ammonia
Ammonia
Ozone
A secondary pollutant is not directly emitted, it is formed in the atmosphere when primary pollutants are mixed as through chemical and photochemical reaction. For example, a secondary pollution would be ozone which is formed when hydrocarbons and nitrogen oxides combine in sunlight
emissions and exhaust
The most toxic 'metal' pollutant would be lead.Other pollutants present in the automobile exhaust are:HydrocarbonsNitrogen oxidesCarbon MonoxideCarbon Dioxide
D. Richard Sears has written: 'Air pollutant emission factors for military and civil aircraft' -- subject(s): Measurement, Aircraft exhaust emissions, Pollution, Air
Car exhaust
A primary pollutant is emitted directly into the atmosphere, so exhaust, smoke and fumes are all primary pollutants. Acid rain is a secondary pollutant.
Russell W Claus has written: 'Effect of primary zone equivalence ratio on pollutant formation' -- subject(s): Aircraft exhaust emissions, Testing, Aircraft gas-turbines
Chemistry! The actions of the engine emissions and the exhaust system all work together to change the emissions from bad emissions to good emissions, if sulfur smell is considered good! The burnt fuel is mixed and remixed in the engine to ensure a good burn of the fuel. The resultant pollutant is then passed through the exhaust catalytic converter and its chemistry is changed to a less pollutant chemical. All the chemistry terms mean a lot to the designers and the EPA but to most of us it takes a large amount of equipment we cant afford to check the emissions amounts. Our best check is the smell. When we smell the sulpher it just means the car is doing what its supposed to do. If you want the chemistry specifics there are loads of papers on the subject. Just do a search for CAR EMISSIONS. They should fill your nights with reading material and all types of letters and numbers to impress your friends.
Surface ozone is produced from vehicle exhaust. It is a pollutant.
No. The muffler is a passive component in the exhaust emissions system.
The EGR, or Exhaust Gas Recirculation Valve, is contained in the circuit on an internal combustion engine, is in place as an emissions reducing device. Exhaust gasses are routed back into the engine intake to be reburned, thereby reducing unburned hydrocarbon and noxious gas emissions. The system turns on and off at certain times, deemed critical by the engine manufacturer and the federal government mandates. == ==