8-VALVE 1.4
ENGINE
FIAT PUNTO TRAINING OUTLINE
Fiat Auto S.p.A.
After Sales Training
As we have said above, the phase variator is made up of a rotor and a stator. The rotor is
equipped with blades and moves due to the effect of the engine oil pressure in the blades
themselves. Two openings (advance and delay openings) are obtained at the sides of each of
the blades: the engine oil may flow into either opening.
The pressure of the oil flowing into an opening pushes the blade on one side, whereas the oil
found in the other opening is drained into the engine head through the solenoid valve (as we
have said above, one of the holes on the solenoid valve is made to communicate with the
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