| 摘要 |
<p>The invention relates to a control system for a continuously variable transmission (1) that includes a primary and a secondary pressure cylinder (7, 8) and hydraulic means for realising a primary pressure (Ppri) in the primary cylinder (7) and a secondary pressure (Psec) in the secondary cylinder (8), which hydraulic means comprise: a hydraulic pump (10) capable of supplying a flow of fluid to a main hydraulic line (12) of the hydraulic means, an adjustable line pressure valve (13) capable of controlling a line pressure (Pline) in the main line (12), at least one further adjustable pressure valve (16, 18, 22) that is connected to the main line (12) and a pressure cylinder (7; 8) and is capable of controlling the pressure (Ppri; Psec) in the respective cylinder, and a switch (20) either capable of switching the further adjustable pressure valve (22) between the said pressure cylinders (7, 8) or capable of switching a general valve control means between said one adjustable pressure valve (16; 18) and yet a further adjustable pressure valve (16; 18) of the hydraulic means.</p> |
