| 摘要 |
<p>An infinitely variable transmission for a device with an internal combustion engine, provided with an endless transmission member (14) which has been looped over two pulleys, (2,3;8,9) each having a groove situated between conical sheaves, (2,3;8,9) at least one of which in each pulley is axially displaceable through an associated hydraulic cylinder, (4, 12) and also provided with a first control valve (40) for regulation of the fluid pressure in the cylinder of the driven pulley (8,9) and in the supply line to a second control valve (20), the latter valve being intended for adjustment of the transmission ratio by regulation of the amount of fluid supplied to and discharged from the cylinder (4) of the driving pulley, (2,3) wherein means (71) have been provided for the operation of the first control valve (40) which depend on the pressure of the gas drawn in by the internal- combustion engine inasmuch as upon an increase of this pressure (a lower vacuum), the fluid pressure in the cylinder (12) of the driven pulley (8,9) rises.</p> |
