Patent ID: 6497096
Filing Date: 2002-12-24
Classification: B60K,F16D

Abstract:
An automatic transmission for automobiles, comprising:a housing filled with transmission fluid; a pump positioned at a first side within said housing and integrated with one end of an input shaft connected to an engine crank shaft, said pump being rotated along with the input shaft; a turbine positioned at a second side within the housing while being opposed to said pump, with both an output shaft integrally extending from the turbine to the outside of said housing and a plurality of turbine blades being regularly arranged around the turbine, said turbine blades being changeable in their inclination angles relative to an axis of the output shaft so as to allow a rotating speed to be changeable when a rotating force of said pump is transmitted to the turbine through the transmission fluid; a hydraulic pressure control unit used for controlling inflow and outflow of the transmission fluid for the housing while controlling a hydraulic pressure within the housing; an air control valve used for controlling inflow and outflow of air relative to the housing in response to the inflow and outflow of the transmission fluid relative to the housing; and a transmission control unit (TCU) used for controlling both the hydraulic pressure within the housing and the inclination angle of the turbine blades in accordance with operational conditions of an engine and a desired running speed of an automobile.