Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
6692361 | Applied Energy | 2013 | 11 Pages |
Abstract
The test results showed that carbon monoxide (CO) and total hydrocarbon (HC) emissions of gasoline vehicles increased from 2.3 to 11.3 times at â7 °C over the Urban Driving Cycle (UDC), remaining however below the current legislative limits by 45% and 65% respectively. Nitrogen oxides (NOx) emissions of gasoline vehicles at â7 °C turned out to be either higher or lower than at 22 °C, depending on the catalyst's performance and engine injection strategy. Diesel vehicles without any NOx after-treatment system exhibited increased NOx emissions over both the UDC and Extra Urban Driving Cycle (EUDC) when tested at â7 °C. The diesel car with the SCR system showed superior NOx performance only over the second half of the NEDC.
Keywords
DPFExtra Urban driving cycleEUDCUDCConstant volume samplingTWCEGRCVSECUPFINEDCDOCPassenger carsEmission standardGaseous emissionsport fuel injectiongasoline direct injectionCold-startDiesel particulate filterEmission limitsEngine control unitUrban Driving Cyclenew European driving cyclediesel oxidation catalystThree way catalystSelective catalytic reductionVelAexhaust gas recirculationEuroSCR
Related Topics
Physical Sciences and Engineering
Energy
Energy Engineering and Power Technology
Authors
Christos Dardiotis, Giorgio Martini, Alessandro Marotta, Urbano Manfredi,