Control method for an automatic transmission of an...

Details Control method for an automatic transmission of an... Control method for an automatic transmission of an...

2005-04-26

2005-04-26

Jeanglaude, Gertrude A. (Department: 3661)

Data processing: vehicles, navigation, and relative location

Vehicle control, guidance, operation, or indication

Transmission control

C701S051000, C701S061000, C477S034000, C477S068000

Reexamination Certificate

active

06885929

ABSTRACT:
A control method for an automatic transmission in which a first and a second control system are provided and regulate the transmission ratio respectively in automatic and in manual mode. The method comprises the stages of activating the first control system and automatically setting a transmission ratio, detecting the presence of a manual command from an operator to modify the transmission ratio in use, performing the manual command from the operator by modifying the transmission ratio set automatically, silencing the first control system for a predetermined time interval such that the transmission ratio set following the manual command is not modified following any automatic gear change request from the first control system, and attributing the control of the automatic transmission to the first control system.

REFERENCES:
patent: 4740898 (1988-04-01), McKee et al.
patent: 6157884 (2000-12-01), Narita et al.
patent: 6363805 (2002-04-01), Marchart
patent: 3544981 (1987-06-01), None
patent: 4311886 (1994-10-01), None
patent: 1039178 (2000-09-01), None
patent: 58124853 (1983-07-01), None
patent: 9632299 (1996-10-01), None

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