SHIFT CONTROL METHOD FOR PREVENTING STARTING STAGE ENGAGEMENT FAILURE OF HYBRID ELECTRIC VEHICLE

摘要

When a hybrid electric vehicle in which an automatic manual transmission (AMT) is equipped stops and then re-starts, when a starting stage of the AMT is not implemented, an RPM of a driving motor which is directly connected to an input shaft is changed so that a torque applied to an input shaft of the AMT is increased or decreased, and thus even though a blocking phenomenon occurs when an AMT-HEV stops and then re-starts after an engine re-starts, the torque transferred from the driving motor to the input shaft is appropriately increased and decreased and thus a gear restricted to the input shaft differently rotates from a synchronizer.

主权项

1. A shift control method for preventing a starting stage engagement failure of a vehicle, comprising:
operating a driving motor which is included in the vehicle so that an RPM is appropriate; operating an automatic manual transmission (AMT) which is included in the vehicle to implement a starting stage; and sensing a change in the RPM of the driving motor when the starting stage is not implemented and increasing or decreasing the RPM of the driving motor depending on the change in the RPM of the driving motor.