Kia Niro: Crankcase Emission Control System / Evaporative Emission Control System Schematic diagrams
| Schematic Diagram |
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1. Air cleaner 2. Delivery pipe & injector 3. Engine 4. Purge control solenoid valve (PCSV) 5. Fuel tank air filter |
6. High pressure fuel pump 7. Fuel filler hose 8. Fuel filler cap 9. Fuel tank 10. Low pressure fuel pump |
Canister
Canister is filled with charcoal and absorbs evaporated vapor in fuel tank. The gathered fuel vapor in canister is drawn into the intake manifold by the ECM/PCM when appropriate conditions are set.
Purge Control Solenoid Valve (PCSV)
Purge Control Solenoid Valve (PCSV) is installed in the passage connecting canister and intake manifold. It is a duty type solenoid valve and is operated by ECM/PCM signal.
To draw the absorbed vapor into the intake manifold, the ECM/PCM will open the PCSV, otherwise the passage remains closed.
Fuel Filler Cap
A ratchet tightening device on the threaded fuel filler cap reduces the chances of incorrect installation, which would seal the fuel filler. After the gasket on the fuel filler cap and the fill neck flange contact each other, the ratchet produces a loud clicking noise indicating the seal has been set.
Positive Crankcase Ventilation (PCV) Valve Repair procedures
Removal
1.
Disconnect the vapor hose (A).
2.
Remove the PCV valve (B).
Inspection
1.
Insert a thin ...
Evaporative Emission Control System Description and operation
Description
Evaporative Emission Control System prevents fuel vapor stored in fuel tank from
vaporizing into the atmosphere. When the fuel evaporates in the fuel tank, the vapor
passe ...
Other information:
Kia Niro 2017 (DE HEV) Service Manual: Inspection mode procedures
Procedure for entering engine
forced activation mode
If the engine needs to be running constantly while the vehicle is stopped to
inspect emission gas or perform maintenance on the vehicle, follow below procedure
to enter engine forced activation mode.
1.
Place ...
Kia Niro 2017 (DE HEV) Service Manual: Exhaust Heat Recovery System(EHRS) Description and operation
Description and Operation
During cold start or in winter, the fuel efficiency can be improved by heating
up the coolant with the exhaust gas heat discharged after combusting the engine.
When the engine has been sufficiently warmed up, the valve on the passage of exhaust
gas is ope ...