Three-way catalytic converter (TWC)
The three-way catalytic converter converts hydrocarbons (HC), carbon monoxide (CO) and nitrogen oxides (NOx) contained in the exhaust gases into carbon dioxide (CO ₂), nitrogen (N₂), nitrogen (N₂) and water vapor.
Positive Crankcase Ventilation (PCV) System
The PCV valve prevents crankcase gases from escaping into the atmosphere by directing them into the intake manifold.
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