Exhaust Emission Control System; Secondary Air Supply System; Three-Way Catalytic Converter - Honda NT700V Deauville Service Manual

GENERAL INFORMATION
EXHAUST EMISSION CONTROL SYSTEM
The exhaust emission control system includes of a pulse secondary air supply system and PGM-FI system.
No adjustment should be made about the exhaust emission control systems. The exhaust emission control system is
separate from the crank case emission control system.
SECONDARY
AIR
SUPPLY SYSTEM
The secondary air supply system introduces filtered air into the exhaust gases i n the exhaust port. Fresh air is drawn into
the exhaust port by the function of the PAIR (Pulse Secondary Air Injection) control valve.
This charge of fresh air promotes burning of the unburned exhaust gases and changes a considerable amount of
hydrocarbons and carbon monoxide into relatively harmless carbon dioxide and water vapor.
The reed valve prevents reverse air flow through the system. The PAlR control valve is operated by the solenoid valve. The
solenoid valve is c o n t r o p h e fresh air passage is openedlclosed according the running condition
(ECT/IAT/TPlMAP sensor and engine revolution).
No adjustments to the secondary air supply system should be made, although periodic inspection of the components is
recom mended
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EXHAUST GAS
THREE-WAY CATAl
YTlC
CONVERTFR
This motorcycle is equipped with a three-way catalytic converter.
q g h chemical reactions, they convert HC, CO and NOx i n
m i n e ' s exhaust to carbon dioxide (COz), dinitrogen (NZ) and water vapor.
No adjustment to these systems should be made although periodic inspection of the components is recommended.
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