Vehicle exhaust and emissions control systems rely on dedicated components to reduce environmental pollutants and optimize engine efficiency. Match each emissions control device on the left with its primary operational function on the right.
- Oxygen () SensorMeasures unburned oxygen in the exhaust to allow the engine computer to adjust the air-fuel mixture
- Catalytic ConverterUses catalyst materials to chemically convert harmful exhaust gases into less toxic compounds
- Positive Crankcase Ventilation (PCV) ValveReroutes blow-by gases from the engine crankcase back into the intake manifold for re-combustion
- Evaporative Emission Control (EVAP) CanisterTraps and stores fuel tank vapors until they can be purged into the engine intake
Answer
Oxygen Sensor matches measuring unburned exhaust oxygen for air-fuel mixture adjustments; Catalytic Converter matches chemically converting harmful exhaust gases into less toxic compounds; PCV Valve matches rerouting blow-by gases from the crankcase to the intake; EVAP Canister matches trapping fuel tank vapors until purged into the intake.
Each component performs a specific function within modern exhaust and emission systems: the Oxygen Sensor provides exhaust oxygen data to regulate fuel delivery; the Catalytic Converter chemically cleans exhaust gases; the PCV Valve ventilates crankcase vapors to the intake; and the EVAP Canister stores evaporative fuel fumes until they can be burned.
Step-by-Step Solution
Key Concept
Primary roles and operation of automotive exhaust and emissions control components.
Estimated Time:45s