Interrelated power delivery controls – including engine control – Transmission control – Transmission controlled by engine
Patent
1999-04-14
2000-06-27
Wright, Dirk
Interrelated power delivery controls, including engine control
Transmission control
Transmission controlled by engine
F16H 6108, F16H 6118
Patent
active
060800836
ABSTRACT:
A shift mode selector for an automatic transmission of a vehicle drive train including an engine, includes a first shift point map for an automatic shift in an automatic shift mode and a second shift point map in a manual shift mode. An input device produces an operator mode change demand from the manual shift mode to the automatic shift mode. A controller determines whether or not a potential downshift demand is available upon effecting a mode change demanded by said operator mode change demand. The controller prohibits the mode change when said potential downshift demand is available, and produces a gear ratio control signal in accordance with the second shift point map unless a predetermined condition is met. The gear ratio control signal is applied to a gear ratio actuator for establishing various gear ratios in the automatic transmission.
REFERENCES:
patent: 4680992 (1987-07-01), Hayasaki et al.
patent: 5545108 (1996-08-01), Wagner et al.
patent: 5586029 (1996-12-01), Schulz et al.
patent: 5738607 (1998-04-01), Kondo et al.
patent: 5868033 (1999-02-01), Nishino et al.
patent: 5882277 (1999-03-01), Iizuka
patent: 5908369 (1999-06-01), Nakauchi et al.
Nissan Motor Co,. Ltd.
Wright Dirk
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