Crankcase Emission Control System
To prevent crankcase emissions, your car is equipped with a Positive
Crankcase Ventilation (PCV) System, which routes blowby gases from
the crankcase. through the PCV valve and intake manifold, into the
combustion chamber.
Engine Exhaust Controls
The engine exhaust emission control systems are designed to control
combustion during idle, acceleration, cruise, and deceleration. These
systems are entirely separate from the crankcase and evaporative
emission control systems described previously.
PGM-FI System
The PGM-FI System on this model is a sequential multiport fuel
injection. It consists of three independent subsystems; Air Intake.
Electronic Control and Fuel Control, thus allowing more accurate
control of air/fuel ratios under all operating conditions. The Electronic
Control Module (ECM) detects the amount of air drawn into the
cylinders and determines the amount of fuel to be injected to provide
the optimum air/fuel ratio for all engine needs.
Ignition Timing Control System
This system automatically controls the ignition timing to reduce the
amount of HC and NO
X
.
Three-way Catalytic Converter
The three-way catalytic converter is used to convert hydrocarbons
(HC), carbon monoxide (CO) and oxides of nitrogen (NO
X
) in the
exhaust gas, to carbon dioxide (CO
2
), dinitrogen (N
2
) and water vapor.
Exhaust Gas Recirculation (EGR)
The EGR system is designed to control the formation of oxides of
nitrogen (NO
X
) caused when the fuel mixture burns at high
temperature. It works by recirculating exhaust gas through the
Exhaust Gas Recirculation valve and intake manifold into the
combustion chambers where it reduces peak temperature by diluting
the air/fuel mixture.
