Air Intake System Description

Air Intake System Description

The main components of the air intake system are air cleaner (1), air cleaner outlet hose (2), electric throttle body (3) (for the details, refer to Electric Throttle Control System Description Electric Throttle Control System Description
), intake manifold tuning (IMT) valve (4) which switches the distributor pipe length of intake manifold to "A" or "B" (for the details, refer to Description and Operation IMT System Description
) and intake manifold (5).

The air (by the amount corresponding to throttle valve (6) opening and engine speed) is filtered by the air cleaner, distributed by the intake, and finally drawn into each combustion chamber. Electric throttle body is not equipped with IAC valve for idle speed control. Idle speed control is done by the throttle actuator (7) which opens/closes the throttle valve. (For the details, refer to Electric Throttle Control System Description Electric Throttle Control System Description
)