SHIFT CONTROL METHOD FOR AUTOMATIC TRANSMISSION IN FOUR-WHEEL DRIVE VEHICLE

摘要

The present invention relates to a method of controlling a shift of an automatic transmission of a four-wheel low-speed drive vehicle, in which when a four-wheel low-speed drive mode is selected, it is possible to accomplish an appropriate operational condition for the four-wheel low- speed drive mode that can realize a variety of operational conditions of the vehicle while effectively limiting additional use of memories for storing shift patterns, by controlling a shift point of the automatic transmission to be appropriate for the four-wheel low-speed drive mode with appropriate change in a basic shift pattern according to a basic operational condition to consider together with the four-wheel low-speed drive mode without separately using a specific shift pattern and by controlling the apply and release parts to be appropriate for the control of the shift point, thereby it is possible to ensure a stable and smooth shift.