Hyundai Sonata: 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 warmsup 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 th ...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 modif ...See also:
Engine oil
Vehicle equipment
All standard, country-specific and optional
equipment that is offered in the model series is
described in this chapter. Therefore, equipment
is also described that is not avai ...
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 th ...
Engine Oil
NOTE:
Changing the engine oil should be done by an Authorized Mazda Dealer.
Recommended Oil
Use SAE 5W-20 engine oil.
Oil container labels provide important information.
A chief contribution this ...