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Air Pollution: Types and Sources of Air Pollution Nitrogen and Sulfur Oxides Carbon Oxides and Hydrocarbons Ozone Formation of Photochemical Smog Electronic Control Unit: The Electronic Fuel Injection system consists of three basic subsystems:- The electronic control system determines basic injection quantity based upon electrical signals from the air flow meter and engine rpm. The fuel delivery system maintains a constant fuel pressure on the injector. This allows the ECU to control the fuel injection duration and deliver the appropriate amount of fuel for engine operating conditions.
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Air Pollution:- Chemicals added to the atmosphere by natural events or human activities in high enough concentrations to be harmful
Two categories:- Primary Air Pollutant
Humans are the main cause of air pollution. Industry, including factories and power plants, burn large quantities of fuel. Burning coal and petroleum releases sulfur oxides and nitrogen oxide into the air. Airplanes, boats, and cars burn petroleum, releasing carbon monoxide and carbon dioxide.
©2009 abcteach.com
The waste in landfills releases methane. Sulfur oxides, carbon monoxide and carbon dioxide, and methane all have a very negative effect on air quality. These pollutants can also contribute to the greenhouse effect.
©2009 abcteach.com
o Particulate Material
o Nitrogen Oxides
o Sulfur Oxides
o Carbon Oxides
o Hydrocarbons
o Ozone
- 1 st^ **smog related deaths were in London in 1873; death toll 500 people; can you imagine how much worse the atmosphere is now?!