发明名称 |
Shift control system for selecting between two shift patterns based on the transmission temperature and lock-up clutch state in an automatic transmission |
摘要 |
A shift control system controls an automatic transmission of a vehicle wherein half-lock-up control for a lock-up clutch is executed when the running state of the vehicle is in a predetermined operative range. The shift control system includes a half-lock-up control inhibiting unit for inhibiting the half-lock-up control from being executed when the running state of the vehicle is held in a specific operative state even though the running state of the vehicle is in the predetermined range, a determining unit for determining whether or not the half-lock-up control is inhibited by the half-lock-up control inhibiting means, and a controlling unit for controlling the automatic transmission such that a low speed stage at which the half-lock-up control is easily executed is positively utilized when it is determined that the half-lock-up control is not inhibited by the determining unit, and moreover, controlling shift change of the automatic transmission such that a high speed stage having a gear ratio lower than that at the lower speed stage is positively utilized when it is determined that the half-lock-up control is inhibited by the determining unit. |
申请公布号 |
US5347885(A) |
申请公布日期 |
1994.09.20 |
申请号 |
US19920889287 |
申请日期 |
1992.05.28 |
申请人 |
TOYOTA JIDOSHA KABUSHIKI KAISHA |
发明人 |
TAGA, YUTAKA;HOJO, YASUO;TABATA, ATSUSHI |
分类号 |
F16H61/10;F16H59/08;F16H59/24;F16H59/44;F16H59/72;F16H59/78;F16H61/00;F16H61/02;F16H61/14;(IPC1-7):F16H61/02 |
主分类号 |
F16H61/10 |
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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