to trap the exhaust gas

to trap the fresh charge

to trap the leak off fuel

to trap the fuel vapour

Intet manifold

Exhaust manifold

Catalyst converter

Fuel tank

Canister

Muffler

Catalytic converter

Exhaust gas regulator

In complete combustion

Pitting in the engine parts

Fungus in the cylinder walls

Corrosive Wear of engine parts

Hydro carbon

CO₂

CO

NO_X