Variable Intake Solenoid (VIS) Valve: Description: Notes

Variable Intake Solenoid (VIS) Valve is installed on the intake manifold and isolates or not the one bank from the other banks to improve the intake efficiency.

1. Low/Middle Speed: VIS Valve Close --> Resonation Effect --> Improving Intake Efficiency
2. High Speed: VIS Valve Open --> Improving Intake Inertia Effect --> Improving Intake Efficiency
   Fig 1: Identifying Variable Intake Solenoid Valve

   Courtesy of HYUNDAI MOTOR CO.

Fig 2: Identifying Variable Intake Solenoid Valve

Courtesy of HYUNDAI MOTOR CO.