Variable Induction System: Description and Operation

VARIABLE RESONANCE INDUCTION SYSTEM (VRIS)

VRIS System:

VRIS Operation:

Torque Curve Chart:

VRIS Shutter Valves:

DESCRIPTION
The inside of the dynamic chamber is divided into two sections, interconnected by two shutter valves and connecting pipes for variable resonance induction operation.This system opens and closes the shutter valves according to the engine speed to improve the charging efficiency by utilizing the pressure waves of the intake air.There are two vacuum chambers under the left bank of the intake manifold that are used to supply constant vacuum to the VRIS shutter valve actuators during wide-open throttle operation and other low-vacuum, low-speed situations.

VRIS Operation:

OPERATION