Emission Control System

In automotive applications, most_______________ is/are a by-product of combustion and is/are emitted from the exhaust system.

• Fuel
• Air
• Emissions
• Catalys

Today's emissions come from the vehicle's:

• Fuel system
• Crankcase
• Exhaust
• All of above

____________ is created when raw fuel evaporates into the atmosphere or when it does not burn at all in the combustion chamber and is exhausted out the tailpipe.

• Carbon dioxide
• Hydrocarbons
• Carbon monoxide
• Sulfur

______________ is a colorless, odorless, tasteless, flammable, and highly toxic gas.

• Carbon dioxide
• Hydrocarbons
• Carbon monoxide
• Sulfur

____________ is a by-product of complete combustion and is not pollution, along with water.

• Carbon dioxide
• Hydrocarbons
• Carbon monoxide
• Sulfur

The evaporative emission (EVAP) system is designed to ensure that hydrocarbons are released into the atmosphere.

• True
• False

Tech A says that the positive crankcase ventilation (PCV) system removes blow-by gases from the crankcase in a manner that is not harmful to the environment. Tech B says that the PCV system prevents the build-up of crankcase pressure. Who is correct?

• Tech A
• Tech B
• Both Tech A and B
• Neither Tech A nor B

Tech A says that the exhaust gas recirculation (EGR) valve does not function at idle. Tech B says that the EGR valve will not function during wide-open throttle (WOT). Who is correct?

• Tech A
• Tech B
• Both Tech A and B
• Neither Tech A nor B

Tech A says that the more oxygen the engine uses means the engine is running a rich mixture. Tech B says that the less oxygen the engine uses means the engine is running a lean mixture. Who is correct?

• Tech A
• Tech B
• Both Tech A and B
• Neither Tech A nor B

A catalytic converter is one of the most effective emission control devices on a vehicle for reducing HC, CO, and NOX emissions.

• True
• False