Nissan Murano: System / Variable Induction Air System

Nissan Murano (Z52) 2015-2024 Service Manual / Engine / Engine Control System :: Vq35de / System Description / System / Variable Induction Air System

System Description

SYSTEM DIAGRAM

SYSTEM DESCRIPTION

In the medium speed range, the ECM sends the ON signal to the VIAS control solenoid valve. This signal introduces the intake manifold vacuum into the power valve actuator and therefore closes the power valve. Under this condition, the pressure waves of the exhaust stroke do not disturb the pressure waves of the intake stroke of each opposite bank. Therefore, charging efficiency is increased together with the effect of the long intake passage.

However, in the high speed range, the ECM sends the OFF signal to the VIAS control solenoid valve and the power valve is opened. Under this condition, the pressure waves of intake stroke are resonant with those of each opposite bank exhaust stroke. Therefore, charging efficiency is also increased.

In addition, both valves 1 and 2 are opened or closed in other ranges mentioned above. Thus maximum charging efficiency is obtained for the various driving conditions.

VACUUM HOSE DRAWING

Power valve actuator 1 VIAS control solenoid valve 1 VIAS control solenoid valve 2
Power valve actuator 2 Intake manifold collector    

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