Abstract:
PURPOSE: A hybrid driving apparatus of a vehicle is provided to reduce energy loss due to electric energy flow or change by fixing the first motor generator and allowing the second motor generator to idle. CONSTITUTION: A hybrid driving apparatus of a vehicle comprises a planetary gear mechanism(1), first and second motor generators(3,5), an engine(7), a first brake(11), a second brake(13), and an output shaft(15). The planetary gear mechanism comprises at least four rotating elements. The first and the second motor generator are connected to two rotating elements of the planetary gear mechanism, respectively. The rotation restriction state of the engine can be independently varied by the two rotating elements. The first and the second brake can change the rotation restriction state of one of the rotating elements to a fixed member. The output shaft is connected to the rotating element of the planetary gear mechanism which is connected to the second motor generator.
Abstract:
PURPOSE: A power transmission apparatus of a hybrid vehicle is provided to implement two hybrid modes, two engine modes, and one electric mode using two planetary gear sets, two clutches, and one brake. CONSTITUTION: A power transmission apparatus of a hybrid vehicle comprises first and second planetary gear sets(PG1,PG2). The first planetary gear set is composed of first to third actuating members, wherein the first actuating member is secured on a second motor/generator(40) and selectively connected to an engine(10), and the second actuating member is fixed to the engine. The second planetary gear set is composed of fourth to sixth actuating members, wherein the fourth actuating member is fixed to a first motor/generator(30), the fifth actuating member is selectively connected to the first actuating member and a transmission case(50), and the sixth actuating member is fixed to the third actuating member and an output shaft(20).
Abstract:
A power distributor of a hybrid electric vehicle is provided to improve cooling effect by installing a generator at an outer part of a first shaft and to change cooling system into an air cooling system by connecting a plurality of shafts to a first shaft and then connecting the generator to a fifth shaft. A power distributor of a hybrid electric vehicle comprises a plurality of shafts, a motor(11), an engine(13), and a generator(12). The motor and the engine are connected with a first shaft(21). A second shaft(22), a third shaft(23), and a fourth shaft(24) are successively connected with a ring gear(14) installed at the first shaft. A fifth shaft(25) is connected with the first shaft through a planetary gear port(16). The generator is connected with the fifth shaft. The power is transmitted from the second shaft to the fourth shaft successively through a gear.
Abstract:
A hybrid system for delivering power is provided to employ an existing transmission and delver power generated from an engine and a motor to a driving wheel efficiently. A hybrid system includes an engine(1), a clutch(3), a motor(7), and a torque converter(11). The clutch(3) includes a clutch input shaft having the same axis as that of the output shaft of the engine(1) and a clutch output shaft. The motor(7) includes a rotor(5) connected to the clutch output shaft when a rotation shaft has the same axis as that of the clutch output shaft. The torque converter(11) is connected to a transmission(9). The torque converter(11) includes a converter input shaft having the same axis as that of the cultch output shaft and a converter output shaft. The clutch(3) and the motor(7) are interposed between an automatic transmission and the engine(1) while forming the same axis.
Abstract:
A power transmission device of a hybrid vehicle is provided to decrease length by driving a chain with a sprocket outside a ring gear of a planetary gear mechanism, and to adjust the deceleration gear ratio easily by placing second, third and fourth shaft power transmission device gears in a generator. A power transmission device of a hybrid vehicle includes a first shaft in which an engine, a generator(110), a motor(112) and a planetary gear mechanism between the generator and the motor are installed, a second shaft in which a second shaft driven gear(120) connected to the first shaft by receiving power from the planetary gear mechanism and a second shaft drive gear(122) connected to the second shaft driven gear and turned are mounted, a third shaft in which a third shaft driven gear(130) connected to the second shaft by receiving power from the second shaft driven gear and a third shaft drive gear(132) connected to the third shaft driven gear and turned are mounted, and a fourth shaft connected to a differential ring gear(140) engaged with the third shaft drive gear and connected to the third shaft and a differential unit(142). A sprocket drive gear is integrally formed in an outer periphery of a ring gear of the planetary gear mechanism.
