The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 10, 2012
Filed:
May. 27, 2008
Peter Herter, Ravensburg, DE;
Joachim Staudinger, Ravensburg, DE;
Rainer Petzold, Friedrichshafen, DE;
Franz Bitzer, Friedrichshafen, DE;
Peter Herter, Ravensburg, DE;
Joachim Staudinger, Ravensburg, DE;
Rainer Petzold, Friedrichshafen, DE;
Franz Bitzer, Friedrichshafen, DE;
ZF Friedrichshafen AG, Friedrichshafen, DE;
Abstract
A method for actuating a clutch () of a drivetrain of a motor vehicle such that, when the motor vehicle is rolling downhill with the accelerator pedal not being actuated and when the motor vehicle is coasting on level ground with the accelerator pedal not being actuated, a clutch position of the clutch () is determined as a function of a rotational speed difference between an input speed of a transmission () of the drivetrain and an idling speed of a power engine () of the drivetrain. The method includes the steps of determining the clutch position from the rotational speed difference between the transmission input speed and the power engine idling speed and correcting the clutch position using at least one parameter that depends on acceleration of the motor vehicle.