Variable Intake Solenoid (VIS) Valve: Description
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.
- Low/Middle Speed: VIS Valve Close → Resonation Effect → Improving Intake Efficiency
- High Speed: VIS Valve Open → Improving Intake Inertia Effect → Improving Intake Efficiency