Hyundai Santa Fe: 2. Evaporative emission control (including ORVR: Onboard Refueling Vapor Recovery) 
system - Emission control system - MaintenanceHyundai Santa Fe: 2. Evaporative emission control (including ORVR: Onboard Refueling Vapor Recovery) system

The Evaporative Emission Control System is designed to prevent fuel vapors from escaping into the atmosphere.

(The ORVR system is designed to allow the vapors from the fuel tank to be loaded into a canister while refueling at the gas station, preventing the escape of fuel vapors into the atmosphere.)

Canister

Fuel vapors generated inside the fuel tank are absorbed and stored in the onboard canister. When the engine is running, 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 controlled by the Engine Control Module (ECM); when the engine coolant temperature 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.

1. Crankcase emission control system
The positive crankcase ventilation system is employed to prevent air pollution caused by blow-by gases being emitted from the crankcase. This system supplies fresh filtered air to the crankcase through ...

3. Exhaust emission control system
The Exhaust Emission Control System is a highly effective system which controls exhaust emissions while maintaining good vehicle performance. Vehicle modifications This vehicle should not be modified. ...

See also:

Thermostat. Repair procedures
Removal and Installation Removal of the thermostat would have an adverse effect, causing a lowering of cooling efficiency. Do not remove the thermostat, even if the engine tends to overheat. 1. Drain engine ...

26 Brake Control Solenoid Valve(26/B_VFS). Repair procedures
Inspection 1. Turn ignition switch OFF. 2. Remove the air duct. 3. Disconnect the solenoid valve connector(A). 4. Measure resistance between sensor signal terminal and sensor ground terminal. 5. Check ...

Cruise Control Switch. Schematic Diagrams
Circuit Diagram ...