A control method for synchronization of engine speed and motor speed when lock-up of an engine clutch of a hybrid electric vehicle is carried out. The synchronization control method includes increasing engine speed by controlling toward motor speed as a target speed when synchronization starts according to a demand for the lock-up of an engine clutch during travelling of the hybrid electric vehicle using motor driving power while the engine clutch is opened; estimating an engine speed at a time of speed change when the motor speed increases and reaches a preset changed speed at which a speed change is carried out; calculating motor speed after the speed change using the changed speed and information on gear ratio before and after the changed speed when the estimated engine speed at the time of speed change is less than the preset changed speed; and controlling the engine speed by changing the target speed into the motor speed after the speed change.
SYNCHRONIZATION CONTROL METHOD FOR ENGINE CLUTCH LOCK-UP IN HYBRID ELECTRIC VEHICLE
2016-05-05
Patent
Electronic Resource
English
IPC: | B60W CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION , Gemeinsame Steuerung oder Regelung von Fahrzeug-Unteraggregaten verschiedenen Typs oder verschiedener Funktion / B60K Anordnung oder Einbau von Antriebseinheiten oder von Kraft- bzw. Drehmomentübertragungen in Fahrzeugen , ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES |
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