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GENERAL INFORMATION
EMISSION CONTROL SYSTEMS
SOURCE OF EMISSIONS
The combustion process produces carbon monoxide (CO), oxides of nitrogen (NO
monoxide, oxides of nitrogen and hydrocarbons is very important because, under certain conditions, they react to form
photochemical smog when subject to sunlight. Carbon monoxide does not react in the same way, but it is toxic.
Honda Motor Co., Ltd. utilizes various systems (page 1-87) to reduce carbon monoxide, oxides of nitrogen and hydrocarbons.
CRANKCASE EMISSION CONTROL SYSTEM
The engine is equipped with a closed crankcase system to prevent discharging crankcase emissions into the atmosphere.
Blow-by gas is returned to the combustion chamber through the air cleaner and throttle body.
1-86
THROTTLE BODY
FRESH AIR
BLOW-BY GAS
) and hydrocarbons (HC). Control of carbon
X
AIR CLEANER HOUSING
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