Patent ID: 6431335
Filing Date: 2002-08-13
Classification: F16H

Abstract:
A hydrodynamic torque converter, comprising:a converter housing defining an interior space for receiving a converter work fluid; a turbine wheel arranged in the interior space of the converter housing and rotatable with respect to the converter housing; a lockup clutch having a coupling element axially displaceably arranged on the turbine wheel for selectively coupling the turbine wheel with the converter housing; the converter housing and the coupling element defining a pressure fluid space capable of being filled with a pressure fluid; the interior space being separated from the pressure fluid space for preventing fluid communication between the interior space and the pressure fluid space; a first channel means operatively connected to the interior space for guiding converter work fluid into the interior space; a second channel means operatively connected to the interior space for guiding converter work fluid out of the interior space; a third fluid channel means operatively connected to the pressure fluid space for selectively directing pressure fluid into and out of the pressure fluid space, wherein the coupling element is displaced for at least partially canceling a rotational coupling of the converter housing and the turbine wheel when pressure fluid is directed into the pressure fluid space; and a pressure fluid space housing having a first side and a second side and being between a housing cover and a coupling piston of the torque converter, wherein the first side of the pressure fluid space housing defines at least a portion of the pressure fluid space and the second side defines at least a portion of the second converter work fluid space.