Description and Operation: Description

Variable Intake Solenoid (VIS) Valve is installed on the intake manifold and is used to improve 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 (1 Of 2)

   Courtesy of HYUNDAI MOTOR CO.
   Fig 2: Identifying Variable Intake Solenoid Valve (2 Of 2)

   Courtesy of HYUNDAI MOTOR CO.