METHOD OF CONTROLLING SHIFTING OF GEARS IN HYBRID VEHICLE

摘要

A method of controlling the shifting of gears in a TMED-type hybrid vehicle may include a stage in which, in a case where it is required that a power-on upshift operation is performed simultaneously when engagement of an engine clutch is carried out in order to convert the driving mode from an electric vehicle (EV) driving mode to hybrid-electric vehicle (HEV) driving mode, simultaneously performs the engagement of the engine clutch and the shift operation, thereby improving acceleration and shifting performances and providing a quick driving response for a driver.

主权项

1. A method of controlling shifting of gears in a hybrid vehicle, the method comprising:
an entry condition judgment stage of determining both whether a power-on upshift demand has been generated while the vehicle is being used in an electric vehicle (EV) driving mode, being in a state where an actual shifting of the vehicle is able to be initiated, and whether an engine-on demand has been generated; a time judgment stage of, when an engine and a motor have a synchronized rpm, determining whether a current point is prior to a predetermined reference point within a shift-preparation period; a release compensation stage of, when the current point has been determined in the time judgment stage to be prior to the reference point, applying hydraulic pressure for engagement of an engine clutch and at a same time, compensating release-hydraulic pressure of a gearshift element, taking account of the applied hydraulic pressure of the engine clutch; an actual shifting judgment stage of, when the current point has been determined in the time judgment stage to follow the reference point, determining whether the actual shifting has been initiated; and an apply compensation stage of, when the actual shifting has been determined in the actual shifting judgment stage to be initiated, applying hydraulic pressure for engagement of the engine clutch, and compensating applied-hydraulic pressure of the gearshift element, taking account of the applied hydraulic pressure of the engine clutch.