Abstract: A shift control method for an automatic transmission not equipped to undergo skip shifting. Various skip shifting patterns are realized by detecting changes in turbine RPM, and delaying shifting if it is determined that turbine RPM are irregular, thereby achieving a normal shift pattern.

Abstract: Disclosed is a system for adjusting the working range of a damper clutch with reference to a linear function representing the relationship between the throttle valve position and the revolution per minute (rpm) of the engine in an automatic transmission of a vehicle, which includes a throttle valve position sensor for sensing the amount of opening of the throttle valve to generate an electrical position sensor signal, an engine rpm sensor for sensing the engine rpm to generate an electrical engine rpm signal, and a controller for changing the slope of the linear function according to the electrical position sensor signal and engine rpm signal by detecting the working of supplementary systems mounted in the vehicle for a driver's convenience.