Torque converter

Abstract

A torque converter includes a front cover, an impeller, a turbine, a piston, an internal hydraulic chamber, an external hydraulic chamber and a seal mechanism. The impeller is fixed to the front cover. The turbine is disposed in opposition to the impeller. The piston is disposed between the front cover and the turbine so as to be movable in an axial direction. The piston is engaged by friction with the turbine. The internal hydraulic chamber is delimited by the turbine and the piston. The external hydraulic chamber is obtained by excluding the internal hydraulic chamber from a hydraulic chamber delimited by the front cover and the impeller. The seal mechanism is disposed between the turbine and the piston, the seal mechanism blocking hydraulic oil from flowing into the internal hydraulic chamber from the external hydraulic chamber.

Dependencies are inferred from the claim text.