Interrelated power delivery controls – including engine control – Transmission control – Transmission controlled by engine
Reexamination Certificate
2011-01-04
2011-01-04
Le, David D (Department: 3655)
Interrelated power delivery controls, including engine control
Transmission control
Transmission controlled by engine
C477S141000
Reexamination Certificate
active
07862474
ABSTRACT:
A speed change control device for an automatic transmission according to this invention determines whether or not a request to downshift a gear position of the transmission exists during traveling in a manual speed change mode (S1, S2), and calculates an input shaft rotation speed of the transmission following a downshift based on the downshift request (S4). When it is determined that the calculated rotation speed is higher than a rotation speed limit value (S5), the speed change control device performs a downshift to a gear position at which the input shaft rotation speed of the transmission is lower than the calculated rotation speed (S6, S8).
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Kadono Ryoji
Kimura Yusuke
Kobayashi Atsufumi
Makiyama Akihiro
Ochiai Tatsuo
Foley & Lardner LLP
Holmes Justin
Jatco Ltd
Le David D
Nissan Motor Co,. Ltd.
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