Automotive engineering has become so advanced that now the cars have become computerized with improved performance and lowered emissions. With the computerization of cars, many new technologies have been introduced which has dramatically reduced air pollution that is largely contributed by cars and other vehicles plying on roads.
Hydrocarbons, carbon monoxide, and oxides of nitrogen are emitted to the environment during the combustion process. The four main sources of these poisonous gases are engine exhaust, crankcase, fuel tanks, and carburetor. The exhaust pipe and the crankcase discharges burnt and unburnt gases like hydrocarbons, carbon monoxide, oxides of nitrogen, and sulphur that are harmful to both the environment as well as human health. In the fuel tank and carburetor the toxic hydrocarbons are continually evaporated from gasoline during the combustion process.
At the time when automobiles were introduced there was nil pollution contributed by them but as the numbers started increasing the rate of
automotive pollution also started soaring. Today there are huge numbers of automobiles plying on roads that are enough to create a complete imbalance in the global environment. Fortunately, manufacturers have realized the consequences of the increasing automobile pollution and have introduced advanced pollution control devices that prove to be a perfect answer to emission control.
However, many car manufacturers like Hyundai, Honda, and Maruti Suzuki have come up with innovative engines that are both fuel-efficient and nature-friendly. Some of the key examples of the same are kappa engine by
Hyundai, k-series engine by Maruti Suzuki, and i-VTEC engine by Honda.
Catalytic convertor is a small device fitted in the exhaust system that helps to convert harmful gases released from the combustion engine into water vapour and carbon dioxide through a heat-producing chemical reaction. The device comprises a honeycomb made of platinum or palladium. Platinum or palladium serves the purpose of a catalyst that speeds up the chemical reaction. During the combustion process when harmful gases are passed over this catalyst the gases get chemically oxidized and gets converted to a non-poisonous form of gas comprising carbon dioxide and water vapour. While the convertor is doing its job, it generates heat and cleans the exhaust. The convertor requires more hard work if the exhaust is dirty and in the process more heat is generated that can prove to be fatal. So, it is very essential that the exhaust should be well cleaned. This feature installed in the emission control system is a good way to reduce harmful automotive emissions.