The present invention relates to a technology for quickly performing gear shifting through motor and clutch controls without a shifting shock in regenerative braking and low gear shifting situations. More specifically, disclosed is a method for controlling gear shifting in a hybrid dual clutch transmission (DCT) vehicle, which comprises: a step of decreasing a releasing side clutch torque to release a releasing side clutch when down shifting the transmission to a gear shifting stage below a predetermined gear shifting stage at a vehicle speed equal to or less than a predetermined vehicle speed; a step of transmitting a control command for applying motor torque to increase a motor speed to be increased toward a coupling side clutch speed when a slip amount between the motor speed and the coupling side clutch speed reaches a first set value; a step of transmitting a control command for reducing the motor torque when the slip amount between the motor speed and the coupling side clutch speed reaches a second set value less than the first set value; and a step of applying a coupling side clutch torque to allow a coupling side clutch to be coupled when an actual motor torque reaches a target reduced torque in accordance with the control command for reducing the motor torque.
본 발명은 회생제동 및 저단 기어변속 상황에서 모터 및 클러치토크 제어를 통해 변속 충격 없이 신속하게 변속하는 기술에 관한 것으로, 본 발명에서는, 소정 차속 이하에서 특정 변속단 이하의 변속단으로 다운시프트 변속 시작시, 해방측 클러치토크를 감소시켜 해방측 클러치를 해제 제어하고; 해방측 클러치 해제 후에, 모터속도와 결합측 클러치속도의 슬립량이 제1설정값에 도달시, 모터토크를 인가하는 제어명령을 전송하여 모터속도가 결합측 클러치속도를 향해 상승하도록 제어하며; 모터속도와 결합측 클러치속도의 슬립량이 제1설정값보다 작은 제2설정값에 도달시, 모터토크를 저감하는 제어명령을 전송하며; 모터토크를 저감하는 제어명령에 따라 실제 모터토크가 목표 저감토크에 도달시, 결합측 클러치토크를 인가하여 결합측 클러치를 체결하는 것을 특징으로 하는 하이브리드 DCT차량용 변속 제어방법이 소개된다.
CONTROL METHOD FOR SHIFTING HYBRID VEHICLES WITH DUAL CLUTCH TRANSMISSION
하이브리드 DCT차량용 변속 제어방법
2019-04-23
Patent
Electronic Resource
Korean
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 / F16H Getriebe , GEARING |
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