Abstract
Legislation on emissions, reducing CO2 emissions and fuel consumption, as well as customer requests will result in the production of engines and propulsion systems from increasingly complex. In addition, producers should launch on the market several models and different versions to keep customer preferences. The legislation was based until now on testing procedures well known, includes standards for data actually achieved by using test cycles random and / or testing under real displacement, environmental and road conditions. Because the new test cycle WLTC involves more severe transient, at least as a percentage, it requires a more rigorous approach to engine calibration methods in parallel with a new development strategy power plants. The paper analyses the implications through computerized simulation test cycle WLTC future compared to the present NEDC for a middle class car. The results provide important insights about fuel consumption, CO2 that will respond favourably to the new development strategy power plants.
Keywords: European regulations, fuel consumptions, atmospheric pollutants, NEDC, WLTC.