16H61/686 |
主分类号 |
F16H61/06 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|