| 摘要 |
A hydraulic controller (10, 10a, 10b) for a continuously variable transmission (12) is proposed. Using a pump (42), the delivery chambers (24, 26) of a first and second adjusting device (14, 16) are acted upon to alter the transmission ratio of the transmission (12). The valve (36, 36a, 36b), which can be controlled using a pressure drop created at a throttle position (50), serves to control the pressure in the delivery chamber (24). According to the invention, additional means are provided to prevent an adjustment of the transmission (12) in the "low" direction in the (N) operating state and, as necessary, in the (P) and (N) operating states.
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