Variable Intake Solenoid (VIS) Valve: Description

Variable Intake Manifold (VIS) Valve is installed on the intake manifold. It combines or divides the two banks' intake air passages to improve intake efficiency in accordance with the ECM control signal calculated by engine operating condition.

• Low/Middle Speed: Close VIS Valve → No Interference between LH & RH banks → Resonation Effect Maximized → Intake Efficiency Improved
• High Speed: Open VIS Valve → Intake Inertia Effect Maximized → Intake Efficiency Improved
  Fig 1: Identifying Variable Intake Solenoid Valve

  Courtesy of HYUNDAI MOTOR CO.
  Fig 2: Identifying VIS Valve And VIS Valve

  Courtesy of HYUNDAI MOTOR CO.