| 中文摘要 |
The power split unit of the Toyota Hybrid System uses a set of planetary gear train. This paper presents a systematic methodology for the analysis of the mechanical efficiency of power split unit of the Toyota Hybrid System. Based on the Graph Theory, a canonical graph representation is proposed to represent the kinematic structure of the power split unit of the Toyota Hybrid System efficiently. New graph representation and the concepts of fundamental circuit theory are used to develop this systematic method. The torque equations and the speed equation of power split unit of the Toyota Hybrid System are formulated using the concept of fundamental circuit theory. Then, the equation of mechanical efficiency of the power split unit can be expressed. |
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