Kia niro 2023, Руководство пользователя, Страница: 414 / 440

Maintenance
70 8
Emission control system
1. Crankcase emission control
system
The positive crankcase ventilation sys
-
tem is employed to prevent air pollution
caused by blow-by gases being emitted
from the crankcase. This system sup
-
plies fresh filtered air to the crankcase
through the air intake hose. Inside the
crankcase, the fresh air mixes with blow-
by gases, which then pass through the
PCV valve into the induction system.
2. Evaporative emission control
system
The Evaporative Emission Control Sys
-
tem is designed to prevent fuel vapors
from escaping into the atmosphere.
Canister
Fuel vapors generated inside the fuel
tank are absorbed and stored in the on-
board canister. When the engine is run
-
ning, the fuel vapors absorbed in the
canister are drawn into the surge tank
through the purge control solenoid
valve.
Purge Control Solenoid Valve
(PCSV)
The purge control solenoid valve is con
-
trolled by the Engine Control Module
(ECM); when the engine coolant tem
-
perature is low during idling, the PCSV
closes so that evaporated fuel is not
taken into the engine. After the engine
warms up during ordinary driving, the
PCSV opens to introduce evaporated
fuel to the engine.
3. Exhaust emission control sys
-
tem
The Exhaust Emission Control System is
a highly effective system which controls
exhaust emissions while maintaining
good vehicle performance.
Engine exhaust gas precautions
(carbon monoxide)
僅 Carbon monoxide can be present with
other exhaust fumes. Therefore, if you
smell exhaust fumes of any kind
inside your vehicle, have it inspected
and repaired immediately. If you ever
suspect exhaust fumes are coming
into your vehicle, drive it only with all
the windows fully open. Have your
vehicle checked and repaired immedi
-
ately.
僅 Do not operate the engine in confined
or closed areas (such as garages) any
more than what is necessary to move
the vehicle in or out of the area.
僅 When the vehicle is stopped in an
open area for more than a short time
with the engine running, adjust the
ventilation system (as needed) to
draw outside air into the vehicle.
僅 Never sit in a parked or stopped vehi
-
cle for any extended time with the
engine running.
僅 When the engine stalls or fails to start,
excessive attempts to restart the
engine may cause damage to the
emission control system.
WARNING
Engine exhaust gases contain carbon
monoxide (CO). Though colorless and
odorless, it is dangerous and could be
lethal if inhaled. Follow the instructions
on this page to avoid CO poisoning.