Patent ID: 6223528
Filing Date: 2001-05-01
Classification: F16H

Abstract:
A hydrodynamic torque converter with a converter circuit, comprising:an impeller wheel rotatable about an axis of rotation and having an impeller shell connected to an impeller hub, blades connected to said impeller shell and an impeller inner wall connecting free ends of said blades, said impeller inner wall having a radially inner end and a radially outer end;a turbine wheel rotatable about said axis of rotation and relative to said impeller wheel having a turbine shell connected to a turbine hub, blades connected to said turbine shell and a turbine inner wall connecting free ends of said blades, said turbine inner wall having a radially inner end and a radially outer end; anda stator wheel rotatable about said axis of rotation and axially fixedly mounted between said turbine hub and said impeller hub;said turbine inner wall and said impeller inner wall forming an inner torus; andsaid turbine inner wall having a radially inner turbine wheel extension at said radially inner end and a radially outer turbine wheel extension at said radially outer end of said turbine inner wall extending axially toward said impeller wheel and said impeller inner wall having a radially inner impeller wheel extension at said radially inner end and a radially outer impeller wheel extension at said radially outer end of said impeller inner wall extending axially toward said turbine wheel,said radially inner turbine wheel extension comprising a radially inner lengthening overlapping said radially inner impeller wheel extension by a first axial length in a direction of flow of the converter circuit with a first radial offset comprising a first radial gap, andsaid radially outer impeller wheel extension comprising a radially outer lengthening overlapping said radially outer turbine wheel extension by a second axial length in a direction of flow of the converter circuit with a second radial offset comprising a second radial gap.