Steering gear
and linkage
SYSTEM CONSTRUCTION
• The hydraulic power cylinder is connected to the
middle joint of the rear trailing arms.
• Hydraulic pressure for the rear steering power
cylinder is generated by an oil pump driven by the
rear differential gear. This pressure is controlled by
the power steering hydraulic pressure via the
control valve. In this way, the rear wheel steering
angle is controlled according to the front wheel
steering effort.
The oil pump for the rear wheel steering delivers the
amount of oil proportional to the rear wheel speed.
This allows rear wheel steering angle control
proportional to the vehicle speed at middle and high
speeds [over approx. 50 km/h (31 mph)].
• This construction allows the rear wheels to be
steered in the same phase with the front wheels
when cornering at middle and high speeds, de-
veloping side force at the rear tyres almost simul-
taneously with side force generation at the front
tyres.
Oil reservoir
Power steering oil pump
Rear wheel oil pump
3-28 DRIVE-CONTROL COMPONENTS - 4 Wheel Steering (4WS) System
Steering wheel
Control valve
Power cylinder
Middle joint
Trailing arm
13A0241
To Next Page
Loading...
Need help?
General
