Variable Induction Control Valve: Description and Operation

Intake Air (IA) Bypass Control System




When the engine is running, the Intake Air (IA) Bypass control valve sends air to the injectors.

Intake Manifold Runner Control (IAB) System




Satisfactory power performance is achieved by closing and opening the Intake Manifold Runner Control (IAB) control valves. High torque at low engine speed is achieved when the valves are closed, whereas high power at high engine speed is achieved when the valves are opened.