Process for controlling a vehicle automatic transmission comprises changing the duration of a switching element high-speed charging phase as a function of an operating state of the transmission and/or of a displaced volume of a pump device

摘要

Process for controlling an automatic transmission of a vehicle comprises changing the duration of a high-speed charging phase of a switching element as a function of an operating state of the automatic transmission and/or as a function of a displaced volume of a pump device by varying the high-speed charging pressure. Preferred Features: The high-speed charging pressure is varied as a function of the current hydraulic fluid volume flow available for the filling of a switching element. The hydraulic fluid volume flow is determined at least from the difference between the displaced volume of the pump device and a leakage of the hydraulic system.