EMISSION CONTROL SYSTEM 7-1
SH010A1-E EMISSION CONTROL SYSTEMS (Not all models) Depending upon the market for which the vehicle is destined, the emission control system will comprise one or more of the following emission control devices. (1) Crankcase emission control system (2) Evaporative emission control system (3) Exhaust emission control system In order that the proper functioning of the emis- sion control systems may be ensured, it is recommended that the vehicle is inspected and maintained by an authorized Hyundai dealer in accordance with the maintenance schedule in this manual.
SH000A1-E
7. EMISSION
CONTROL SYSTEM
SH010B1-E
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 by introducing fresh air to the crankcase through the air cleaner where this mixes with blow-by gases and then passes through the PCV valve into the intake manifold from where it subse- quently enters the combustion chamber and is burned.
SH010D1-E
3. EXHAUST EMISSION CONTROL SYSTEM The exhaust emission control system is a highly effective system which controls exhaust emis- sion while maintaining good vehicle performance.
SH010C1-E
2. EVAPORATIVE EMISSION CONTROL SYSTEM
The Evaporative Emission Control System is designed to prevent fuel vapours from escaping into the atmosphere through the fuel tank venti- lation system. Whilst the engine is not running, fuel vapours generated inside the fuel tank are absorbed and stored in a charcoal canister. When the engine is started, the vapours stored in the canister are drawn into the induction system through the purge control solenoid valve and are subse- quently burned. The purge control solenoid valve is controlled by the ECU; when the engine coolant temperature is low or the engine is idling, the purge control valve is closed and fuel vapours remain stored in the canister. Under normal running conditions when the engine is warm, the valve opens and the vapours are drawn into the inlet tract and subsequently burned in the combustion cham- ber. SH020A1-E CATALYTIC CONVERTOR OPERATING PRECAUTIONS
JN70010A
Catalytic Converter
Hyundai Coupe models are fitted with catalytic convertors which require special operating con- siderations. The catalytic convertor serves to oxidize certain noxious elements of the exhaust gases leaving the engine to reduce the level of pollutants emitted from the vehicle and, provided that care is exercised to prevent damage, the catalyst will operate efficiently for the life of the vehicle. It is of the utmost importance that the following information is read and understood by the ve-7
