Environmental Engineering Reference
In-Depth Information
Fig. 4
Vehicle sample speed collection route data
0.04
Diesel
B50
B100
GNC
0.04
0.03
0.03
0.02
0.02
0.01
0.01
0.00
Household Collection ransfer to Dupm
Dump
Approach
Fig. 5
CO emissions results
Results
The comparative study is carried out with regard to CO, HC, NO
x
, PM and CO
2
emissions and fuel consumption for each segment of the driving cycle, in respect of
two types of engine with three different fuels
[7]
. Figures
5
-
10
show the comparative
results obtained in a real-world driving cycle emissions measurement.
The results for CO are given in Fig.
5
. CO emissions have decreased with
increasing amount of methyl ester in the blend. The most notable decrease was
demonstrated during the Dump process. The CNG vehicle has higher CO emissions
than the diesels.
Figure
6
presents tailpipe THC emissions. THC emissions have decreased with
increasing amount of methyl ester in the blend. The differences among the selected
segments are not relevant. The CNG vehicle had the same or even lower HC emissions
than diesels except Transfer to Dump.
