Consideration on the Implications of the WLTC - (Worldwide Harmonized Light-Duty Test Cycle) for a Middle Class Car

Abstract

Legislation on emissions, reducing CO2 emissions and fuel con-sumption, 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 cus-tomer 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 condi-tions. Because the new test cycle WLTC involves more severe transient, at least as a percentage, it requires a more rigorous approach to engine calibration me-thods in parallel with a new development strategy powerplants. The paper analyzes 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 favorably to the new development strategy powerplants.