Contents: 1. Forced crankcase ventilation…⇓ 2. Fuel vapor recovery system ⇓ 3. Exhaust gas cleaning system ⇓
Your Hyundai vehicle is equipped with emission control systems to meet all the restrictions that apply in your region (country).
There are three toxicity reduction systems.
- (1) Forced crankcase ventilation system
- (2) Fuel vapor recovery system
- (3) Exhaust gas cleaning system
To ensure proper operation of the emission control systems, it is recommended that these systems be checked and serviced by an authorized Hyundai dealer at the intervals specified in the periodic maintenance chart in the Service Book.
1. Forced crankcase ventilation system
The Positive Crankcase Ventilation system is designed to prevent air pollution caused by blow-by gases. This system provides fresh air to the engine crankcase through the air filter. Inside the crankcase, fresh air mixes with blow-by gases and passes through the Positive Crankcase Ventilation (PCV) valve into the intake system.
(The article is copied from this website HyundaiBook.ru)
2. Fuel vapor recovery system
The fuel vapor recovery system is designed to prevent fuel vapor from escaping into the atmosphere.
Adsorber
When the engine is not running, the fuel vapors that accumulate in the fuel tank are adsorbed and stored in the canister. When the engine is running, the adsorbed fuel vapors from the canister enter the intake system through the canister purge solenoid valve.
Evaporative Evaporative Canister Purge Solenoid Valve
The purge solenoid valve of the adsorber is controlled by the electronic control unit; when the engine coolant temperature is low and the engine is idling, it closes to prevent evaporated fuel from entering the intake manifold. After the engine warms up, during normal driving conditions, it opens and allows evaporated fuel to enter the intake manifold,
3. Exhaust gas cleaning system
The exhaust gas cleaning system is a highly efficient system that controls the composition of exhaust gases and maintains optimum engine performance.