Dacia Solenza 2004, Repair Manual

Page: 340 / 891

36
STEERING ASSEMBLY
36 - 7
General
CONSTANT POWER STEERING (CPS)
1. Power steering pump
2. Power steering box
3. High pressure piping
4. Low pressure piping
5. Oil reservoir
6. Rotary valve
7. Pressure controller
8. Accessories belt
9. Rigid ducts
10. Steering box working
chambers
The working principle of the
Constant Power Steering (CPS
) system, consists in steering
hydraulic assistance by hydraulic fluid (oil) passing through a drawer (the two chambers ( 10)
from steering box) with double effect and through a rotary valve ( 6 ) that is distributing the fluid
through two pipes (
9
) towards the steering box (
2
) subject to the full turning direction of the
directing wheels.
The hydraulic assistance is ensured by a pressure controller ( 7 ) attached on the high pressure
pipe
(3)
and connected to the injection computer.
The injection computer is receiving information, during power steering operation, about the
pressure value in “high pressure circuit” ( which may be seen by means of the CLIP tester). The
pressure value in “high pressure circuit” is depending of the pomp conducted pressure as well as
of the used oil fluidity.
The more pressure is high, the power steering pump is absorbing more additional energy.
The power steering pump (
1) is continuously providing in the circuit a constant hydraulic fluid
(oil) flow, regardless the engine RPM, based on the fact that pump is driven by the accessories
belt (
8
). In this case, the system has the generic denomination of “
Open Center System “
REMARK:
The steering is not to be fully locked at maximum more than 45 seconds at an engine
RPM of 2500 rot/min (risk of power steering pump damaging).
36054
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