| 摘要 |
<p>A hydraulically servocontrolled transmission (7) for a road vehicle (1) provided with an internal combustion engine (5); the servocontrolled transmission (7) displays: a servocontrolled mechanical gearbox (12) operated by at least one first hydraulic actuator (16, 17); a servocontrolled clutch (15) operated by at least one second hydraulic actuator (18); a hydraulic circuit (19) comprising a hydraulic accumulator (21), which contains pressurised control fluid which is used by the hydraulic actuators (16, 17, 18), and a pump (22), which is directly operated by the internal combustion engine (5) to supply pressurised control fluid to the hydraulic accumulator (21); a park-lock device (24) operatable to block the rotation of the driving wheels (3); and a control unit (11), which, when the internal combustion engine (5) is turned off, uses the remaining pressure of the control fluid within the hydraulic accumulator (21) to bring the servocontrolled mechanical gearbox (12) in a neutral position.</p> |
