Patent Number: 6,945,907

Title: Method and apparatus for controlling the operation of a motor vehicle drivetrain

Abstract: A target engine rotational speed depending at least upon the position of anaccelerator pedal position and a motor vehicle speed is determined in amethod for controlling the operation of a motor vehicle drive train havinga drive motor and a branched power transmission with several steplesslyadjustable transmission ratio regions, between which shifting takes placeat a predetermined range shift transmission ratio. A transmission ratiocorresponding to the target engine rotational speed and vehicle speed isdetermined and set, whereby the change with respect to time of theaccelerator pedal position and/or the change with respect to time of thetarget engine rotational speed is used for determining the target enginerotational speed and is filtered when a difference between the actualtransmission ratio and a transmission ratio shift range falls below alimit value.

Inventors: Vornhem; Martin (Buhl, DE), Reuschel; Michael (Ottersweier, DE), Lauinger; Christian (Baden-Baden, DE), Bitzer; Franz (Friedrichshafen, DE)

Assignee:

International Classification:

Expiration Date: 09/20/2013