Hydraulic clutch and method for determining an adaptive clutch fill volume or return spring pressure

摘要

The application discloses a method for learning a character­istic filling volume of a hydraulic clutch (22). The method comprises iterative steps of applying a pressure pulse to the hydraulic clutch (22) when the clutch is in a disengaged state and determining an inflection event at an input or at an output of a torque path in which the hydraulic clutch (22) is situated. A characteristic filling volume of the hydraulic clutch (22) is derived from the determined inflection event. Furthermore, the application discloses a method for learning a characteristic return spring pressure of the hydraulic clutch (22), for engaging the hydraulic clutch (22) and cor­responding devices for carrying out the methods according to the application.