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: Fuel Pressure Sensor (FPS) Description and operation
Description
Installed on top of the low pressure fuel pump, the Fuel Pressure Sensor (FPS)
measures the pressure in the low pressure fuel line.
Based on the fuel pressure measured by the FPS and the amount of fuel consumed,
the fuel pump control module (FPCM) determines whether to ...
Kia Niro 2017 (DE HEV) Service Manual: Engine Coolant Temperature Sensor (ECTS) Description and operation
Description
Located in the engine coolant passage of the cylinder head, Engine Coolant Temperature
Sensor (ECTS) detects the engine coolant temperature. The ECTS uses a thermistor
with resistance in proportion to the temperature.
The electrical resistance of the ECTS decreases as ...