Air filtered through the air cleaner passes through the volume air flow meter and the amount
flowing to the air intake chamber is determined according to the throttle valve opening in the
throttle body and the engine speed.
The volume air flow meter measures the intake air flow by the opening of the measuring plate in
response to the volume of intake air to the engine.
Located in the throttle body is the throttle valve, which regulates the volume of intake air to the
engine. Intake air controlled by the throttle valve opening is distributed from the air intake
chamber to the manifold of each cylinder and is drawn into the combustion chamber.
At low temperatures the air valve opens and the air flows through the air valve and the throttle
body, into the air intake chamber. During engine warning up, even if the throttle valve is
completely closed, air flows to the air intake chamber, thereby increasing the idle speed (first idle
operation).
The air intake chamber prevents pulsation of the intake air, reduces the influence on the volume
air flow meter and increases the accuracy of the measurement of the intake air volume. It also
prevents intake air interference in each cylinder.
AIR INDUCTION SYSTEM
–ENGINE MFI SYSTEM
EG2–161
To Next Page
Loading...
