The work presents one of the most serious problems related to air pollution as it can have effects both in the short term, but especially in the medium and long term. By increasing the number of automobiles put into circulation every year, in addition to the increase in fuel consumption, the problem of pollution has been accentuated, due to the noxious emissions of the internal combustion engines used for their propulsion. The requirement to reduce fuel consumption has become even more acute as it is closely related to environmental pollution.

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