Torque characteristics of a controllable centrifugal clutch for electric vehicles

SONG Haijun; SONG Jian; FANG Shengnan; LI Fei; TAI Yuzuo; TRUONG Sinh Nguyen

doi:10.16511/j.cnki.qhdxxb.2017.25.032

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Journal of Tsinghua University(Science and Technology) ›› 2017, Vol. 57 ›› Issue (7) : 747-752. DOI: 10.16511/j.cnki.qhdxxb.2017.25.032

AUTOMOTIVE ENGINEERING

Torque characteristics of a controllable centrifugal clutch for electric vehicles

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Abstract

The adjustments of the engaged speed and torque is key for the control of centrifugal clutchs in electric vehicles automatic transmission. The factors affecting the clutch torque characteristics were analyzed to model the contact torque on the centrifugal shoe. The models for the uniform centrifugal force on the centrifugal shoe and the contact pressure between the shoe and drum are simplified to get an analytical expression for the clutch torque β. The regulation characteristics of the clutch engage speed and the torque about β are analyzed for speeds of 0° to 90° for automatic transmissions for electric vehicles. A virtual clutch prototype is used to verify the clutch torque regulation characteristics. The results show that the basic characteristics of the clutch torque regulation well are reflected by the β-model.

Key words

centrifugal clutch / electric vehicle / analytical model / contact speed / torque regulation

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SONG Haijun, SONG Jian, FANG Shengnan, LI Fei, TAI Yuzuo, TRUONG Sinh Nguyen. Torque characteristics of a controllable centrifugal clutch for electric vehicles[J]. Journal of Tsinghua University(Science and Technology). 2017, 57(7): 747-752 https://doi.org/10.16511/j.cnki.qhdxxb.2017.25.032

References

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