Accord SE Coupe L4-2156cc 2.2L SOHC MFI (1997)
Steering Gear: Description and Operation
STEERING GEARBOX
The rack-and-pinion type steering gearbox has a valve body unit incorporated with the pinion to control the steering fluid pressure. Steering fluid from
the pump is regulated by a rotary valve in the valve body unit and is sent through the cylinder line to the power cylinder, where hydraulic pressure is
applied. The steering fluid in the other side of the power cylinder returns through the cylinder line and valve body unit to the reservoir.
VALVE BODY UNIT
Inside the valve body unit is the valve, which is coaxial with the pinion shaft, and controls the steering fluid pressure. The valve housing is connected
with the fluid line from the pump, the return line to the reservoir, and the two cylinder lines from the respective power cylinder. The pinion shaft is
double - structured with the input shaft connected to the pinion gear, both of which are interconnected with the torsion bar. The pin inserted in the
valve and the pinion shaft groove engage; this allows the pinion shaft to rotate together with the valve. Because of this construction, the difference in
angle in the circumferential direction between the input shaft and the valve becomes larger according to the torsional strength of the pinion or steering
resistance. However, maximum torsion between the shafts is regulated by the engaged splines of the shafts at the pin engagement section to hold the
torsion bar within the set value. This allows the steering system to function as an ordinary rack-and-pinion type steering if the steering fluid is not
pressurized because of a faulty pump.
PRESSURE CONTROL
Low Assist At Higher Speeds:
