Method and device for controlling the drive unit of a vehicle

Details Method and device for controlling the drive unit of a vehicle Method and device for controlling the drive unit of a vehicle

2005-10-04

2005-10-04

Wright, Dirk (Department: 3681)

Interrelated power delivery controls, including engine control

Transmission control

With clutch control

Reexamination Certificate

active

06951525

ABSTRACT:
A method for controlling the drive unit of a vehicle in which an extended overrun mode having reduced fuel consumption and reduced pollutant emission is possible. A free-wheel mode in which the vehicle operates with the clutch disengaged is set as a function of a driving situation or an operating state of the drive unit. An output variable of the drive unit, such as torque or vehicle speed, is set to a constant value during the transition between an engaged-clutch travel mode and a free-wheel mode.

REFERENCES:
patent: 4838397 (1989-06-01), Kurihara et al.
patent: 4842113 (1989-06-01), Lutz
patent: 5957805 (1999-09-01), Salecker et al.
patent: 6386351 (2002-05-01), Salecker et al.

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