Abstract:
4륜 하이브리드 전기자동차에서 전/후륜에서 발생하는 슬립을 제어하도록 하는 것으로, 주행 상태에서 전륜과 후륜의 속도를 연산하는 과정과, 연산된 전륜과 후륜의 속도에 현재의 주행속도를 적용한 연산으로 슬립이 발생되고 있는지 판단하는 과정과, 슬립이 발생되고 있는 상태이면 시스템의 상태 및 차량의 주행 상태가 트랙션 제어 조건을 만족하는지 판단하는 과정과, 트랙션 제어 조건을 만족하면 슬립 제어를 위한 트랙션 제어 토크량(T1)과 엔진 토크에 따른 엔진 꺼짐 방지 토크량(T2)을 결정하는 과정과, 트랙션 제어 토크량(T1)과 엔진 꺼짐 방지 토크량(T2)으로부터 최종 트랙션 제어 토크량(T3)을 결정하는 과정과, 전륜/후륜의 트랙션 제어 동일화 펙터값(K2)을 결정하는 과정 및 최종 트랙션 제어 토크량(T3)에 트랙션 제어 동일화 팩터값(K2)을 적용하여 전륜 및 후륜 모터에 토크 부가하여 슬립 발생을 제거하는 과정을 포함한다. 4륜 하이브리드 전기자동차, 전/후륜 모터, 슬립, 토크 제어
Abstract:
환경 차량이 아이들 발전 제어 상태에서 증가되는 토크량과 계산된 발전 토크 지령값이 가변되는 조건과 아이들 발전 제어가 해제되는 조건에 따라 아이들 발전 토크량을 제어하도록 하는 것으로, 엔진의 시동이 온에 따라 아이들 발전 모드에 진입되면 아이들 발전 토크 지령값을 결정하고, 1스텝 당 증가시키거나 감소시킬 발전 토크량을 결정하는 과정과, 결정된 아이들 발전 토크 지령값과 1스텝 이전의 실제 토크 지령값을 비교하여 발전 토크 모드를 결정하는 과정과, 결정되는 발전 토크 모드에 따라 최종 발전 토크 지령값을 결정하여 전동기 시스템의 아이들 발전 토크를 제어하는 과정과, 상기 결정된 최종 발전 토크 지령값으로 아이들 발전 토크를 제어하는 상태에서 운전자의 출발 의지에 의한 아이들 토크 제어 해제 조건이 검출되는지 판단하는 과정과, 해제 조건이 검출되면 엔진의 RPM, 온도, 전동기 시스템의 온도 정보를 기반으로 아이들 발전 해제시 감소시킬 발전 토크량을 결정하는 과정과, 1스텝 이전의 실제 토크값과 상기 결정되는 아이들 발전 해제시 감소시킬 발전 토크량을 더하여 산출되는 값과 아이들 발전 토크 지령값 중에서 작은값을 취하여 최종 발전 토크 지령값을 결정하여 전동기 시스템의 아이들 발전 토크를 제어하는 과정을 포함한다. 하이브리드 전기자동차, 아이들 발전 토크 제어,
Abstract:
비전자식 브레이크 시스템이 적용되는 4WD 하이브리드 전기 자동차의 제동시 전/후륜에 대한 제동 토크의 분배를 통해 전/후륜 모터로부터 적절한 회생 에너지를 회수할 수 있도록 하는 것으로, 제동 제어가 검출되면 현재의 차속을 검출하는 과정과, 현재의 차속 조건에서 가능한 최대 회생 제동 토크를 산출하는 과정과, 상기 산출된 회생 제동 토크를 차량의 안정성을 고려하여 전륜 모터 및 후륜 모터에 일정비로 분배하는 과정과, 상기 분배된 회생 제동 토크 및 모터 속도에 따른 전륜 모터 및 후륜 모터의 효율을 산출하여 배터리에 충전 가능한 최대 회생 제동 에너지량을 결정하는 과정 및 상기 결정된 회생 제동 에너지량을 배터리 충전 한계내에서 가장 큰 회생 제동 에너지를 얻을 수 있도록 전륜 모터 및 후륜 모터에 분배하여 회생 제동을 제어하는 과정을 포함하는 것을 특징으로 한다.
Abstract:
PURPOSE: A power system for a hybrid electric vehicle and a method for controlling the same are provided to achieve improved fuel efficiency by cutting off the power being supplied to the electrical component related only to an engine operation in case of engine stall. CONSTITUTION: A power system comprises a first relay(22) and a second relay(24) connected in serial with each other between a battery(20) and each of electrical components(28,30). The electrical component required for operation of a vehicle is connected to a rear end of the first relay. The electrical component which does not operate in case of engine stall is connected to a rear end of the second relay.
Abstract:
PURPOSE: A regenerative braking method for hybrid vehicles is provided to maximize the efficiency of a generator in a regenerative braking process by selecting an optimum transmission ratio. CONSTITUTION: A state of a brake pedal is checked(S1). A speed of a hybrid vehicle is checked(S2). The regenerative braking energy absorbed from a generator is calculated by using the state of the brake pedal and the speed of the hybrid vehicle(S3). The regenerative braking energy of a battery corresponding to each transmission ratio is calculated by using the regenerative braking energy absorbed from the generator(S4). A transmission ratio having a maximum value is selected from the regenerative braking energy of the battery corresponding to each transmission ratio(S5). A braking operation is performed by using the selected transmission ratio(S6).