Patent ID: 7841253
Filing Date: 2010-11-30
Classification: F16H,Y10T

Abstract:
1. A servo-assisted gearshift control device for a motor-vehicle dual-clutch transmission including a gearbox with six or seven forward gears and reverse gear housed in a gear case, the device comprising: four shift forks each slidable among a first engagement position, a second engagement position and an intermediate neutral position between the two engagement positions, and an operating unit comprising four double-acting hydraulic actuators identical to each other and arranged to control each the displacement of a respective shift fork among said first and second engagement positions and said neutral position; wherein each hydraulic actuator comprises an elongated plunger having a recess on its cylindrical side surface and wherein each shift fork comprises a nose engaging in the recess of the plunger of a respective hydraulic actuator, whereby the translational movement of each hydraulic actuator is transmitted to the associated shift fork.