Carbon dioxide emission from car

There is concern about the levels of carbon dioxide emissions from cars, as well as the three main pollutants from combustion HC, CO, and NO. Lower CO2 emissions result from improved fuel economy that can be obtained in several ways. An important, more fuel efficient approach is through the use of so-called lean-bum engines that operate with excess air rather than with stoichiometric air-fuel mixtures. 

Carbon Dioxide Emissions from Cars How Many Trees Will Compensate the Output of One Vehicle ... 

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