Variable Intake Manifold Control Motor (V.I. Motor): Description

Variable Intake Manifold Control System increases engine power especially in low engine speed by varying the intake length according to engine rpm and engine load.

It increases the torque by lengthening and shortening the intake length in low and high speed respectively.

Motor Rotation Sensor (MRS) sensors the rotation angle of motor and informs it of ECU.

Fig 1: Locating Variable Intake Manifold Control Motor

Courtesy of KIA MOTORS AMERICA, INC.