Power Transmission of Half-Toroidal Traction Drive Continuously Variable Transmission : Four-Wheel-Drive CVT Design and Its Performance
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概要
- 論文の詳細を見る
Four-wheel drive offers cruising stability and high road gripping force at the expence of the power weight ratio due to implementation of an additional mechanism of a center differential gear box with a torque split clutch. We developed a dual-cavity half-toroidal traction-drive continuously variable power transmission (CVT) for 3 L passenger cars in 1990, which can be easily remodelled into a CVT with two output shafts since it has two independent CVT units. Since the CVT has a hydraulic-control equal-force-transmitting mechanism for speed ratio control, it is easy to synchronize the force transmission of front and rear axles without using a center differential gear box. In this paper we describe the mechanism, efficiency and control principle for the equivalent function of a center differential gear box of the four-wheel-drive CVT with nominal input torque capacity of 250 N・m, rotational speed of 5500 rpm and maximum speed ratio range of 1 : 8.7.
- 一般社団法人日本機械学会の論文
- 1995-12-15
著者
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Imanishi Takashi
Corporate R&d Center Nsk Ltd.
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Tanaka Hirohisa
Department Of Mechanical Engineering Yokohama National University
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MACHIDA Hisashi
Technology Development Division-Headquarters, NSK Ltd.
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Eguchi Masatoshi
Department of Mechanical Engineering, Yokohama National University
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Machida Hisashi
Research Center, NSK Ltd.
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Imanishi Takashi
Research Center, NSK Ltd.
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Machida Hisashi
Corporate R&d Center Nsk Ltd.
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Eguchi Masatoshi
Department Of Mechanical Engineering Yokohama National University
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- Power Transmission of Half-Toroidal Traction Drive Continuously Variable Transmission : Four-Wheel-Drive CVT Design and Its Performance
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