POWER TRANSMISSION SYSTEM OF HYBRID ELECTRIC VEHICLE

• Main Authors: KIM DONGWOO, CHOI YONG SUG, HWANG SEONG WOOK, YOO ILHAN, EO SOONKI, PARK JONG HYO
• Format: Patent
• Language: English; Korean
• Published: 16.07.2021
• Subjects: ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS INVEHICLES; ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OFTRANSMISSIONS IN VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GASEXHAUST OR FUEL SUPPLY OF PROPULSION UNITS, IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; BLASTING; ENGINEERING ELEMENTS AND UNITS; GEARING; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; LIGHTING; MECHANICAL ENGINEERING; PERFORMING OPERATIONS; THERMAL INSULATION IN GENERAL; TRANSPORTING; VEHICLES IN GENERAL; WEAPONS

Disclosed is a power transmission device for a hybrid electric vehicle. According to one embodiment of the present invention, the power transmission device uses one planetary gear set on an output shaft to realize an engine mode composed of multi-stage fixed shifting ends and additionally uses one motor/generator on one input shaft to realize an electric vehicle mode and a parallel hybrid mode with the multi-stage fixed shifting ends, thereby having beneficial aspect of power transmission performance. Moreover, the power transmission device uses three synchronizers and two dog clutches to minimize a wet type clutch to reduce a drag loss and minimize weight to improve fuel efficiency. 하이브리드 차량용 동력전달장치가 개시된다. 본 발명의 일 실시 예에 따른 하이브리드 차량용 동력전달장치는 출력축 상에 1개의 유성기어세트를 적용하여 다단의 고정 변속단으로 이루어지는 엔진 모드를 구현하고, 하나의 입력축 상에 1개의 모터/제너레이터를 추가 적용하여 다단의 고정 변속단과 함께 전기 자동차 모드 및 패러럴 하이브리드 모드의 구현이 가능하도록 함으로써, 동력 전달 성능의 측면에서 유리하고, 3개의 싱크로나이저와 2개의 도그 클러치를 적용하여 습식 클러치를 최소화함에 따라 드레그 손실을 줄이고, 중량을 최소화하여 연비를 향상시킨다.