Design and Operation
Operating pressure
Return line pressure
Fig. 3
Valve rotor in
operating position
Steering wheel turned
counter-clockwise
Instructions on Design, Operation, Maintenance and Inspection
5
2.2 Forward steering motion to the left (piston with right-handed thread)
J
Inlet slot
K Inlet slot
L Return slot
M Return slot
N Axial groove
O Axial groove
P Return groove
When the steering wheel is turned to the left, the piston will shift to the left (Fig. 3). Therefore,
pressure build-up now takes place in the right-hand cylinder chamber.
The control grooves of the valve rotor are displaced counter-clockwise and allow the oil to flow
through the opened inlet slots (J) to the axial grooves (O) from where there is a connection to the
right-hand cylinder chamber.
The oil from the left-hand cylinder chamber flows to the return grooves (P) of the valve rotor, via
the ball screw thread and the opened return slots (L), and can then freely flow off to the oil tank
through the central bore in the valve rotor and the worm.
To Next Page
Loading...