Bridging net-type clutch friction ring for hydrodynamic torque converter

摘要

Grooves are formed over part of their extended length at least one throttle point which determines the volume of cooling fluid which can flow through the grooves. The throttle point is designed for a turbulent flow and the remaining groove areas are designed for a laminar flow. The length of one throttle point is in the order of between 2 and 8 mm, preferably in the order of between 3 and 5 mm. The cross-sectional ratio between the oblong areas of the grooves with larger cross-section and the throttle point lies in the order of between 3 to 1 and 8 to 1, preferably in the order of between 4 to 1 and 6 to 1.