发明名称 |
Schaltsteuersystem für automatisches Getriebe |
摘要 |
In a vehicle transmission wherein plural speed change ratios from a highest speed change ratio to a lowest speed change ratio are selectively applied according to a command input by a driver, a real speed change ratio of the transmission is detected. It is determined whether or not the transmission is performing a shift-down based on the input command and the real speed change ratio. A shift-down limit speed change ratio is determined based on the speed change ratio before the shift-down operation is performed, and when the engine brake of the vehicle is operating, the transmission is controlled so as not to apply a speed change ratio larger than this shift-down limit speed change ratio. Due to this, the driver does not experience an excessive engine braking sensation even when an extreme speed change command is issued. <IMAGE> |
申请公布号 |
DE69818563(D1) |
申请公布日期 |
2003.11.06 |
申请号 |
DE1998618563 |
申请日期 |
1998.07.09 |
申请人 |
NISSAN MOTOR CO., LTD. |
发明人 |
OCHIAI, TATSUO;OKAHARA, HIROFUMI |
分类号 |
F16H61/16;F16H61/21;F16H61/662;F16H63/14;(IPC1-7):F16H61/00 |
主分类号 |
F16H61/16 |
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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