Honda 1994 Civic Coupe, Онлайн руководство пользователя, Страница: 190 / 210

Emissions Controls
Exhaust Emission Controls
The exhaust emission controls
include three systems: PGM-FI,
Ignition Timing Control, and
Three-Way Catalytic Converter.
These three systems work
together to control the engine's
combustion and minimize the
amount of HC, CO, and NOx that
comes out the tailpipe. The
exhaust emission control systems
are separate from the crankcase
and evaporative emission control
systems.
PGM-FI System
The PGM-FI System uses a
sequential multiport fuel
injection. It has three
sub-systems: Air Intake, Engine
Control, and Fuel Control. The
Engine Control Module (ECM)
uses various sensors to
determine how much air is going
into the engine. It then controls
how much fuel to inject under all
operating conditions.
Ignition Timing Control System
This system constantly adjusts
the ignition timing, reducing
the amount of HC, CO and
NOx produced.
Three-Way Catalytic Converter
The Three-Way Catalytic
Converter is in the exhaust
system. Through chemical
reactions, it converts HC, CO, and
NOx in the engine's exhaust to
carbon dioxide (CO
2
), dinitrogen
(N
2
), and water vapor.
Replacement Parts
The emissions control systems
are designed and certified to work
together in reducing emissions to
levels that comply with the Clean
Air Act. To make sure the
emissions remain low, you should
use only new Genuine Honda
replacement parts or their
equivalent for repairs. Using
lower quality parts may increase
the emissions from your car.
The emissions control systems
are covered by warranties
separate from the rest of your
car. Read your warranty manual
for more information.
Technical Information
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