Relief Valve - Honda Prelude 1993 Service Manual

System
Power
Description
Steering Speed Sensor (cont'd)
One-way Valve (ln Power Steering Speed
Sonsorl
Wh6n the car is moving at high speed, negative
pressure develops at the sensor inlet because the
power steering speed sensor is pumping faster than the
fluid can be supplied. To compensate for this, the outlet
and inlet ports are connected internslly by a passage
containing a one-way valve that lets output tluid recir
culate to the inl€t pon to equalize pressure.
Driving at Hlgh Speed:
Relief Valve (ln Power Steering Speed Sensorl
When the car is moving in reverse, the power steering
speed sensor also turns backward and pumps tluid in
the opposite direction. To avoid building up pressure in
the reaction chambers that would increase steering ef-
ton while driving in reverse, the inlet and outlet-ports
are connected by a second internal passage containing
a relief valve that allows the tluid to recarculate.
Driving in Reve.se:
ONE.WAY VALVE
ROTORS
RELIEF VALVE
1 7-1 4