| 摘要 |
PURPOSE: A learning control method at power-on upshift from 2 to 3 of an automatic transmission for a vehicle is provided to improve shift quality by preventing interlock shock in power-on upshifting from 2 to 3-range with learning fill time independently. CONSTITUTION: A transmission control unit outputs a control demand signal of power-on upshift from 2 to 3 in satisfying power-on upshift condition during 2-range traveling, and decides satisfaction of first condition for initial learning control of shift(S110,S120,S130). Stabilization of the third learning region is detected in satisfying the first condition(S140), and the initial fill time learning value is compared with the first predetermined value(S150). The fill time base is decided, and first power-on upshift control is detected(S160,S170). Satisfaction of the second condition from interlock is decided in detecting the first power-on upshift control, and change of fill time is calculated and learned to apply for the next time in satisfying the second condition.
|
