Automatic transmission control system

Details Automatic transmission control system Automatic transmission control system

2007-12-25

2007-12-25

Wright, Dirk (Department: 3681)

Interrelated power delivery controls, including engine control

Transmission control

Transmission controlled by engine

Reexamination Certificate

active

11235064

ABSTRACT:
In an automatic transmission control system, an operating amount of a throttle due to a driver's depression of an accelerator pedal is detected, and the rotating number of an engine suitable for the detected throttle operating amount is detected. The automatic transmission control system includes a shift map defined by the throttle operating amount and the engine rotating number. The actuation of upshift or downshift of a transmission is automatically controlled based on the shift map. The driver can be informed of a point where a shift map is switched by a depression operation of the accelerator pedal so that generation of unnecessary downshift and delay of upshift are prevented to allow a vehicle to be efficiently driven.

REFERENCES:
patent: 5529296 (1996-06-01), Kato et al.
patent: 64-39955 (1987-09-01), None
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patent: 2001-227638 (2001-08-01), None
patent: 2002-48232 (2002-02-01), None
English abstract of Nissan Diesel Technological Report No. 60, publication date Mar. 14, 1998. Pertinent information noted in red.

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