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�������պ����ѧѧ�� 2002, Vol. 28 Issue (5) :578-580    DOI:
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Investigation on Start Behavior of Hydro��Viscous Transmission
ZHANG Yi-du, ZHANG Qi-xian*
Beijing University of Aeronautics and Astronautics, School of Mechanical Engineering and Automation

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Abstract�� Structure of the newly developed hydro-viscous soft start transmission is introduced and the hydroviscous-braking model is presented. The study on the hydro-viscous brake shows that a coupling relationship exists among the parameters of oil film thickness, hydro-viscous torque and friction disc speed. The variation of hydro-viscous torque is determined by the trend speeds to zero offriction disc speed and oil film thickness. When different patterns of oil film thickness are applied, hydro-viscous torque and friction disc speed will have obviously distinct characteristics.
Keywords�� friction disc   oil film   planetary gear drives   soft start   hydro-viscous brake     
Received 2001-03-05;
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���Զ�, ������.Һ��ճ��������װ�õ����������о�[J]  �������պ����ѧѧ��, 2002,V28(5): 578-580
ZHANG Yi-du, ZHANG Qi-xian.Investigation on Start Behavior of Hydro��Viscous Transmission[J]  JOURNAL OF BEIJING UNIVERSITY OF AERONAUTICS AND A, 2002,V28(5): 578-580
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http://bhxb.buaa.edu.cn//CN/     ��     http://bhxb.buaa.edu.cn//CN/Y2002/V28/I5/578
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