Emissions final study guide questions with certified solutions
Emissions final study guide questions with certified solutions Hydrocarbons Raw or unburnt fuel. Hydrogen + carbon atoms. 3 emissions that need to be reducedon vehicles. Hydrocarbons, Carbon Monoxide, Oxides of Nitrogen. Carbon Monoxide "CO" is produced when no burn takes place in the combustion chamber. Rich mixture produces more CO. Oxides of Nitrogen "NOx" tailpipe emission that has a fast burn time in the combustion chamber. Air is made up of 78% nitrogen, 21% oxygen, 1% other. Carbon Dioxide "CO2" is created during the combustion process. We exhale C02. Global warming gas. Perfect combustion Does not produce and emit HC, CO, or NOx. Water and CO2 are instead emitted from tailpipe. Incomplete combustion Tailpipe emits HC, CO, and NOx along with water and CO2. Smog Smoke + fog. Photo Chemical Smog HC + NOx + sunlight = photo chemical smog. EPA Enviromental Protection Agency FTP Federal Test Procedures SHED Sealed Housing Evaporative Determination CAFE Corporate Average Fuel Economy PCV Positive Crankcase Ventilation HC in PCV Largest portion of blowby gasses. PCV engine loads WOT "most blowby", Cruise, Idle, Decel "least blowby". 2 ways to heat PCV Electrically and Coolant PCV testing 1.Clean and I.D.
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