Systematic Design of Input- and Output-Split Hybrid Electric Vehicles With a Speed Reduction/Multiplication Gear Using Simplified-Lever Model

Kang, Jingeon; Kim, Hyunjun; Kum, Dongsuk

doi:10.1109/tits.2019.2934324

Cited by 18 publications

(4 citation statements)

References 33 publications

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“…The center of a singlestar planetary array is planet carrier C, with two ends being sun gear S and ring gear R. The middle fulcrum of a double-star planetary array is found in ring gear R. The distance (force arm) of fulcrum S and R from fulcrum C is related to the number of ring gear teeth and sun gear teeth. The equivalent lever diagrams of single-star and double-star planetary rows are shown in Figure 1, where l is the distance between fulcrum R and fulcrum C  is the characteristic parameter of the planetary row [13][14][15][16][17][18][19][20][21].…”

Section: Lever Analysis Methods For the Planetary Gear Mechanismmentioning

confidence: 99%

Research on Gear Synthesis of Automatic Transmission

Xue,

2024

Applied Mathematics and Nonlinear Sciences

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The lever method facilitates a straightforward analysis of the motion dynamics of an automatic transmission under various gear settings, offering a simple and intuitive approach to examining planetary gear transmissions. Specifically, the equivalent lever diagram for a parallel-double planetary gear transmission comprises four component points. From a control perspective, a transmission system with two planetary rows can accommodate up to two reduction gears, one direct gear, one overdrive gear, and one reverse gear. In contrast, the equivalent lever diagram for a parallel three-planetary gear transmission includes five component points, with such systems typically supporting up to three reduction gears, one direct gear, two overdrive gears, and two reverse gears. This methodological approach underscores the lever diagram’s utility in delineating the functional capabilities of complex transmission systems.

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Section: Lever Analysis Methods For the Planetary Gear Mechanismmentioning

confidence: 99%

Research on Gear Synthesis of Automatic Transmission

Xue,

2024

Applied Mathematics and Nonlinear Sciences

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“…Ning et al 24 employed a novel method that converts vehicle speed into a load, enabling the determination of the load spectrum for the reducer gears based on real road driving cycles. Kang et al 25 proposed a systematic methodology for designing speed-reduction gears, aiming to analyze their impact on the performance of input-split and output-split hybrid electric vehicles. Chen et al 26 established a novel dynamic model of planetary gear transmission using Newton's theory.…”

Section: Introductionmentioning

confidence: 99%

Dynamic simulation of a motor longitudinally mounted on a centralized electric drive systems for pure electric vehicles under torque ripple and transmission error excitations

Liao,

Hua,

Cheng

et al. 2023

Science Progress

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The dynamic characteristics of electric drive systems are crucial in electric vehicles. Based on the dynamic finite element method and previous studies, this study proposes and analyzes a new mathematical model for a motor longitudinally mounted on a centralized electric drive system of a pure electric vehicle. First, we analyze the largest torque ripple of a fractional slot concentrated winding inner-mounted permanent magnet synchronous motor designed for commercial electric vehicles. This torque ripple is identified as one of the excitations influencing the dynamic performance of the electric drive system. Second, a new dynamic mathematical model for the electric drive system is established. Third, we investigate the linear vibration responses of the system subject to torque ripple and transmission error. Finally, the relationships between critical motor parameters and dynamic mesh force are revealed. The results demonstrate that the proposed theoretical method can effectively determine the dynamic characteristics of the electric drive system, thereby providing valuable theoretical guidance for the design and optimization of the motor and electric drive system.

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“…The torque and speed of the powertrain elements and power split ratio were analyzed using the LAM by Wang [8] and Kim [9]. Barhoumi [10,11], Kim [12], and Kang [13] used the LAM to explore fuel economy and acceleration performance metrics, of compound split hybrid configurations. Yang [14] analyzed the configurations and upshift/downshift process kinematics of the dual-input compound power-split mechanism (DICPSM).…”

Section: Introductionmentioning

confidence: 99%