【発明の名称】無段変速機のためのスリップ調整装置 - Robert Botschyu Gezershyaft Mitt Bethile Renktel Haftung

Title:

【発明の名称】無段変速機のためのスリップ調整装置

Document Type and Number:

Japanese Patent JPH08511330

Kind Code:

A

Abstract:

PCT No. PCT/DE95/00425 Sec. 371 Date Apr. 8, 1996 Sec. 102(e) Date Apr. 8, 1996 PCT Filed Mar. 29, 1995 PCT Pub. No. WO95/27159 PCT Pub. Date Oct. 12, 1995For an electro-hydraulically actuable continuously variable belt transmission, the selected contact pressure at the movable conical pulley discs must be of such a magnitude that the chain, the force transmitting belt or the like does not slip. On the other hand, the contact pressure should not be too great for a high efficiency of the transmission to be achieved at every operating point. The invention reliably prevents slippage of the belt (chain, force transmitting belt or the like) by controlling the belt slip. The mean contact pressure is thereby reduced. As a result, there is a decrease in the mechanical and hydraulic losses at the transmission. A variant of the invention includes an embodiment of a rotational-speed sensor which makes it simultaneously possible to measure the axial position of the pulley disc(s). As a result, there is a reduction in the additional complexity required for slip control compared to the belt-tension control.

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