PA Emissions Inspection

What health problems can pollution cause? Respiratory issues What percent of air pollution is caused by vehicles? 20% How much less air pollution do we have now than in the 1960s? (%) 98% less What is the average thermal efficiency? (%) 20% Where does 80% of the rest of the fuel go to? Friction, heat, and emissions What are the 5 major pollutants? Hydrocarbons (HC), Carbon monoxide (CO), Oxides of nitrogen (NOx), Sulfur dioxide (SO2), and particulate matter What are hydrocarbons? Unburned fuel of carbon and hydrogen What are hydrocarbons emitted through? Incomplete combustion and fuel evaporation What are hydrocarbons caused by? Misfire, rich, ignition timing, engine deficiencies, and fuel injectors What has lowered hydrocarbons? OBD 2, component controls, fuel delivery, ignition, emissions system, and EVAPs Can you see or smell carbon monoxide? No Is carbon monoxide harmful or nonharmful? Harmful How is carbon monoxide made? Incomplete burning of fuel What is carbon monoxide caused by?` rich, dirty air filter, fuel injectors, high fue