Abstract
The problem of global warming and the related climate change requires solutions to reduce greenhouse gas emissions, in particular CO2. As a result, newly manufactured cars consume less fuel and emit lower amounts of CO2. In terms of exhaust emissions and fuel consumption, old cars are significantly inferior to the more recent models. In Poland, for instance, the average age of passenger cars is approximately 13 years. Therefore, apart from developing new solutions in the cars produced today, it is important to focus on measures that enable the reduction in CO2 emissions in older vehicles. These methods include the adaptation of used cars to run on gaseous fuels. Natural gas is a hydrocarbon fuel that is particularly preferred in terms of CO2 emissions. The article presents the results of research of carbon oxides emission (CO, CO2) in the exhaust gas of a passenger car fueled by petrol and natural gas. The emissions were measured under the conditions of the New European Driving Cycle (NEDC) test and in real road tests. The test results confirm that compared to petrol, a CNG vehicle allows for a significant reduction in CO2 and CO emissions in a car that is several years old, especially in urban traffic conditions.
Highlights
It can be concluded that the average for the test car fueled with natural gas was lower by approximately 23%
Fueled with5petrol natural gasof are presented in Table
2 emission for the test car fueled with natural gas was lower by approximately are evident
Summary
Transport generates 25% of total greenhouse gas emissions and is estimated to be the second largest source of the same after the energy sector [1,2,3,4,5,6,7,8]. In terms of these emissions, as much as 95% of CO2 is generated by road transport, of which 61% is emissions from passenger vehicles [9,10,11,12]. This is due to the chemical impact of CO on CH4 , CO2 and O3 [13]
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