Description

The emission control system consists of three main systems.

• The crankcase emission control system prevents crankcase gases from being released into the atmosphere. This system recirculates the gas back to the intake manifold (closed-type crankcase ventilation).
• The evaporative emission control system prevents fuel vapor from being released into the atmosphere. This system stores fuel vapor in the canister and purges it into the engine to be burned under proper operating conditions.
• The exhaust emission control system converts the three pollutants [hydrocarbons (HC), carbon monoxide (CO) and nitrogen oxides (NOx)] into harmless substances using a three-way catalytic converter.