Growing population extraordinary increase in vehicle numbers and narrow traffic cut the symptoms that characterize the main cause of increased vehicle pollution. Vehicles emit emission chemicals such as carbon monoxide nitrogen dioxide nitrogen monoxide sulfur dioxide and suspended particulate matter. Other constituents of vehicle exhaustion include benzene toluene xylene aldehyde etc. which have systemic toxicity in humans.
Motor vehicles are the major pollutants that can harm the environment and cause public health problems. Everyone has an effort to limit emissions from motor vehicles. Carbon monoxide nitrogen oxides and hydrocarbons are released when the fuel is burned in an internal combustion engine and when air fuel residues are transmitted through the vehicle exhaust pipe.
The need to control emissions from cars increased the computerization of the car. Hydrocarbons carbon monoxide and nitrogen oxides are formed during the combustion process and released into the atmosphere from the tail pipe. There are also hydrocarbons that are excreted as a result of gasoline evaporation and from the cars crankcase.
A relatively new source of air pollution and car emissions caused different problems than manufacturing emissions such as coal smoke. Before the industrial revolution the levels of toxic chemicals in the air were relatively low but increased due to fossil fuel production and dramatically reduced air quality.
Pollutants emitted directly from vehicles are not the only cause of concern. On hot and sunny days hydrocarbons react with nitrogen oxides to create a secondary pollutant ozone. Ozone causes cough wheezing and shortness of breath and can cause permanent lung damage which causes critical health problems.
Once computer systems have evolved they could set the ignition ignition time and use the other emission controls installed on the vehicle. The computer could also monitor and diagnose itself. If an error is detected the computer will warn the vehicle operator by turning on a function indicator light. The computer will simultaneously detect the error in its memory so that a technician can later retrieve the error in the form of a code that helps them determine the correct repair.
The main purpose of the EGR valve for exhaust gas purification is to indicate a small amount of exhaust gas in the intake system which dilutes the air fuel mixture to reduce the combustion chamber temperature. Excessive combustion chamber temperature creates nitrogen oxides which is a major pollutant. EGR valve is the most effective method for controlling nitrogen oxides.
The catalytic converter looks like a silencer. It is in the exhaust system in front of the silencer. Vehicle emissions are mainly controlled in three ways one to promote complete combustion so that there are fewer products. The other is to reintroduce excessive hydrocarbons back into the combustion engine and the third is to provide a further area for oxidation or combustion to occur. This extra area is called a catalyst.
Combustion requires fuel oxygen and heat. Without any of the three combustion can not occur. This combustion gives no power but it will reduce excessive hydrocarbon emissions. There are times under normal conditions such as retardation when the fuel content is excessive. Under these conditions we would like to turn off the air injection system. The only maintenance required is a thorough inspection of the air pump drive belt.
The purpose of the positive crankcase PCV system is to take the vapors produced in the crankcase during the normal combustion process and redirect them to the air fuel intake system to be burned upon combustion. These vents sputter out the air fuel mixture so that they must be carefully checked and measured to not affect engine performance.
A container is used to catch fuel vapors. The fuel ponds stick to the coal until the engine is running and the engine vacuum can be used to pull the steam in the engine so that they can be burned together with the fuel air mixture. This system requires the use of a sealed cap for the gas tank. This cover is so important to the system that a test on the cover is now integrated into many government emissions emissions programs.
Proper maintenance of the car and truck emissions control system not only limits harmful emissions but also improves fuel efficiency and vehicle performance that prolongs the life of the vehicle. Care in storing and handling petrol and other solvents also reduces evaporation losses in the atmosphere.