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:
Jun. 10, 2014
Filed:
Nov. 12, 2008
Christian Krauss, Cologne, DE;
Marco Siebigteroth, Hennef, DE;
Georg Hillebrand, Roesrath, DE;
Reinhard Moehlmann, Cologne, DE;
Stefan Kirschstein, Odenthal, DE;
Christian Krauss, Cologne, DE;
Marco Siebigteroth, Hennef, DE;
Georg Hillebrand, Roesrath, DE;
Reinhard Moehlmann, Cologne, DE;
Stefan Kirschstein, Odenthal, DE;
Getrag Ford Transmissions GmbH, Cologne, DE;
Abstract
A method of feeding a clutch cylinder in a hydraulically actuated clutch system in a motor vehicle and a respective hydraulically actuated clutch system are suggested. The clutch system comprises at least one clutch that can be closed by filling the clutch cylinder; and a hydraulic system that provides a system pressure and has a clutch control valve having an inlet and an outlet. A system pressure is applied at the inlet of the control valve; the clutch pressure for actuating the clutch is provided at the outlet; and the system pressure is decreased pressure prior to and during the filling of the clutch cylinder. The decreased system pressure allows a high volume flow and therefore a fast filling of the clutch cylinder without establishing a premature torque transmitting capacity in the clutch.