Configuration Synthesis of Novel Hybrid Transmission Systems Using a Combination of a Ravigneaux Gear Train and a Simple Planetary Gear Train

Thanh-Tho Ho and Sheng-Jye Hwang
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Thanh-Tho Ho: Department of Mechanical Engineering, National Cheng Kung University, 1, University Road, Tainan 70101, Taiwan
Sheng-Jye Hwang: Department of Mechanical Engineering, National Cheng Kung University, 1, University Road, Tainan 70101, Taiwan

Energies, 2020, vol. 13, issue 9, 1-24

Abstract: Thirty-two novel hybrid transmissions consisting of a Ravigneaux gear train and a single planetary gear train are synthesized using a creative design methodology based on graph-theory and the lever analogy method. The design process commences by identifying an existing transmission configuration which meets all of the design requirements. The chosen design is then used to synthesize all possible mechanism permutations which satisfy the design constraints. The feasible mechanisms which satisfy both the design requirements and the design constraints are converted into analogous levers. The levers which fail to provide the required operation modes of the hybrid transmission are eliminated and the remaining levers are assigned brakes and clutches in order to realize the final designs. The responsiveness of the new hybrid transmissions and the feasibility of the proposed design methodology are confirmed by analyzing the power flow and kinematics of one of the designs in all of the operation modes.

Keywords: hybrid transmission; graph theory; lever analogy; design approach; electrically variable transmission (EVT); kinematic analysis (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2020
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (3)

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