Device for hydraulically adjusting the angle of rotation of a shaft relative to a driving wheel

A device for a hydraulic adjustment of an angular position of a shaft relative to a drive pinion, said device comprising a plate fixed to the shaft to cooperate with the drive pinion for adjusting the angular position

• wherein
• at least one ring-segment shaped section is arranged in the plate,
• a dividing means is arranged on the drive pinion for dividing the shaped section into two separate chambers sealed relative to each other,
• a means is provided for a selective hydraulic pressurization of the chambers for adjusting the angular position of the drive pinion relative to the shaft
• the drive pinion comprises two spaced walls that are connected to each other, and the plate is arranged between these walls,
• the shaped section is configured as a slot and the dividing means is in contact with the walls while extending through the slot,
• the dividing means is cylindrical in shape and comprises a sealing means on an outer peripheral surface.