Device for determining belt rotational speed of continuously variable transmission
US5643116A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 8, 1995 |
| Grant date | Jul 1, 1997 |
| Priority date | — |
| Expiry date | Nov 8, 2015 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01P3/60
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A device is proposed to determine the rotational speed of a transfer element (3) arranged in variable-diameter pulleys (1, 2) of a continuously variable transmission system, the said device Consisting of a sliding stock (4, 15), with a sensor (10, 16) which is supported on the transfer element (3) on the inner sides of the variable-diameter pulleys, which sliding stock is connected to the transmission case (8) by a spring (6) loaded rocker arm (5) mounted in a swivelling joint (7). With the knowledge of the peripheral speed of the transfer element (3), the rotary speeds (N1, N2) of the set of variable-diameter pulleys (1, 2) and the effective transmission radii (r1, r2), the slippage can be determined between the transfer element (3) and the sets of variable-diameter pulleys (1, 2). By comparing the previously established maximum amounts of slippage with the detected amounts of slippage, the maximum requisite pressure applied by the axially shifting variable-diameter pulley (9) in each set of variable-diameter pulleys (1, 2) can be adjusted to the optimum amount (see FIG. 1).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.