Honda 1997 Accord Wagon Owner's Manual page 196

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
dinitrogen (N ), and water vapor.
2
Exhaust Gas Recirculation
(EGR) System
The Exhaust Gas Recirculation
(EGR) system takes some of the
exhaust gas and routes it back into
the intake manifold. Adding
exhaust gas to the air/fuel mixture
reduces the amount of NOx
produced when the fuel is burned.
Replacement Parts
The emissions control systems are
designed and certified to work
together in reducing emissions to
Technical Information
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
),
2
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.
Three-Way Catalytic
Converter
The three-way catalytic converter
contains precious metals that
serve as catalysts, promoting
chemical reactions to convert the
exhaust gases without affecting
the metals. The catalytic converter
is referred to as a three-way
catalyst, since it acts on HC, CO,
and NOx. A replacement unit
must be an original Honda part or
its equivalent.
THREE-WAY CATALYTIC CONVERTER