Method and apparatus for controlling the operation of a...

Details Method and apparatus for controlling the operation of a... Method and apparatus for controlling the operation of a...

2005-09-20

2005-09-20

Wright, Dirk (Department: 3681)

Interrelated power delivery controls, including engine control

Transmission control

Continuously variable friction transmission

C477S905000, C701S054000

Reexamination Certificate

active

06945907

ABSTRACT:
A target engine rotational speed depending at least upon the position of an accelerator pedal position and a motor vehicle speed is determined in a method for controlling the operation of a motor vehicle drive train having a drive motor and a branched power transmission with several steplessly adjustable transmission ratio regions, between which shifting takes place at a predetermined range shift transmission ratio. A transmission ratio corresponding to the target engine rotational speed and vehicle speed is determined and set, whereby the change with respect to time of the accelerator pedal position and/or the change with respect to time of the target engine rotational speed is used for determining the target engine rotational speed and is filtered when a difference between the actual transmission ratio and a transmission ratio shift range falls below a limit value.

REFERENCES:
patent: 6104976 (2000-08-01), Nakamura
patent: 6345221 (2002-02-01), Hattori et al.

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