AIR/FUEL MIXTURE RATIO CONTROL SYSTEM
[Multiport Fuel Injection (MFI) System]
The MFI system employs
the signals from the heated oxygen sensor to activate and control the
injector installed in the manifold for each cylinder, precisely regulating
the air/ fuel mixture ratio and reducing emissions.
1. |
Open loop-air/fuel ratio is controlled by
information programmed into the PCM during the manufacturing
process. |
2. |
Closed loop-air/fuel ratio varies by the PCM
based on information supplied by the heated oxygen
sensor. |